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  Subjects -> CHEMISTRY (Total: 846 journals)
    - ANALYTICAL CHEMISTRY (51 journals)
    - CHEMISTRY (596 journals)
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CHEMISTRY (596 journals)                  1 2 3 | Last

Showing 1 - 200 of 735 Journals sorted alphabetically
2D Materials     Hybrid Journal   (Followers: 10)
Accreditation and Quality Assurance: Journal for Quality, Comparability and Reliability in Chemical Measurement     Hybrid Journal   (Followers: 26)
ACS Catalysis     Full-text available via subscription   (Followers: 38)
ACS Chemical Neuroscience     Full-text available via subscription   (Followers: 18)
ACS Combinatorial Science     Full-text available via subscription   (Followers: 23)
ACS Macro Letters     Full-text available via subscription   (Followers: 24)
ACS Medicinal Chemistry Letters     Full-text available via subscription   (Followers: 39)
ACS Nano     Full-text available via subscription   (Followers: 251)
ACS Photonics     Full-text available via subscription   (Followers: 12)
ACS Synthetic Biology     Full-text available via subscription   (Followers: 23)
Acta Chemica Iasi     Open Access   (Followers: 2)
Acta Chimica Sinica     Full-text available via subscription   (Followers: 1)
Acta Chimica Slovaca     Open Access   (Followers: 1)
Acta Chimica Slovenica     Open Access  
Acta Chromatographica     Full-text available via subscription   (Followers: 9)
Acta Facultatis Medicae Naissensis     Open Access  
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (Followers: 5)
Acta Scientifica Naturalis     Open Access   (Followers: 2)
adhäsion KLEBEN & DICHTEN     Hybrid Journal   (Followers: 5)
Adhesion Adhesives & Sealants     Hybrid Journal   (Followers: 8)
Adsorption Science & Technology     Full-text available via subscription   (Followers: 5)
Advanced Functional Materials     Hybrid Journal   (Followers: 51)
Advanced Science Focus     Free   (Followers: 3)
Advances in Chemical Engineering and Science     Open Access   (Followers: 57)
Advances in Chemical Science     Open Access   (Followers: 13)
Advances in Chemistry     Open Access   (Followers: 15)
Advances in Colloid and Interface Science     Full-text available via subscription   (Followers: 18)
Advances in Drug Research     Full-text available via subscription   (Followers: 22)
Advances in Enzyme Research     Open Access   (Followers: 9)
Advances in Fluorine Science     Full-text available via subscription   (Followers: 8)
Advances in Fuel Cells     Full-text available via subscription   (Followers: 16)
Advances in Heterocyclic Chemistry     Full-text available via subscription   (Followers: 9)
Advances in Materials Physics and Chemistry     Open Access   (Followers: 21)
Advances in Nanoparticles     Open Access   (Followers: 15)
Advances in Organometallic Chemistry     Full-text available via subscription   (Followers: 15)
Advances in Polymer Science     Hybrid Journal   (Followers: 41)
Advances in Protein Chemistry     Full-text available via subscription   (Followers: 18)
Advances in Protein Chemistry and Structural Biology     Full-text available via subscription   (Followers: 20)
Advances in Quantum Chemistry     Full-text available via subscription   (Followers: 5)
Advances in Science and Technology     Full-text available via subscription   (Followers: 12)
African Journal of Bacteriology Research     Open Access  
African Journal of Chemical Education     Open Access   (Followers: 2)
African Journal of Pure and Applied Chemistry     Open Access   (Followers: 7)
Agrokémia és Talajtan     Full-text available via subscription   (Followers: 2)
Al-Kimia : Jurnal Penelitian Sains Kimia     Open Access  
Alkaloids: Chemical and Biological Perspectives     Full-text available via subscription   (Followers: 3)
AMB Express     Open Access   (Followers: 1)
Ambix     Hybrid Journal   (Followers: 3)
American Journal of Biochemistry and Biotechnology     Open Access   (Followers: 66)
American Journal of Biochemistry and Molecular Biology     Open Access   (Followers: 15)
American Journal of Chemistry     Open Access   (Followers: 27)
American Journal of Plant Physiology     Open Access   (Followers: 14)
American Mineralogist     Hybrid Journal   (Followers: 14)
Analyst     Full-text available via subscription   (Followers: 39)
Angewandte Chemie     Hybrid Journal   (Followers: 178)
Angewandte Chemie International Edition     Hybrid Journal   (Followers: 229)
Annales UMCS, Chemia     Open Access   (Followers: 1)
Annals of Clinical Chemistry and Laboratory Medicine     Open Access   (Followers: 4)
Annual Reports in Computational Chemistry     Full-text available via subscription   (Followers: 3)
Annual Reports Section A (Inorganic Chemistry)     Full-text available via subscription   (Followers: 4)
Annual Reports Section B (Organic Chemistry)     Full-text available via subscription   (Followers: 8)
Annual Review of Chemical and Biomolecular Engineering     Full-text available via subscription   (Followers: 12)
Annual Review of Food Science and Technology     Full-text available via subscription   (Followers: 16)
Anti-Infective Agents     Hybrid Journal   (Followers: 3)
Antiviral Chemistry and Chemotherapy     Hybrid Journal   (Followers: 1)
Applied Organometallic Chemistry     Hybrid Journal   (Followers: 7)
Applied Spectroscopy     Full-text available via subscription   (Followers: 22)
Applied Surface Science     Hybrid Journal   (Followers: 28)
Arabian Journal of Chemistry     Open Access   (Followers: 6)
ARKIVOC     Open Access   (Followers: 2)
Asian Journal of Biochemistry     Open Access   (Followers: 1)
Atomization and Sprays     Full-text available via subscription   (Followers: 4)
Australian Journal of Chemistry     Hybrid Journal   (Followers: 7)
Autophagy     Hybrid Journal   (Followers: 2)
Avances en Quimica     Open Access   (Followers: 1)
Biochemical Pharmacology     Hybrid Journal   (Followers: 10)
Biochemistry     Full-text available via subscription   (Followers: 323)
Biochemistry Insights     Open Access   (Followers: 6)
Biochemistry Research International     Open Access   (Followers: 6)
BioChip Journal     Hybrid Journal  
Bioinorganic Chemistry and Applications     Open Access   (Followers: 9)
Bioinspired Materials     Open Access   (Followers: 5)
Biointerface Research in Applied Chemistry     Open Access   (Followers: 2)
Biointerphases     Open Access   (Followers: 1)
Biology, Medicine, & Natural Product Chemistry     Open Access   (Followers: 1)
Biomacromolecules     Full-text available via subscription   (Followers: 19)
Biomass Conversion and Biorefinery     Partially Free   (Followers: 10)
Biomedical Chromatography     Hybrid Journal   (Followers: 6)
Biomolecular NMR Assignments     Hybrid Journal   (Followers: 3)
BioNanoScience     Partially Free   (Followers: 5)
Bioorganic & Medicinal Chemistry     Hybrid Journal   (Followers: 120)
Bioorganic & Medicinal Chemistry Letters     Hybrid Journal   (Followers: 84)
Bioorganic Chemistry     Hybrid Journal   (Followers: 10)
Biopolymers     Hybrid Journal   (Followers: 18)
Biosensors     Open Access   (Followers: 2)
Biotechnic and Histochemistry     Hybrid Journal   (Followers: 1)
Bitácora Digital     Open Access  
Boletin de la Sociedad Chilena de Quimica     Open Access  
Bulletin of the Chemical Society of Ethiopia     Open Access   (Followers: 2)
Bulletin of the Chemical Society of Japan     Full-text available via subscription   (Followers: 24)
Bulletin of the Korean Chemical Society     Hybrid Journal   (Followers: 1)
C - Journal of Carbon Research     Open Access   (Followers: 3)
Cakra Kimia (Indonesian E-Journal of Applied Chemistry)     Open Access  
Canadian Association of Radiologists Journal     Full-text available via subscription   (Followers: 3)
Canadian Journal of Chemistry     Hybrid Journal   (Followers: 10)
Canadian Mineralogist     Full-text available via subscription   (Followers: 5)
Carbohydrate Research     Hybrid Journal   (Followers: 26)
Carbon     Hybrid Journal   (Followers: 68)
Catalysis for Sustainable Energy     Open Access   (Followers: 7)
Catalysis Reviews: Science and Engineering     Hybrid Journal   (Followers: 8)
Catalysis Science and Technology     Free   (Followers: 7)
Catalysis Surveys from Asia     Hybrid Journal   (Followers: 3)
Catalysts     Open Access   (Followers: 8)
Cellulose     Hybrid Journal   (Followers: 7)
Cereal Chemistry     Full-text available via subscription   (Followers: 4)
ChemBioEng Reviews     Full-text available via subscription   (Followers: 1)
ChemCatChem     Hybrid Journal   (Followers: 8)
Chemical and Engineering News     Free   (Followers: 15)
Chemical Bulletin of Kazakh National University     Open Access  
Chemical Communications     Full-text available via subscription   (Followers: 70)
Chemical Engineering Research and Design     Hybrid Journal   (Followers: 25)
Chemical Research in Chinese Universities     Hybrid Journal   (Followers: 3)
Chemical Research in Toxicology     Full-text available via subscription   (Followers: 21)
Chemical Reviews     Full-text available via subscription   (Followers: 184)
Chemical Science     Open Access   (Followers: 22)
Chemical Technology     Open Access   (Followers: 16)
Chemical Vapor Deposition     Hybrid Journal   (Followers: 5)
Chemical Week     Full-text available via subscription   (Followers: 8)
Chemie in Unserer Zeit     Hybrid Journal   (Followers: 56)
Chemie-Ingenieur-Technik (Cit)     Hybrid Journal   (Followers: 24)
ChemInform     Hybrid Journal   (Followers: 8)
Chemistry & Biodiversity     Hybrid Journal   (Followers: 6)
Chemistry & Biology     Full-text available via subscription   (Followers: 30)
Chemistry & Industry     Hybrid Journal   (Followers: 5)
Chemistry - A European Journal     Hybrid Journal   (Followers: 146)
Chemistry - An Asian Journal     Hybrid Journal   (Followers: 15)
Chemistry and Materials Research     Open Access   (Followers: 20)
Chemistry Central Journal     Open Access   (Followers: 4)
Chemistry Education Research and Practice     Free   (Followers: 5)
Chemistry in Education     Open Access   (Followers: 9)
Chemistry International     Hybrid Journal   (Followers: 2)
Chemistry Letters     Full-text available via subscription   (Followers: 42)
Chemistry of Materials     Full-text available via subscription   (Followers: 249)
Chemistry of Natural Compounds     Hybrid Journal   (Followers: 9)
Chemistry World     Full-text available via subscription   (Followers: 22)
Chemistry-Didactics-Ecology-Metrology     Open Access   (Followers: 1)
ChemistryOpen     Open Access   (Followers: 2)
Chemkon - Chemie Konkret, Forum Fuer Unterricht Und Didaktik     Hybrid Journal  
Chemoecology     Hybrid Journal   (Followers: 4)
Chemometrics and Intelligent Laboratory Systems     Hybrid Journal   (Followers: 14)
Chemosensors     Open Access  
ChemPhysChem     Hybrid Journal   (Followers: 10)
ChemPlusChem     Hybrid Journal   (Followers: 2)
ChemTexts     Hybrid Journal  
CHIMIA International Journal for Chemistry     Full-text available via subscription   (Followers: 2)
Chinese Journal of Chemistry     Hybrid Journal   (Followers: 6)
Chinese Journal of Polymer Science     Hybrid Journal   (Followers: 10)
Chromatographia     Hybrid Journal   (Followers: 24)
Clay Minerals     Full-text available via subscription   (Followers: 10)
Cogent Chemistry     Open Access  
Colloid and Interface Science Communications     Open Access  
Colloid and Polymer Science     Hybrid Journal   (Followers: 10)
Colloids and Surfaces B: Biointerfaces     Hybrid Journal   (Followers: 6)
Combinatorial Chemistry & High Throughput Screening     Hybrid Journal   (Followers: 4)
Combustion Science and Technology     Hybrid Journal   (Followers: 19)
Comments on Inorganic Chemistry: A Journal of Critical Discussion of the Current Literature     Hybrid Journal   (Followers: 2)
Composite Interfaces     Hybrid Journal   (Followers: 6)
Comprehensive Chemical Kinetics     Full-text available via subscription   (Followers: 2)
Comptes Rendus Chimie     Full-text available via subscription  
Comptes Rendus Physique     Full-text available via subscription   (Followers: 1)
Computational and Theoretical Chemistry     Hybrid Journal   (Followers: 9)
Computational Biology and Chemistry     Hybrid Journal   (Followers: 11)
Computational Chemistry     Open Access   (Followers: 2)
Computers & Chemical Engineering     Hybrid Journal   (Followers: 9)
Coordination Chemistry Reviews     Full-text available via subscription   (Followers: 3)
Copernican Letters     Open Access   (Followers: 1)
Corrosion Series     Full-text available via subscription   (Followers: 6)
Critical Reviews in Biochemistry and Molecular Biology     Hybrid Journal   (Followers: 5)
Croatica Chemica Acta     Open Access  
Crystal Structure Theory and Applications     Open Access   (Followers: 4)
CrystEngComm     Full-text available via subscription   (Followers: 13)
Current Catalysis     Hybrid Journal   (Followers: 2)
Current Metabolomics     Hybrid Journal   (Followers: 5)
Current Opinion in Colloid & Interface Science     Hybrid Journal   (Followers: 9)
Current Opinion in Molecular Therapeutics     Full-text available via subscription   (Followers: 18)
Current Research in Chemistry     Open Access   (Followers: 8)
Current Science     Open Access   (Followers: 64)
Dalton Transactions     Full-text available via subscription   (Followers: 23)
Detection     Open Access   (Followers: 2)
Developments in Geochemistry     Full-text available via subscription   (Followers: 2)
Diamond and Related Materials     Hybrid Journal   (Followers: 12)
Dislocations in Solids     Full-text available via subscription  
Doklady Chemistry     Hybrid Journal  
Drying Technology: An International Journal     Hybrid Journal   (Followers: 4)
Eclética Química     Open Access   (Followers: 1)
Ecological Chemistry and Engineering S     Open Access   (Followers: 3)
Ecotoxicology and Environmental Contamination     Open Access  
Educación Química     Open Access   (Followers: 1)
Education for Chemical Engineers     Hybrid Journal   (Followers: 5)
EJNMMI Radiopharmacy and Chemistry     Open Access  

        1 2 3 | Last

Journal Cover Al-Kimia : Jurnal Penelitian Sains Kimia
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  This is an Open Access Journal Open Access journal
   ISSN (Print) 2302-2736 - ISSN (Online) 2549-9335
   Published by Universitas Islam Negeri Alauddin Makassar Homepage  [5 journals]
  • Pengaruh Surfaktan Biner Cetil Trimetil Amonium Bromida (CTAB)-
           Hexametilen Triamin (HMT) pada Pembentukan Perak Nanorods menggunakan
           Katalis Natrium Hidroksida

    • Authors: Atiek Rostika Noviyanti, Iwan Hastiawan, Akrajas Ali Umar, Diana Rakhmawaty Eddy, Gani Abdilah
      Pages: 1 - 11
      Abstract: Nanoparticles have different physical properties and more interesting than that of bulk material. Nanoparticles are highly preferred for applications in various technologies as a catalyst, the raw material of electronic components, and as an antimicrobial agent. The aim of the research is synthesize of silver nanorods.  The effect of a binary surfactant CTAB-HMT on the morphology and homogeneity were investigated using UV/Vis spectrophotometer, TEM, and XRD. Base on the UV/Vis spectra and TEM morphology, silver nanoparticles have two types, spherical and rods shapes.  The best product of nanorods was obtained  at the composition of CTAB 0.15 M : HMT 0.15 M. The structure of nanorods obtained were face center cubic (fcc).
      PubDate: 2017-06-30
      DOI: 10.24252/al-kimia.v5i1.2843
      Issue No: Vol. 5, No. 1 (2017)
       
  • Modifikasi Elektrode Glassy Carbon Dengan Nanopartikel Emas Dan
           Aplikasinya Untuk Mendeteksi Kromium(VI) Secara Voltammetri Pulsa
           Differensial

    • Authors: Santhy Wyantuti, Mahendra Permadi, Diana Hendrati, Yeni Wahyuni Hartati
      Pages: 12 - 20
      Abstract: Chromium(VI) is very toxic and has been classified as a carcinogen in humans breathing. Purpose of this experiment is to analyze chromium(VI ) in voltammetry using a glassy carbon electrode modified with gold nanoparticles. Voltammetry method is a method of measuring the current generated from a given potential to the working electrode so that the electrode can be widely modified work. The procedures were produce pencil graphite electrode that was coated by gold nanoparticles and measured chromium(VI) signal. From this study obtained a detection limit of 12.70 ppm and 99.99% precision measurement and measurement of 0.8 V deposition potential, deposition time  of 120 seconds and a scan rate of 0.01 V/s optimum.
      PubDate: 2017-06-30
      DOI: 10.24252/al-kimia.v5i1.2844
      Issue No: Vol. 5, No. 1 (2017)
       
  • Analisis Kualitas Briket Serbuk Gergaji Kayu Dengan Penambahan Tempurung
           Kelapa Sebagai Bahan Bakar Alternatif

    • Authors: Asri Saleh, Iin Novianty, Suci Murni, Andi Nurrahma
      Pages: 21 - 30
      Abstract: Increasing fuel and liquid gas prices make this energy source is no longer cheap. Therefore, it is necessary to create an alternative energy resource that can be used to replace the role of fuel and gas. Waste sawdust and coconut shell has a huge potential that can be used as raw material charcoal briquettes. The purpose of this research is to improve the quality of sawdust briquettes with the addition of coconut shell charcoal. To improve the quality of charcoal briquettes, the addition of coconut shell charcoal with a variation of 20%, 30%, 40%, 50% and 60% of the weight of sawdust briquette charcoal. Authoring process is done by burning coconut shells directly and roasting methods to sawdust. Adhesives are used as much as 50%. The calorific value generated in sawdust briquettes with materials: coconut shell at a concentration of 100% is 5622.7769 cal/gram, a concentration of 80: 20% is 6504.67785 cal/gram, the concentration of 70: 30% is 6624.09305 cal/gram, the concentration of 60: 40% is 7017.5178 cal/gram, a concentration of 50: 50% is 7288.7523 cal/gram and 40: 60% is 7386.4805 cal/gram. Overall, the quality of sawdust briquettes with palm shell charcoal is quite good, so it can be used as an alternative fuel
      PubDate: 2017-06-30
      DOI: 10.24252/al-kimia.v5i1.2845
      Issue No: Vol. 5, No. 1 (2017)
       
  • Photosenzitizer dari Fraksi Metanol: N-Heksana Buah Cabe Merah (Capsiccum
           Annum L.)

    • Authors: Muh Shiddiq Maming, Aisyah Aisyah, Suriani Suriani, Iswadi Iswadi
      Pages: 31 - 38
      Abstract: A research has been done on the dye components from the extract of red pepper (Capsiccum annum L) which is potentially used as photosensitizer. This study aims to determine the efficiency and the characteristics of the dye. The efficiency is measured on a cell made of glass ITO 100 Ω and a technical semiconductor TiO2. The pepper extract obtained from the ultrasonic maceration by methanol which then purified using a chromatography column using the ratio of 1: 4, 1: 1 and 4: 1 methanol:n-hexane. The results showed that the efficiency of the crude extract, fraction by ratio of 1:4; 1: 1 and 4: 1 are respectively 0.027%, 0.012%, 0.013% and 0.034%. Subsequently, the best efficiency fraction was characterized by using FTIR, UV-Vis and GC-MS. The wavelength of visible light obtained at 466 and 443 nm which is corresponds to the wavelength of carotene. The components indicate absorption  at 1631.78 cm-1, 3008.95 cm-1 and 2992 cm-1 that are characteristic of carotenoid whereas, that of 1739 cm-1 and 3446.79 cm-1  are carbonyl and hydroxyl group of xantofil. According to the GC-MS fragmentation pattern, the carotenoid compounds identified by mass abundace at 91 and 105.
      PubDate: 2017-06-30
      DOI: 10.24252/al-kimia.v5i1.2846
      Issue No: Vol. 5, No. 1 (2017)
       
  • Waktu Dan Suhu Optimum Dalam Produksi Asam Oksalat (H2c2o4) Dari Limbah
           HVS Dengan Metode Peleburan Alkali

    • Authors: Nurul Nurul, St. Chadijah, Kurnia Ramadani
      Pages: 39 - 47
      Abstract: Waste paper HVS can be used as raw material for the manufacture of oxalic acid containing 63 % cellulose. This study aims to determine the optimum time and temperature in the production of oxalic acid from waste paper with alkali fusion method. Oxalic acid can be made using an alkaline solution ( NaOH 40 % ) with multiple stages such as hydrolysis, filtration, precipitation with CaCl2, acidification with H2SO4 and efflorescence. The time variation used are 60, 70, 80 and 90 minutes. While the temperature variation used is 75oC, 90oC, 105oC and 120oC. From the research that has been done by using waste paper as much as 15 grams of HVS, the optimum time is on the 70th minute and the fusing temperature obtained by the temperature of 105oC. Weight of oxalic acid crystals obtained an average of 1.8043 g and yield of oxalic acid after permanganate test is obtained by 6.8537 %.
      PubDate: 2017-06-30
      DOI: 10.24252/al-kimia.v5i1.2847
      Issue No: Vol. 5, No. 1 (2017)
       
  • Uji Fitokimia Senyawa Metabolit Sekunder Dalam Ekstrak Metanol Bunga Turi
           Merah (Sesbania grandiflora L. Pers)

    • Authors: Anjar Purba Asmara
      Pages: 48 - 59
      Abstract: A beginning investigation about the presence of secondary metabolite compounds in the methanol extract of red grandiflora flower (Sesbania grandiflora L. Pers) has been conducted. The flower which traditionally used as antihyperglycemic therapy has been extracted through methanolic-maceration. The crude extract was phytochemically analyzed by qualitative approach with specific reagent for the each type of the compound. The analysis of functional group prediction is also performed by using FTIR spectrometer. Phytochemical test showed that it contains alkaloid, tannin, polyphenol, flavonoid, quinone, and triterpenoid. The IR spectrum showed that the typical functional group of the secondary metabolite consist of hydroxide (–OH), olefin (C=C), and aromatic which as constituents of phenolic group
      PubDate: 2017-06-29
      DOI: 10.24252/al-kimia.v5i1.2856
      Issue No: Vol. 5, No. 1 (2017)
       
  • Biorsopsi Ion Logam Zink (II) dalam Larutan Menggunakan Daun Kari (Murraya
           Koenigii)

    • Authors: Bhayu Gita Bhernama
      Pages: 60 - 70
      Abstract: Penyerapan ion logam Zn (II) menggunakan daun kari (murraya koenigii) telah dilakukan, Penelitian ini bertujuan untuk menentukan kadar ion logam Zn (II) yang dapat diserap oleh daun kari (murraya koenigii). Kemampuan daun kari untuk menyerap ion logam Zn (II) telah dievaluasi dengan variasi pH larutan, kosentrasi, ukuran partikel berat biomaterial. Kadar ion logam yang terserap diukur menggunakan spektrofotometer serapan atom (SSA). Hasil penelitian menunjukan kondisi optimum penyerapan ion logam Zn 9II) menggunakan daun kari dengan pH 5 kapasitas penyerapan 0,611 mg/g, ukuran partikel 150 µm kapasitas penyerapan 0,689 mg/g, konsentrasi 50 ppm dengan kapasitas penyerapan 0,443 mg/g dan berat material 0,5 g kapasitas penyerapan 1,505 mg/g. Berdasarkan persamaan isoterm Langmuir didapatkan kapasitas penyerapan maksimum Qmax -0,127. Hasil analisis FTIR memperlihatkan adanya gugus hidroksil yang dapat mengikat ion logam Zn (II).Kata kunci : logam berat Zn (II), penyerapan, daun kari
      PubDate: 2017-06-29
      DOI: 10.24252/al-kimia.v5i1.2539
      Issue No: Vol. 5, No. 1 (2017)
       
  • Isolasi Senyawa Bioaktif Antibakteri Pada Ekstrak Etanol Teripang Pasir
           (Holothuria scabra) di Kepulauan Selayar

    • Authors: Yuliana Yuliana, Asriani Ilyas, Suriani Suriani
      Pages: 71 - 80
      Abstract: Abstract: Sand sea cucumber (Holothuria scabra) is one type of marine invertebrates with family Holothuriidae and is a member of Enchinodermata animals. Types of animals have been used as raw  materials in traditional medicine. The aims of this reseach are to isolate the bioactive compounds contained in the ethanol extract of sand sea cucumbers and to know its major bioactivity. This research conducted in several methods namely extraction, fractionation, identification using thin layer chromatography (TLC) and qualitative test to determine secondary metabolites, as well as the characterization by FTIR. Results obtained from the isolation is a pure isolate by weight of 0.0203 grams of yellowish white paste. Purification was performed using three systems eluent as well as FTIR spectroscopy. The results showed that the compounds in pure isolates are alkaloids. Viscous extract and pure isolates subsequently tested its antibacterial test disc diffusion method using bacteria Salmonella thypi and Staphylococcus aureus. The results showed that the extract activity of the bacteria Salmonella thypi and Staphylococcus aureus into the strong category with optimum diameter of clear zone respectively 11.50 mm and 12.30 mm. Keyword: Bioaktive Compound, Disc Diffusion, Isolation, Sand Sea Cucumber (Holothuria scabra).
      PubDate: 2017-06-29
      DOI: 10.24252/al-kimia.v5i1.2340
      Issue No: Vol. 5, No. 1 (2017)
       
  • Sintesis Membran Silika Kitosan Dari Abu Ampas Tebu (Bagasse)

    • Authors: Sjamsiah Sjamsiah, Kurnia Ramadani, Hermawan Hermawan
      Pages: 81 - 88
      Abstract: Membrane is a polymer layer that can be used in the process adsorbsi metal ions. Membrane can be synthesized from silica dust bagasse that termodifikasi kitosan. The purpose of this research is to know the impact of the addition of a variety of silicate on the characteristics of the membrane silika-kitosan the bagasse to the adsorpsi metal ions Pb. The content of silica in the bagasse to 73, 80 %. Membrane kitosan-silika be made with different variations of the composition of which is 1 : 1 ; 1 : 1, 5 ; 1 : 2 ; 1 : 2, 5 and 1 : 3 and the ability of the adsorpsi the metal Pb in a row of 41 %, 43, 76 %, 54, 88 %, 38, 36 % and 39, 6 %.. The application of membrane to the process adsorpsi metal ions Pb by membrane said with a ratio of 1 : 2 to concentrate Pb the beginning of the 50 parts per million. The use of membrane to the process readsorpsi to do with how to choose a membrane that has the adsorpsi of the membrane with a ratio of 1:2 be able to absorb metal Pb of 1 ppm. Membrane that has been used can be used with traffic readsorpsi, 2 % in the membrane of every 1 : 2.
      PubDate: 2017-06-29
      DOI: 10.24252/al-kimia.v5i1.2857
      Issue No: Vol. 5, No. 1 (2017)
       
  • Pemanfaatan Limbah Cangkang Kerang Hijau (Perna Viridis) Menjadi Kitin
           Sebagai Biokoagulan Air Sungai

    • Authors: Syamsidar HS, Ramayana Ramayana, Kurnia Ramadani
      Pages: 89 - 99
      Abstract: This study aims to determine the optimum weight of chitin that used as biocoagulant of river water. The water sample is taken from Kajenjeng river and the chitin used for research are isolated from green mussels (Perna viridis) shell powder through three steps such as deproteination by NaOH 3%, demineralization by HCl 1,25 N and depigmentation by NaOCl 4%. Then, the obtained chitin are contacted into water with variation of 0,25 gram; 0,5 gram; 0,75 gram and 1 gram in an hour. The result showed that optimum weight of chitin for COD determination, total hardness, calcium and turbidity is 0,75 gram, while optimum weight of chitin for magnesium determination is 0,5 gram.
      PubDate: 2017-06-29
      DOI: 10.24252/al-kimia.v5i1.2859
      Issue No: Vol. 5, No. 1 (2017)
       
 
 
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