Garuda - Garba Rujukan Digital

All

Jurnal Kimia Terapan Indonesia

InaJAC
Website

Published by Lembaga Ilmu Pengetahuan Indonesia

ISSN : 08532788 EISSN : 25277669 DOI : -

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

Arjuna Subject : -

Articles 7 Documents

Search results for , issue "Vol 12, No 2 (2010)" : 7 Documents clear

PENERAPAN MEMBRAN MIKROFILTRASI PADA PEMURNIAN EKSTRAK KALDU KACANG HIJAU (Phaseolus radiatus L.) SEBAGAI FORTIFIKAN PRODUK MAKANAN Aspiyanto Aspiyanto; Agustine Susilowati
Jurnal Kimia Terapan Indonesia Vol 12, No 2 (2010)
Publisher : Research Center for Chemistry - LIPI

In preparation of mung bean (Phaseolus radiatus L.) broth extract asfortificant agent offood products via purification by means of microfiltration (MF) membrane, operation conditions have important role. Application of MF membrane modul is afurther process of purification from small scale (Stirred MF cell, 30.175 cm2 of membrane area) to bench-scale (Cross-flow MF modul, 360 cm2 of membrane area). The main goal of this work was to find out effect of flow rate of material and operation pressure on compositions of concentrate/retentate and permeate from mung bean broth extract as savoury (umami)-based fortificant agent offood products. Preparation of mung bean broth extract was conducted by introducing broth extract of crude mung bean to Cross-flow MF modul at pump motor frequency of l0 and 20 Hz, room temperature and operation pressure of 2, 4 and 6 bar, respectively. Investigation was performed on permeate flux value, and analysis was conducted on concentrate/retentate and permeate, covering on total solids, dissolved solid, total protein, dissolved protein, N-amino and salt. The result of experiment showed that pump motor frequency and operation pressure affect on concentrate/retentate and permeate compositions. Increase of pump motor frequency and operation pressure increase permeate composition, but they tend to be almost similar on concentrate/retentate of mung bean broth extract. Treatment combination at pump motor frequency of 20 Hz and operation pressure of 2 bar generated the best composition of concentrate/retentate as hydrolyzed vegetable protein (HVP) with concentrations of total solids of 3.98 %, soluble solid of 6.05 %, total protein of 5.65 %, dissolved protein of 5.3 mg/mL, N-amino of 0.95 mg/mL and salt of 2.04 %, while permeate gave flux value of 32.19 L/m2.hour with concentrations of total solids of 5.74 %, soluble solid of 5.04 %, total protein of 4.51 %, dissolved protein of 4.05 mg/mL, N-amino ofl.08 mg/mL and salt of 2.2 %, and had useful potency asfood savoury flavor.Keyword : Mung bean (Phaseolus radiatus L.) broth, microfiltration (MF), concenirate/reieniaie, permeate, hydrolysate.

PREPARATION OF MgO-CeO2 MIXED OXIDE WITH IONIC LIQUID AS CATALYST FOR DIMETHYL CARBONATE SYNTHESIS VIA TRANSESTERIFICATION Haznan Abimanyu; Kye Sang Yoo; Byoung-Sung Ahn
Jurnal Kimia Terapan Indonesia Vol 12, No 2 (2010)
Publisher : Research Center for Chemistry - LIPI

The synthesis and application of dimethyl carbonate (DMC) are achieving increasing importance due to its low toxicity and versatile reactivity. The phosgenation-route has been losing attraction recently due to the use of virulent phosgene. In transesterification process, DMC is co-generated with ethylene glycol (EG). In this study, various ionic liquids were used as template in coprecipitation methods to prepare mesoporous MgO-CeO2 mixed oxides particles. Among the ionic liquids, [Bmim][BF6] displayed the best performance in terms of activity, while [Omim][PF6] obtained the best selectivity for this reaction. The addition of IL's in the coprecipitation method increased the surface areaand pore volume of the catalysts. Meanwhile, the crystallite size of the catalysts was reduced many times. However, there is no effect of the surface areaand particle size as well on the catalytic activity of the catalyst in this reaction. The activity and selectivity of the catalyst depend on the base strength distribution. The moderate basic site is responsible for the catalytic activity, while the selectivity is more dependableon the strong basic site. Keyword: preparation, MgO-CeO2, ionic liquid, dimethyl carbonate, coprecipitati

SIFAT DAYA SERAP AIR DAN STABILITAS PENYERAPAN AIR HIDROGEL POLIMER KOMPOSIT Muhamad Nasir
Jurnal Kimia Terapan Indonesia Vol 12, No 2 (2010)
Publisher : Research Center for Chemistry - LIPI

Hydrogel polymer composite has been synthesized by using 10L scale reactor with batch systems. Hydrogel was synthesized by radical polymerization of a mixture of carboxy methyl cellulose, acrylic acid and methylene bis acrylamide as crosslinker. Hydrogel polymer composite was prepared by adding bentonite to polymer hydrogel. Swelling ratio which indicates of water absorption of hydrogel polymer composite was 60 g / g with a standard deviation of 6.2 %. Durability and stability tests for water absorption of hydrogel polymer composite for 15 days showed the swelling ratio is almost constant and hydrogel is quite stable and not broken down quickly. Effect of temperature and salt solution on water absorption as follow; the water absorption at higher temperatures lower than room temperature and the water absorption from the salt solution is lower than the water absorption of pure water. These results show the hydrogel polymer composite is sensitive to temperature and salt solution.Keyword: hydrogel polymer composite, water absorption,hydrogel stability.

ISOLATION AND IDENTIFICATION OF 9-METHOXYCANTHIN-6-0NE COMPOUND FROM Eurycoma longifolia ROOTS Sofa Fajriah; Muhammad Hanafi; Atiek Sumiati; Ngadiman Ngadiman
Jurnal Kimia Terapan Indonesia Vol 12, No 2 (2010)
Publisher : Research Center for Chemistry - LIPI

9-Methoxycanthin-6-one compound has been isolated from Pasak Bumi (E. Longifolia) roots. The isolation process using maseration, colum chromatography vacuum, and recrystallization techniques. E. Longifolia root maserated with n-hexane and methanol respectively. The methanol extract fractionated using column chromatography vacuum with gradient elution (hexane-etil acetate) to obtain 9 fractions. Fraction 5 further purification using recrystallization technique to obtain yellow crystal, identified by LC-MS and NMR spectroscopy as 9-Methoxycanthin-6-one.Keyword: E. Longifolia, isolation, spectroscopy, 9-Methoxycanthin-6-one.

UJI PELINDIAN SENYAWA-SENYAWA TEMBAGA DAN TIMAH HITAM SETELAH STABILISASI/SOLIDIFIKASI DENGAN SEMEN PORTLAND MENGGUNAKAN ROTARY AGITATOR Ardeniswan Ardeniswan
Jurnal Kimia Terapan Indonesia Vol 12, No 2 (2010)
Publisher : Research Center for Chemistry - LIPI

In this study, wastewater used in the experimental is an artificial wastewater containing copper and lead with each concentration of 500 mg/L. Metal ions were precipitated as hydroxide compounds [Cu (OH2, Pb(OH)2] and sulfide compounds (CuS, PbS). The precipitate partly was direct leached tested and the other part was stabilized/solidified by using Portland cement. Furthermore, TCLP test (Toxicity Characteristic Leaching procedure) was done by using the Rotary Agi tator with rotational speed 30±2 rpm for 18±2hours.From the TCLP test results showed that the compounds of CU(OH)2 and Pb(OH)2 leached without solidification process which carried out with Portland cement, both are 0.86 mg/L and 45.6 mg/L. While thecompounds CuS, and PbS leached also without solidification process which carried out with Portland cement, are424mg L; and 159 mg L.When the compounds of Cu(OH)2, CuS, Pb(OH)2, PbS were stabilized/solidified with Portland cement at the ratio 1:1, apparently both of copper ions from Cu(OH)2, and lead ions from Pb(OH)2 did notexperience leaching. In contrast to copper ions in the form of CuS, and lead ions in theform PbS, leaching was experienced at 3.56 mg/L and 1.16 mg/L. These values were still below the required quality standard for TCLP.Keyword : wastewater, heavy metals, hazardous waste, stabilization/solidification, TCLP test.

UJI AKTIVITAS EKSTRAK DAN FRAKSINASI DAUN BRUCEA JAVANICA (Merril) SECARA INVITRO Megawati Megawati; M Angelina
Jurnal Kimia Terapan Indonesia Vol 12, No 2 (2010)
Publisher : Research Center for Chemistry - LIPI

Brucea javanica (Merril) is a tropical plant widely grown in Indonesia, Brucea javanica has a bitter taste efficacious to reduce the heat and remove toxins, lethal parasites, anti-anti-dysentery and malaria. Chemical compounds contained in many of which have bioactivity. Antidiabetic test has been performed with a-glucosidase method, anti-oxidant test method "DPPH free radical scavenger" and BSLT toxicity test method (Brine Shrimp Lethality Test) of ethanol extractB.javanica. In the ethanol extract of leaves of the partition B.javanica performed using hexane, ethyl acetate and butanol. Then test each fraction in vitro activity. Test results showed that activity of ethylacetate is active as an anti-oxidant with IC50 value of 89,75 ppm and 7,52 ppm LC50 toxic values while antidiabetic did not have activites.Keyword : Antidiabetic, anti-oxidant, toxicity, a-glukosidase, DPPH, Brine Shrimp Lethality Test, Brucea Javanica(Merril).

AKTIVITAS ANTIDIABETES EKTRAK ETIL ASETAT DAUN PANDAN WANGI (Pandanus amaryllifolius Roxb.) Dede Sukandar; Sandra Hermanto; Imamah Al Mabrur
Jurnal Kimia Terapan Indonesia Vol 12, No 2 (2010)
Publisher : Research Center for Chemistry - LIPI

This research done to know activity antidiabetes from fragrant screw pine leaf ethyl acetate extract (Pandanus amaryllifolius Roxb.) applies method aglukosidase. Extract is made by the way ofmaceration to apply ethyl acetate. Test antidiabetes is done by using enzyme a-glukosidase and PNP-a-D-glukopiranosida. Fragrant screw pine leaf ethyl acetate extract haves the character of antidiabetes with resistance activity, IC50 value as 94,23 ppm. Result of GCMS identification shows fragrant screw pine leaf ethyl acetate extract contains active compound of its the fatty acid and deriuaies, terpenoids, and steroid.Keyword : Antidiabetes, Ekstrak Etil Asetat, Pandanus amaryllifolius Roxb, a-glukosidase, PNP-a-D-glukopiranosida.

Page 1 of 1 | Total Record : 7

Filter by Year

2010 2010

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

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

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

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

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kota adm. jakarta selatan,

Dki jakarta

INDONESIA