25 articles in this issue
Zaki Fahmi,Mudasir Mudasir,Abdul Rohman
The adulteration of high priced oils such as patchouli oil with lower price ones is motivated to gain the economical profits. The aim of this study was to use FTIR spectroscopy combined with chemometrics for the authentication of patchouli oil (PaO) in th... see more
Hartiwi Diastuti,Mochammad Chasani,Suwandri Suwandri
Benzyl benzoate and crotepoxide are the major components of Kaempferia rotunda L. rhizome. However, the bioactivity study of benzyl benzoate and crotepoxide as the antibacterial activity were still limited. Therefore, the antibacterial activity of benzyl ... see more
Duha Hussien Attol,Hayder Hamied Mihsen
Rice husk ash (RHA) was used to prepare sodium silicate, which in turn was functionalized with 3-(chloropropyl)triethoxysilane employing the sol-gel technique to form RHACCl. Chloro group in RHACCl was replaced with iodo group forming RHACI. Ethylenediami... see more
Rika Wijiyanti,Triyanda Gunawan,Noor Shawal Nasri,Zulhairun Abdul Karim,Ahmad Fauzi Ismail,Nurul Widiastuti
The hydrogen adsorption, kinetic and thermodynamic of adsorption onto the zeolite templated carbon (ZTC) were examined at the temperature range of 30-50 °C and ambient pressure. The ZTC was prepared from zeolite-Y template and sucrose carbon precursor by ... see more
Farhan Azhwin Maulana,Laksmi Ambarsari,Setyanto Tri Wahyudi
Glucose oxidase from Aspergillus niger IPBCC.08.610 (GOD_IPBCC) is a locally sourced flavoenzyme from Indonesia that can potentially be developed in a variety of industrial processes. Although this enzyme has a high activity in catalyzing the redox reacti... see more
Putri Luthfiana Sari,Hanik Munawaroh,Sayekti Wahyuningsih,Ari Handono Ramelan
Al-doped ZnO (AZO) nanodrums were synthesized using hydrothermal method at 80 °C for 20 h using precursor Zn(CH3COO)2·2H2O and Al(OH)(CH3COO)2 as a dopant by varying the addition of Al concentrations in the range of 0, 1, 5, 10, 15, and 20 mM. The variati... see more
Muhammad Siddiq Maarop,Fatin Nur Ain Abdul Rashid,Mohd Fazli Mohammat,Zurina Shaameri,Saiful Azmi Johari,Mazurah Mohamed Isa,Anis Low Muhammad Low
A library of some novel classes of pyrano[2,3-c]pyrazole-3-carboxylates was synthesized by employing uncatalyzed domino four-component reaction using diethyloxaloacetate, hydrazine hydrate, aldehydes and malononitrile in refluxing of ethanol-acetic acid s... see more
Olayinka Oyewale Ajani,Olaoluwasubomi Eneyeme Joseph,King Tamunodikibugerere Iyaye,Natasha October,Damilola Victoria Aderohunmu,Shade John Olorunshola,Oluwatosin Yemisi Audu
A series of functionalized 2-substituted benzimidazole motifs was designed and successfully synthesized via thermal cyclization of 1,2-diaminobenzene on COOH end of L- leucine to achieve benzimidazole derivatives 6 as the essential precursor. The coupling... see more
Marwah Noori Mohammed,Kamal Yusoh,Jun Haslinda binti Haji Sharifuddin
Poly(N-vinylcaprolactam) (PNVCL) offers superior characteristics as a thermoresponsive polymer for various potential applications. An attractive procedure, namely in-situ polymerization, was used to prepare NVCL/clay nanocomposite in different clay ratios... see more
Mohd Najib Razali,Syarifah Nur Ezatie Mohd Isa,Noor Adilah Md Salehan,Musfafikri Musa,Mohd Aizudin Abd Aziz,Abdurahman Hamid Nour,Rosli Mohd Yunus
The aim of this research was to characterize and analyze the formulation of emulsified modification bitumen (EMB) as well as the industrial wastes used in the formulation. Bitumen being a non-renewable product with severe environmental issues arising late... see more
Norliza Dzakaria,Maratun Najiha Abu Tahari,Fairous Salleh,Alinda Samsuri,Masitah Abdul Halim Azizi,Tengku Shafazila Tengku Saharuddin,Muhammad Rahimi Yusop,Wan Nor Roslam Wan Isahak,Mohamed Wahab Mohamed Hisham,Mohd Ambar Yarmo
The reduction behavior of nickel oxide (NiO) and zirconia (Zr) doped NiO (Zr/NiO) was investigated using temperature programmed reduction (TPR) using carbon monoxide (CO) as a reductant and then characterized using X-ray diffraction (XRD), nitrogen absorp... see more
Suhanna Natalya Mohd Suhaimy,Luqman Chuah Abdullah
In recent years, environmental protection has gained a major concern. In line with the rapid growth of various industries, high amount of effluent has been generated and discharged to the environment. One of the concerns is the presence of synthetic dye i... see more
Agus Subagio,Erma Prihastanti,Ngadiwiyana Ngadiwiyana
Multi-walled carbon nanotubes (MWCNTs) are one of the nanomaterials that can be applied to agriculture. This work investigates the beneficial effects of MWCNT function on mustard plants. In this study, the material of MWCNTs is functionalized with nitric ... see more
Ani Iryani,Hadi Nur,Mardi Santoso,Djoko Hartanto
Rhodamine B (RB) and Methylene Blue (MB) dyes adsorption using adsorbent ZSM-5 synthesized from Bangka kaolin were investigated in this study. The effects of the initial concentration, contact time and temperature on the adsorption process were also analy... see more
Ildefonso Baldiris-Navarro,Juan Carlos Acosta-Jimenez,Angel Dario Gonzalez-Delgado,Alvaro Realpe-Jimenez,Juan Gabriel Fajardo-Cuadro
Coastal lagoons are one of the most threatened ecosystems in the world, because of population growth, habitat destruction, pollution, wastewater, overexploitation and invasive species which are the main causes of their degradation. The objective of this p... see more
Chanchal Chayan Paul,Md. Abu Shamim Khan,Probir Kumar Sarkar,Abdul Hakim,Md. Waliullah,Bablu Hira Mandal
Toothpaste is one of the daily essentials, and good quality control practices over it are very important to protect the oral public health from adverse effects. The current study aimed to assess the concentration of fluoride and heavy metals, physicochemi... see more
Taghreed Mohy Al-Deen Musa,Mahmoud Najim Abid Aljibouri,Bayader Fadhil Abbas,Nahid Hasani
The present paper deals with the synthesis of cobalt(II), nickel(II), copper(II) and cadmium(II) complexes with two bidentate ligands, L1 (3-(quinoxaline-2-yl)-coumarin) and L2 (2-methylene-2H-chromene-3-(methyl carbonimidic)thioanhydride). The L1 ligand ... see more
Zobair El Afia,Mohamed Youssef Messous,Mohamed Cherkaoui,Mounia Tahri
The synthesis of TiO2 co-doped by (Ce, Yb) rare earth couple has been realized. This couple of rare earth can convert a high-energy photon to two low energy photons to enhance the energy efficiency of silicon solar cells. The undoped, 2% Ce doped- and (2%... see more
Dian Susanthy,Sri Juari Santosa,Eko Sri Kunarti
This paper describes the antibacterial performance of silver nanoparticles (AgNPs) which have been synthesized by using p-aminobenzoic acid as reducing and stabilizing agent simultaneously. The silver nitrate with various concentrations was reacted with p... see more
Andriyanto Andriyanto,Wahyu Wilopo,Endah Retnaningrum
This research explored the performance of a fixed-bed anaerobic bioreactor system (FBR) using sulfate-reducing bacteria (SRB) from the sediment of Sikidang Crater in Indonesia. Indonesian natural zeolite was used as an inert medium in this bioreactor syst... see more
Norman Yoshi Haryono,Winarto Haryadi,Tri Joko Raharjo
Bacterial lipase holds an important role as a new source for many industrial catalysts. The investigation and understanding of the lipase-encoding gene become apparent as the key step for generating high-quality lipase as biocatalyst for many chemical rea... see more
Edia Rahayuningsih,Felix Arie Setiawan,Conny Julanda Ayanie,Ambrosius Aditya Antoko,Yosephine Intan Ayuningtyas,Himawan Bayu Petrus
Triggered by the concept of sustainability, the use of natural dyes in batik fabric processing has increased recently. To inhibit fungus growth on batik fabric colored with natural dyes, either clove oil or formaldehyde was added as an antifungal agent. T... see more
Rahmat Basuki
The purpose of this research was to investigate first-year undergraduate chemistry students’ understanding in assigning oxidation number following a case-study course instruction. A list of multiple choice question and interview section was formulated to ... see more
Mohammad Haniff Ahmad,Wan Asma Ibrahim,Jahirah Sazali,Izirwan Izhab,Zulkafli Hassan
Castor oil is an oil derived from castor seed from a plant Ricinus communis. The versatility of castor oil is highly attributed by 12-hydroxy-9-octadecenoic acid (ricinoleic acid) and its functional group. It is an oil that cannot be consumed by a human. ... see more
Nor Adzwa Binti Rosli,Wan Asma Ibrahim,Zulkafli Hassan,Azizul Helmi Bin Sofian
In this study, some approaches have been proposed to establish an alternative and option of brand-new compounds by using green sources that can minimize the environmental threat in the engineering application industry. Tannin, a chemical component extract... see more