25 articles in this issue
Nur Husna Zainal Abidin,Wan Nazihah Wan Ibrahim,Nor Suhaila Mohamad Hanapi,Nor’ashikin Saim
In the present work, MCM-41 coated magnetic particles (Fe3O4-MCM-41) composite was synthesized and employed as an effective adsorbent in magnetic solid phase extraction (MSPE) of three selected organophosphorus pesticides (OPPs) namely chlorpyrifos, diazi... see more
Siti Nurliyana Che Mohamed Hussein,Fatin Syahirah Mohamed Fuad,Marina Ismail
In this study, ZnO nanoparticles were synthesized using a sol-gel method for oil upgrading and wax deposition control. The synthesized ZnO nanoparticles were used to measure viscosity and wax deposition in the heavy crude oil and to investigate the effect... see more
Nurul Ain Safiqah Md Sandollah,Sheikh Ahmad Izaddin Sheikh Mohd Ghazali,Wan Nazihah Wan Ibrahim,Ruhaida Rusmin
The efficiencies of raw (RK) and acid activated (0.5 M AAK) kaolinite clay minerals to remove methylene blue (MB) dyes in aqueous solution were investigated and compared. The 0.5 M AAK was prepared by treatment of RK in dilute 0.5 M HCl aqueous solution u... see more
Muhammad Sulaiman Zubair,Walied Mohamed Alarif,Mohamed Ali Ghandourah,Syariful Anam,Ibrahim Jantan
Benalu batu (Begonia sp.) had been used traditionally as an anticancer medicinal plant by Wana tribe in Morowali, Central Sulawesi, This study aims to evaluate the cytotoxic activity of 2-O-ß-glucopyranosil cucurbitacin D, isolated from the ethyl acetate ... see more
Neneng Siti Silfi Ambarwati,Berna Elya,Amarila Malik,Yuditya Artha,Islamudin Ahmad,Azminah Azminah,Muhammad Hanafi,Hanita Omar
The previous research showed that the fraction C from active extract of Garcinia latissima Miq. fruit was active against Bacillus subtilis. This study aims to isolate and identify the active compound as an antibacterial agent from the fraction C. Fraction... see more
Istikamah Subuki,Mimi Fazzlinda Mohsin,Muhammad Hussain Ismail,Fazira Suriani Mohamed Fadzil
The zircon powder from Zircon Minerals Malaysia is a pure premium grade zircon sand milled 1.5 µm that contain ZrSiO4, ZrO2, HfO2, SiO2, Al2O3, TiO2, and Fe2O3. The monoclinic zirconia powders were synthesized from the zircon sand of Zircon Minerals Malay... see more
Winda Rahmalia,Jean-Francois Fabre,Thamrin Usman,Zéphirin Mouloungui
This study aims to prepare dealuminated metakaolinite which has a high surface area by using NH4OH as an activator. The natural kaolinite sample was treated at 600 °C for 6 h in order to obtain metakaolinite. A dealuminated metakaolinite was then prepared... see more
Vivi Purwandari,Saharman Gea,Basuki Wirjosentono,Agus Haryono,I Putu Mahendra,Yasir Arafat Hutapea
Thermal and electrical conductivity studies of Cyclic Natural Rubber nanocomposite with graphene 1 and 2 phr (G1 and G2) and modified 1 and 2 graphenes (mG1 and mG2) have been carried out. Graphene was activated with cetrimonium bromide (CTAB), was isolat... see more
Serafica Btari Christiyani Kusumaningrum,I Wayan Warmada,Wahyu Wilopo,Endah Retnaningrum
The unique characteristics of sulfurous river sediment located in Ungaran, Indonesia, are a reservoir of novel fungi with manganese bioleaching properties. Fungi are known to produce metabolic organic acids that have a potential for the industrial applica... see more
Erwin Abdul Rahim
This study was aimed to synthesize a series of novel polyacetylenes containing carbamate and eugenol moieties. The polymerization of 1-(3,4-dimethoxyphenyl) propane-2-yl prop-2-ynylcarbamate (1), 1-(3,4-dimethoxyphenyl)propane-2-yl 3-ethynyl phenylcarbama... see more
Hasan Ashari Oramahi,Tsuyoshi Yoshimura,Elvi Rusmiyanto,Kustiati Kustiati
In this study, the Box-Behnken Design (BBD) was employed to investigate the effects of wood particle size, pyrolysis temperature, and pyrolysis time on the production of wood vinegar from Indonesia “bengkirai” wood (Shorea laevis Ridl). Characterization o... see more
Kristian Handoyo Sugiyarto,Isana Supiah Yosephine Louise,Shinta Setya Wilujeng
The complex containing Ni(II)-2,2’-bipyridin (bipy)-trifluoroacetate (TFA) was prepared by direct interaction of the corresponding precursors in an aqueous solution. AAS measurement for metal content, TGA-DTA analysis and electrical conductance suggest th... see more
Widiyastuti Widiyastuti,Mahardika Fahrudin Rois,Heru Setyawan,Siti Machmudah,Diky Anggoro
Lignin as a by-product of the pulping process is less widely used for worth materials. In this study, the utilization of lignin by-product of the soda delignification process of coconut coir converted to the activated carbon by a simple precipitation meth... see more
Nizar Happyana,Elvira Hermawati,Yana Maolana Syah,Euis Holisotan Hakim
In this work, 1H NMR analysis, along with a chemometrics approach, had been applied for investigating metabolite profiles of Indonesian roasted Robusta coffees obtained from Lampung and Aceh. In total, 24 compounds had been successfully detected in the 1H... see more
Nurul Hazirah Aina Hasnan,Najmiddin Yaakob,Muhammad Nadzmi Abu Kassim,Umie Amira Mohd Noh
In this study, epoxy coatings made up from petroleum-based epoxy resin mixed with two different types of palm oils were prepared and compared. The commercial epoxy resin based on diglycidyl ether of bisphenol A (DGEBA) were formulated with epoxidized unri... see more
Diana Vanda Wellia,Wulandari Wulandari,Arifah Mustaqimah,Nurul Pratiwi,Yulia Eka Putri
The tropical bamboo has been widely used in modern society as a potential material for various applications. It is well known that bamboo has low durability due to its hydrophilic properties. To overcome this problem, the superhydrophobic surface on Indon... see more
Zuhair Ali Abdulnabi
The concentration of free and total cyanide in waters was measured by using the colorimetric method through complex formation with pyridine-barbituric acid at the wavelength of 578 nm. Ten stations were selected from water surfaces in the south of Iraq. T... see more
Nor Faeqah Idrus,Robiah Yunus,Zurina Zainal Abidin,Umer Rashid,Norazah Abd Rahman
Pentaerythritol tetraoleate esters synthesized from high oleic palm oil methyl ester (POME) have potential as biolubricant base stock. In the present study, the chemical transesterification of POME and pentaerythritol (PE) using sodium methoxide as a cata... see more
Sophi Damayanti,Nadiyah Athifah Salim Martak,Benny Permana,Adi Suwandi,Rika Hartati,Indra Wibowo
Red bulbs of Eleutherine americana (Aubl.) Merr. ex K. Heyne has been known for its high content of naphthoquinones that have antifungal and antiparasitic activities. In this research, in silico interaction study was performed between 31 compounds reporte... see more
Emilya Faridatul Sulaikhah,Rian Kurniawan,Mokhammad Fajar Pradipta,Wega Trisunaryanti,Akhmad Syoufian
Synthesis of cobalt-doped zirconium titanate (Co-doped ZrTiO4) as a potential photocatalyst with visible-light-response had been conducted. Materials used in this research were titanium tetraisopropoxide (TTIP) as a precursor of TiO2, ZrO2 as another semi... see more
Heri Budi Wibowo,Widhi Cahya Dharmawan,Ratih Sanggra Murti Wibowo,Adi Yulianto
A kinetic study of HTPB synthesis by radical polymerization of butadiene with hydrogen peroxide initiator was conducted using infrared spectroscopy. HTPB conversion was determined based on the conjunction termination rate constant, and all polymerization ... see more
Agnes Dyah Novitasari Lestari,Dwi Siswanta,Ronny Martien,Mudasir Mudasir
This study aims to investigate the synthesis and characterization of ß-carotene encapsulated in the blending matrices of starch (native and hydrolyzed starch)-chitosan/TPP (tripolyphosphate) by examining the effects of starch-to-chitosan weight ratio, ß-c... see more
Dewi Eviane,Dwi Siswanta,Sri Juari Santosa
In this study, we successfully developed gold nanoparticles capped with histidine (His-AuNPs) for Hg2+ detection using trisodium citrate as the reducing agent. The optimum pH for the detection of Hg2+ by His-AuNPs was 12. The addition of Hg2+ to the His-A... see more
Vivitri Dewi Prasasty,Enade Perdana Istyastono
Structure-based virtual screening protocol to identify potent acetylcholinesterase inhibitors was retrospectively validated. The protocol could be employed to examine the potential of designed compounds as novel acetylcholinesterase inhibitors. In a resea... see more
Nurhaslina Che Radzi,Filzah Anati Kasim
Gaharu wood produces an expensive essential oil due to its fragrance and chemical compounds. Normally, the black color wood is used for the extraction of oil because it contains high resin. However, the cost of this resinous wood is very expensive. Theref... see more