15 articles in this issue
Imelda Fajriati,Mudasir Mudasir,Endang Tri Wahyuni
The photocatalytic decolorization of methyl orange (MO) by TiO2-chitosan nanocomposite has been studied. This study was started by synthesizing TiO2-chitosan nanocomposites using sol-gel method with various concentrations of Titanium(IV) isopropoxide (TTI... see more
Eko Sugiharto,Taufik Abdillah Natsir,Abdul Rozaq
Air quality simulation has been performed for additional capacity of Banten 1 x 600 MW Coal Fired Power Plant toward air quality degradation in its surrounding environment. The simulation was based on pollutant gas dispersion calculated using Gaussian Plu... see more
Harry Budiman,Oman Zuas
The adsorption capacity of AO-10 from aqueous solution onto CeO2-NPs was investigated under various reaction parameters. Batch mode experiments were conducted to assess the potential of the CeO2-NPs as adsorbent for the removal of AO-10 dye from aqueous s... see more
Wasinton Simanjuntak,Heri Satria,Nurul Utami
In this study, acid hydrolysis of cassava solid waste under ultrasound irradiation for reducing sugar production was studied. A series of experiments was carried out under a 40 kHz ultrasound irradiation, with the main purpose to examine the effect of pHs... see more
Foliatini Foliatini,Yoki Yulizar,Mas Ayu Elita Hafizah
Stability of Au/alginate nanocomposite was theoretically evaluated by computing various interactions energy which contributes in the system, including attraction and repulsion interaction. The results revealed that both polymer and electrostatic charges p... see more
Erizal Erizal,Dian Pribadi Perkasa,Basril Abbas,Sudirman Sudirman,Sulistioso G.S.
Fast swelling hydrogels were synthesized from the mixture of acrylamide (AAM)-acrylic acid (AA)-starch (15:5:1 w/v) solution by radiation crosslinking with varying irradiation doses (7.5-12.5 kGy) at room temperature. The copolymers were characterizated b... see more
Tutik Setianingsih,Indriana Kartini,Yateman Arryanto
Mesoporous carbon was prepared from fructose using zinc borosilicate (ZBS) activator. The synthesis involves caramelization and carbonization processes. The effect of both process temperature toward porosity and functional group of carbon surface are inve... see more
Ambyah Suliwarno
The aim of this research is to explore the possibility of methylcellulose polymer to be used as wound dressing material prepared using electron beam technique. The methylcellulose paste solution with various of molecular weight (SM-4, SM-100, SM-400, SM-4... see more
Dasril Basir,Julinar Julinar,Eva Agustriana,Budi Untari
An interesting natural product chemistry aspect of Fragraea fragrans is that their fruits are richness with ursolic acid and its isomer oleanolic acid (3.05% of dried powder). As our continuous work on these inseparable structural isomeric triterpenes, th... see more
Sri Hartati,I Ketut Triyono,Sri Handayani
In search of bioactive anti-cancer compounds from natural products has been found isobractatin from n-hexane extract of Garcinia eugenifolia. Isolation was done through the stages of maceration and column chromatography. Elucidation of the structure was a... see more
Atmanto Heru Wibowo,Ninis Makhnunah,Deny Irawati,Candra Purnawan,Nanik Dwi Nurhayati,Henning Storz
Polybutylene itaconate (PBI) for modification with divinyl benzene (DVB) and glycerol has been synthesized at 180 °C for 3 h via polycondensation of itaconic acid (IA) and butanediols using catalyst of Ti(OBu)4. Modification on PBI was done with addition ... see more
Muharni Muharni,Fitrya Fitrya,Milanti Okta Ruliza,Dwi Anjar Susanti,Elfita Elfita
Two compounds from cultivation of the endophytic fungi Penicillium sp of leaves of kunyit putih (Curcuma zedoaria have been isolated. The endophytic fungus was cultivated on 5 L of Potatos Dextrose Broth (PDB) medium at room temperature (no shaking) for 3... see more
Daimon Syukri,Djaswir Darwis,Adlis Santoni
The anthocyanins in Ficus padana were extracted and identified by using high-performance liquid chromatography/diode array detection and electrospray ionization/mass spectrometry (HPLC-DAD-ESI-MS). The individual anthocyanins were identified by comparing ... see more
Rizna Triana Dewi,Sanro Tachibana,Puspa Dewi,L.B.S. Kardono,Muhammad Ilyas
This study aims to search for the active components from Aspergillus terreus LS07 which isolated from an Indonesian soil. Bioassay-guided fractionations of the ethyl acetate (EtOAc) extract against a-glucosidase and DPPH free radical to give four isolated... see more
Fahimah Martak,Djulia Onggo,Ismunandar Ismunandar,Agung Nugroho
Polymeric complex [Fe(picolinate)3][MnNi(oxalate)3].CH3OH has been successfully synthesized using H-tube technique. The chemical composition of the synthesized product was determined by Elemental Analysis and Atomic Absorption Spectrometry. Infrared spect... see more