Jurnal Kimia Terapan Indonesia最新文献

Magnetic Nanoparticles based on Natural Silica as a Methyl Ester Forming Acid Catalyst 基于天然二氧化硅的磁性纳米颗粒作为甲酯形成酸催化剂

Jurnal Kimia Terapan Indonesia Pub Date : 2021-11-09 DOI: 10.14203/inajac.v23i2.473

Falah Azizah Elmaria, S. N. A. Jenie

{"title":"Magnetic Nanoparticles based on Natural Silica as a Methyl Ester Forming Acid Catalyst","authors":"Falah Azizah Elmaria, S. N. A. Jenie","doi":"10.14203/inajac.v23i2.473","DOIUrl":"https://doi.org/10.14203/inajac.v23i2.473","url":null,"abstract":"Natural silica has advantages in various fields such as catalysts, because it is easily obtained and applied in the chemical reaction process. The synthesis of natural silica-based magnetic acid catalyst, MSNP/SO42- aims to obtain a large yield from the reaction process between oleic acid and methanol to form methyl ester. Natural silica obtained from geothermal waste was washed with distilled water, then sol gel method was applied at pH of 4-6 to obtain SiO2 nanoparticles. FeCl3 was added to achieve the magnetic properties, and the cetyl trimethyl ammonium bromide (CTAB) is varied in order to attain optimal mesoporous size. Brunauer emmet teller (BET) results showed optimum results from 1: 2 molarity ratio between silica and CTAB with a surface area of 520.94 m2/g. The acidic properties were obtained by immersion using H2SO4 0.5 M. The catalyst were tested for the acidic and magnetic properties using temperature programmed desorption ammonia (TPD-NH3) and vibrating sample magnetometer (VSM) characterization resulting intotal acidity of 0.2488 mmol/g and. softmagnetic type, respectively. The BET surface area of the sulfate modified into MSNP/SO42-, was decreased by 114.44 m2/g. Application of MSNP/SO42- as a catalyst for forming methyl esters obtained a percentage of 85.41% yield based on the gas chromatography mass spectrometry (GC- MS) results.","PeriodicalId":17694,"journal":{"name":"Jurnal Kimia Terapan Indonesia","volume":"231 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74027945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Study of Total Phenolic, Total Flavonoid, Scopoletin Contents and Antioxidant Activity of Extract of Ripened Noni Juice 诺丽汁成熟提取物总酚、总黄酮、东莨菪碱含量及抗氧化活性研究

Jurnal Kimia Terapan Indonesia Pub Date : 2021-11-09 DOI: 10.14203/inajac.v23i2.480

Lia Meilawati, T. Ernawati, R. Dewi, M. Megawati, S. Sukirno

引用次数: 7

Bacterial Cellulose Production in The Overripe Guava Juice by Acetobacter xylinum as A Solution to Reduce Organic Waste 木醋杆菌在过熟番石榴汁中生产细菌纤维素以减少有机废物

Jurnal Kimia Terapan Indonesia Pub Date : 2021-11-09 DOI: 10.14203/inajac.v23i2.493

A. N. Lathifah, I. Nuryana

{"title":"Bacterial Cellulose Production in The Overripe Guava Juice by Acetobacter xylinum as A Solution to Reduce Organic Waste","authors":"A. N. Lathifah, I. Nuryana","doi":"10.14203/inajac.v23i2.493","DOIUrl":"https://doi.org/10.14203/inajac.v23i2.493","url":null,"abstract":"The exploration for a new cost-effective carbon source with shorter fermentation process for high yield BC production is still needed. In this study, bacterial cellulose (BC) was synthesized by Acetobacter xylinum using overripe guava juice as a carbon source. The results showed that A. xylinum was able to grow on the overripe guava juice with different concentration and produced BC after two days incubation. In the later on, the BC is called as nata de guava. The overripe guava juice which containing reducing sugar content 23 g /L (substrate 100%) at pH 4 produced the thickest BC (1.267 cm). This study showed due to the high reducing sugar and protein contents in the overripe guava, without the addition of carbon and nitrogen from external sources, BC could be formed. Considering the huge disposal overripe guava fruit waste in Java, the present study provides an alternative methodology to synthesize BC. Besides, most importantly, this study provides a new insight to manage organic waste specifically from overripe guava fruit rather than the waste being thrown away and becoming organic waste generation. Keywords: bacterial cellulose, Acetobacter xylinum, overripe guava, organic waste","PeriodicalId":17694,"journal":{"name":"Jurnal Kimia Terapan Indonesia","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84496790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison of real time PCR and conventional PCR by identifying genomic DNA of bovine and porcine 牛、猪基因组DNA实时PCR与传统PCR的比较

Jurnal Kimia Terapan Indonesia Pub Date : 2021-11-09 DOI: 10.14203/inajac.v23i2.491

M. A. Munir, A. Inayatullah

{"title":"Comparison of real time PCR and conventional PCR by identifying genomic DNA of bovine and porcine","authors":"M. A. Munir, A. Inayatullah","doi":"10.14203/inajac.v23i2.491","DOIUrl":"https://doi.org/10.14203/inajac.v23i2.491","url":null,"abstract":"Bovine and porcine are poultry meat that consumed worldwide particularly in Southeast Asia.Both of them are prone to food counterfeit owing to several factors such as price, appetite and Halal status. Sensitive and selective analytical methods are required to control meat products that distributed to markets. This paper studied the sensitivity between real – time and conventional PCR or known as qPCR and cPCR, respectively. Bovine and porcine were samples used to verify the sensitivity of them. Nevertheless, those instruments did not show a specific difference during DNA analysis of bovine and porcine. In conventional PCR, two pairs of DNA primers targeted cytochrome b (Cyt b) was analyzed, resulting of 120 and 131 amplicons, respectively. While qPCR applied to analyze porcine and bovine DNA. The detection limit of qPCR after porcine and bovine analysis were at 0.004 and 0.007 µg/µL, respectively. Results demonstrated the qPCR was reliable for verifying porcine and bovine DNA compared to conventional PCR. Furthermore, the study concluded that the developed assay can be easily employed for the identification of porcine and bovine tissue in food products in low resource areas.","PeriodicalId":17694,"journal":{"name":"Jurnal Kimia Terapan Indonesia","volume":"252 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75851693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Antioxidant and antidiabetes activity from the fruit shell of Calophyllum inophyllum Calophyllum inophyllum果壳的抗氧化和抗糖尿病活性

Jurnal Kimia Terapan Indonesia Pub Date : 2021-11-09 DOI: 10.14203/inajac.v23i2.508

J. Abbas, M. Minarti, N. Artanti

引用次数: 0

Phenol Biodegradation and Catechol 2,3-Dioxygenase Gene Sequencing of Bacillus cereus IrC2 isolated from Rungkut Indonesia 印尼龙库特蜡样芽孢杆菌IrC2株苯酚生物降解及邻苯二酚2,3-双加氧酶基因测序

Jurnal Kimia Terapan Indonesia Pub Date : 2019-06-27 DOI: 10.14203/JKTI.V21I1.415

C. Tahya, Wahyu Irawati, F. Purba

{"title":"Phenol Biodegradation and Catechol 2,3-Dioxygenase Gene Sequencing of Bacillus cereus IrC2 isolated from Rungkut Indonesia","authors":"C. Tahya, Wahyu Irawati, F. Purba","doi":"10.14203/JKTI.V21I1.415","DOIUrl":"https://doi.org/10.14203/JKTI.V21I1.415","url":null,"abstract":"Phenol is toxic organic compounds that harmful to humans, mammals, and disrupt the aquatic environment, especially higher-organisms in fresh-water environment. The biodegradation method using bacteria to degrade hazardous chemical and detoxify wastewater is an effective and efficient method. Bacillus cereus IrC2 isolated from sludge in an industrial wastewater treatment plant in Rungkut – East Java, Indonesia has been examined for the ability to degrade phenols in minimal salt medium. Bacillus cereus IrC2 is Gram-positive bacterium. This bacterium is motile, rod-shaped and its nucleotides sequence of 16S rRNA gene has been sequenced and can be accessed in GenBank with accession number MK511840. Bacillus cereus IrC2 is capable to use phenol up to 400 ppm as the sole carbon source to grow for 48 hours incubation. Phenol degrades 96% from initial concentration. Degradation of phenol was calculated by colorimetric method using 4-aminoantipyrine reagent and confirmed by GC MS analysis. The aerobic degradation of phenol pathways consists of three steps; in the first step, two hydroxyl groups are inserted into aromatic ring and catalyzed by mono or dioxygenase to produce dihydroxy aromatic compounds which are mostly catechols. Catechol enters the next step of aromatic ring cleavage catalyzed by catechol 1,2-dioxygenase and/or catechol 2,3- dioxygenase. The catechol 2,3-dioxygenase gene of Bacillus cereus IrC2 has been amplified by PCR and cloned into pTA2 vector. The cloned plasmid (pTA2-catE) was transformed into E. coli DH5α and selected blue-white colonies. The insert sequence was determined by Sanger deoxy sequencing method. The catechol 2,3-dioxygenase gene nucleotides sequence of Bacillus cereus IrC2 was submitted nto GenBank with accession number MK561609.","PeriodicalId":17694,"journal":{"name":"Jurnal Kimia Terapan Indonesia","volume":"96 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83935113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Characterization of Protease Crude Extract from Indigenous Lactic Acid Bacteria and the Protein Degradation Capacity in Local Tuber and Cereal Paste Flour 本地乳酸菌蛋白酶粗提物及其对块茎和谷物糊粉蛋白质降解能力的研究

Jurnal Kimia Terapan Indonesia Pub Date : 2019-06-27 DOI: 10.14203/JKTI.V21I1.419

T. Khusniati, Nanda Sabbaha Nur Kasfillah, Vilya Syafriana, Resti Sofia Zahara, P. Citroreksoko, Sulistiani Sulistiani, T. Anindyawati

{"title":"Characterization of Protease Crude Extract from Indigenous Lactic Acid Bacteria and the Protein Degradation Capacity in Local Tuber and Cereal Paste Flour","authors":"T. Khusniati, Nanda Sabbaha Nur Kasfillah, Vilya Syafriana, Resti Sofia Zahara, P. Citroreksoko, Sulistiani Sulistiani, T. Anindyawati","doi":"10.14203/JKTI.V21I1.419","DOIUrl":"https://doi.org/10.14203/JKTI.V21I1.419","url":null,"abstract":"Protease hidrolyzed protein in flour in order to more digest by human ulcer. Lactobacillus plantarum B110 and Lactobacillus satsumensis are indigenous lactic acid bacteria that produce protease. The objective of this research is to characterization of protease crude extract from indigenous lactic acid bacteria and the protein degradation capacity in local tuber and cereal paste flour. Tuber and cereal flour used were purple sweet potato (Dioscorea alata), cassava (Manihot esculenta), rice (Oryza sativa), corn (Zea mays) and wheat (Triticum) as comparison. Proteaseactivity was tested by Horikoshi method (1971) and protein degradation was by formol titration. Research results showed that optimum activities and stabilities of Lactobacillus plantarum B110 were at pH: 7.5, 45oC and pH:5.0-8.0, 35-50oC, while that L. satsumensis EN 38-32 were at pH: 7.0, 40oC and pH:6.0-8.0, 20-45oC. Increases in protein degradation capacity of the paste flour additional proteases crude extract from L. plantarum B110 were 0.0838% (purple sweat potato), 1.3299% (cassava), 0.5834% (corn), 0.7499% (rice) and 1.5551% (wheat as comparison); while that L. satsumensis EN 38-32 were 0.20% (purple sweet potato), 0.32% (cassava), 0.87% (corn), 1.17% (rice). Based on increases in protein degradation capacity, protease crude extract from L. plantarum B110 and L. satsumensis EN 38- 32 were sequently better to hidrolyze protein of cassava and rice paste flour than thatother tuber and cereal.","PeriodicalId":17694,"journal":{"name":"Jurnal Kimia Terapan Indonesia","volume":"66 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83181049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

The Effect of Acid Hydrolysis Treatment on the Production of Nanocellulose Based on Oil Palm Empty Fruit Bunches 酸水解处理对油棕空果串制备纳米纤维素的影响

Jurnal Kimia Terapan Indonesia Pub Date : 2019-06-27 DOI: 10.14203/JKTI.V21I1.416

A. A. Septevani, D. Burhani, Y. Sampora, Y. A. Devy, Gita Novi Ariani, S. Sudirman, D. Sondari, K. N. Mohd Amin

{"title":"The Effect of Acid Hydrolysis Treatment on the Production of Nanocellulose Based on Oil Palm Empty Fruit Bunches","authors":"A. A. Septevani, D. Burhani, Y. Sampora, Y. A. Devy, Gita Novi Ariani, S. Sudirman, D. Sondari, K. N. Mohd Amin","doi":"10.14203/JKTI.V21I1.416","DOIUrl":"https://doi.org/10.14203/JKTI.V21I1.416","url":null,"abstract":"Nanocellulose has been known as promising reinforcing material in various polymer based product resulted to remarkable improvement in mechanical and thermal properties. Hence, studies to date have developed and explored various sources of biomass to produce nanocellulose. The aims of this study are to synthesize and fully characterize nanocellulose obtained from abundantly available oil palm empty fruit bunches via two different methods which are strong (H2SO4) and mild acid (H3PO4) hydrolysis at 50 °C for 3.5 hours. Based on the morphological study using Transmission Electron Microscopy, rod like nanocellulose was obtained using strong acid hydrolysis while mild acid hydrolysis produced long filament shape. X-Ray diffraction analysis showed that the degree crystallinity of nanocellulose produced from strong acid hydrolysis was higher which is 96% than that of mild acid hydrolysis recorded with 86%. While the sulphuric acid hydrolysis usually produces lower thermal stability than that of other types acid hydrolysis, surprisingly, in this study, the thermal stability of nanocellulose from strong acid hydrolysis was relatively similar to mild acid hydrolysis due to the formation of single crystal structure affording unique characteristic of the obtained nanocellulose.","PeriodicalId":17694,"journal":{"name":"Jurnal Kimia Terapan Indonesia","volume":"163 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86441761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Preliminary Economic Study on the Production of ZnO Nanoparticles Using a Sol-Gel Synthesis Method 溶胶-凝胶合成法制备ZnO纳米颗粒的初步经济研究

Jurnal Kimia Terapan Indonesia Pub Date : 2019-06-27 DOI: 10.14203/JKTI.V21I1.407

Fikri Aziz Shalahuddin, Sera Serinda Almekahdinah, A. Nandiyanto

引用次数: 6

Self-Healing Concrete Using Bacteria Calcification from Karst Cave Environment 溶洞环境中细菌钙化自愈混凝土

Jurnal Kimia Terapan Indonesia Pub Date : 2019-06-27 DOI: 10.14203/JKTI.V21I1.411

A. Nugroho, A. Sumarno, Luna Ngeljaratan, D. Zulfiana, N. P. R. A. Krishanti, Triastutil Triastutil, E. Widodo

引用次数: 5