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Jurnal Kimia Terapan Indonesia

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Published by Lembaga Ilmu Pengetahuan Indonesia

ISSN : 08532788 EISSN : 25277669 DOI : -

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Materials Science & Nanotechnology

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Articles 5 Documents

Search results for , issue "Vol 19, No 2 (2017)" : 5 Documents clear

Briquettes from Tobacco Stems as the New Alternative Energy Okta Prima Indahsari
Jurnal Kimia Terapan Indonesia Vol 19, No 2 (2017)
Publisher : Research Center for Chemistry - LIPI

Tobacco briquettes is the new alternative energy developed in PTPerkebunan Nusantara X (PTPN X). The tobacco briquettes research isimportant for PTPN X because of three reasons: high availability of theraw material, it can be used as substitution for coal briquettes, andexpected for industrial scale. Currently, many researches have beenconducted for biomass-briquettes but only few who used tobacco. PTPN Xhave been cultivated tobacco only for its leaves which latter used for cigarand the rests were thrown as waste. By conducting the tobacco briquettesresearch, many forms of utilization are expected. For short term, the aimof this research is generating a diversification of added value - producfrom tobacco. For middle term, PTPN X is expected to be the role modelfor the tobacco growers. For long term, PTPN Xlâ€™s goal is to decreasecoal briquettes usage and break the negative stigma of tobacco.Briquetting process was conducted in Physical Laboratory of TobaccoResearch of Jember and the observation located in Tobacco ProcessingBarn of Ajong Gayasan PTPN X. Analysis of proximate test showed thatthe moisture content of tobacco briquettes with cassava starch as adhesivewas 8.00 to 8.97%, the volatile matter was 49.60 to 41.13%, the ashcontent was 9.93 to 7.89%, the fixed carbon was 32.47% to 42.01%, thesulphur content was 1.02 to 0.49%, the bulk density was from 0.35% to0.41%, the calorific value was from 4,285 to 4,586 cal/gr, and flammableduration was from 592 to 697 minutes. The briquetting process did notaffect the taste of leaves as cigar material.

Degradation of Oil Palm Empty Fruit Bunch (OPEFB) in Super-Critical Organic Solvents Affecting the Chemicals Distribution of Bio-Oil Rakhman Sarwono; Saepulloh Saepulloh; Brayen Brayen; Andreas Andreas; Yeyen Maryani
Jurnal Kimia Terapan Indonesia Vol 19, No 2 (2017)
Publisher : Research Center for Chemistry - LIPI

Hydrothermal liquefaction (HTL) of oil palm empty fruit bunch (OPEFB) in different organic solvents (methanol, ethanol, acetone, toluene and hexane) to produce bio-oil were comparatively investigated. Experiments were carried out in an autoclave at different temperature of 300, 350 and 400 oC with a fixed solid/liquid ratio of 4 gram in 50 mL solvent, without catalysts and reaction time of 5 hours. The liquid products were analyzed using GCMS to determine the chemical composition. Result showed that the chemical compositions were greatly affected by the solvent types. Each solvent has a major component in bio-oil products. The major compounds resulted from methanol and ethanol solvent were ketones/others. The major compounds resulted from toluene and hexane solvents were organic acid, which favoured high temperature. Meanwhile, esters and organic acid were the major products from acetone solvents. Temperature operation resulted more variations in the chemical composition and the percentages of the bio-oil.

The Comparative Study of Papain Enzyme from Papaya Fruits California variant and Indonesian Local variant Diah Ratna Ningrum; Wawan Kosasih; Sri Priatni
Jurnal Kimia Terapan Indonesia Vol 19, No 2 (2017)
Publisher : Research Center for Chemistry - LIPI

Papain (E.C.3.4.22.2) is a proteolytic enzyme which has important role due toits diverse uses in textile, pharmaceutics, cosmetics and food industries.Papain enzyme can be found in almost all parts of the papaya plant and mostof the stem and fruit. The objective of this study is to compare the Californiavar. and Indonesian local var. of papaya fruits, in papain production and alsoto characterize the enzyme properties. Results showed that the highest yield ofcrude papain was obtained from local papaya latex (24.87%) whichprecipitated by ethanol with ratio of 1:2. The highest of activity enzyme,soluble protein and specific enzyme activity obtained from the local papayawere 3154 Â± 11.31unit/mL, solubility protein of 0.94Â± 0.08 mg/mL andspesific enzyme activity of 3355.32 unit/mg protein, respectively. The activityof enzyme fraction F7 obtained from purification by DEAE sepharose columnwas 202.33 U/mL dan the molecular weight of this fraction was between 17-28 kDa.Â© 2

The Synthesis of Cinchonine Tiglat Ester Compound and Cytotoxic Test Against MCF-7 Breast Cancer Cell Ahmad Khanifudin; Gian Primahana; Sylvia Rizky Prima; Puspa Dewi Lotulung; Muhammad Hanafi
Jurnal Kimia Terapan Indonesia Vol 19, No 2 (2017)
Publisher : Research Center for Chemistry - LIPI

Cinchonine is a type of cinchona alkaloid compound commonly found and/or isolated from Cinchona sp. plant. It is commonly used to treat malaria, and can potentially be used against cancer cells. In this particular study, cinchonine ester derivatives were extracted through esterification processs. Synthesized esther is aimed to gain higher lipophilicity of cinchonine so that makes it easier to pass through cell membrane. Esterification was done using DCC activator as well as DMAP catalyst with tiglic acid used to create cinchonine tiglat. Subsequent cinchonine tiglat was obtained in the form of oil with 25,28% yield. The compound obtained from the synthesis was the analyzed using LC-ESI-MS and 1H-NMR spectroscopy instrumentation. Results show that the target compound has been successfully synthesized. Its cytotoxic ability against MCF-7 breast cancer cells was tested using the Alamar Blue method. Results concluded that cinchonine tiglat ester compound has a viable cytotoxic activity with IC50 value of 1.22 ppm.

Effect of initial inoculum on growth and fatty acid content as an Î±-glucosidase inhibitor in Colletotrichum sp. TSC13 mycelium that cultures under shake and static conditions Nina Artanti; Leonardus B.S. Kardono; Sanro Tachibana
Jurnal Kimia Terapan Indonesia Vol 19, No 2 (2017)
Publisher : Research Center for Chemistry - LIPI

Colletotrichum species were reported producing various bioactive compounds that may potentially be used in the development of anti-microbial, antioxidant, anticancer and anti-diabetes drugs. Our previous studies showed that the methanol extracts of mycelia from Colletotrichum sp. TSC13, an endophytic fungus isolated from Taxus sumatrana (Miq.) de Laub., were found to have Î±-glucosidase inhibitory activities. The aim of present study was to examine the effects of initial inoculum on growth and the content of fatty acids as an Î±-glucosidase inhibitor in Colletotrichum sp. TSC13 that grew under shake and static condition. The results showed that shake and static conditions had more effect compared to the initial inocculum on growth and glucose consumption in growth and glucose consumption. However in terms of fatty acids contents and Î±-glucosidase inhibitor activities the initial inoculum showed more effect than shake and static conditions

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