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JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya
Published by Universitas Negeri Malang
ISSN : 25496565     EISSN : 25496573     DOI : 10.17966
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology
JC-T (Journal Cis-Trans) : jurnal kimia dan terapannya is published by Universitas Negeri Malang, Faculty of Mathematics and Science, Chemistry Department.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 6 Documents
 1 
Search results for , issue "vol. 1 no. 1 (2017)" : 6 Documents clear
Sintesis dan Karakterisasi Senyawa-senyawa Hidroksi Ester Minyak Jarak Cina (Castrol Oil) Parlan Parlan; Siti Marfu’ah; Yuyun Musabbikha
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 1 No. 1 (2017)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um026v1i12017p001

Abstract

The utilization of castor oil as a lubricant is very limited, because it was only used on the machine hydraulic. This is because their highly viscosity. In addition, the double bond in ricinoleic acid (cys-12-hydroxy-9-oktadecenoic acid) as the main constituent of castor oil is easily oxidized. The conversion of double bonds in the castor oil into another group will increase its resistance to oxidation. This research aims to synthesize the compounds of the hydroxyl ester derivatives of castor oil by converting the double bond in the fatty acid into hydroxyl and ester groups. This study consists of two main steps: 1) epoxidation of castor oil with performic acids, 2) opening of the epoxide ring with formic acid to form hydroxyl ester compound. Analysis and identification of the compounds is done by thin layer chromategraphy and infrared spectrometry. Characterization of compounds synthesized using the refractive index and viscosity. The results showed that the hydroxyl ester compounds can be synthesized from castor oil by epoxide double bonds and followed by ring opening of epoxides with carboxylic acids. Based on the character of the refractive index and viscosity is known that hydroxyl ester derivatives of castor oil could potentially be used as a
Pembuatan Bioetanol dengan Cara Hidrolisis Menggunakan Kertas Koran Bekas serta Pemurnian Menggunakan Agen Pengering (MgSO4, Na2SO4, dan CaCl2) Charisma Nurwiyono Putri; Budi Utami
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 1 No. 1 (2017)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um026v1i12017p010

Abstract

This research was performed to: (1) utilize newspaper as raw material for bioethanol production and (2) examine the effectively of bioethanol purification of newspaper by using Na2SO4, CaCl2, and MgSO4 substances. This research was used by experimental method. First step of bioethanol production wasconducted using a pretreatment process to break down the lignin content. Hydrolysis of newspaper was done enzymatically using the cellulose enzyme. Bioethanol purification method of newspaper was done through destillation and desiccantion methods using MgSO4, Na2SO4, and CaCl2 as drying agent. Bioethanol characterization was determined by Gas Chromatography/Mass Spectroscopy (GCMS) and Fourier Transform Infrared Spectroscopy (FTIR). The results of this research indicated as follows: (1) newspaper can be used as raw material for second generation of bioethanol production with pretreatment process, enzymatical hydrolysis, fermentation, and destillation and (2) NaSO4, CaCl2, and MgSO4 substances can be used to purify bioethanol with MgSO4 as the most optimum substances for purifying bioethanol from newspaper.
Aktivitas Antibakteri Metabolit Sekunder dari Ekstrak Metanol Biji Alpukat (Persea americana Mill) Rini Retnosari; Sutrisno Sutrisno; Karim Handoyo
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 1 No. 1 (2017)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um026v1i12017p016

Abstract

An antibacterial activity of secondary metabolite has been isolated from methanol extract of avocado seed (Parsea americana Mill). The isolation process has started with extracting using methanol, then fractioning and purifying by chromatography technique such as vacuum liquid chromatography and gravitation column chromatography. The white solid of K-1 component has been isolated from this process. The melting point of K-1 component was 67-70˚C and dissolved in chloroform, ethyl acetate, and ethanol. K-1 component has λmaks at 219,0 nm (π→π* transition) and 344,0 nm (n→π* transition). Based on IR spectrum interpretation, this component contained –OH group, -C=O group of ester, -CH bond, and C=C bond. K-1 component was predicted as saponin group. The antibacterial activity assay against Escherichia coli and Staphylococcus aureus indicated that methanol extract of avocado seed and K-1 component showed antibacterial activity toward both bacteria, so that this component has future chances for traditional medicine development.
Ekstraksi Tannin dari Daun Sirsak (Annona muricata L.) sebagai Pewarna Alami Tekstil Nana Chintya; Budi Utami
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 1 No. 1 (2017)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um026v1i12017p022

Abstract

This research aims to: (1) determine the optimum ratio of ethanol-water for the extraction of tannin from soursop leaves, (2) determine the optimum time for the extraction of tannin from soursop leaves, (3) determine the proper fixation material to produce optimal color fastness of natural dyes tannin from soursop leaves, dan (4) find a natural dye from soursop leaves that can be applied as a natural dye in textiles with high quality and environmentally friendly. This research used experimental method. Soursop leaf was extracted using soxhletation methods at 80oC (rasio of ethanol-water = 1:1, 1:2, 1:4, extraction time = 1, 2, 3 hours). The tannin qualitative test done with FeCl3 method.. The tannin quantitative test done with Folin-Ciocalteu method. Dyeing process included mordanting , coloring, fixation (with Tunjung, chalk, and Tawas). The color fastness was tested with Laundrymeter and Crockmeter. The research concluded that: (1) the optimum ratio of ethanol-water for extraction of tannins from soursop leaves is 1: 1, (2) the optimum time for extraction of tannin from soursop leaves is 2 hours, (3) fixation material that produces optimal color fastness of natural dyes soursop leaves is tawas
Pengaruh Derajat Keasaman (pH) Media Tanam dan Waktu Panen pada Fortifikasi Selenium Jamur Tiram Putih (Pleurotus ostreatus) Irma Kartika Kusumaningrum; Neena Zakia; Cyntia Nilasari
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 1 No. 1 (2017)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um026v1i12017p030

Abstract

White oyster mushroom (Pleurotus ostreatus) is a very popular food. Selenium is one of the essential micro­nutrients for human. The intake of selenium is low. The aim of this research is to analyze some factors that affect to selenium fortification on white oyster mushrooms. White oyster mushrooms are saprophytic plants that absorb their food from their growing media, so the growth periode and their fruit body content is influ­enc­ed by the composition and the acidity (pH) of their growing media. This paper describes about the effect of acidity (pH) and the harvesting time on the selenium content of oyster mushroom. From the results, we conclu­d­­ed that the most rapid growth of mycelium occurred on the oyster mushroom that grown on growing media with pH 8. The selenium content of mushroom fruit body are influenced by their mycelia growing period, the oyster mushroom that grown on growing media with pH 6 had the highest selenium content ,and there is sig­ni­ficant difference between the content of selenium of the mushroom fruit body that collected from the first and second harvesting time.
Sintesis dan Analisis Spektra IR, Difraktogram XRD, SEM pada Material Katalis Berbahan Ni/zeolit Alam Teraktivasi dengan Metode Impregnasi Nur Fitri Fatimah; Budi Utami
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 1 No. 1 (2017)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um026v1i12017p035

Abstract

This research is about the synthesis and analysis of IR spectra, XRD difractogram, SEM in the catalyst material made from Ni/zeolite nature is activated by impregnation method. This study is aimed to find out (1) The method of synthesis of catalyst Ni/zeolit with impregnation (2) The characteristics of the catalyst which is formed from the characterization results using SEM, FT-IR, and XRD (3) the optimum ratio of zeolit and Ni in the synthesis of catalyst Ni/zeolit. Synthesis of catalyst Ni/zeolit were done by impregnation. Method with a variety of Ni concentration range 0 %, 5%, and 10%. Characterization of catalyst Ni/zeolit were produced covering the structure morphology and particle size using microgrpahy SEM (Scanning Electron Microscope). While characterization crystallization and the crystal size was performed using diffractogram of XRD (X-Ray Diffraction) and characterization with FT-IR. From this study it can be concluded that : (1) Ni/zeolit catalyst be synthesized from a solution of Ni(NO3)2.6H2O at variance 0%, 5%, and 10% with impregnation method, (2) characteristics of Ni/zeolit catalyst were identified using SEM analysis in the form of uneven surface morphology, the XRD, the peaks of Ni/zeolit cryztallinity and FT-IR

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