18 articles in this issue
Suryadi Budi Utomo,Jumina Jumina,Dwi Siswanta,Mustofa Mustofa,Naresh Kumar
A research has been conducted to synthesize thiomethylated-C-4-methoxyphenylcalix[4]resorcinarene using fennel oil as a starting material. The synthesis was carried out in four steps i.e. (1) oxidation of anethole to yield p-anisaldehyde, (2) HCl-catalyze... see more
Irwan Ginting Suka,Wasinton Simanjuntak
In this study, cellulose prepared from solid waste of cassava industry was functionalized with N-isopropylacrylamide (NIPAAm) using grafting technique with the aid of cerium (IV) as initiator, to obtain temperature responsive polymer. In this research, se... see more
Erizal Erizal,Thamrin Wikanta
Crosslinked PEO hydrogel containing chitosan for wound dressing has been prepared by gamma radiation technique. Chitosan solutions with different concentration (0.5-2% w/v) have been blended with 5% aqueous solution of PEO and irradiated at the doses 20-4... see more
Iip Izul Falah,Triyono Triyono,Catur Atmaji
Kinetics study of chemical reaction is important in producing optimum product, designing a reactor, analyzing a compound, and many other purposes. This work presents the result of study of consecutive pseudo first order reaction between glycine and isoleu... see more
Warsito Warsito,Jumina Jumina,Chairil Anwar,Rurini Retnowati,Ahmad Ghanaim,Suleman Duengo
Enrichment of a-(alpha) linolenic acid (ALA) of basil seed oil, Ocinum basilicum L. can be done by fractional crystalization and crystalization of fatty acid in urea inclusion complexes (UIC) methods. In this research, the ALA of fatty acid of basil ... see more
Ponco Iswanto,Mochammad Chasani,Harjono Harjono,Iqmal Tahir,Muhammad Hanafi,Eva Vaulina YD
Leukemia drug discovery based on calanone compound was conducted in previous research and produced 6 calanone derivatives. Most of them have lower activities against leukemia cell L1210 than pure calanone. A Quantitative Structure-Activity Relationship (Q... see more
Susy Yunita Prabawati,Jumina Jumina,Sri Juari Santosa,Mustofa Mustofa
A study has been conducted to synthesize a novel polypropylcalix[6]arene polymer using p-t-butylphenol as a starting material. It was of interest to investigate the capability of the polymer with a tunnel-like structure, as adsorbent to trap the heavy met... see more
Nafly C. Tiven,Lies Mira Yusiati,Rusman Rusman,Umar Santoso
This research aimed to know the ability of formaldehyde to protect unsaturated fatty acid of CPO on the hydrogenation process by rumen microbes. In this experiment, the in vitro fermentation of rumen fluid was carrying out. It was taken from the rumen-tro... see more
Tri Joko Raharjo,Laily Nurliana,Sabirin Mastjeh
The phospholipids (PL) of pumpkin (Cucurbita moschata (Duch) Poir) seed kernel and their fatty acid composition were investigated. The crude oil was obtained by maceration with isopropanol followed by steps of extraction yielded polar lipids. The quantita... see more
Elfita Elfita,Muharni Muharni,Munawar Munawar,Leni Legasari,Darwati Darwati
The term endophytic refers to a bacteria or a fungi microorganism that colonizes interior organs of plants, but does not have pathogenic effects on its host. In their symbiotic association, the host plant protects and feeds the endophytic, which ";in retu... see more
Nurdin Saidi,Hiroshi Morita,Marc Litaudon,Mat Ropi Mukhtar,Khalijah Awang,A. Hamid A. Hadi
Seven known Benzylisoquinoline alkaloids, Papraline 1, (+)-norcinnamolaurine 2, (+)-codamine 3, (+)-6-methoxy-1-(3'-methoxybenzyl)-N-methyl-7-isoquinolinol 4, (+)-reticuline N-oxide 5, (+)-reticuline 6 and (-)-N-methylisococlaurine 7 were isolated from ba... see more
Suryati Suryati,Hazli Nurdin,Dachriyanus Dachriyanus,Md Nordin Hj Lajis
An antibacterial compound has been isolated from Ficus deltoidea Jack leaves. Based on spectroscopic data (IR, 1H-NMR, 13C NMR 1D and 2D and MS), the structure of this compound was identified as 3ß-hydroksilup-20(29)-en, (lupeol), C30H50O. This compound s... see more
Mohamad Rafi,Eti Rohaeti,Ali Miftahudin,Latifah K. Darusman
Turmeric (Curcuma longa), java turmeric (Curcuma xanthorrhiza) and cassumunar ginger (Zingiber cassumunar) are widely used in traditional Indonesian medicine. These three herbs have relatively similar rhizomes colour so it is difficult to be differentiate... see more
Riyanto Riyanto,Mohamed Rozali Othman,Jumat Salimon
The morphological characteristics and electrochemical behavior of nickel metal foil (Ni), nickel-polyvinyl chloride (Ni-PVC) and nickel-cobalt-polyvinyl chloride (Ni-Co-PVC) electrodes in alkaline solution has been investigated. The morphological characte... see more
Simon Sembiring
In this research, borosilicate ceramics were produced from rice husk silica. Preparation of borosilicate ceramics was conducted by mixing boron oxide sol from borax with silica sol extracted from rice husk. The boron oxide was produced by hydrolysis of bo... see more
Lukman Atmaja,Hamzah Fansuri,Anggaria Maharani
Aluminosilicate, alkaline solution and fly ash from a power plant have been used to synthesize geopolymer at ambient temperature. SiO2/Al2O3 mole ratio of the starting materials was varied by the addition of pure, insoluble corundum and quartz. The geopol... see more
Sunardi Sunardi,Utami Irawati,Yateman Arryanto,Sutarno Sutarno
Synthesis of surfactant modified kaolin from natural kaolin from Tatakan, Tapin, South Kalimantan and its application for carrier material of gibberellic acid have been conducted. The kaolin modification was done by surface engineering using cationic surf... see more
Wasinton Simanjuntak,Irwan Ginting,Kamisah D. Pandiangan
In the present study, electrocoagulation method was employed to remove natural organic matter from brackish water. This study explores the potential of brackish water as a source of potable water. Two electrochemical variables, potential and contact time,... see more