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Publisher: Springer-Verlag (Total: 2355 journals)

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Showing 1 - 200 of 2355 Journals sorted alphabetically
3D Research     Hybrid Journal   (Followers: 19, SJR: 0.214, h-index: 10)
4OR: A Quarterly J. of Operations Research     Hybrid Journal   (Followers: 10, SJR: 1.073, h-index: 25)
AAPS J.     Hybrid Journal   (Followers: 21, SJR: 1.192, h-index: 74)
AAPS PharmSciTech     Hybrid Journal   (Followers: 6, SJR: 0.718, h-index: 54)
Abdominal Imaging     Hybrid Journal   (Followers: 14, SJR: 0.723, h-index: 60)
Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg     Hybrid Journal   (Followers: 3, SJR: 0.447, h-index: 12)
Academic Psychiatry     Full-text available via subscription   (Followers: 23, SJR: 0.492, h-index: 32)
Academic Questions     Hybrid Journal   (Followers: 8, SJR: 0.135, h-index: 6)
Accreditation and Quality Assurance: J. for Quality, Comparability and Reliability in Chemical Measurement     Hybrid Journal   (Followers: 26, SJR: 0.378, h-index: 30)
Acoustical Physics     Hybrid Journal   (Followers: 11, SJR: 0.355, h-index: 20)
Acoustics Australia     Hybrid Journal  
Acta Analytica     Hybrid Journal   (Followers: 7, SJR: 0.387, h-index: 6)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 1, SJR: 0.624, h-index: 34)
Acta Biotheoretica     Hybrid Journal   (Followers: 5, SJR: 0.419, h-index: 25)
Acta Diabetologica     Hybrid Journal   (Followers: 13, SJR: 1.318, h-index: 46)
Acta Endoscopica     Hybrid Journal   (Followers: 1, SJR: 0.113, h-index: 8)
acta ethologica     Hybrid Journal   (Followers: 4, SJR: 0.465, h-index: 23)
Acta Geochimica     Hybrid Journal   (Followers: 6)
Acta Geodaetica et Geophysica     Hybrid Journal   (Followers: 2, SJR: 0.294, h-index: 13)
Acta Geotechnica     Hybrid Journal   (Followers: 7, SJR: 1.818, h-index: 22)
Acta Informatica     Hybrid Journal   (Followers: 5, SJR: 0.524, h-index: 32)
Acta Mathematica     Hybrid Journal   (Followers: 11, SJR: 8.021, h-index: 47)
Acta Mathematica Hungarica     Hybrid Journal   (Followers: 2, SJR: 0.53, h-index: 29)
Acta Mathematica Sinica, English Series     Hybrid Journal   (Followers: 6, SJR: 0.406, h-index: 30)
Acta Mathematica Vietnamica     Hybrid Journal   (SJR: 0.451, h-index: 5)
Acta Mathematicae Applicatae Sinica, English Series     Hybrid Journal   (SJR: 0.22, h-index: 20)
Acta Mechanica     Hybrid Journal   (Followers: 20, SJR: 0.898, h-index: 52)
Acta Mechanica Sinica     Hybrid Journal   (Followers: 5, SJR: 0.426, h-index: 29)
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (Followers: 5, SJR: 0.525, h-index: 18)
Acta Meteorologica Sinica     Hybrid Journal   (Followers: 3, SJR: 0.524, h-index: 14)
Acta Neurochirurgica     Hybrid Journal   (Followers: 6, SJR: 0.833, h-index: 73)
Acta Neurologica Belgica     Hybrid Journal   (Followers: 1, SJR: 0.348, h-index: 27)
Acta Neuropathologica     Hybrid Journal   (Followers: 5, SJR: 6.61, h-index: 117)
Acta Oceanologica Sinica     Hybrid Journal   (Followers: 3, SJR: 0.295, h-index: 17)
Acta Parasitologica     Hybrid Journal   (Followers: 9, SJR: 0.581, h-index: 28)
Acta Physiologiae Plantarum     Hybrid Journal   (Followers: 2, SJR: 0.551, h-index: 39)
Acta Politica     Hybrid Journal   (Followers: 13, SJR: 0.658, h-index: 20)
Activitas Nervosa Superior     Hybrid Journal  
adhäsion KLEBEN & DICHTEN     Hybrid Journal   (Followers: 5, SJR: 0.103, h-index: 4)
ADHD Attention Deficit and Hyperactivity Disorders     Hybrid Journal   (Followers: 22, SJR: 0.871, h-index: 15)
Adhesion Adhesives & Sealants     Hybrid Journal   (Followers: 8)
Administration and Policy in Mental Health and Mental Health Services Research     Partially Free   (Followers: 15, SJR: 0.795, h-index: 40)
Adsorption     Hybrid Journal   (Followers: 4, SJR: 0.774, h-index: 52)
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 3, SJR: 0.319, h-index: 15)
Advances in Atmospheric Sciences     Hybrid Journal   (Followers: 34, SJR: 0.959, h-index: 44)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 15, SJR: 1.255, h-index: 44)
Advances in Contraception     Hybrid Journal   (Followers: 3)
Advances in Data Analysis and Classification     Hybrid Journal   (Followers: 52, SJR: 1.113, h-index: 14)
Advances in Gerontology     Partially Free   (Followers: 8, SJR: 0.141, h-index: 3)
Advances in Health Sciences Education     Hybrid Journal   (Followers: 25, SJR: 1.397, h-index: 42)
Advances in Manufacturing     Hybrid Journal   (Followers: 3, SJR: 0.2, h-index: 4)
Advances in Polymer Science     Hybrid Journal   (Followers: 41, SJR: 0.637, h-index: 89)
Advances in Therapy     Hybrid Journal   (Followers: 5, SJR: 0.79, h-index: 44)
Aegean Review of the Law of the Sea and Maritime Law     Hybrid Journal   (Followers: 7)
Aequationes Mathematicae     Hybrid Journal   (Followers: 2, SJR: 0.882, h-index: 23)
Aerobiologia     Hybrid Journal   (Followers: 2, SJR: 0.511, h-index: 36)
Aesthetic Plastic Surgery     Hybrid Journal   (Followers: 9, SJR: 0.821, h-index: 49)
African Archaeological Review     Hybrid Journal   (Followers: 16, SJR: 0.612, h-index: 24)
Afrika Matematika     Hybrid Journal   (Followers: 1, SJR: 0.248, h-index: 6)
AGE     Hybrid Journal   (Followers: 7, SJR: 1.358, h-index: 33)
Ageing Intl.     Hybrid Journal   (Followers: 7, SJR: 0.337, h-index: 10)
Aggiornamenti CIO     Hybrid Journal   (Followers: 1)
Aging Clinical and Experimental Research     Hybrid Journal   (Followers: 3, SJR: 0.529, h-index: 55)
Agricultural Research     Hybrid Journal   (Followers: 3)
Agriculture and Human Values     Hybrid Journal   (Followers: 13, SJR: 1.197, h-index: 49)
Agroforestry Systems     Hybrid Journal   (Followers: 19, SJR: 0.64, h-index: 56)
Agronomy for Sustainable Development     Hybrid Journal   (Followers: 10, SJR: 1.732, h-index: 59)
AI & Society     Hybrid Journal   (Followers: 6, SJR: 0.171, h-index: 19)
AIDS and Behavior     Hybrid Journal   (Followers: 13, SJR: 2.006, h-index: 71)
Air Quality, Atmosphere & Health     Hybrid Journal   (Followers: 4, SJR: 0.706, h-index: 19)
Akupunktur & Aurikulomedizin     Full-text available via subscription   (Followers: 1)
Algebra and Logic     Hybrid Journal   (Followers: 4, SJR: 0.566, h-index: 18)
Algebra Universalis     Hybrid Journal   (Followers: 2, SJR: 0.388, h-index: 22)
Algebras and Representation Theory     Hybrid Journal   (Followers: 1, SJR: 0.868, h-index: 20)
Algorithmica     Hybrid Journal   (Followers: 8, SJR: 0.898, h-index: 56)
Allergo J.     Full-text available via subscription   (Followers: 1, SJR: 0.183, h-index: 20)
Allergo J. Intl.     Hybrid Journal   (Followers: 2)
Alpine Botany     Hybrid Journal   (Followers: 5, SJR: 0.729, h-index: 20)
ALTEX : Alternatives to Animal Experimentation     Open Access   (Followers: 3, SJR: 1.392, h-index: 32)
AMBIO     Hybrid Journal   (Followers: 15, SJR: 1.094, h-index: 87)
American J. of Cardiovascular Drugs     Hybrid Journal   (Followers: 15, SJR: 0.864, h-index: 39)
American J. of Community Psychology     Hybrid Journal   (Followers: 25, SJR: 1.237, h-index: 83)
American J. of Criminal Justice     Hybrid Journal   (Followers: 8, SJR: 0.634, h-index: 13)
American J. of Cultural Sociology     Hybrid Journal   (Followers: 14, SJR: 0.283, h-index: 3)
American J. of Dance Therapy     Hybrid Journal   (Followers: 4, SJR: 0.175, h-index: 13)
American J. of Potato Research     Hybrid Journal   (Followers: 2, SJR: 0.558, h-index: 35)
American J. of Psychoanalysis     Hybrid Journal   (Followers: 22, SJR: 0.293, h-index: 13)
American Sociologist     Hybrid Journal   (Followers: 14, SJR: 0.18, h-index: 13)
Amino Acids     Hybrid Journal   (Followers: 8, SJR: 1.362, h-index: 83)
AMS Review     Partially Free   (Followers: 4)
Analog Integrated Circuits and Signal Processing     Hybrid Journal   (Followers: 7, SJR: 0.21, h-index: 37)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 3, SJR: 0.665, h-index: 7)
Analysis in Theory and Applications     Hybrid Journal   (Followers: 1)
Analysis of Verbal Behavior     Hybrid Journal   (Followers: 5)
Analytical and Bioanalytical Chemistry     Hybrid Journal   (Followers: 30, SJR: 1.096, h-index: 123)
Anatomical Science Intl.     Hybrid Journal   (Followers: 2, SJR: 0.301, h-index: 26)
Angewandte Schmerztherapie und Palliativmedizin     Hybrid Journal  
Angiogenesis     Hybrid Journal   (Followers: 3, SJR: 2.212, h-index: 69)
Animal Cognition     Hybrid Journal   (Followers: 16, SJR: 1.122, h-index: 55)
Annales françaises de médecine d'urgence     Hybrid Journal   (Followers: 1, SJR: 0.156, h-index: 4)
Annales Henri Poincaré     Hybrid Journal   (Followers: 3, SJR: 1.377, h-index: 32)
Annales mathématiques du Québec     Hybrid Journal   (Followers: 4)
Annali dell'Universita di Ferrara     Hybrid Journal   (SJR: 0.504, h-index: 14)
Annali di Matematica Pura ed Applicata     Hybrid Journal   (Followers: 1, SJR: 1.167, h-index: 26)
Annals of Behavioral Medicine     Hybrid Journal   (Followers: 12, SJR: 2.112, h-index: 98)
Annals of Biomedical Engineering     Hybrid Journal   (Followers: 18, SJR: 1.182, h-index: 94)
Annals of Combinatorics     Hybrid Journal   (Followers: 3, SJR: 0.849, h-index: 15)
Annals of Data Science     Hybrid Journal   (Followers: 11)
Annals of Dyslexia     Hybrid Journal   (Followers: 10, SJR: 0.857, h-index: 40)
Annals of Finance     Hybrid Journal   (Followers: 28, SJR: 0.686, h-index: 14)
Annals of Forest Science     Hybrid Journal   (Followers: 6, SJR: 0.929, h-index: 57)
Annals of Global Analysis and Geometry     Hybrid Journal   (Followers: 1, SJR: 1.136, h-index: 23)
Annals of Hematology     Hybrid Journal   (Followers: 15, SJR: 1.117, h-index: 62)
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 8, SJR: 0.593, h-index: 42)
Annals of Microbiology     Hybrid Journal   (Followers: 10, SJR: 0.402, h-index: 26)
Annals of Nuclear Medicine     Hybrid Journal   (Followers: 5, SJR: 0.68, h-index: 45)
Annals of Operations Research     Hybrid Journal   (Followers: 10, SJR: 1.186, h-index: 78)
Annals of Ophthalmology     Hybrid Journal   (Followers: 12)
Annals of Regional Science     Hybrid Journal   (Followers: 8, SJR: 0.405, h-index: 42)
Annals of Software Engineering     Hybrid Journal   (Followers: 13)
Annals of Solid and Structural Mechanics     Hybrid Journal   (Followers: 10, SJR: 0.553, h-index: 8)
Annals of Surgical Oncology     Hybrid Journal   (Followers: 14, SJR: 1.902, h-index: 127)
Annals of Telecommunications     Hybrid Journal   (Followers: 7, SJR: 0.315, h-index: 25)
Annals of the Institute of Statistical Mathematics     Hybrid Journal   (Followers: 1, SJR: 0.931, h-index: 31)
Antonie van Leeuwenhoek     Hybrid Journal   (Followers: 5, SJR: 0.992, h-index: 87)
Apidologie     Hybrid Journal   (Followers: 4, SJR: 1.14, h-index: 57)
APOPTOSIS     Hybrid Journal   (Followers: 8, SJR: 1.554, h-index: 87)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 2, SJR: 0.354, h-index: 27)
Applications of Mathematics     Hybrid Journal   (Followers: 1, SJR: 0.274, h-index: 20)
Applied Biochemistry and Biotechnology     Hybrid Journal   (Followers: 42, SJR: 0.575, h-index: 80)
Applied Biochemistry and Microbiology     Hybrid Journal   (Followers: 16, SJR: 0.267, h-index: 26)
Applied Cancer Research     Open Access  
Applied Categorical Structures     Hybrid Journal   (Followers: 2, SJR: 0.361, h-index: 21)
Applied Composite Materials     Hybrid Journal   (Followers: 48, SJR: 0.705, h-index: 35)
Applied Entomology and Zoology     Partially Free   (Followers: 3, SJR: 0.554, h-index: 34)
Applied Geomatics     Hybrid Journal   (Followers: 4, SJR: 0.323, h-index: 9)
Applied Geophysics     Hybrid Journal   (Followers: 8, SJR: 0.541, h-index: 13)
Applied Intelligence     Hybrid Journal   (Followers: 11, SJR: 0.777, h-index: 43)
Applied Magnetic Resonance     Hybrid Journal   (Followers: 4, SJR: 0.358, h-index: 34)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 4, SJR: 0.955, h-index: 33)
Applied Mathematics - A J. of Chinese Universities     Hybrid Journal   (SJR: 0.275, h-index: 8)
Applied Mathematics and Mechanics     Hybrid Journal   (Followers: 5, SJR: 0.37, h-index: 26)
Applied Microbiology and Biotechnology     Hybrid Journal   (Followers: 61, SJR: 1.262, h-index: 161)
Applied Physics A     Hybrid Journal   (Followers: 7, SJR: 0.535, h-index: 121)
Applied Physics B: Lasers and Optics     Hybrid Journal   (Followers: 23, SJR: 0.983, h-index: 104)
Applied Psychophysiology and Biofeedback     Hybrid Journal   (Followers: 8, SJR: 0.677, h-index: 47)
Applied Research in Quality of Life     Hybrid Journal   (Followers: 11, SJR: 0.288, h-index: 15)
Applied Solar Energy     Hybrid Journal   (Followers: 17, SJR: 0.251, h-index: 6)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 5, SJR: 0.351, h-index: 9)
Aquaculture Intl.     Hybrid Journal   (Followers: 22, SJR: 0.613, h-index: 40)
Aquarium Sciences and Conservation     Hybrid Journal   (Followers: 1)
Aquatic Ecology     Hybrid Journal   (Followers: 32, SJR: 0.646, h-index: 44)
Aquatic Geochemistry     Hybrid Journal   (Followers: 4, SJR: 0.764, h-index: 39)
Aquatic Sciences     Hybrid Journal   (Followers: 13, SJR: 1.172, h-index: 53)
Arabian J. for Science and Engineering     Hybrid Journal   (Followers: 5, SJR: 0.345, h-index: 20)
Arabian J. of Geosciences     Hybrid Journal   (Followers: 1, SJR: 0.417, h-index: 16)
Archaeological and Anthropological Sciences     Hybrid Journal   (Followers: 23, SJR: 1.056, h-index: 15)
Archaeologies     Hybrid Journal   (Followers: 12, SJR: 0.397, h-index: 13)
Archiv der Mathematik     Hybrid Journal   (Followers: 1, SJR: 0.597, h-index: 29)
Archival Science     Hybrid Journal   (Followers: 56, SJR: 0.804, h-index: 22)
Archive for History of Exact Sciences     Hybrid Journal   (Followers: 8, SJR: 0.28, h-index: 15)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 1, SJR: 0.946, h-index: 23)
Archive for Rational Mechanics and Analysis     Hybrid Journal   (SJR: 4.091, h-index: 66)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 5, SJR: 0.865, h-index: 40)
Archives and Museum Informatics     Hybrid Journal   (Followers: 132)
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 4, SJR: 2.841, h-index: 40)
Archives of Dermatological Research     Hybrid Journal   (Followers: 7, SJR: 0.9, h-index: 65)
Archives of Environmental Contamination and Toxicology     Hybrid Journal   (Followers: 12, SJR: 0.846, h-index: 84)
Archives of Gynecology and Obstetrics     Hybrid Journal   (Followers: 17, SJR: 0.695, h-index: 47)
Archives of Microbiology     Hybrid Journal   (Followers: 8, SJR: 0.702, h-index: 85)
Archives of Orthopaedic and Trauma Surgery     Hybrid Journal   (Followers: 8, SJR: 1.039, h-index: 56)
Archives of Osteoporosis     Hybrid Journal   (Followers: 2, SJR: 1.092, h-index: 13)
Archives of Sexual Behavior     Hybrid Journal   (Followers: 10, SJR: 1.198, h-index: 74)
Archives of Toxicology     Hybrid Journal   (Followers: 17, SJR: 1.595, h-index: 76)
Archives of Virology     Hybrid Journal   (Followers: 5, SJR: 1.086, h-index: 90)
Archives of Women's Mental Health     Hybrid Journal   (Followers: 14, SJR: 1.264, h-index: 50)
Archivio di Ortopedia e Reumatologia     Hybrid Journal  
Archivum Immunologiae et Therapiae Experimentalis     Hybrid Journal   (Followers: 2, SJR: 1.2, h-index: 42)
ArgoSpine News & J.     Hybrid Journal   (SJR: 0.102, h-index: 3)
Argumentation     Hybrid Journal   (Followers: 5, SJR: 0.295, h-index: 18)
Arid Ecosystems     Hybrid Journal   (Followers: 3)
Arkiv för Matematik     Hybrid Journal   (Followers: 1, SJR: 0.948, h-index: 22)
Arnold Mathematical J.     Hybrid Journal   (Followers: 1)
Arthropod-Plant Interactions     Hybrid Journal   (Followers: 2, SJR: 0.797, h-index: 17)
Arthroskopie     Hybrid Journal   (Followers: 1, SJR: 0.145, h-index: 8)
Artificial Intelligence and Law     Hybrid Journal   (Followers: 11, SJR: 0.288, h-index: 25)
Artificial Intelligence Review     Hybrid Journal   (Followers: 14, SJR: 0.948, h-index: 48)
Artificial Life and Robotics     Hybrid Journal   (Followers: 8, SJR: 0.231, h-index: 14)
Asia Europe J.     Hybrid Journal   (Followers: 5, SJR: 0.247, h-index: 9)
Asia Pacific Education Review     Hybrid Journal   (Followers: 12, SJR: 0.371, h-index: 17)
Asia Pacific J. of Management     Hybrid Journal   (Followers: 16, SJR: 1.676, h-index: 50)
Asia-Pacific Education Researcher     Hybrid Journal   (Followers: 12, SJR: 0.353, h-index: 13)
Asia-Pacific Financial Markets     Hybrid Journal   (Followers: 2, SJR: 0.19, h-index: 15)
Asia-Pacific J. of Atmospheric Sciences     Hybrid Journal   (Followers: 20, SJR: 1.006, h-index: 14)
Asian Business & Management     Hybrid Journal   (Followers: 8, SJR: 0.41, h-index: 10)
Asian J. of Business Ethics     Hybrid Journal   (Followers: 7)
Asian J. of Criminology     Hybrid Journal   (Followers: 5, SJR: 0.263, h-index: 8)
AStA Advances in Statistical Analysis     Hybrid Journal   (Followers: 2, SJR: 0.681, h-index: 15)
AStA Wirtschafts- und Sozialstatistisches Archiv     Hybrid Journal   (Followers: 5, SJR: 0.195, h-index: 5)
ästhetische dermatologie & kosmetologie     Full-text available via subscription  

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Journal Cover Applied Biochemistry and Microbiology
  [SJR: 0.267]   [H-I: 26]   [16 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1608-3024 - ISSN (Online) 0003-6838
   Published by Springer-Verlag Homepage  [2355 journals]
  • Specific features of chitosan depolymerization by chitinases,
           chitosanases, and nonspecific enzymes in the production of bioactive
           chitooligosaccharides (Review)
    • Authors: G. E. Aktuganov; A. I. Melent’ev
      Pages: 611 - 627
      Abstract: Abstract The data on features of the hydrolytic cleavage of chitosan by different groups of specific and nonspecific enzymes are summarized. Alternative approaches to the production of chitooligomers and their derivatives are also briefly considered.
      PubDate: 2017-11-01
      DOI: 10.1134/s0003683817060023
      Issue No: Vol. 53, No. 6 (2017)
       
  • Oxylipins and oxylipin synthesis pathways in fungi
    • Authors: N. N. Gessler; S. Yu. Filippovich; G. P. Bachurina; E. A. Kharchenko; N. V. Groza; T. A. Belozerskaya
      Pages: 628 - 639
      Abstract: Abstract Oxylipins are a family of oxygenated fatty acids that are very diverse with regard to origin, structure, and functions. These compounds are found in almost all living beings and serve both as autoregulators of the development of organisms and as communication molecules. The autoregulatory role of oxylipins in fungi is to control the development, reproduction, synthesis of secondary metabolites (including mycotoxins), and adaptive responses. The role of oxylipins in the regulation of pathogenesis accounts for an important aspect of research on the biological activity of these compounds. The synthetic pathways and functions of oxylipins of fungi, the differences between fungal oxylipins and oxylipins from bacteria, higher plants, and mammals, and the role of oxylipins in the interaction of fungi with other organisms are considered in the present review.
      PubDate: 2017-11-01
      DOI: 10.1134/s0003683817060060
      Issue No: Vol. 53, No. 6 (2017)
       
  • Cultivation of the microalga Neochloris oleoabundans for biofuels
           production and other industrial applications (a review)
    • Authors: H. A. Abu Hajar; R. G. Riefler; B. J. Stuart
      Pages: 640 - 653
      Abstract: Abstract Microalgae cultivation for biofuels production and other applications has gained considerable interest recently. Despite their simple structures, microalgae can accumulate significant amounts of neutral lipids per dry cell weight compared to other energy crops. Neochloris oleoabundans is a promising microalga known for its high lipid content and biomass growth rate compared to other species cultivated for biofuels synthesis; therefore, it is considered as a suitable candidate for biodiesel synthesis. This review paper covers several key aspects associated with the cultivation and applications of the microalga N. oleoabundans. Biomass composition, factors affecting the growth, and biomass and lipid productivities of this species were addressed. In addition, different growth conditions as well as alternative readily available nutrient media to support the growth of N. oleoabundans were presented in this review.
      PubDate: 2017-11-01
      DOI: 10.1134/s0003683817060096
      Issue No: Vol. 53, No. 6 (2017)
       
  • Feruloyl esterase from Alternaria tenuissima that hydrolyses
           lignocellulosic material to release hydroxycinnamic acids
    • Authors: D. H. Chi; V. D. Giap; L. P. H. Anh; D. H. Nghi
      Pages: 654 - 660
      Abstract: Abstract An extracellular feruloyl esterase from the culture filtrates of the isolated fungus Alternaria tenuissima was successfully purified to apparent homogeneity by anion-exchange and size-exclusion chromatography. Peptide fragments of purified enzyme (designated as AltFAE; molecular weight of 30.3 kDa determined by SDS-PAGE) were identified by mass spectrometry using a NanoLC-ESI-MS/MS system. Michaelis-Menten constants (K M) and catalytic efficiencies (k cat/K M) were determined for typical substrates of feruloyl esterase, and the lowest K M of 50.6 μM (i.e., the highest affinity) and the highest k cat/K M (3.1 × 105 s—1 M–1) were observed for methyl p-coumarate and methyl ferulate, respectively. Not least, AltFAE catalyzed conversion of lignocellulosic material (e.g. wood meal) to release hydroxycinnamic products, i.e. ferulic- and p-coumaric acids.
      PubDate: 2017-11-01
      DOI: 10.1134/s0003683817060047
      Issue No: Vol. 53, No. 6 (2017)
       
  • Expression of the zebrafish β-defensin 3 mature peptide in Pichia
           pastoris and its purification and antibacterial activity
    • Authors: Y. Tao; C. F. Song; W. Li
      Pages: 661 - 668
      Abstract: Abstract Defensins are abundant in cells and tissues that are involved in host defense against microbial infections. zfDB3 (zebrafish β-defensin 3) is one of 3 copies of defensin β-like genes from zebrafish (Danio rerio). Here we focus on mzfDB3, which is the gene encoding for the zebrafish β-defensin 3 mature peptide. A codon-optimized mzfDB3 gene with a 6×His-tag at the 3′-end was inserted into the pPICZαA expression vector and transformed into Pichia pastoris X-33 cells. The recombinant zebrafish β-defensin 3 mature peptide (rmzfDB3) was induced with 1.0% methanol at 29°C for 72 h and purified by immobilized metal affinity chromatography. MALDI-TOF/TOF analysis confirmed the expected purified product (rmzfDB3, 5.9 kDa). Fermentation supernatant, which contained rmzfDB3, showed antibacterial activity against Grampositive (i.e., Listeria monocytogenes, Staphylococcus aureus, and Bacillus cereus) and Gram-negative (i.e., Escherchia coli BL21, Vibrio parahaemolyticus, Salmonella lignieres, and Pseudomonas aeruginosa) bacteria.
      PubDate: 2017-11-01
      DOI: 10.1134/s0003683817060126
      Issue No: Vol. 53, No. 6 (2017)
       
  • Rational design of enzyme compositions for the production of functional
           hydrolysates of cow milk whey proteins
    • Authors: A. A. Torkova; K. A. Ryazantseva; E. Yu. Agarkova; A. G. Kruchinin; M. Yu. Tsentalovich; T. V. Fedorova
      Pages: 669 - 679
      Abstract: Abstract The design of enzyme compositions for the preparation of functional hydrolysates of whey proteins is studied. Analysis of the protein profiles of the whey from hard, semihard, and soft cheeses showed that the whey contains 50–63% β-lactoglobulin, 19–20% α-lactalbumin, and up to 11% κ-casein. According to the protein profile, the whey from Circassian cheese contains 76% casein (α-, β-, and κ-casein), 12% β-lactoglobulin, and 12% α-lactalbumin. Based on the in silico analysis, the rational design of a multienzyme composition was carried out for the hydrolysis of whey with a known protein composition taking into account the content of amino acid descriptors of biological activity and bitter taste. For the hydrolysis of whey from hard (Montazio), soft (Mozzarella and Gorgonzola), and semihard (Caciotta) cheeses, the determined optimum ratio of the Protamex and Alcalase enzymes was 3.0: 1.0% (90 min, 50°С). For soft pickled unripened cheese (Circassian), the optimum ratio of the Thermolysin and Alcalase enzymes was 2.0: 1.0% (60°С, 120 min). The use of the bioinformatics approach made it possible to obtain hydrolysates with acceptable organoleptic properties and predetermined antioxidant (400–500 μM TE/g protein) and antihypertensive (IC50 537–2500 mg protein/L) activities.
      PubDate: 2017-11-01
      DOI: 10.1134/s0003683817060138
      Issue No: Vol. 53, No. 6 (2017)
       
  • Plant protein hydrolysates as fish fry feed in aquaculture. Hydrolysis of
           rapeseed proteins by an enzyme complex from king crab hepatopancreas
    • Authors: T. A. Muranova; D. V. Zinchenko; S. V. Kononova; N. A. Belova; A. I. Miroshnikov
      Pages: 680 - 687
      Abstract: Abstract Rapeseed proteins were processed by an enzyme complex isolated from king crab hepatopancreas in order to obtain a hydrolysate for use as fish fry feed. The amino acid composition of the obtained protein preparation was close to the amino acid composition of fishmeal traditionally used in the production of fish feed. SDS-PAGE, HPLC, and mass spectrometric analysis of the products of enzymatic hydrolysis of rapeseed proteins showed that the proteins were hydrolyzed to a high degree. The composition of the hydrolysates depended on the hydrolysis time and included free amino acids (27% of the total weight of the protein mix after 3 h of hydrolysis and 56% after 21 h of hydrolysis), short peptides (2 to 20 amino acid residues), and small amounts of protein fragments with a molecular weight of approximately 14 kDa, as shown by by SDS-PAG electrophoresis.
      PubDate: 2017-11-01
      DOI: 10.1134/s0003683817060102
      Issue No: Vol. 53, No. 6 (2017)
       
  • Creation of thermostable polypeptide cassettes for amino acid balancing in
           farm animal rations
    • Authors: D. V. Grishin; Yu. A. Gladilina; S. S. Aleksandrova; M. V. Pokrovskaya; O. V. Podobed; V. S. Pokrovskii; D. D. Zhdanov; N. N. Sokolov
      Pages: 688 - 698
      Abstract: Abstract The study of the poultry needs in basic nutrients allowed the development of a scheme for obtaining feed polypeptides (“polypeptide cassettes”) enriched with L-amino acids, which are necessary for the metabolism of birds. The amino acid and nucleotide profiles of about 500 bioinformation sequences of thermostable plant proteins and archaea were studied, on the basis of which candidate sequences were selected. In silico, the amino acid and domain composition of the thermostable polypeptides has been optimized. A library of genetically engineered constructs encoding optimized polypeptides with the necessary composition of L-amino acids irreplaceable for poultry has been created. Primary E. coli producer strains were obtained, and the expression and thermostability of the target polypeptides were studied.
      PubDate: 2017-11-01
      DOI: 10.1134/s0003683817060072
      Issue No: Vol. 53, No. 6 (2017)
       
  • Activity of Na + /K + -ATPase and the content of phospholipids in the blue
           mussel Mytilus edulis L. during environmental temperature changes
    • Authors: N. N. Nemova; E. I. Kaivarainen; N. N. Fokina
      Pages: 699 - 702
      Abstract: Abstract Changes in the activity of Na+/K+-ATPase and content of membrane lipids (phospholipids) in the gills and hepatopancreas of the blue mussel Mytilus edulis L. have been studied during a sharp temperature increase under aquarian managed conditions. The most pronounced changes were recorded in mollusk gills. A correlation of changes in the activity of membrane-bound Na+/K+-ATPase and phospholipid content (mainly phosphatidylserine, phosphatidylinositol, phosphatidylethanolamine, and lysophosphatidylcholine) was revealed; this correlation evidences their mutual involvement in compensation for the temperature effect to help mussels adapt to sharp temperature changes.
      PubDate: 2017-11-01
      DOI: 10.1134/s0003683817060114
      Issue No: Vol. 53, No. 6 (2017)
       
  • Antimicrobial potential of alkalophilic micromycetes Emericellopsis
           alkalina
    • Authors: A. A. Baranova; M. L. Georgieva; E. N. Bilanenko; Ya. A. Andreev; E. A. Rogozhin; V. S. Sadykova
      Pages: 703 - 710
      Abstract: Abstract The ability of alkalophilic micromycetes of the Emericellopsis alkalinа to produce antimicrobial peptides has been studied. Evaluation of the spectrum and the yield of antibiotic compounds has allowed us to choose a promising producer of peptide antimycotics, Emericellopsis аlkalinа А118. The producer exhibits antifungal activity against conditionally pathogenic yeast and mold fungi, i.e., Candida аlbicans, Aspergillus niger, and A. fumigatus. The group of homologous active compounds isolated by the set of identified structural features (molecular weight, the ratio of the absorption at certain wavelengths, and the absence of initiation of Edman sequencing) may be attributed to peptaibols, which are a group of nonribosomal membrane-active antimicrobial peptides with a specificity of action primarily against fungi-micromycetes.
      PubDate: 2017-11-01
      DOI: 10.1134/s0003683817060035
      Issue No: Vol. 53, No. 6 (2017)
       
  • Effect of potassium sorbate, sodium benzoate, and sodium nitrite on
           biosynthesis of cyclopiazonic and mycophenolic acids and citrinin by fungi
           of the Penicillium genus
    • Authors: V. P. Zhelifonova; T. V. Antipova; A. G. Kozlovskii
      Pages: 711 - 714
      Abstract: Abstract The effect of potassium sorbate, sodium benzoate, and sodium nitrite used as preservatives in the food industry in the production of such mytotoxins as citrinin cyclopiazonic and mycophenolic acids by the contaminating fungi Penicillium citrinum, P. commune, and P. brevicompactum, respectively, was investigated. It was shown that the effect of preservatives used at concentrations relevant to the food industry on the synthesis of mycotoxins depended on the species-specific biochemical and physiological features of the cultures. The growth of P. brevicompactum was inhibited to the highest degree by sodium nitrite and potassium sorbate, and the growth of P. commune was so inhibited by sodium benzoate. It was established that the introduction of 0.015% sodium nitrite into the medium resulted in 1.3- and 1.4-fold reductions of the production of citrinin and mycophenolic acid, respectively, while the production of cyclopiazonic acid did not change in comparison with the control. The introduction of 0.015% sodium benzoate caused a more than 1.5-fold increase of the concentration of citrinin, cyclopiazonic, and mycophenolic acids, and the addition of 0.02% potassium sorbate increased the production of cyclopiazonic and mycophenolic acids by 1.7 and 2.6 times, respectively.
      PubDate: 2017-11-01
      DOI: 10.1134/s0003683817060151
      Issue No: Vol. 53, No. 6 (2017)
       
  • Chemical leaching of copper-zinc concentrate with ferric iron biosolution
    • Authors: N. V. Fomchenko; M. I. Muravyov
      Pages: 715 - 718
      Abstract: Abstract The process of leaching of copper-zinc concentrate with a solution containing biogenic iron, which is a product of the metabolism of iron-oxidizing microorganisms, was studied. The dependence of leaching rate of metals on temperature and pH was determined. It was shown that up to 98% of zinc and 70% of iron could be removed from the concentrate, while up to 7 and 4 g/L of zinc and copper, respectively, were accumulated in the liquid phase, which was sufficient for metal recovery. It was established that a copper concentrate with copper content up to 16% and only 0.5% of zinc could be obtained after chemical leaching for 340 min at 80°C.
      PubDate: 2017-11-01
      DOI: 10.1134/s0003683817060059
      Issue No: Vol. 53, No. 6 (2017)
       
  • Hydrogen peroxide-induced salt tolerance in the Arabidopsis
           salicylate-deficient transformants NahG
    • Authors: T. O. Yastreb; Yu. E. Kolupaev; A. A. Lugovaya; A. P. Dmitriev
      Pages: 719 - 724
      Abstract: Abstract The effect of hydrogen peroxide treatment on the salt tolerance of wild-type Arabidopsis thaliana L. plants (Col-0) and plants transformed with the bacterial salicylate hydroxylase gene (NahG) was studied. The base tolerance to salt stress caused by 200 mM of NaCl in solution culture was higher in plants with the NahG genotype in comparison with the wild-type plants. Growth inhibition was observed for wild-type plants under the action of exogenous hydrogen peroxide, which was not observed for the NahG transformants; salt tolerance increased in the both types of plants after treatment, which was assessed based on the growth indicators and the ability to preserve the chlorophyll pool following NaCl treatment. The content of endogenous Н2О2 in the leaves of wild-type plants increased significantly following exogenous hydrogen peroxide treatment and salt stress, while it practically did not change in the leaves of the NahG genotype. The SOD activity increased in both genotypes after treatment with exogenous hydrogen peroxide, and remained at an elevated level after salt stress in comparison with the nontreated plants. Furthermore, the catalase activity increased in leaves of the salicylate-deficient genotype but not in the Col-0 genotype. The guaiacol peroxidase activity increased in plants of both genotypes under the action of hydrogen peroxide and salt stress, with the NahG plants demonstrating a higher degree of increase. The Н2О2 treatment facilitated the increase of the proline content in leaves of the plants of both genotypes under conditions of salt stress. It was concluded that there were hydrogen peroxide signal transduction pathways in Arabidopsis plants that were salicylic acid independent and that the antioxidant system functioned more effectively in salicylate-deficient Arabidopsis plants.
      PubDate: 2017-11-01
      DOI: 10.1134/s000368381706014x
      Issue No: Vol. 53, No. 6 (2017)
       
  • Biosensor for the detection of bacteriophages based on a
           super-high-frequency resonator
    • Authors: O. I. Guliy; B. D. Zaitsev; A. V. Smirnov; O. A. Karavaeva; I. A. Borodina
      Pages: 725 - 732
      Abstract: Abstract Azospirillum lipoferum Sp59b microbial cells were immobilized on the surface of thin polystyrene films modified in plasma from a high-frequency discharge of argon (13.56 MHz). The optimal conditions for immobilization, under which cell activity was maintained with respect to specific bacteriophages, were established. It was shown that it is possible to record the interaction of immobilized microbial cells and bacteriophages with a microwave-based resonant system (5–8.5 GHz). It was found that the biosensor made it possible to distinguish the interaction of bacterial cells with specific bacteriophages from the control, in which such interaction was absent. With the obtained super-high-frequency sensor, it was possible to determine the content of ΦAl-Sp59b bacteriophages in a suspension containing ~106 phages/mL. The analysis time was about 10 min. The viability of microbial cells after immobilization was also determined with this sensor. The results obtained with the use of the sensor on the basis of a super-high-frequency resonator have shown that it is promising for the development of methods to determine viral particles and the viability of microbial cells.
      PubDate: 2017-11-01
      DOI: 10.1134/s0003683817060084
      Issue No: Vol. 53, No. 6 (2017)
       
  • Efficient expression of epidermal growth factor in Chlamydomonas
           reinhardtii CC400
    • Authors: Y. -P. Huang; F. Huang; C. Wang
      Pages: 513 - 517
      Abstract: Abstract The application of the green alga Chlamydomonas reinhardtii as a bioreactor is not adequate because of the difficulties caused by efficiency expressing foreign genes. To improve this efficiency a plasmid containing the epidermal growth factor (EGF) gene and a bleomycin resistance gene (ble) was constructed. We amplified the EGF gene according to the codon usage of C. reinhardtii. The vector carrying 2 expression cassettes for EGF gene and ble gene was constructed by adding rbc promoter and rbc terminator. Transformants, selected on Tris-acetate-phosphate medium containing 15 mg/L bleomycin, were screened by PCR and confirmed by Southern blotting, which showed that 3 transgenic C. reinhardtii cells contained only one copy of EGF gene integrated in different 3 sites of C. reinhardtii CC400 genome. Then EGF protein content of 3 transformants was determined by EGF precoated ELISA, indicating that EGF gene was first expressed, although at a low level, in algal cells. The presented study, as an example for expressing heterologous gene in green alga, provided feasibility to improve the efficiency of transformation of C. reinhardtii.
      PubDate: 2017-09-01
      DOI: 10.1134/s0003683817050052
      Issue No: Vol. 53, No. 5 (2017)
       
  • Influence of glutamate dehydrogenase activity on L-proline synthesis
    • Authors: S. K. Keleshyan; Zh. V. Karapetyan; A. Kh. Chakhalyan; N. A. Hovhannisyan; G. Ye. Avetisova; M. B. Chitchyan; G. G. Oganezova; M. A. Melkumyan; N. S. Avetisyan; L. H. Melkonyan
      Pages: 518 - 523
      Abstract: Abstract The influence of glutamate dehydrogenase activity on the production of L-proline in the producer strain Brevibacterium flavum AP111 was studied. Transformants of the Brevibacterium flavum strain AP111 were obtained with the use of a recombinant plasmid previously constructed by us, pVOG10. It includes the encoding sequence of the gdh gene, which is responsible for the synthesis of glutamate dehydrogenase. The production of L-proline in transformants was shown to have increased by more than 40%. The results can serve as the basis for the use of this approach to improve strains producing other amino acids of the glutamine family.
      PubDate: 2017-09-01
      DOI: 10.1134/s0003683817050064
      Issue No: Vol. 53, No. 5 (2017)
       
  • Degradation of perfluorooctanyl sulfonate by strain Pseudomonas
           plecoglossicida 2.4-D
    • Authors: S. P. Chetverikov; D. A. Sharipov; T. Yu. Korshunova; O. N. Loginov
      Pages: 533 - 538
      Abstract: Abstract A bacterial strain has been isolated from soil contaminated by waste from petrochemical production. Based on its cultural-morphological, physiological-biochemical properties and an analysis of the nucleotide sequence of the 16S rRNA gene and phylogenetic analysis data, the strain was defined as Pseudomonas plecoglossicida 2.4-D. The unique ability of this bacterium to use perfluorooctanyl sulfonate (PFOS) as the only source of carbon and energy is shown. When cultivated in a liquid medium, the strain completely utilizes this substance in 6 days. It is proved that P. plecoglossicida 2.4-D transforms PFOS to perfluoroheptanoic (perfluoroenanthic) acid, while free fluorine ions are released into the medium. Upon introduction into the soil, the strain was capable of PFOS degradation by 75%. The strain P. plecoglossicida 2.4-D is recommended for environmental protection. It can be used in the development of biotechnologies for the transformation (utilization) of fluoroorganic compounds.
      PubDate: 2017-09-01
      DOI: 10.1134/s0003683817050027
      Issue No: Vol. 53, No. 5 (2017)
       
  • The Participation of calcium ions and reactive oxygen species in the
           induction of antioxidant enzymes and heat resistance in plant cells by
           hydrogen sulfide donor
    • Authors: Yu. E. Kolupaev; E. N. Firsova; T. O. Yastreb; A. A. Lugovaya
      Pages: 573 - 579
      Abstract: Abstract The effect of hydrogen sulfide (H2S) donor sodium hydrosulfide (NaHS) on the heat resistance of wheat (Triticum aestivum L.) coleoptile cells, the formation of reactive oxygen species (ROS), and the activity of the antioxidant enzymes in them was investigated. The treatment of coleoptiles with 100 µM NaHS caused transient enhancement of the generation of the superoxide anion radical (O2 •) and an increased hydrogen peroxide content. The activities of antioxidant enzymes—superoxide dismutase, catalase, and guaiacol peroxidase— and coleoptile resistance to damaging heat was later found to have increased. The biochemical and physiological effects of the hydrogen sulfide donor described above were inhibited by the treatment of wheat coleoptiles with the hydrogen peroxide scavenger dimethylthiourea, the NADPH oxidase inhibitor imidazole, the extracellular calcium chelator EGTA, and the phosphatidylinositol-specific phospholipase C inhibitor neomycin. A conclusion was made on the role of ROS generation, which is dependent on the activity of NADPH oxidase and calcium homeostasis, in the transduction of the H2S signal, which induces antioxidant enzymes and the development of plant cell heat resistance.
      PubDate: 2017-09-01
      DOI: 10.1134/s0003683817050088
      Issue No: Vol. 53, No. 5 (2017)
       
  • The adjuvant effect of selenium nanoparticles, Triton X-114 detergent
           micelles, and lecithin liposomes for Escherichia coli antigens
    • Authors: K. P. Gabalov; M. V. Rumina; T. N. Tarasenko; O. S. Vidyagina; A. A. Volkov; S. A. Staroverov; O. I. Guliy
      Pages: 587 - 593
      Abstract: Abstract We studied the adjuvant properties of micelles from nonionogenic detergents, liposome, and selenium nanoparticles containing extracellular and intracellular vaccine antigens of a weakly virulent α-hemolytic Escherichia coli B-5 strain used for the immunization of experimental animals. Triton X-100 was used as a nonionogenic detergent for micelle preparation. The liposomes were obtained on the basis of lecithin from a chicken egg and E. coli B-5 membrane lipids. Native lipoproteins of E. coli B-5 cells and peptides for the proteolytic hydrolysis of toxin-containing culture liquid were used as antigens for micelles and liposomes. The obtained data suggested that micelles, liposomes, and selenium nanoparticles can be used for immunization with cellular and extracellular E. coli antigens.
      PubDate: 2017-09-01
      DOI: 10.1134/s0003683817050040
      Issue No: Vol. 53, No. 5 (2017)
       
  • Immunochromatographic assay of T-2 toxin using labeled anti-species
           antibodies
    • Authors: A. E. Urusov; A. V. Petrakova; A. V. Bartosh; M. K. Gubaydullina; A. V. Zherdev; B. B. Dzantiev
      Pages: 594 - 599
      Abstract: Abstract A new scheme of immunochromatographic assay was developed for the highly sensitive detection of low-molecular-weight analytes. This scheme includes the following two steps: the formation of complexes of free specific antibodies with an antigen and their detection by anti-species antibodies conjugated to gold nanoparticles as the label. This scheme was tested with mycotoxin T-2 toxin in maize extracts. The use of specific antibodies and a label as two individual components made it possible to independently vary their concentrations with a simultaneous decrease in the detection limit and an increase in the color intensity. The assay did not require additional reagents and manipulations. The instrumental and visual detection limits of the designed test system were 0.1 and 5.0 ng/mL, respectively (2 and 90 ng per gram of analytes), which are two orders of magnitude lower compared to conventional immunochromatography using the same reagents.
      PubDate: 2017-09-01
      DOI: 10.1134/s0003683817050167
      Issue No: Vol. 53, No. 5 (2017)
       
 
 
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