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"Jurnal Kimia VALENSI Volume 1, No. 1, Mei 2015"
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<![CDATA[Bioaktivitas Turunan Metil Sinamat Terhadap Pertumbuhan Bakteri Escherichia coli, Staphylococcus aureus, Bacillus subtilis, Pseudomonas aureugenosa dan Jamur Candida albicans ]]>
<![CDATA[Andri Budiana]]>;
<![CDATA[Teni Ernawati]]>
<![CDATA[ Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 1, No. 1, Mei 2015 ]]>
Publisher : <![CDATA[Syarif Hidayatullah State Islamic University ]]>
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DOI: 10.15408/jkv.v0i0.3154
<![CDATA[Methyl cinnamic is a compound isolated from Alpinia malaccensis included in the family Zingiberaceae. A. malaccensis in Indonesia known as galangal forest. Some studies inform that ginger has anti-bacterial and pharmacologically galangal act as an antifungal. In this study the bioactivity of the compound methyl cinnamate and methyl cinnamic derivative which results cinnamic methyl esterification compound on the growth of Escherichia coli, Staphylococcus aureus, Bacillus subtilis, Pseudomonas aureugenosa and fungus Candida albicans. Methyl cinnamic derivative compounds tested are; cinnamic acid, cinnamic ethyl, butyl and 2-butyl cinnamic cinnamic. Anti-microbial test results showed that of the samples tested, cinnamic acid is able to inhibit microbial growth of S. aureus, B. subtilis, E. coli and P. aureugenosa and fungi C.albicans.DOI :http://dx.doi.org/10.15408/jkv.v0i0.3176 ]]>
<![CDATA[Fat Reduction in Improving the Quality of Chicken Feet Gelatine for Functional Food Application ]]>
<![CDATA[Hakiki Melanie]]>;
<![CDATA[Agustin Susilowati]]>;
<![CDATA[Jeti M Iskandar]]>;
<![CDATA[Meilita Laelatunur]]>
<![CDATA[ Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 1, No. 1, Mei 2015 ]]>
Publisher : <![CDATA[Syarif Hidayatullah State Islamic University ]]>
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DOI: 10.15408/jkv.v0i0.3149
<![CDATA[Fat reduction has been performed on crude gelatin extracted from chicken feet (shank) through curing process using sodium hydroxide and acetic acid in various proportions. This study was conducted to evaluate the best fat reduction condition by the addition of acetic acid at concentrations of 0, 2.5 and 5% (v/v) with decantation time 0, 6 and 12 hours on crude gelatine from curing process at a ratio of 1% acetic acid; 1% acetic acid with 1% NaOH; 1% acetic acid and 3% NaOH and without curing (initial gelatine). The analysis was carried out to determine the composition of gelatin and their byproducts to total solids, total fat and fat binding capacity. The results showed that the variation in the ratio of the addition of acetic acid and decantation time affect the composition of fat and fat-binding ability. Based on fat binding capacity (FBC), treatment of chicken feet gelatin with curing of 1% acetic acid and 3% NaOH and continued by the addition of 5% (v/v) acetic acid with a 12-hour decantation time resulted in gelatin with the best FBC of 7.4 g/g, fat content 1.0248% and total solids 2.7575%.DOI : http://dx.doi.org/10.15408/jkv.v0i0.3149]]>
<![CDATA[Stigmast-5(6)-en-3(6)-ol dari Herba Tumbuhan Krokot (Lygodium microphyllum) ]]>
<![CDATA[Hadi Kuncoro]]>;
<![CDATA[Kindi Farabi]]>;
<![CDATA[Euis Julaeha]]>;
<![CDATA[Laode Rijai]]>;
<![CDATA[Unang Supratman]]>
<![CDATA[ Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 1, No. 1, Mei 2015 ]]>
Publisher : <![CDATA[Syarif Hidayatullah State Islamic University ]]>
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DOI: 10.15408/jkv.v0i0.3152
<![CDATA[A steroid, stigma-5(6)-en-3β-ol or β-sitosterol (1) had been isolated from a n-hexane extract of the Krokot plant herb (Lygodium microphyllum). The chemical structure of 1 was identified on the basis of spectroscopic evidences and by comparison with those of spectra data previously reported. The investigation of steroid, stigma-5(6)-en-3β-ol was from L. microphyllum plant was reported inthis research for first time.DOI :http://dx.doi.org/10.15408/jkv.v0i0.3152]]>
<![CDATA[Aplikasi Metode SDS-PAGE (Sodium Dodecyl Sulphate Poly Acrylamide Gel Electrophoresis) untuk Mengidentifikasi Sumber Asal Gelatin pada Kapsul Keras ]]>
<![CDATA[Sandra Hermanto]]>;
<![CDATA[Fahrur Rahman Saputra]]>;
<![CDATA[Zilhadia .]]>
<![CDATA[ Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 1, No. 1, Mei 2015 ]]>
Publisher : <![CDATA[Syarif Hidayatullah State Islamic University ]]>
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DOI: 10.15408/jkv.v0i0.3150
<![CDATA[Gelatin as the main ingredient of capsules is still a problem for a moslem. Most of gelatin production remains largely derived from non-halal materials. One of gelatin source is came from collagen of the skin and bones of bovine or pork. The main of study is determine the source of gelatin used in hard capsules by using SDS-PAGE (Sodium Dodecyl Sulphate Gel electrophoresis Poly Acrylamide) method. In the early stages, optimization of standards bovine and pork gelatin were hydrolyzed by pepsin at pH 4.5 and 60°C for 1 hour, 2 hours, and 3 hours. Gelatin hydrolyzateswere analyzed by SDS-PAGE to determine the optimal hydrolysis time. Identification of gelatin hydrolyzate fragments were carried by molecular weight. Hydrolysis time optimization throught applied to identify the source of hard gelatin capsules in the samples obtained from market and compared with the simulation of hard gelatin capsules. The results showed there were of specific bands of bovine gelatin with a molecular weight of 11,4 kDa; 34 kDa; 47kDa and specific bands of pork gelatin with a molecular weight of 24.7 kDa; 28 kDa; and 60 kDa. Similar results were obtained on a sample of hard capsules with bands of protein fragments that were identical to bovine gelatinstandard. Based on the results,each of the samples were tested contain of bovine gelatin respectively. DOI :http://dx.doi.org/10.15408/jkv.v0i0.3150]]>
<![CDATA[Penggunaan Kitosan sebagai Koagulan Alami dalam Perbaikan Kualitas Air Danau ]]>
<![CDATA[Hendrawati Hendrawati]]>;
<![CDATA[Susi Sumarni]]>;
<![CDATA[. Nurhasni]]>
<![CDATA[ Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 1, No. 1, Mei 2015 ]]>
Publisher : <![CDATA[Syarif Hidayatullah State Islamic University ]]>
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DOI: 10.15408/jkv.v0i0.3148
<![CDATA[Treatment of groundwater and surface water is still dirty often done using synthetic coagulant poly aluminum Cloride (PAC). In fact, its use may pose a risk to health and more expensive. This study was conducted to see the effect of chitosan from shrimp shell waste as a natural coagulant coagulant synthetic substitute. Chitosan at a concentration of 20 ppm lower the lake water turbidity of 94.43%, lowering the pH, decreases the amount of bacteria ± 99.18%. Lower levels of dissolved metals in the water of the lake, such as manganese, magnesium and iron. Chitosan does not change tempeatur lake water and water treatment results. Chitosan not lower BOD value and not lower levels of calcium. DOI :http://dx.doi.org/10.15408/jkv.v0i0.3148]]>
<![CDATA[Kuersetin dan Kuersetin-3-O-Glukosida dari Kulit Batang Sonneratia Alba (Lythraceae) ]]>
<![CDATA[. Horizon]]>;
<![CDATA[Betry Pujiastuti]]>;
<![CDATA[Dikdik Kurnia]]>;
<![CDATA[Dadan Sumiarsa]]>;
<![CDATA[Unang Supratman]]>;
<![CDATA[Yoshihito Shiono]]>
<![CDATA[ Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 1, No. 1, Mei 2015 ]]>
Publisher : <![CDATA[Syarif Hidayatullah State Islamic University ]]>
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DOI: 10.15408/jkv.v0i0.3151
<![CDATA[Two flavonoid compounds, quercetin (1) and quercetin-3-O-glucoside (2) have been isolated from the bark of Sonneratia alba (Lythraceae). Chemical structure of both compounds were determined on the basis of spectroscopic data and comparison with those spectra data previously reported. Compound 1 and 2 exhibited antibacterial activity against Gram-positive bacteria, Staphylococcus aureus and Streptococcus mutans with MIC values of 51.2; 48.8; 72.5; dan 100.7 µg/mL respectively.DOI :http://dx.doi.org/10.15408/jkv.v0i0.3151]]>
<![CDATA[Screening Fitokimia dan Aktivitas Antioksidan Daun Eceng Gondok (Eichhornia crassipes) ]]>
<![CDATA[Dianty Wijaya]]>;
<![CDATA[Putri Purnama Yanti]]>;
<![CDATA[Rafty Setya A]]>;
<![CDATA[Muhammad Rizal]]>;
<![CDATA[Rafty Setya A]]>
<![CDATA[ Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 1, No. 1, Mei 2015 ]]>
Publisher : <![CDATA[Syarif Hidayatullah State Islamic University ]]>
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DOI: 10.15408/jkv.v0i0.4965
<![CDATA[Tanaman eceng gondok (Eichhornia crassipes) merupakan tumbuhan yang mengambang di permukaan air (gulma), dan mudah untuk terus bertumbuh. Bahkan dapat merugikan bagi lingkungan jika telah meluas. Maka dari itu dilakukan berbagai pengujian untuk mengetahui potensi-potensi metabolit sekundernya. Hasil Uji fitokimia pada daun eceng gondok mengindikasikan adanya steroid, tannin dan flavonoid. Dengan pengujian antioksidannya, diperoleh nilai IC50 yaitu sebesar 232,34 ppm. Hasil kromatografi lapis tipis menunjukkan bahwa eluen aseton – n-heksana (7:5) adalah yang paling baik dalam pemisahannya. Setelahnya fraksinasi dengan bantuan KOH pada ekstrak tanaman hasil maserasi dengan aseton, menunjukkan adanya kandungan steroid. Setelahnya di uji kolom dan didapati 2 fraksi yang berbeda. Fraksi A mengandung steroid. Sesuai dengan uji KLT dengan bantuan sinar UV.DOI :http://dx.doi.org/10.15408/jkv.v0i0.4965 ]]>
<![CDATA[Pengembangan Metode DGT (Diffusive Gradient In Thin Film) dengan Binding Gel Fe-Al-Oksida dan Pengikat Silang N,N’-Methylenebisacrylamide untuk Penyerapan Fosfat dalam Air ]]>
<![CDATA[Asep Saefumullah]]>;
<![CDATA[Ratsania Rahmaniati H]]>
<![CDATA[ Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 1, No. 1, Mei 2015 ]]>
Publisher : <![CDATA[Syarif Hidayatullah State Islamic University ]]>
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DOI: 10.15408/jkv.v0i0.3597
<![CDATA[High concentration of phosphates in the water can lead to eutrophication which leads to uncontrolled growth of algae (algae blooming). It underlies the need for determining the concentration of phosphate in the aquatic environment. However, the concentration of phosphate may change during storage of samples so that an accurate analysis difficult to achieve unless carried out in-situ. DGT (Diffusive Gradient in Thin Films) is an in-situ measurement method developed for measuring phosphate and metal. In this study the use of Fe-Al-Oxide as a binding gel that is expected to bind phosphate with a capacity greater than ferrihydrite. N, N'-methylenebisacrylamide is used as a substitute for commercial DGT Crosslinker as crosslinking for a cheaper price and selective for small molecule. Ferrihydrite-DGT and Fe-Al-Oxide-DGT are tested with a variety of concentrations, pH, and contact time. In both methods DGT found that the pH for phosphate measurements performed at pH 3. Capacity of Fe-Al-Oxide binding gel known to be higher than the ferrihydrite binding gel with result Cferrihydrite-DGT:Cstart is 76% and CFe-Al-Oxide-DGT:Cstart is 82%.DOI :http://dx.doi.org/10.15408/jkv.v0i0.3597]]>
<![CDATA[Karakterisasi Fraksi Aktif Antioksidan dari Ekstrak Etanol Biji Kemangi (Ocimum Basilicum L.) ]]>
<![CDATA[Dede Sukandar]]>;
<![CDATA[Sandra Hermanto]]>;
<![CDATA[Eka Rizki Amelia]]>;
<![CDATA[Chitta Putri Novianti]]>
<![CDATA[ Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 1, No. 1, Mei 2015 ]]>
Publisher : <![CDATA[Syarif Hidayatullah State Islamic University ]]>
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DOI: 10.15408/jkv.v0i0.3598
<![CDATA[Characterization of antioxidant compounds from the seeds of basil (Ocimum basilicum L.) has been done. Extraction is done by maceration method using ethanol solvent, fractionation by TLC and column chromatography, antioxidants test using DPPH method, and characterization of antioxidant compound using GCMS. Ethanol extract and results of fractionation ethanol extract of basil seeds using n-hexane, ethyl acetate, n-butanol and methanol-water extracts show that n-butanol extract has the highest antioxidant activity with IC50 values of 41.90 ppm. Results of column chromatography n-butanol extract using n-hexane : ethyl acetate (1:9) as mobile phase yielded 5 fractions with fraction 4 (F4 isolate) has dominant stain of active antioxidants after being sprayed DPPH reagent, it had IC50 values of 39,70 ppm and total phenolic content of 0,003 mg/g. Isolate F4 suspected contains two active compounds as antioxidant which is terpenoid and phenolic compound group, namely squalene and 1,4-di-tert-buthyl-phenol identified by GCMS.DOI :http://dx.doi.org/10.15408/jkv.v0i0.3598]]>
<![CDATA[Biosorpsi Ni2+ oleh Nannochloropsis Salina pada Medium Terpapar Ca2+ ]]>
<![CDATA[Yusafir Hala]]>;
<![CDATA[Muhammad Zakir]]>;
<![CDATA[Emma Suryati]]>;
<![CDATA[Karuniawati Azis]]>
<![CDATA[ Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 1, No. 1, Mei 2015 ]]>
Publisher : <![CDATA[Syarif Hidayatullah State Islamic University ]]>
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DOI: 10.15408/jkv.v0i0.3153
<![CDATA[Research on biosorption of Ni2+ by N. salina in Ca2+ exposed medium has been done. This study aimed to determine the growth and efficiency of N. salina towards Ni2+ in Conwy Medium with addition of Ca2+. Exposure of mixed ions of Ni2+ 5 ppm and Ca2+ with variation of concentrations 10, 30, 50 ppm was conducted at the beginning of the growth of N. salina. The growth of N. salina was observed every day by counting the number of N. salina population using a microscope and haemocytometer. The concentration of metal ions after the exposure was determined by atomic absorption spectrophotometer. The growth of N. salina in medium with exposed metal ions is lower than the control. The maximum sorption efficiency of Ni2+ as a single ion is 55.2%. After exposure of mixed ions of Ni2+ and Ca2+ with variation of concentrations 10, 30, 50 ppm, the sorption efficiency of Ni2+ in sequents are 17.6%; 17.8%; and 19.6%; while the maximum sorption efficiency of N. salina towards Ca2+ are 5.1%; 7.1%; and 4.0% respectively.DOI :http://dx.doi.org/10.15408/jkv.v0i0.3153 ]]>
