cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota adm. jakarta selatan,
Dki jakarta
INDONESIA
Jurnal Kimia Terapan Indonesia
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : 08532788     EISSN : 25277669     DOI : -
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Materials Science & Nanotechnology
Arjuna Subject : -
Articles 283 Documents
 10   11   12   13   14 
NILAI TAMBAH MINYAK AKAR WANGI DENGAN PEMEKATAN KADAR VETIVEROL MENGGUNAKAN EKSTRAKSI CO2 FLUIDA SUPERKRITIK Anny Sulaswatty; Egi Agustian
Jurnal Kimia Terapan Indonesia Vol 16, No 2 (2014)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1647.411 KB) | DOI: 10.14203/jkti.v16i2.11

Abstract

Potensi Indonesia akan minyak akar wangi yang berorientasi ekspor dalam industri kosmetik, parfum, sabun, keperluan terapi, antiseptik, massage oil, farmasi dan pestisida memberikan peluang yang besar untuk memenuhi kebutuhan dunia. Guna nilai tambah minyak akar wangi dengan meningkatkan kadar vetiverol sebagai komponen utama, diaplikasikan teknologi ekstraksi fluida karbondioksida superkritik yang merupakan perpaduan ekstraksi, fraksinasi dan deodorisasi dengan didukung keunggulan karbondioksida sebagai pelarut yang inert, ramah lingkungan, mudah dipisahkan, dan berdaya larut tinggi.  Minyak akar wangi Garut (Java vetiver oil) sebagai bahan baku, mempunyai karakteristik  kadar vetiverol  39.03 %; Bobot jenis 0.9977; indeks bias 1.5247;  putaran optik +38.1; kelarutan dalam alkohol 95%  yaitu 1:1 jernih; bilangan asam 28.1; bilangan ester 24.6; bilangan ester setelah asetilasi 115.5; serta tidak mengandung minyak lemak dan  minyak keruing. Pemilihan kondisi proses guna menghasilkan kandungan vetiverol optimal dilakukan dengan memvariasikan laju alir gas CO2, tekanan dan suhu sebagai parameter penting dalam keberhasilan proses ekstraksi minyak akar wangi dengan fluida CO2 superkritik. Pemilihan laju alir konstan dan lebih stabil  diperoleh pada 5.5 liter/menit, sedangkan untuk variasi tekanan ekstraktor (1500, 1750, 2000 psi) dan suhu ekstraktor (40-50oC);  tekanan dan suhu separator  500 psi dan 25oC serta waktu proses selama lima jam dengan pengambilan ekstrak setiap jam. Tekanan dan suhu proses yang optimal diperoleh pada 1750 psi dan suhu 40oC  dengan  rafinat minyak akar wangi berkadar vetiverol  51.82 %,  bilangan ester 7.2 dan bilangan ester setelah asetilasi  172.4. Tingginya tekanan dan rendahnya suhu berpengaruh terhadap perolehan ekstrak; penurunan rafinat; peningkatan nilai  bobot jenis ekstrak dan rafinat; indeks bias ekstrak dan rafinat; putaran optik ekstrak dan rafinat; peningkatan viskositas ekstrak dan rafinat; peningkatan bilangan ester ekstrak, bilangan ester setelah asetilasi ekstrak, serta kandungan vetiverol.Kata Kunci: Minyak Akar Wangi, Vetiverol, Ekstraksi Fluida Superkritik Potential Indonesian vetiver oil export oriented industry of cosmetics, perfumes, soaps, therapeutic purposes, antiseptic, massage oil, pharmaceutical and pesticide presents a great opportunity to meet the needs of the world. In order to add value vetiver oil by increasing the levels vetiverol as the main component, was applied to carbon dioxide supercritical fluid extraction technology which is a combination of extraction, fractionation and deodorization with excellence supported carbon dioxide as an inert solvent, eco-friendly, easily separated, and the high solubility. Garut vetiver oil (Java vetiver oil) as raw material, has the characteristics vetiverol levels 39.03%, specific gravity of 0.9977; refractive index of 1.5247; optical rotation +38.1; solubility in alcohol 95% is a clear 1:1; acid number 28.1; ester number 24.6; ester number after acetylation 115.5; as well as fats and oils contain no oil keruing. The selection process conditions in order to produce optimal vetiverol content performed by varying the flow rate of CO2 gas, pressure and temperature as an important parameter in the success of vetiver oil extraction with supercritical CO2 fluid. The selection of a constant flow rate and more stable obtained at 5.5 liters / min, whereas for pressure variation extractor (1500-2000 psi) and extractor temperature (40-50oC); separator pressure and temperature of 500 psi and 25 °C as well as the processing time for five hours by taking extracts every hour. Pressure and temperature optimum process obtained at 1750 psi and a temperature of 40oC with rafinat vetiverol vetiver oil yield of 51.82%, ester number 7.2, and ester number after acetylation 172.4. The high pressure and low temperature affect the acquisition of the extract; rafinat decline; increase in the value of specific gravity and rafinat extracts; refractive index and rafinat extract; optical rotation and rafinat extract; increase in the viscosity of the extract and rafinat; increase in numbers ester extract, ester number after acetylation extracts, as well as the content vetiverol. Key word: Vetiver Oil, Vetiverol, Supercritical Fluid Extraction.
PENGARUH AIR DALAM AMPAS TEBU TERHADAP KECEPATAN PENYALAAN DALAM PEMBAKAR PUTAR Syahrul Aiman
Jurnal Kimia Terapan Indonesia Vol 1, No 1 (1991)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3253.569 KB) | DOI: 10.14203/jkti.v1i1.193

Abstract

The pyrolysis of sugar cane bagasse at peak temperatures between 300 and 1100 "C and at heating rates of 200 - 10,000 °Cjs produced water, primary tar, C02 and char. Further decomposition of the primary tar resulted gases and secondary tar. The conversion of dry bagasse to volatile materials was 91.6 %. Bagasse water content influenced the pyrolysisproducts composition. It decreased the maximum yield of secondary tar from 50.6 to 39.8 %, increased total gas yield from 34.5 to 54.7 % and ultimate char yield from 8.4 to 11.7 % (of theinitial dry sample weight). For combustion  engineeringpurposes, a singlefirst order reaction model with E = 12.9 kcai/mole, A = 3.33 x 1& s·1 and W· = 88.7 % was a suitable model to predict bagasse pyrolysis reaction rate based on the total weight loss data. The calculation indicated that water in bagasse-decreasedignition rate in a bagasse swirl burner.
PENGARUH TEKNIK SINTESIS TERHADAP KUALITAS PRODUK FATTYAMINA SEKUNDER Komar Sutriah; Zainal Alim Mas'ud; Tun Tedja Irawadi
Jurnal Kimia Terapan Indonesia Vol 13, No 1 (2011)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5962.283 KB) | DOI: 10.14203/jkti.v13i1.123

Abstract

Secondary fattyamines has been synthesized by reacting primary fatty amines with acylchlorides and continued with reducing the corresponding secondary fattyamides formed to secondary fattyamines using LiAIH<I'Fatty amines are raw material of natural-based surfactants that can be derived from fatty acids, olefins, or alcohols, of which can be synthesized from natural sources such as palm oil. Conversion of secondary fatty amides to secondary fatty amines was evaluated through the quality of FTIR spectra on wave number of 1639-1645 em' (C=O vibration) and 1544-1555 em" (vibrations of C-H and of secondary amine N-H). Method of synthesis by using closed reflux syncore reactor was better than those of using microwave teflon tubes, and open reflux. The yield of 9 different secondary fatty amines obtainedfrom 5 to 27 replicates by the closed reflux syncore reactor method varied from 17%to 96%.Keywords: Natural-based surfactant, secondary fatty amines
COMPUTER-ASSISTED STRUCTURE ELUCIDATION OF HUMULENE EPOXIDE AND CARYOPHYLLENE EPOXIDE MIXTURE OF TURRAEA BROWNII Tahid Tahid; J. D. Connolly
Jurnal Kimia Terapan Indonesia Vol 4, No 1 (1994)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1970.96 KB) | DOI: 10.14203/jkti.v4i1.259

Abstract

An experiment was carried out to isolate active material from Turraea brownli for biological insectislde. The isolated component obtained by using TLC was elucidated with iH NMR, and 13C NMR techniques. It was found that the compound was unknown triterpenoid (C30H48O). Further elucidation using 2D NMR with COSY, HMBC, and HMQC combined with computer techniques showed that the component was an approximately equimolar mixture of two sesqulterpenes (C15H24O) which were identified as humulene epoxide and B-caryophyllene epoxide.
PERKEMBANGAN TEKNOLOGI DAN TANTANGAN DALAM RISET BIOETANOL DI INDONESIA Syahrul Aiman
Jurnal Kimia Terapan Indonesia Vol 16, No 2 (2014)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3011.334 KB) | DOI: 10.14203/jkti.v16i2.16

Abstract

Bioetanol merupakan andalan untuk mengurangi penggunaan BBM non diesel untuk transportasi.  Penelitian untuk mencari bahan baku dan proses yang ekonomis serta ramah lingkungan menjadi kegiatan riset di berbagai Negara, terutama sejak terjadinya krisis BBM akibat peningkatan konsumsi BBM diseluruh dunia diawal tahun 1970an.Berdasarkan bahan baku yang dipakai, bioetanol dikelompokkan menjadi bioetanol generasi pertama  yang dibuat dari  gula, atau pati, dan  generasi kedua adalah yang dibuat dari lignoselulosa, disebut sebagai Etanol Selulosa. Generasi ketiga dibuat dari alga disebut sebagai Etanol Alga, dan generasi keempat dibuat dari bahan hasil modifikasi genetika atau bahan lainnya, disebut sebagai Advanced Bioethanol dalam kelompok Advanced Biofuels.Indonesia, sebagai Negara beriklim tropis, memiliki berbagai tanaman penghasil pati, lignoselulosa, alga dan berbagai limbah organik untuk pembuatan bioetanol.Industri bioetanol di Indonesia masih memanfaatkan komoditi  pangan seperti ubi kayu  dan molase tebu sebagai bahan baku, sedangkan lembaga litbang dan perguruan tinggi sudah melakukan penelitian membuat bioetanol generasi kedua maupun ketiga.  Pemerintah Indonesia berupaya  untuk meningkatkan penggunaan bioetanol sebagai campuran bahan bakar kendaraan non diesel sampai mencapai 15 % etanol dalam  campuran (E-15) pada tahun 2025. Dibanyak Negara, pemanfaatan etanol untuk bahan bakar kendaraan sudah bervariasi dari campuran E-10  sampai dengan E-85.Tinjauan  ini mengungkap perkembangan teknologi pada setiap generasi, dan  mengindikasikan tantangan yang dihadapi lembaga litbang di dalam negeri dalam mengembangkan teknologi pembuatan bioetanol dari biomasa lokal. Area penelitian yang prospektif  dalam bidang ini juga dikemukakan.Kata Kunci : bioetanol, molase tebu, generasi, perkembangan teknologi, tantangan riset.  Bioethanol is a potential energy source to reduce gasoline utilization for transportation. Research activities to find out raw material and environmentally and economically process have been conducted in many countries especially after the oil crisis in early 1970s. Based on raw material processed, bioethanol is grouped into first, second, third and fourth generations. The first generation is derived from sugar or starch, the second generation is derived from lignocellulosic biomass, called as cellulosic ethanol. The third generation is produced from algae, called as Ethanol Algae, while the fourth generation is grouped as advanced biofuels.Indonesia, as a tropical country, posseses various kind of starchy plant,  lignocellulosic materials, various species of algae, and organic wastes for ethanol production. Local bioethanol industries utilize food materials such as cassava and sugarcane molasse as feedstock,  while universities and R&D institutions have conducted researches to produce the second or the third generations bioethanol.  The government of Indonesia has planned to increase utilization of bioethanol in bioethanol-gasoline mixture for transportation up to 15 % (E-15) by 2025. In many countries, utilization of bioethanol for transportation vary in a range from E10 to E 85.This review shows technology development at each generations, and indicates challenges  for local R&D institutions in order to develop technology for bioethanol production utilizing local biomass. Prospectives research areas in the field are also highlighted.Keywords :bioethanol, sugarcane molasses, generations, technology development, research challenges.
FAKTOR-FAKTOR YANG MEMPENGARUHI KUALITAS TEMPE DI INDONESIA Lindajati Tanuwidjaja; Hari Rom Hariyadi; Yetty Mulyati
Jurnal Kimia Terapan Indonesia Vol 1, No 1 (1991)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2465.914 KB) | DOI: 10.14203/jkti.v1i1.198

Abstract

Field Sill dies all tempe home industries had been carried out ill 1975- 1976 and 1987, covering 25 tempe home industries ill West Java and Jakarta areas, 15 ill Central Java and Yogyakarta areas and 15 ill East Java. The quality and price of tempe samples collected from the visited industries and market varied considerably. The price of tempe. varied from Rp 400,-/Kg to Rp l.000,-/Kg in 1987, while the protein content varied from 14.8% to 22.7%. The variation in fat, carbohydrate, fiber and ash content was also observed. Variation was observed also in the use of raw mdterials, additives and inocula as well as variation ill tempe processing techniques, i.e. in the soaking, cooking and inoculation which had caused the variation in tempe quality
Lembar Abstrak . editor
Jurnal Kimia Terapan Indonesia Vol 14, No 2 (2012)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (220.419 KB) | DOI: 10.14203/jkti.v14i2.345

Abstract

PERANCANGAN DAN PEMBUATAN DIVAIS SENSOR GAS CO BERBASIS INDIUM TIMAH OKSIDA (ITO) DENGAN TEKNOLOGI LAPISAN TIPIS Slamet Widodo; Goib Wiranto
Jurnal Kimia Terapan Indonesia Vol 17, No 1 (2015)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (630.964 KB) | DOI: 10.14203/jkti.v17i1.21

Abstract

In this paper it will be described the design and manufacturing of microdevice to be used as platform for Carbon monoxide (CO) gas sensor based on indium tin oxide (ITO). The device has been designed on silicon substrate with an active area of 3x3 mm2 , and consisted of bonding pad, heater, electrode, and temperature sensor components. The minimum feature size used is 50 microns, as allowed by the capability of photolithographic process. The formation of microdevice structure has been done mainly using lift-off technique on platinum (Pt) layer, which was deposited by DC sputtering with aluminium (Al) as sacrificial layer. The overall chip dimension is not more than 5x5 mm2.  The measurement conducted to study the resistance versus temperature characteristics has shown  that the heater and temperature sensor elements have functioned as expected, in which their resistances change linearly with an increase in substrate temperature between 20 – 200 oC. The range of increase in resistance values for the heater is 500 – 1000 ohm, whereas for the temperature sensor is 100 – 300 ohm.Keywords: Microdevices, lift-off process, sputtering, electrode, heater, gas sensor, ITO, CO gas.
Studi Kimia Tumbuhan Obat Tradisional Indonesia (1) ELUSIDASI STRUKTUR KIMIA TUMBUHAN "SONGA", Strychnos ligustrida BI. (Loganiaceae) Partomuan Simanjuntak; Titik K. Prana
Jurnal Kimia Terapan Indonesia Vol 8, No 1-2 (1998)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jkti.v8i1-2.203

Abstract

The plant of Strychnos species were known as a resource of alkaloid compounds. One of them close to Strychnos ligustrida Bl. which its local name known as "Songa" was collected from Nusa Tenggara Barat, Bima area, and evaluated for their chemical constituents.Results of chemical studies on this plant constituents indicated that two out of several components, colobrine N-oxide and strychnine N-oxide alkaloids have been succesfully isolated and identified.Determination of chemical structure of the alkaloid was conducted by analyzing their spectra of infrared, Nuclear magnetic resonances (one and two) dimensional NMR such as IH-IH COSY, 13C-1H COSY, COLOC and mass spectrometry.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (327.223 KB) | DOI: 10.14203/jkti.v19i2.242

Abstract

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 ± 11.31unit/mL, solubility protein of 0.94± 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.© 2

Page 12 of 29 | Total Record : 283

 10   11   12   13   14 

Filter by Year

1991 2022


Reset
Filter By Issues
All Issue Vol 24, No 1 (2022): Jurnal Kimia Terapan Indonesia Vol 23, No 2 (2021): Jurnal Kimia Terapan Indonesia Vol 23, No 1 (2021) Vol 22, No 1 (2020) Vol 21, No 2 (2020) Vol 21, No 1 (2019) Vol 20, No 2 (2018) Vol 20, No 1 (2018) Vol 19, No 2 (2017) Vol 19, No 1 (2017) Vol 18, No 02 (2016) Vol 18, No 01 (2016) Vol 17, No 2 (2015) Vol 17, No 1 (2015) Vol 16, No 2 (2014) Vol 16, No 1 (2014) Vol 15, No 2 (2013) Vol 15, No 1 (2013) Vol 14, No 2 (2012) Vol 14, No 1 (2012) Vol 13, No 2 (2011) Vol 13, No 1 (2011) Vol 12, No 2 (2010) Vol 12, No 1 (2010) Vol 11, No 2 (2009) Vol 11, No 1 (2009) Vol 10, No 1-2 (2000) Vol 9, No 1-2 (1999) Vol 8, No 1-2 (1998) Vol 7, No 1-2 (1997) Vol 6, No 1-2 (1996) Vol 5, No 1 (1995) Vol 4, No 2 (1994) Vol 4, No 1 (1994) Vol 3, No 2 (1993) Vol 3, No 1 (1993) Vol 2, No 1-2 (1992) Vol 1, No 2 (1991) Vol 1, No 1 (1991) More Issue