30 articles in this issue
Yudha Ramanda,Nuryono Nuryono,Eko Sri Kunarti
This study focuses on the synthesis and application of a Fe3O4/SiO2/TiO2 nanocomposite as a photocatalyst in CO2 indirect reduction. The synthesis was started by preparation of magnetite (Fe3O4) followed by silica (SiO2) coating and titania (TiO2) deposit... see more
Muslem Muslem,Agus Kuncaka,Taffrika Nur Himah,Roto Roto
Char-Fe3O4 Composites have been synthetized through hydrothermal carbonization method and through hydrothermal-pyrolysis carbonization method by using polyvinylchloride as a carbon source. The products were characterized by FTIR, XRD, EDX, and TEM. The pr... see more
Maula Eka Sriyani,Dian Ayu Utami,Mega Susilo Dwike,Eva Maria Widyasari,Muharram Marzuki,Rizky Juwita Sugiharti,Witri Nuraeni
Quercetin is one of the flavonoid groups with antioxidant activity. The objective of this study was to achieve the labeled compound of 131I-quercetin as a radiotracer for diagnosis and cancer therapy with high labeling efficiency and radiochemical purity.... see more
Nurul Atikah Amin Yusof,Nursyamsyila Mat Hadzir,Siti Efliza Ashari,Nor Suhaila Mohamad Hanapi,Rossuriati Dol Hamid
Optimization of the lipase catalyzed enzymatic synthesis of betulinic acid amide in the presence of immobilized lipase, Novozym 435 from Candida antartica as a biocatalyst was studied. Response surface methodology (RSM) and 5-level-4-factor central-compos... see more
Farah Nurlidar,Mime Kobayashi
Incorporation of bone-like hydroxyapatite into bacterial cellulose (BC) is an attractive approach for the fabrication of a bioactive three-dimensional (3D) scaffold for bone tissue regeneration. This study investigates the influence of the succinylation o... see more
Kris Tri Basuki,Niken Siwi Pamungkas
Liquid extraction of Y that containing Dy using bis-2-Ethylhexyl phosphoric acid (D2EHPA) extractant has been conducted. The purpose of this study is to determine the optimum parameter in a separation process that uses membrane emulsion. As the aqueous ph... see more
Tarmizi Taher,Yunita Irianty,Risfidian Mohadi,Muhammad Said,Roy Andreas,Aldes Lesbani
Ca/Al layered double hydroxides (Ca/Al LDH) was synthesized using co-precipitation method following calcination at 800 °C and was intercalated with Keggin ion [a-SiW12O40]4– to form intercalated Ca/Al LDH. Materials were characterized using XRD and FTIR s... see more
Mohamad Shahrul Fizree Idris,Nur Hanis Adila Azhar,Fazira Firdaus,Siti Efliza Ashari,Siti Fairus Mohd Yusoff
Hydrogenated liquid natural rubber (HLNR) was synthesized from liquid natural rubber (LNR) by thermolysis of p-toluenesulfonyl hydrazide (TSH). The HLNR structure was characterized by Fourier-transform infrared (FTIR) and nuclear magnetic resonance (NMR) ... see more
Yuly Kusumawati,Nanik Ismi Oktavianti,Linda Wati Oktavia,Nurul Widiastuti,Lukman Atmaja,Nur Izzati Abu Bakar,Nur Hadi
A preliminary study of the effect of magnesium-doped into betanine-sensitized TiO2 thin layers has been carried out computationally and experimentally. The computational calculation was performed to observe the effect of magnesium on the interaction molec... see more
Ketut Ratnayani,I Ketut Suter,Nyoman Semadi Antara,I Nengah Kencana Putra
During the germination process, seeds can release various types of peptides due to the degradation of storage proteins. Some of these peptides can have biological activity (bioactive peptides). The objective of this study was to determine the ACE inhibito... see more
Chen Son Yue,Wai Lun Hong,Sheri-Ann Shu Wei Tan,Khye Er Loh,Yee Chuan Liew,Rosemary Elizabeth Yap,Zi Yi Chong,Jiong Chen Chai
This study was conducted in order to identify the presence of four synthetic phenolic antioxidants (SPAs): propyl gallate (PG), tert-butylhydroquinone (TBHQ), butylated hydroxyanisole (BHA), and butylated hydroxytoluene (BHT) in various food stuffs that a... see more
Niswati Fathmah Rosyida,Pinandi Sri Pudyani,Akhmad Kharis Nugroho,Ika Dewi Ana,Teguh Ariyanto
This study aims to synthesize simvastatin hydrogel as drug delivery system with surfactant addition for improving solubility of simvastatin. Surfactants used in the study were the zwitterionic amino acid of arginine and nonionic surface-active agent of po... see more
Maria Veronika Purwani,Muzakky Muzakky
The design of chemical reactor can not be separated from the optimization data and reaction kinetics obtained from the experimental measurement. Through the idea of making the dissolution reactor design, the purpose of this research is to obtain optimizat... see more
Faten Hadi Fakhri,Luma Majeed Ahmed
The aim of this manuscript was to modify the ZnS surface by incorporating with CdS photocatalyst. This manner led to depressing the recombination process and increasing the activity. The X-ray Powder Diffraction (XRD) data were proved that the CdS incorpo... see more
Sri Murniasih,Darsono Darsono,Sukirno Sukirno,Saefurrochman Saefurrochman
Volcanic ash contains essential elements to the soil fertility of agricultural land which is important to be investigated. The aim of this study was to determine the distribution pattern of volcanic ash essential elements as a result of volcanic eruption ... see more
Stevin Carolius Angga,Dias Septiana,Suci Amalia,Warsito Warsito,Elvina Dhiaul Iftitah,Akhmad Sabarudin
An enantiomer molecule consisted of the chiral atom has different structure conformations, which exhibit different activities as well. Yet, its separation considerably difficult since ordinary separation could not separate both molecules. One of the popul... see more
Nurlybek Shyrynbekuly Otarbaev,Vladimir Mikhailovich Kapustin,Kazim Sadykovich Nadirov,Gulmira Zhankabylovna Bimbetova,Manap Kurmanbekovich Zhantasov,Rashid Kazimovich Nadirov
Water contained in crude oil, forms so-called water-in-oil emulsions, the presence of which negatively affects the transportation and processing of oil. Demulsifiers are the special mixtures that are used to remove water from emulsions. The present paper ... see more
Nur Ezyan Badrul Hisham,Nor Hanuni Ramli
Recently, the increase in demand for rice has led to the numerous availabilities of rice husks (RH) in Malaysia. RH is being utilized as industrial fuel to generate electricity through incineration process in the boiler. During the incineration process, r... see more
Hartati Hartati,Mardi Santoso,Hadi Nur,Leaw Wai Loon,Hasliza Bahruji,Imroatul Qoniah,Didik Prasetyoko
Hierarchical micro-mesoporous aluminosilicates nanoparticles were synthesized at different of Si/Al ratios and were directly used as a solid acid catalyst for acetalization reaction with propylene glycol. TEM and N2 adsorption analysis of the resulting al... see more
Mohd Zulkifli bin Mohamad Noor,Wong Yi Teng,Sonny Irawan
Nanoparticles have emerged with substantially to the end user and industrial applications. The applications initiated to enhance oil recovery (EOR) and also as alternative solution in increasing the rheological properties of fluids at difference condition... see more
Rahsya Nur Udzaifa Abdul Rahman,Mazni Ismail,Ruwaida Abdul Rasid,Noor Ida Amalina Ahamad Nordin
Food waste (FW) represents a major component of municipal solid waste (MSW) in Malaysia which causes negative impact due to poor waste management. One of a promising strategy to reduce the FW is to convert the FW to energy sources through thermal pre-trea... see more
Thien Hien Tran,Duy Chinh Nguyen,Thuong Nhan Nguyen Phu,Van Thi Thanh Ho,Dai Viet Nguyen Vo,Long Giang Bach,Trinh Duy Nguyen
Microwave-assisted hydro-distillation (MAHD) is preferred to traditional extraction methods due to shorter extraction time, the inability of volatile components to be damaged or decomposed which in turn improve the efficiency and quality of essential oils... see more
Khadijah Husna Abd Hamid,Wan Amnin Wan Yahaya,Neenasha Bebe Mohd Nor,Alyaa Syahierra Ghazali,Siti Kholijah Abdul Mudalip,Norashikin Mat Zain,Maria Pilar Almajano,Nurul Aini Mohd Azman
Semirefined carrageenan (SRC) plasticized with glycerol (G) and incorporated with antioxidants of 0.4% (v/v) of a-tocopherol and Persicaria minor (PM) extract was successfully developed. The objective of this study is to analyze the antioxidant effect of ... see more
Sofiah Hamzah,Norhafiza Ilyana Yatim,Maslinda Alias,Asmadi Ali
Aquaculture plays an important role in providing food and generate high income in many developing countries but the abundance of ammonia discharged from aquaculture wastewater gives the problem to the environment. This study focused on the extraction of h... see more
Radia Yous,Hakima Cherifi,Razika Khalladi
In this work a comparative study of basic and acid magenta sorption on Algerian natural untreated clay was investigated using theoretical models for the following conditions C0(BM) = 200 mg/L, C0(AM) = 150 mg/L, V = 500 mL, CB(BM) = 1g/L, T = 22 °C. Adsor... see more
Emmanuel Onoja,Roswanira Abdul Wahab
Till date, studies that investigated the effect of glutaraldehyde concentration on catalytic efficacy of biocatalyst developed with silica-derived from oil palm leaves (OPL) as support, are unknown. The study presents the preparation of a support consisti... see more
Ali Hussain Yateem
The barrier to internal rotation around the central C2–C3 single bond of a series of (1E)-monosubstituted 1,3-butadienes and (1E,3E)-1-Y-4-X-disubstituted butadienes, with Y=NH2 or OCH3 and X=NO2, CHO, COOH, CN, CF3, Cl or F, were studied at the density f... see more
Hary Sulistyo,Sabariyanto Sabariyanto,Muhammad Noor Ridho Aji,Muhammad Mufti Azis
Synthesize of glycerol carbonate from glycerol and urea is an attractive path as glycerol carbonate has a large potential as a green solvent. The aim of the present study was to develop a kinetic model of glycerol carbonate synthesis with amberlyst-15 res... see more
Nurul Hidayah,Bambang Purwono,Beta Achromi Nurohmah,Harno Dwi Pranowo
Compound of 3,3'-(4-(2-amino-4,5-dimethoxyphenyl)pyridine-2,6-diyl)dianiline (CHP) has been synthesized via three-step synthetic procedure from veratraldehyde as starting material and 4-(4,5-dimethoxy-2-nitrophenyl)-2,6-bis(3-nitrophenyl)pyridine (CHP-1) ... see more
Artania Adnin Tri Suma,Tutik Dwi Wahyuningsih,Mustofa Mustofa
The synthesis of N-phenylpyrazolines 1-5 was performed by the cyclocondensation of phenylhydrazine and appropriate chalcones that have been synthesized from our previous work. All of the compounds were elucidated for their structure using GC-MS, FTIR, 1H,... see more