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Publisher: Springer-Verlag   (Total: 2335 journals)

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Showing 1201 - 1400 of 2335 Journals sorted alphabetically
J. of Community Health     Hybrid Journal   (Followers: 8, SJR: 0.921, h-index: 44)
J. of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology     Hybrid Journal   (Followers: 7, SJR: 1.087, h-index: 74)
J. of Comparative Physiology B : Biochemical, Systemic, and Environmental Physiology     Hybrid Journal   (Followers: 4, SJR: 1.126, h-index: 59)
J. of Compassionate Health Care     Open Access   (Followers: 2)
J. of Computational Analysis and Applications     Hybrid Journal   (SJR: 0.291, h-index: 19)
J. of Computational Electronics     Hybrid Journal   (Followers: 4, SJR: 0.511, h-index: 20)
J. of Computational Neuroscience     Hybrid Journal   (Followers: 24, SJR: 1.068, h-index: 60)
J. of Computer and Systems Sciences Intl.     Hybrid Journal   (SJR: 0.27, h-index: 13)
J. of Computer Science and Technology     Open Access   (Followers: 5, SJR: 0.437, h-index: 31)
J. of Computer Virology and Hacking Techniques     Hybrid Journal   (Followers: 6, SJR: 0.151, h-index: 2)
J. of Computer-Aided Molecular Design     Hybrid Journal   (Followers: 3, SJR: 0.995, h-index: 78)
J. of Computers in Education     Hybrid Journal   (Followers: 8)
J. of Computing in Higher Education     Hybrid Journal   (Followers: 13, SJR: 0.363, h-index: 21)
J. of Consumer Policy     Hybrid Journal   (Followers: 7, SJR: 0.704, h-index: 30)
J. of Contemporary Mathematical Analysis     Hybrid Journal   (SJR: 0.237, h-index: 5)
J. of Contemporary Physics (Armenian Academy of Sciences)     Hybrid Journal   (Followers: 11, SJR: 0.197, h-index: 6)
J. of Contemporary Psychotherapy     Hybrid Journal   (Followers: 5, SJR: 0.397, h-index: 23)
J. of Control Theory and Applications     Hybrid Journal   (Followers: 2, SJR: 0.359, h-index: 19)
J. of Control, Automation and Electrical Systems     Hybrid Journal   (Followers: 9, SJR: 0.231, h-index: 9)
J. of Crop Science and Biotechnology     Hybrid Journal   (Followers: 7)
J. of Cross-Cultural Gerontology     Hybrid Journal   (Followers: 5, SJR: 0.631, h-index: 29)
J. of Cryptographic Engineering     Partially Free   (Followers: 5, SJR: 0.989, h-index: 11)
J. of Cryptology     Hybrid Journal   (Followers: 2, SJR: 1.443, h-index: 55)
J. of Cultural Economics     Hybrid Journal   (Followers: 4, SJR: 0.539, h-index: 29)
J. of Database Marketing & Customer Strategy Management     Hybrid Journal   (Followers: 8, SJR: 0.149, h-index: 8)
J. of Derivatives & Hedge Funds     Hybrid Journal   (Followers: 9, SJR: 0.114, h-index: 5)
J. of Developmental and Physical Disabilities     Hybrid Journal   (Followers: 8, SJR: 0.574, h-index: 29)
J. of Digital Imaging     Hybrid Journal   (Followers: 10, SJR: 0.578, h-index: 35)
J. of Direct Data and Digital Marketing Practice     Hybrid Journal   (Followers: 8, SJR: 0.154, h-index: 6)
J. of Dynamical and Control Systems     Hybrid Journal   (Followers: 2, SJR: 0.4, h-index: 26)
J. of Dynamics and Differential Equations     Hybrid Journal   (SJR: 1.418, h-index: 31)
J. of Earth Science     Hybrid Journal   (Followers: 8, SJR: 0.483, h-index: 16)
J. of Earth System Science     Open Access   (Followers: 43, SJR: 0.448, h-index: 32)
J. of East Asian Linguistics     Hybrid Journal   (Followers: 5, SJR: 0.537, h-index: 20)
J. of Echocardiography     Hybrid Journal   (Followers: 4, SJR: 0.22, h-index: 3)
J. of Economic Growth     Hybrid Journal   (Followers: 27, SJR: 3.273, h-index: 63)
J. of Economic Interaction and Coordination     Hybrid Journal   (SJR: 0.263, h-index: 12)
J. of Economics     Hybrid Journal   (Followers: 17, SJR: 0.418, h-index: 23)
J. of Economics and Finance     Hybrid Journal   (Followers: 6, SJR: 0.272, h-index: 19)
J. of Educational Change     Hybrid Journal   (Followers: 7, SJR: 0.961, h-index: 21)
J. of Elasticity     Hybrid Journal   (Followers: 6, SJR: 0.851, h-index: 45)
J. of Electroceramics     Hybrid Journal   (SJR: 0.577, h-index: 57)
J. of Electronic Materials     Hybrid Journal   (Followers: 4, SJR: 0.609, h-index: 75)
J. of Electronic Testing     Hybrid Journal   (Followers: 2, SJR: 0.372, h-index: 27)
J. of Electronics (China)     Hybrid Journal   (Followers: 4, SJR: 0.112, h-index: 9)
J. of Elementary Science Education     Hybrid Journal   (Followers: 9)
J. of Engineering Mathematics     Hybrid Journal   (SJR: 0.347, h-index: 37)
J. of Engineering Physics and Thermophysics     Hybrid Journal   (Followers: 1, SJR: 0.288, h-index: 11)
J. of Engineering Research     Open Access   (Followers: 1, SJR: 0.145, h-index: 5)
J. of Engineering Thermophysics     Hybrid Journal   (Followers: 2, SJR: 0.763, h-index: 9)
J. of Environmental Studies and Sciences     Partially Free   (Followers: 2)
J. of Ethology     Hybrid Journal   (Followers: 2, SJR: 0.609, h-index: 25)
J. of Evolution Equations     Hybrid Journal   (SJR: 0.826, h-index: 26)
J. of Evolutionary Biochemistry and Physiology     Hybrid Journal   (SJR: 0.145, h-index: 11)
J. of Evolutionary Economics     Hybrid Journal   (Followers: 8, SJR: 0.492, h-index: 52)
J. of Experimental and Theoretical Physics     Hybrid Journal   (Followers: 3, SJR: 0.458, h-index: 39)
J. of Experimental Criminology     Hybrid Journal   (Followers: 44, SJR: 1.445, h-index: 28)
J. of Failure Analysis and Prevention     Hybrid Journal   (Followers: 5, SJR: 0.261, h-index: 15)
J. of Family and Economic Issues     Hybrid Journal   (Followers: 6, SJR: 0.396, h-index: 32)
J. of Family Violence     Hybrid Journal   (Followers: 36, SJR: 0.639, h-index: 56)
J. of Financial Services Marketing     Hybrid Journal   (Followers: 3, SJR: 0.273, h-index: 10)
J. of Financial Services Research     Hybrid Journal   (Followers: 22, SJR: 0.572, h-index: 36)
J. of Fixed Point Theory and Applications     Hybrid Journal   (SJR: 0.644, h-index: 13)
J. of Fluorescence     Hybrid Journal   (Followers: 3, SJR: 0.465, h-index: 56)
J. of Food Measurement and Characterization     Hybrid Journal   (SJR: 0.307, h-index: 4)
J. of Food Science and Technology     Hybrid Journal   (Followers: 6, SJR: 0.441, h-index: 29)
J. of Forest Research     Hybrid Journal   (Followers: 3, SJR: 0.495, h-index: 27)
J. of Forestry Research     Hybrid Journal   (Followers: 6, SJR: 0.304, h-index: 14)
J. of Fourier Analysis and Applications     Hybrid Journal   (Followers: 1, SJR: 1.18, h-index: 42)
J. of Friction and Wear     Hybrid Journal   (Followers: 7, SJR: 0.373, h-index: 7)
J. of Fusion Energy     Hybrid Journal   (Followers: 3, SJR: 0.387, h-index: 19)
J. of Gambling Studies     Hybrid Journal   (Followers: 6, SJR: 1.171, h-index: 57)
J. of Gastroenterology     Hybrid Journal   (Followers: 12, SJR: 1.651, h-index: 88)
J. of Gastrointestinal Cancer     Hybrid Journal   (Followers: 3, SJR: 0.304, h-index: 39)
J. of Gastrointestinal Surgery     Hybrid Journal   (Followers: 6, SJR: 1.64, h-index: 99)
J. of General Internal Medicine     Hybrid Journal   (Followers: 16, SJR: 1.804, h-index: 134)
J. of General Plant Pathology     Hybrid Journal   (SJR: 0.554, h-index: 22)
J. of Genetic Counseling     Hybrid Journal   (Followers: 5, SJR: 0.902, h-index: 39)
J. of Genetics     Open Access   (Followers: 4, SJR: 0.458, h-index: 28)
J. of Geodesy     Hybrid Journal   (Followers: 8, SJR: 2.173, h-index: 56)
J. of Geographical Sciences     Hybrid Journal   (Followers: 1, SJR: 0.8, h-index: 23)
J. of Geographical Systems     Hybrid Journal   (Followers: 4, SJR: 0.822, h-index: 39)
J. of Geometric Analysis     Hybrid Journal   (SJR: 1.491, h-index: 27)
J. of Geometry     Hybrid Journal   (Followers: 1, SJR: 0.272, h-index: 15)
J. of Global Optimization     Hybrid Journal   (Followers: 4, SJR: 0.992, h-index: 60)
J. of Global Policy and Governance     Hybrid Journal   (Followers: 9)
J. of Grid Computing     Hybrid Journal   (Followers: 1, SJR: 1.414, h-index: 37)
J. of Hand and Microsurgery     Hybrid Journal   (Followers: 1)
J. of Happiness Studies     Hybrid Journal   (Followers: 23, SJR: 0.881, h-index: 39)
J. of Hematopathology     Hybrid Journal   (Followers: 4, SJR: 0.2, h-index: 13)
J. of Heuristics     Hybrid Journal   (Followers: 5, SJR: 1.308, h-index: 50)
J. of High Energy Physics     Hybrid Journal   (Followers: 19, SJR: 1.052, h-index: 153)
J. of Homotopy and Related Structures     Hybrid Journal   (SJR: 0.232, h-index: 2)
J. of Housing and the Built Environment     Hybrid Journal   (Followers: 7, SJR: 0.648, h-index: 28)
J. of Huazhong University of Science and Technology [Medical Sciences]     Hybrid Journal   (SJR: 0.344, h-index: 19)
J. of Ichthyology     Hybrid Journal   (Followers: 3, SJR: 0.304, h-index: 10)
J. of Immigrant and Minority Health     Hybrid Journal   (Followers: 11, SJR: 0.759, h-index: 37)
J. of Inclusion Phenomena and Macrocyclic Chemistry     Hybrid Journal   (Followers: 1, SJR: 0.331, h-index: 46)
J. of Indian Philosophy     Hybrid Journal   (Followers: 12, SJR: 0.127, h-index: 12)
J. of Indian Prosthodontic Society     Open Access   (Followers: 1, SJR: 0.164, h-index: 7)
J. of Industrial Microbiology and Biotechnology     Hybrid Journal   (Followers: 15, SJR: 0.966, h-index: 80)
J. of Industry, Competition and Trade     Hybrid Journal   (Followers: 8, SJR: 0.327, h-index: 15)
J. of Infection and Chemotherapy     Hybrid Journal   (Followers: 1, SJR: 0.673, h-index: 46)
J. of Information Technology     Hybrid Journal   (Followers: 54, SJR: 1.474, h-index: 55)
J. of Information Technology Teaching Cases     Hybrid Journal   (Followers: 8)
J. of Infrared, Millimeter and Terahertz Waves     Hybrid Journal   (Followers: 2, SJR: 1.25, h-index: 36)
J. of Inherited Metabolic Disease     Hybrid Journal   (Followers: 2, SJR: 1.389, h-index: 77)
J. of Inorganic and Organometallic Polymers and Materials     Partially Free   (Followers: 9, SJR: 0.338, h-index: 33)
J. of Insect Behavior     Hybrid Journal   (Followers: 9, SJR: 0.569, h-index: 39)
J. of Insect Conservation     Hybrid Journal   (Followers: 10, SJR: 0.872, h-index: 43)
J. of Intelligent and Robotic Systems     Hybrid Journal   (Followers: 2, SJR: 0.629, h-index: 43)
J. of Intelligent Information Systems     Hybrid Journal   (Followers: 1, SJR: 0.691, h-index: 43)
J. of Intelligent Manufacturing     Hybrid Journal   (Followers: 3, SJR: 1.397, h-index: 54)
J. of Interventional Cardiac Electrophysiology     Hybrid Journal   (SJR: 0.93, h-index: 43)
J. of Intl. Business Studies     Hybrid Journal   (Followers: 30, SJR: 4.208, h-index: 130)
J. of Intl. Entrepreneurship     Hybrid Journal   (Followers: 9, SJR: 0.549, h-index: 23)
J. of Intl. Migration and Integration / Revue de l integration et de la migration internationale     Hybrid Journal   (Followers: 13, SJR: 0.308, h-index: 13)
J. of Intl. Relations and Development     Hybrid Journal   (Followers: 20, SJR: 0.793, h-index: 22)
J. of Labor Research     Hybrid Journal   (Followers: 17, SJR: 0.394, h-index: 27)
J. of Logic, Language and Information     Hybrid Journal   (Followers: 7, SJR: 0.288, h-index: 25)
J. of Low Temperature Physics     Hybrid Journal   (Followers: 3, SJR: 0.531, h-index: 52)
J. of Machinery Manufacture and Reliability     Hybrid Journal   (Followers: 2, SJR: 0.203, h-index: 7)
J. of Mammalian Evolution     Hybrid Journal   (Followers: 5, SJR: 1.134, h-index: 37)
J. of Mammary Gland Biology and Neoplasia     Hybrid Journal   (Followers: 2, SJR: 2.252, h-index: 83)
J. of Management and Governance     Hybrid Journal   (Followers: 13, SJR: 0.805, h-index: 33)
J. of Management Control     Hybrid Journal   (Followers: 4, SJR: 0.605, h-index: 6)
J. of Marine Science and Application     Hybrid Journal   (Followers: 3, SJR: 0.439, h-index: 11)
J. of Marine Science and Technology     Hybrid Journal   (Followers: 3, SJR: 0.235, h-index: 19)
J. of Maritime Archaeology     Hybrid Journal   (Followers: 21, SJR: 0.228, h-index: 8)
J. of Market-Focused Management     Hybrid Journal   (Followers: 2)
J. of Marketing Analytics     Hybrid Journal   (Followers: 4)
J. of Material Cycles and Waste Management     Hybrid Journal   (Followers: 3, SJR: 0.449, h-index: 22)
J. of Materials Engineering and Performance     Hybrid Journal   (Followers: 22, SJR: 0.544, h-index: 40)
J. of Materials Science     Hybrid Journal   (Followers: 20, SJR: 0.836, h-index: 123)
J. of Materials Science : Materials in Electronics     Hybrid Journal   (Followers: 5)
J. of Materials Science : Materials in Medicine     Hybrid Journal   (Followers: 5)
J. of Mathematical Biology     Hybrid Journal   (Followers: 12, SJR: 1.011, h-index: 71)
J. of Mathematical Chemistry     Hybrid Journal   (Followers: 5, SJR: 0.497, h-index: 45)
J. of Mathematical Fluid Mechanics     Hybrid Journal   (Followers: 6, SJR: 1.22, h-index: 22)
J. of Mathematical Imaging and Vision     Hybrid Journal   (Followers: 4, SJR: 0.901, h-index: 53)
J. of Mathematical Modelling and Algorithms     Hybrid Journal   (Followers: 2, SJR: 0.414, h-index: 23)
J. of Mathematical Sciences     Hybrid Journal   (SJR: 0.272, h-index: 23)
J. of Mathematics Teacher Education     Hybrid Journal   (Followers: 14, SJR: 1.062, h-index: 20)
J. of Maxillofacial and Oral Surgery     Hybrid Journal   (Followers: 2)
J. of Mechanical Science and Technology     Hybrid Journal   (Followers: 6, SJR: 0.589, h-index: 26)
J. of Medical and Biological Engineering     Hybrid Journal   (Followers: 1, SJR: 0.387, h-index: 18)
J. of Medical Humanities     Hybrid Journal   (Followers: 22, SJR: 0.299, h-index: 18)
J. of Medical Systems     Hybrid Journal   (Followers: 1, SJR: 0.717, h-index: 44)
J. of Medical Toxicology     Hybrid Journal   (Followers: 4, SJR: 0.874, h-index: 28)
J. of Medical Ultrasonics     Hybrid Journal   (Followers: 2, SJR: 0.18, h-index: 13)
J. of Medicine and the Person     Hybrid Journal  
J. of Membrane Biology     Hybrid Journal   (Followers: 2, SJR: 0.738, h-index: 82)
J. of Micro-Bio Robotics     Hybrid Journal   (SJR: 0.28, h-index: 3)
J. of Microbiology     Hybrid Journal   (Followers: 8, SJR: 0.741, h-index: 43)
J. of Mining Science     Hybrid Journal   (Followers: 5, SJR: 0.317, h-index: 16)
J. of Molecular Evolution     Hybrid Journal   (Followers: 9, SJR: 0.952, h-index: 108)
J. of Molecular Histology     Hybrid Journal   (Followers: 2, SJR: 0.755, h-index: 48)
J. of Molecular Medicine     Hybrid Journal   (Followers: 15, SJR: 2.165, h-index: 113)
J. of Molecular Modeling     Hybrid Journal   (Followers: 4, SJR: 0.466, h-index: 50)
J. of Molecular Neuroscience     Partially Free   (Followers: 11, SJR: 0.988, h-index: 69)
J. of Mountain Science     Hybrid Journal   (Followers: 4, SJR: 0.418, h-index: 15)
J. of Muscle Research and Cell Motility     Hybrid Journal   (Followers: 1, SJR: 1.264, h-index: 55)
J. of Nanoparticle Research     Hybrid Journal   (Followers: 3, SJR: 0.583, h-index: 84)
J. of Natural Medicines     Hybrid Journal   (SJR: 0.602, h-index: 28)
J. of Near-Death Studies     Hybrid Journal   (Followers: 2)
J. of Nephrology     Hybrid Journal   (Followers: 5, SJR: 0.689, h-index: 55)
J. of Network and Systems Management     Hybrid Journal   (SJR: 0.466, h-index: 26)
J. of Neural Transmission     Hybrid Journal   (Followers: 2, SJR: 1.034, h-index: 86)
J. of Neuro-Oncology     Hybrid Journal   (Followers: 3, SJR: 1.274, h-index: 90)
J. of Neuroimmune Pharmacology     Hybrid Journal   (Followers: 1, SJR: 1.662, h-index: 45)
J. of Neurology     Hybrid Journal   (Followers: 15, SJR: 1.429, h-index: 105)
J. of NeuroVirology     Hybrid Journal   (Followers: 1, SJR: 0.979, h-index: 69)
J. of Nondestructive Evaluation     Hybrid Journal   (Followers: 9, SJR: 0.863, h-index: 27)
J. of Nonlinear Science     Hybrid Journal   (Followers: 1, SJR: 1.887, h-index: 42)
J. of Nonverbal Behavior     Hybrid Journal   (Followers: 5, SJR: 0.723, h-index: 47)
J. of Nuclear Cardiology     Hybrid Journal   (SJR: 1.024, h-index: 68)
J. of Nutrition, Health and Aging     Hybrid Journal   (Followers: 20, SJR: 0.919, h-index: 60)
J. of Obstetrics and Gynecology of India     Hybrid Journal   (Followers: 6, SJR: 0.214, h-index: 6)
J. of Occupational Rehabilitation     Hybrid Journal   (Followers: 15, SJR: 0.811, h-index: 51)
J. of Ocean Engineering and Marine Energy     Hybrid Journal   (Followers: 1)
J. of Ocean University of China (English Edition)     Hybrid Journal   (Followers: 1, SJR: 0.237, h-index: 11)
J. of Oceanography     Hybrid Journal   (Followers: 10, SJR: 0.796, h-index: 52)
J. of Ocular Biology, Diseases, and Informatics     Hybrid Journal   (SJR: 0.183, h-index: 11)
J. of Optical and Fiber Communications Reports     Hybrid Journal   (Followers: 3)
J. of Optics     Hybrid Journal   (Followers: 8, SJR: 0.214, h-index: 8)
J. of Optimization Theory and Applications     Hybrid Journal   (Followers: 4, SJR: 0.898, h-index: 65)
J. of Ornithology     Hybrid Journal   (Followers: 22)
J. of Orofacial Orthopedics / Fortschritte der Kieferorthopädie     Hybrid Journal   (SJR: 0.574, h-index: 33)
J. of Orthopaedic Science     Hybrid Journal   (Followers: 6, SJR: 0.708, h-index: 48)
J. of Paleolimnology     Hybrid Journal   (Followers: 5, SJR: 0.984, h-index: 64)
J. of Parasitic Diseases     Hybrid Journal   (Followers: 2, SJR: 0.298, h-index: 9)
J. of Pediatric Neuropsychology     Hybrid Journal   (Followers: 3)
J. of Pest Science     Hybrid Journal   (Followers: 2, SJR: 1.341, h-index: 28)
J. of Pharmaceutical Health Care and Sciences     Open Access  
J. of Pharmaceutical Innovation     Hybrid Journal   (Followers: 8, SJR: 0.524, h-index: 17)
J. of Pharmaceutical Investigation     Hybrid Journal   (Followers: 1, SJR: 0.331, h-index: 6)
J. of Pharmacokinetics and Pharmacodynamics     Hybrid Journal   (Followers: 18, SJR: 0.708, h-index: 46)
J. of Phase Equilibria and Diffusion     Hybrid Journal   (Followers: 18, SJR: 0.433, h-index: 36)
J. of Philosophical Logic     Hybrid Journal   (Followers: 8, SJR: 0.704, h-index: 26)
J. of Physiology and Biochemistry     Hybrid Journal   (Followers: 3, SJR: 0.87, h-index: 33)

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Journal Cover European Food Research and Technology
  [SJR: 0.726]   [H-I: 70]   [7 followers]  Follow
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1438-2377 - ISSN (Online) 1438-2385
   Published by Springer-Verlag Homepage  [2335 journals]
  • Maturation and picking time for sweet cherries ( Prunus avium ) and sour
           cherries ( Prunus cerasus L.)
    • Authors: K. Kaack
      Pages: 539 - 546
      Abstract: Abstract Twelve sweet and sour cherry cultivars were grown at the location 10°27′ (E) and 55°18′ (N) for the purpose of describing the morphological, physical and chemical properties of samples picked from their first day of maturity and 1, 4, 7, 11 and 18 days later. Acidity, soluble solids, redness (a) and lightness (L) increased significantly and linearly with the picking time, whereas yellowness decreased significantly and linearly with the picking time. Berry weight and the level of anthocyanin increased significantly according to positive multiplicative equations, while stone percentage and cyanide content decreased according to negative multiplicative equations during the picking period. Factor analysis revealed a linear and positive relationship between factor scores and maturity days, which may be used for determination of fruit development and picking time. In addition, the factor analysis made it possible to divide the quality characteristics of cherries into five groups or factors: factor one being the number of days and yellowness, factor two being berry weight and stone percentage, factor three being the level of benzaldehyde and number of maturity days, factor four being the level of anthocyanin and content of soluble solids and factor five being the acidity and anthocyanin levels.
      PubDate: 2017-04-01
      DOI: 10.1007/s00217-016-2753-6
      Issue No: Vol. 243, No. 4 (2017)
  • Glucoraphenin, sulforaphene, and antiproliferative capacity of radish
           sprouts in germinating and thermal processes
    • Authors: Ruimin Li; Dan Song; Frank Vriesekoop; Li Cheng; Qipeng Yuan; Hao Liang
      Pages: 547 - 554
      Abstract: Abstract Glucoraphenin, the predominant glucosinolate in radish sprouts, is hydrolyzed by myrosinase to sulforaphene that is implicated to exert anticancerogenic effects. The effects of germination and subsequent cooking processes on the levels of glucoraphenin and its hydrolysis products were investigated in this research. HPLC analysis revealed that the levels of glucoraphenin and sulforaphene decreased with germination time. In agreement with the above results, the antiproliferation activity of radish sprouts extracts on human lung cancer cells was also found to decline gradually in line with the germination process. Furthermore, when we applied three traditional cooking treatments to radish sprouts, the glucoraphenin and sulforaphene were markedly decreased; while the antiproliferation activity of cooked radish sprouts was considerably decreased. This research showed that 3-day-old radish sprouts are an excellent source of bioactive compounds that could potentially benefit human health, while any cooking process appears to cause the devastation of beneficial attributes in radish sprouts.
      PubDate: 2017-04-01
      DOI: 10.1007/s00217-016-2764-3
      Issue No: Vol. 243, No. 4 (2017)
  • Development and evaluation of a dual priming oligonucleotide system-based
    • Authors: Yi-Gang Xu; Bo Sun; Hai-Yuan Zhao; Zhong-Mei Liu; Yan-Ping Jiang; Li Wang; Xin-Yuan Qiao; Yi-Jing Li; Li-Jie Tang
      Pages: 555 - 563
      Abstract: Abstract In this study, a multiplex PCR assay with dual priming oligonucleotide system (DPO system-based mPCR) was developed for the simultaneous detection of Salmonella spp., Listeria (L.) monocytogenes, Shigella spp., Staphylococcus (S.) aureus, Campylobacter (C.) jejuni and Yersinia (Y.) enterocolitica from food. Pathogen-specific DPO systems were designed targeting Salmonella spp. fimY gene, L. monocytogenes iap gene, Shigella spp. ipaH gene, S. aureus 442 gene, C. jejuni gyrA gene and Y. enterocolitica 16 s–23 s rRNA gene, respectively. Our optimized DPO system-based mPCR assay allowed a wide range of annealing temperature from 48 to 68 °C to efficiently amplify multi-genes followed by a nearly identical pattern with an analytical detection limit of 102–103 CFU/mL (g) for the simultaneous detection of the six target bacteria in pure cultures or artificially contaminated food matrixes. Applying the DPO system-based mPCR assay to 238 target and 83 nontarget bacterial strains revealed that only target bacterial strains were positive in this assay, indicating a high specificity. Moreover, the DPO system-based mPCR assay showed a potential diagnostic capability evaluated by testing 2419 samples collected from food, clinical and environmental sources. The DPO system-based mPCR assay may provide a useful tool for the detection of these six foodborne pathogens in laboratory diagnosis.
      PubDate: 2017-04-01
      DOI: 10.1007/s00217-016-2765-2
      Issue No: Vol. 243, No. 4 (2017)
  • Implementation of kinetics and response surface methodology reveals
           contrasting effects of catechin and chlorogenic acid on the development of
           browning in wine model systems containing either ascorbic acid or sulphite
    • Authors: Dusan Tomic; Spyros Grigorakis; Sofia Loupassaki; Dimitris P. Makris
      Pages: 565 - 574
      Abstract: Abstract Wine model systems, containing catechin (Ct) and chlorogenic acid (CGA) as major browning substrates, were used to examine the effect of browning development, upon addition of ascorbic acid (AA) or sulphite. Browning rate was found to obey zero-order kinetics, and the browning rate constant, k, was used as the response to assess the effect of various combinations of Ct/CGA/AA and Ct/CGA/sulphite on browning onset, by deploying factorial design and response surface methodology. The models found suggested that browning rate was higher in model solutions containing AA and lower in those containing sulphite, while the presence of CGA did not affect browning reactions. This fact was confirmed by liquid chromatography–diode array–mass spectrometry analyses, which demonstrated the formation of yellow pigments deriving from Ct.
      PubDate: 2017-04-01
      DOI: 10.1007/s00217-016-2766-1
      Issue No: Vol. 243, No. 4 (2017)
  • Improving the color and aging aptitude of Syrah wines in warm climate by
           wood–grape mix maceration
    • Authors: María Jesús Cejudo-Bastante; Francisco J. Rivero-Granados; Francisco J. Heredia
      Pages: 575 - 582
      Abstract: Abstract The amelioration of aging aptitude of Syrah red wines from warm climate regions by adding oak wood chips to the grape maceration/fermentation has been developed. Our attention was focused on the tristimulus colorimetry, differential colorimetry and phenolic composition. This technique was applied with an eye toward improving color stabilization of wines in a warm climate region where common loss of color normally occurs. On the basis of the results, a color enhancement (by an increment of chroma, C \(^{\ast}_{ab}\) ) and significantly (p < 0.05) higher amounts of total polyphenols, anthocyanins, flavan-3-ols and esters of hydroxycinnamic acids were observed in Syrah red wines, favoring a significantly (p < 0.05) higher percentage of copigmentation and, hence, color stabilization. Finally, it could be affirmed that the joint addition of oak wood chips (during both fermentation and aging) induced visually perceptible color differences (ΔE \(^{\ast}_{ab}\)  > 3), mainly quantitative (Δ2 L and Δ2 C), from the early months of storage.
      PubDate: 2017-04-01
      DOI: 10.1007/s00217-016-2767-0
      Issue No: Vol. 243, No. 4 (2017)
  • Synergistic effect of lecithins for tocopherols: formation and antioxidant
           effect of the phosphatidylethanolamine— l -ascorbic acid condensate
    • Authors: Martin Doert; Stephanie Krüger; Gertrud E. Morlock; Lothar W. Kroh
      Pages: 583 - 596
      Abstract: Abstract Ternary mixtures of lecithins, vitamin C and vitamin E are powerful antioxidants for the stabilization of polyunsaturated (n-3 fatty acid) oils. In this study, the chemistry of the antioxidant synergistic effect was investigated in ethyl linoleate (EL) containing α-tocopherol (α-Toc) or in linoleate rich vegetable oils at 110 °C using mixtures of phosphatidylethanolamine (PE) and either l-ascorbic acid (AA) or l-dehydroascorbic acid (DHA). The highest stabilization effects in EL were similar in both systems and were found in the molar mixtures of PE and AA or DHA. The thermal formation of reaction products between PE and AA (PE–AA) or DHA (PE–DHA) were investigated by HPTLC/ESI-MS. When α-tocopherylquinone (α-TQ) was used instead of α-Toc, nearly the same antioxidant effect was observed in the EL system. It was shown that molar mixtures of PE and AA, or PE and DHA, can regenerate α-TQ to α-Toc at elevated temperatures. PE–AA was synthesized and tested as antioxidants in EL containing α-Toc and in vegetable oils at room temperature. An improved stabilization was observed with the synthesized derivative compared to the physical mixture of the compounds, which demonstrated that PE–AA is a potential new antioxidant. A mechanism for the synergistic action between PE, AA and α-Toc through an acid-catalysed regeneration of α-TQ is suggested. PE–AA is an active apolar antioxidant, which is involved in the reduction of α-TQ.
      PubDate: 2017-04-01
      DOI: 10.1007/s00217-016-2768-z
      Issue No: Vol. 243, No. 4 (2017)
  • Evaluation of extra-virgin olive oils shelf life using an electronic
           tongue—chemometric approach
    • Authors: Nuno Rodrigues; Luís G. Dias; Ana C. A. Veloso; José A. Pereira; António M. Peres
      Pages: 597 - 607
      Abstract: Abstract Physicochemical quality parameters, olfactory and gustatory–retronasal positive sensations of extra-virgin olive oils vary during storage leading to a decrease in the overall quality. Olive oil quality decline may prevent the compliance of olive oil quality with labeling and significantly reduce shelf life, resulting in important economic losses and negatively condition the consumer confidence. The feasibility of applying an electronic tongue to assess olive oils’ usual commercial light storage conditions and storage time was evaluated and compared with the discrimination potential of physicochemical or positive olfactory/gustatory sensorial parameters. Linear discriminant models, based on subsets of 5–8 electronic tongue sensor signals, selected by the meta-heuristic simulated annealing variable selection algorithm, allowed the correct classification of olive oils according to the light exposition conditions and/or storage time (sensitivities and specificities for leave-one-out cross-validation: 82–96 %). The predictive performance of the E-tongue approach was further evaluated using an external independent dataset selected using the Kennard–Stone algorithm and, in general, better classification rates (sensitivities and specificities for external dataset: 67–100 %) were obtained compared to those achieved using physicochemical or sensorial data. So, the work carried out is a proof-of-principle that the proposed electrochemical device could be a practical and versatile tool for, in a single and fast electrochemical assay, successfully discriminate olive oils with different storage times and/or exposed to different light conditions.
      PubDate: 2017-04-01
      DOI: 10.1007/s00217-016-2773-2
      Issue No: Vol. 243, No. 4 (2017)
  • Aromatic character of Cabernet Sauvignon and Merlot wines produced with
           grapes dried under controlled conditions
    • Authors: Carolina P. Panceri; Vívian M. Burin; Vinícius Caliari; Renata D. M. C. Amboni; Marilde T. Bordignon-Luiz
      Pages: 609 - 618
      Abstract: Abstract This study evaluated the effect of grape dehydration under controlled conditions on the aromatic character of red wines based on the volatile composition and sensory analysis. The wines were produced with Cabernet Sauvignon and Merlot grapes dehydrated (30 g/100 g and 40 g/100 g) under controlled conditions, and grapes without dehydration (control wines). In relation to the aromatic character of the wines, their volatile composition was determined by gas chromatography and quantitative descriptive sensory analysis was carried out. The chemical composition of the musts was also determined, including nitrogen compounds, by liquid chromatography. The results for total ammonium and amino nitrogen contents were higher for the musts from grapes with 30 g/100 g dehydration. The volatile composition of the wines produced with dried grapes showed higher contents of aldehyde, vanillin derivatives and fatty acids compared with the control wines. Sensory analysis showed that wines produced from dried grapes presented higher intensities of coffee, wood, vanilla and alcohol aroma descriptors. Principal component analysis confirmed that the dehydration applied to the grapes altered the aromatic character of the wines, and vanillin derivatives and aldehydes were the main compounds involved in the distinct aroma of red wines produced with dried grapes by the studied process.
      PubDate: 2017-04-01
      DOI: 10.1007/s00217-016-2774-1
      Issue No: Vol. 243, No. 4 (2017)
  • Effects of liquefying crystallized honey by ultrasound on crystal size,
           5-hydroxymethylfurfural, colour, phenolic compounds and antioxidant
    • Authors: A. Quintero-Lira; A. Ángeles Santos; G. Aguirre-Álvarez; A. Reyes-Munguía; I. Almaraz-Buendía; R. G. Campos-Montiel
      Pages: 619 - 626
      Abstract: Abstract The objective of this study was to explore the effects of liquefying honey by ultrasound in five honeys with different botanical source. The ultrasound treatments were at a frequency of 42 kHz for 5, 10 and 15 min. The effects on crystal size, 5-hydroxymethylfurfural (HMF), colour, phenolic acids, flavonoids and antioxidant activity 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) and 1,1-diphenyl-2-picrylhydrazyl (DPPH) were investigated. The analysis of the honeys showed significant differences (p < 0.05) in all parameters. The honeys had similar but quantitatively different phenolic acid and flavonoid contents. The honeys that underwent ultrasound treatments exhibited significant differences (p < 0.05) in crystal size, colour and antioxidant activity (DPPH) but not in HMF (p > 0.05). The effect of ultrasound treatment on phenolic acids, flavonoids and antioxidant activity (ABTS) was different for each type of honey. Some honeys showed significant increases (p < 0.05) in phenolic acids, flavonoids and antioxidant activity after 15 min of ultrasound treatment. The ultrasound is an alternative to thermal treatment of the honey decrystallization without changing the HMF, and some honeys exhibit increased antioxidant activity.
      PubDate: 2017-04-01
      DOI: 10.1007/s00217-016-2775-0
      Issue No: Vol. 243, No. 4 (2017)
  • Bioactive peptides with radical scavenging and cancer cell cytotoxic
           activities derived from Flathead ( Platycephalus fuscus ) by-products
    • Authors: Rahmi Nurdiani; Todor Vasiljevic; Thomas Yeager; Tanoj K. Singh; Osaana N. Donkor
      Pages: 627 - 637
      Abstract: Abstract Peptide fractions extracted from Flathead by-products were evaluated for in vitro free radical scavenging and cancer cell cytotoxic activities. The degree of hydrolysis (DH), presence of protease and molecular weight (MW) influenced the 2,2-diphenyl-1-pycryl-hydrazyl (DPPH) and 2,2-azino-bis-3-ethylbenzothiazoline-6-sulphonic (ABTS) radical scavenging activities (RSA) of Flathead peptide fraction. Low MW peptides (<3 kDa), obtained from overnight incubation with added an exogenous protease, significantly inhibited free radicals and showed the highest RSA of 94.03 and 82.89 % against DPPH· and ABTS·+, respectively. The presence of bioactive peptides during H2O2 exposure increased viability of T4056 normal cells. Furthermore, peptide fractions <3 kDa inhibited the growth of HT-29 colon cancer cells up to 91.04 %, although the activity was found to be non-selective. Further purification revealed a novel peptide, Met-Gly-Pro-Pro-Gly-Leu-Ala-Gly-Ala-Pro-Gly-Glu-Ala-Gly-Arg, with RSA properties. These results indicated that peptides extracted from Flathead by-products have a potential to be used as natural antioxidants and/or chemo-protective agents.
      PubDate: 2017-04-01
      DOI: 10.1007/s00217-016-2776-z
      Issue No: Vol. 243, No. 4 (2017)
  • Influence of dietary components on minerals and trace elements
           bioaccessible fraction in organic weaning food: a probabilistic assessment
    • Authors: A. M. Ramírez-Ojeda; R. Moreno-Rojas; J. Sevillano-Morales; F. Cámara-Martos
      Pages: 639 - 650
      Abstract: Abstract The Fe, Zn, Mn, Cu, Ca and Mg contents as well as bioaccessible fractions of ten weaning foods characterized and commercialized with the attribute “organic” were analyzed in order to evaluate them nutritionally. The influence of several dietary components on minerals and trace elements bioaccessibility was also studied. It was observed a positive correlation (p < 0.05; r = 0.830) between protein content and Fe solubility for all samples analyzed with the exception of a jar. According with data supplied by manufacturer for this jar, the high solubility of Fe, despite the low protein content, could be due to the presence of vitamin C as ingredient. The influence of proteins was also observed in the dialysability of Zn (p < 0.01; r = 0.998) for the weaning food that incorporated meat or legumes (chickpeas) in their list of ingredients. On the other hand, the amount of Mn dialyzable was higher when a lower amount of fat was present in the jar formulation (p < 0.01; r = −0.781). Several interactions between trace elements were also observed, highlighting a positive soluble Cu–dialyzable Fe interaction (p < 0.01; r = 0.818). Trace elements concentration and bioaccessible values obtained were considerably lower than those reported for weaning food without the attribute organic. It has also developed estimation to the daily intake of these elements using a probabilistic approach. The contribution of Fe, Zn and Ca to the dietary reference intakes for jars studied was below 2.5 and 5 % considering soluble and total content values, respectively, for 50 % population.
      PubDate: 2017-04-01
      DOI: 10.1007/s00217-016-2777-y
      Issue No: Vol. 243, No. 4 (2017)
  • Effect of bug damage and mold contamination on fatty acids and sterols of
           hazelnut oil
    • Authors: Antonia Memoli; Donatella Albanese; Marco Esti; Claudio Lombardelli; Alessio Crescitelli; Marisa Di Matteo; Ilaria Benucci
      Pages: 651 - 658
      Abstract: Abstract Fatty acid and sterol content of oil from nuts (cv Tonda di Giffoni) affected by two different biotic damages were characterized. Hazelnuts were sorted by a visual inspection of the kernels in three different samples (cimiciate, apparently healthy and moldy). The oil was extracted and analyzed by gas–liquid chromatography coupled to a flame ionization detector for fatty acid and sterol composition. The higher level of total polyunsaturated fatty acids (PUFA) in cimiciato oil compared to apparently healthy nuts was associated with the decrease in total monounsaturated fatty acids, resulting in a higher unsaturated/saturated acid ratio, while the PUFA content in moldy nut oil was lower than in apparently healthy nut oil. In both damaged samples, the appearance of four new chromatography peaks could be due to the presence of hydroperoxides, as proved by carrying out a TLC analysis. The overall phytosterol amount decreased in both cimiciato and moldy nut oils compared to the apparently healthy nut oil, and the main differences were observed in terms of sitosterol, campesterol and clerosterol.
      PubDate: 2017-04-01
      DOI: 10.1007/s00217-016-2778-x
      Issue No: Vol. 243, No. 4 (2017)
  • Chemometric characterization of wines according to their HPTLC
    • Authors: Snezana Agatonovic-Kustrin; Dušanka Milojković-Opsenica; David W. Morton; Petar Ristivojević
      Pages: 659 - 667
      Abstract: Abstract The objective of this study was to determine which major grape varieties are present in a given wine using both high-performance thin-layer chromatography (HPTLC) fingerprinting and multivariate analysis. For this purpose, 40 mono- and multi-varietal commercial wine samples from four vintages between 2003 and 2012 were collected and analyzed for their polyphenolic composition using HPTLC peak profiles. Polyphenolic compounds such as gallic acid, caffeic acid, resveratrol and rutin (each belonging to one of the four common classes of wine polyphenolic antioxidants) were identified. Unsupervised chemometric method, principal component analysis was used to analyze variance in HPTLC patterns as a function of wine grape variety. An artificial neutral network, as the efficient supervised chemometric tool, was used to develop a predictive model for classification of wine samples and discrimination between them.
      PubDate: 2017-04-01
      DOI: 10.1007/s00217-016-2779-9
      Issue No: Vol. 243, No. 4 (2017)
  • Oxygen exposure of tannins-rich red wines during bottle aging. Influence
           on phenolics and color, astringency markers and sensory attributes
    • Authors: A. Gambuti; T. Siani; L. Picariello; A. Rinaldi; M. T. Lisanti; M. Ugliano; J. B. Dieval; L. Moio
      Pages: 669 - 680
      Abstract: Abstract Three Southern Italy red wines Aglianico, Casavecchia and Pallagrello with high content of total tannins but different initial anthocyanins composition were aged in bottle for 15 months with closures allowing different degrees of wine oxygen exposure. In all wines oxygen exposure resulted in a progressive decrease in monomeric anthocyanins, vanillin reactive flavans and content of tannins reactive toward salivary proteins. In contrast, no significant decrease in color intensity was detected due to the formation of polymeric pigments. For all wines, the closure with the highest oxygen ingress determined a higher intensity of red fruit notes.
      PubDate: 2017-04-01
      DOI: 10.1007/s00217-016-2780-3
      Issue No: Vol. 243, No. 4 (2017)
  • Effect of sequential inoculation ( Torulaspora delbrueckii/Saccharomyces
           cerevisiae ) in the first fermentation on the foaming properties of
           sparkling wine
    • Authors: Laura Medina-Trujillo; Elena González-Royo; Nathalie Sieczkowski; José Heras; Joan Miquel Canals; Fernando Zamora
      Pages: 681 - 688
      Abstract: Abstract In a previous study, we reported that sequential inoculation of Torulaspora delbrueckii (strain TD291) and a specific strain of Saccharomyces cerevisiae during the first fermentation increased the protein concentration and improved the foaming properties of a base wine. Since effervescence and foam of sparkling wines are key quality factors, the interest of this practice for sparkling wine industry is obvious. In this paper, we study whether the foaming properties of the sparkling wines produced from the base wines obtained by sequential inoculation with these strains of T. delbrueckii and S. cerevisiae remain better than those of their controls produced from base wines fermented only with S. cerevisiae. The obtained results confirmed that sequential inoculation in the production of the base wine originated sparkling wines with significantly higher maximum heights of foam than conventional inoculation, probably because autolysis of the T. delbrueckii (strain TD291) cells in the base wine released higher amounts of proteins, especially of the low molecular weight fraction.
      PubDate: 2017-04-01
      DOI: 10.1007/s00217-016-2781-2
      Issue No: Vol. 243, No. 4 (2017)
  • Codonopsis lanceolata and Nelumbo nucifera Gaertn. root extracts for
           functional food: metabolic profiling by MS, FTIR and fluorescence and
           evaluation of cytotoxicity and anti-obesity properties on 3T3-L1 cell line
    • Authors: Hee-Ock Boo; Hag-Hyun Kim; Dinorah Barasch; Alina Nemirovski; Moon-Soon Lee; Shela Gorinstein; Yang-Gyu Ku
      Pages: 689 - 700
      Abstract: The effects of bioactivity, binding properties, anti-obesity and antioxidant enzyme activities in different fractions from the roots of Codonopsis lanceolata [C. lanceolata (CL)] in comparison with Nelumbo nucifera Gaertn. [N. nucifera Gaertn (NN)] were evaluated in vitro. The rate of cell survival progressively decreased in a dose-dependent manner. Butyl alcohol fraction of CL exhibited a pronounced cytotoxic effect (75.73 %) comparable to that of hexane (79.82 %), following by methylene chloride (84.02 %), ethyl acetate (87.62 %) and water fractions (86.30 %) at the same concentration at 200 μg/mL on 3T3-L1 cells. Confluent 3T3-L1 cells were treated with 50 µg/mL of CL and NN extracts and then stained with Oil Red O solution. Inhibitory degree of lipid accumulation against these extracts showed a significant level compared with the control sample. Both lipid accumulation and adipocyte differentiation showed relatively high effects in methyl chloride fraction. Comparative results of cytotoxicity and inhibitory degree of lipid accumulation were obtained with extracts of N. nucifera Gaertn. roots. The root extract of C. lanceolata had the significantly highest SOD enzyme activity of 84.5 % in ethyl acetate fraction and the lowest in water (57.9 %). Similar correlations were found for CAT, APX and POD activities as the highest in ethyl acetate partition layer compared with the other fractions. The binding properties were determined by interaction of polyphenols extracts of CL and NN with human serum albumin. Overall results of properties of these two plants suggest that the roots of C. lanceolata and N. nucifera Gaertn. may assist in the potential biological activity on anti-obesity, cytotoxic, antioxidant and binding capacities as a part of functional food. Graphical CL, NN, Codonopsis lanceolata, Nelumbo nucifera Gaertn. I, II, Effects of solvent fractions on lipid accumulation in 3T3-L1 cells of CL, NN. Con, control; MC, methylene chloride fraction; III, IV, 3D-fluorescence spectra and corresponding contour maps (III, IV) of polyphenols of CL and NN in interaction with human serum albumin.
      PubDate: 2017-04-01
      DOI: 10.1007/s00217-016-2782-1
      Issue No: Vol. 243, No. 4 (2017)
  • Fructan stability in strawberry sorbets in dependence on their source and
           the period of storage
    • Authors: Kinga Topolska; Agnieszka Filipiak-Florkiewicz; Adam Florkiewicz; Ewa Cieslik
      Pages: 701 - 709
      Abstract: Abstract Many epidemiologic studies have shown a role of diet rich in fruits and vegetables in the prevention of several chronic diseases. Fructans are widely used in functional foods for their health-promoting and technological properties. Strawberry sorbets containing fructans could be an interesting alternative to traditional ice cream. The contents of fructan, glucose, fructose and sucrose were determined to evaluate their changes during storage of strawberry sorbets with three fructan sources: Jerusalem artichoke tubers, yacon root powder and Beneo Orafti Synergy 1. Analyses were performed immediately after product preparation, as well as during 3-month storage at −22 ± 2 °C, in the 2-week intervals. It was observed that the changes of the fructan content were insignificant during the first 2 weeks of storage in all sorbets. The decrease in fructan content was connected with the increase in the amount of glucose, fructose as well as sucrose, independently of fructan source. After 12 weeks of freezing storage, sorbet with Jerusalem artichoke tubers was characterized by the highest stability of fructans, as compared to the other products. The knowledge about the changes of carbohydrate content, especially fructans, during storage is crucial from nutritional point of view (to obtain product with the highest content of pro-healthy compounds).
      PubDate: 2017-04-01
      DOI: 10.1007/s00217-016-2783-0
      Issue No: Vol. 243, No. 4 (2017)
  • Purification and identification of an angiotensin I-converting
           enzyme-inhibitory peptide from Argopecten irradians mantle enzymatic
    • Authors: Bingyu Wu; Bingjun Qian; Qi Zhu; Chunlei Shi; Linyun Li; Xiaomin Yao; Jianhua Zhang
      Pages: 711 - 717
      Abstract: Abstract In this study, we purified angiotensin-converting enzyme (ACE)-inhibitory peptides from Argopecten irradians mantle enzymatic hydrolysates. One peptide was isolated from the final hydrolysate by RP-HPLC and its sequence VLIVP was identified. The IC50 of the peptide was measured to be 19.7 μmol/L. Lineweaver–Burk plots suggest that VLIVP is a competitive inhibitor against ACE with an inhibition constant (K i ) of 11.3 μmol/L. VLIVP was resistant to gastric-protease digestion in vitro, and its antihypertensive effects on spontaneously hypertensive rats following oral administration were determined as the blood pressure significantly decreased after peptide ingestion. These results suggest that scallop mantle is a potential source for purifying ingredients of health-promoting foods.
      PubDate: 2017-04-01
      DOI: 10.1007/s00217-016-2784-z
      Issue No: Vol. 243, No. 4 (2017)
  • Antihypertensive effects of Ile–Pro–Ile–Lys from krill ( Euphausia
           superba ) protein hydrolysates: purification, identification and in vivo
           evaluation in spontaneously hypertensive rats
    • Authors: Soo Yeon Park; Jae-Young Je; Nalae Kang; Eui Jeong Han; Ju Hyung Um; You-Jin Jeon; Ginnae Ahn; Chang-Bum Ahn
      Pages: 719 - 725
      Abstract: Abstract Angiotensin I-converting enzyme (ACE) inhibitory peptide was purified from krill (Euphausia superba) protein hydrolysate using consecutive chromatography using an SP-Sephadex C-25 cation exchanger and then reverse-phase high-performance liquid chromatography. The purified ACE inhibitory peptide was identified to be Ile–Pro–Ile–Lys with a molecular weight of 470.3 Da by LC–MS/MS. The IC50 value of Ile–Pro–Ile–Lys was 57.4 µM. Lineweaver–Burk plots suggest that Ile–Pro–Ile–Lys acts as a non-competitive inhibitor against ACE. Oral administration of Ile–Pro–Ile–Lys significantly (p < 0.05) decreased the systolic blood pressure of spontaneously hypertensive rats. Collectively, an antihypertensive peptide purified from krill protein hydrolysates may be useful as a food ingredient for treatment of hypertension and related diseases.
      PubDate: 2017-04-01
      DOI: 10.1007/s00217-016-2785-y
      Issue No: Vol. 243, No. 4 (2017)
  • Colour parameters as indicators of lycopene and antioxidant activity
           traits of cherry tomatoes ( Solanum lycopersicum L .)
    • Authors: László Sipos; Csaba Orbán; Ildikó Bálint; László Csambalik; Anna Divéky-Ertsey; Attila Gere
      Abstract: Abstract There is limited information available on lycopene content and antioxidant activity of new special coloured cherry tomatoes. We also lack data regarding the effects of on the correlation between the commonly applied colour formulas of surface, puree and lycopene content as well as the effect of extraction solvent on the results of antioxidant activity assays. In this study 11 cherry tomatoes including 5 colours (red, bright red, red-green, yellow, orange) from commercial trade were assessed. Surface and puree colours were determined by a hand-top colorimeter using Lab colour space. Lycopene content was measured as well as the FRAP-, DPPH-, CUPRAC-, ABTS- and TPC-assay following extraction by either water, ethanol or methanol. Our results indicate that the most commonly applied formulas are not disturbed by the special coloured varieties. The colour of puree correlated better with the lycopene content than the values measured on the surface. The method-extraction combination ranking showed that the CUPRAC-EtOH and supernatant ones were the best to distinguish cherry tomato samples. Correlation of chromaticity values was strong with the FRAP-assay and with the DPPH-method. We can conclude that colour parameters as indicators of lycopene content are not disturbed by the special coloured varieties and also have some correlation with antioxidant-capacity assays.
      PubDate: 2017-03-20
      DOI: 10.1007/s00217-017-2862-x
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