30 articles in this issue
Jumina Jumina,Dwi Siswanta,Abdul Karim Zulkarnain,Sugeng Triono,Priatmoko Priatmoko,Emmy Yuanita,Nela Fatmasari,Ikhsan Nursalim
Indonesia is rich with essential oils such as anise and clove leave oils. In respect to explore the potential utilization of these resources, it has been conducted the transformation of p-hydroxybenzaldehyde and vanillin (4-hydroxy-3-methoxy benzaldehyde)... see more
Jaka Fajar Fatriansyah,Hanindito Haidar Satrio,Muhammad Joshua Yuriansyah Barmaki,Arbi Irsyad Fikri,Mochamad Chalid
Phase field model has been successfully derived from ordinary metal phase field equation to simulate the behavior of semi-crystalline polymer solidification phenomenon. To obtain the polymer phase field model, a non-conserved phase field equation can be e... see more
Hazim Yahya Al-Gubury,Hajir S. Alteemi,Ali Malik Saad,Rafal R. Al-Shamary
Photocatalytic degradation of brilliant cresyl blue stain has been done by irradiating the solution pigment with a solar light in presence of aluminum oxide. The effect of important reaction has included many parameters such as catalyst mass, the initial ... see more
Hefni Effendi,Romi Seroja,Sigid Hariyadi
Liquid waste of tofu production has a high content of organic matter which can lead to a decrease in water quality. This study was aimed to obtain an optimal combination of duration and waste concentration in tofu liquid waste treatment using Chrysopogon ... see more
Shabarni Gaffar,Dessy Natalia,Toto Subroto,Oo Suprijana,Soetijoso Soemitro
This study assessed the combinations of genetic manipulation; signal peptide modification, gene dosage increment and co-expression of folding component, to increase Saccharomycopsis fibuligera R64 a-amylase (Sfamy) secretion in Pichia pastoris. Sfamy nati... see more
Muhammad Al-Muttaqii,Firman Kurniawansyah,Danawati Hari Prajitno,Achmad Roesyadi
This present study was aimed to investigate the hydrocracking of coconut oil using Ni-Fe/HZSM-5 catalyst in a batch reactor at three reaction temperatures (350, 375, and 400 °C). The Ni-Fe/HZSM-5 catalyst was prepared by using incipient wetness impregnati... see more
Dian Ayu Eka Pitaloka,Sophi Damayanti,Aluicia Anita Artarini,Elin Yulinah Sukandar
The purpose of this study was to analyze the inhibitory action of ursolic acid (UA) as an antitubercular agent by computational docking studies and molecular dynamics simulations. The effect of UA on the cell wall of Mycobacterium tuberculosis (MTB) was e... see more
Ngatijo Ngatijo,Rahmat Basuki,Nuryono Nuryono,Bambang Rusdiarso
Amine-Modified Silica (AMS) and Quaternary Amine-Modified Silica (QAMS) has been synthesized through the sol-gel process for adsorption Au(III) in aqueous solution. The aim of this work was to compare the effect of addition three methyl group of AMS to fo... see more
Abubakar Tuhuloula,Suprapto Suprapto,Ali Altway,Sri Rachmania Juliastuti
Contamination of soil by the activities of exploration, production, and disposal of oil waste into the environment causes serious damage to the environmental ecosystem, the target of processing by the bacteria as a model for remediation of oil contaminate... see more
Kendri Wahyuningsih,Jumeri Jumeri,Wagiman Wagiman
West Nusa Tenggara is a center of sea oyster farming for Pinctada maxima in Indonesia. The calcium carbonate (CaCO3) compounds in the shell are one of the decomposed natural minerals to produce calcium oxide (CaO) compound which is able to be used as an a... see more
Yehezkiel Steven Kurniawan,Mizuki Ryu,Ramachandra Rao Sathuluri,Wataru Iwasaki,Shintaro Morisada,Hidetaka Kawakita,Keisuke Ohto,Masatoshi Maeki,Masaya Miyazaki,Jumina Jumina
In this study, the microreactor system was investigated and compared with the batch-wise system as rapid and effective extractive Pb(II) separation over Fe(III), Cu(II) and Zn(II) with tetraacetic acid calix[4]arene. By using a microreactor system, the Pb... see more
Agustina Sus Andreani,Eko Sri Kunarti,Sri Juari Santosa
The effect of a hydroxyl functional group of the benzoic acid derivative compound, i.e. o-hydroxybenzoic acid, m-hydroxybenzoic acid, and p-hydroxybenzoic acid on the synthesis of AuNPs has been studied. It was revealed that the pH, heating time, the conc... see more
Muhammad Adlim,Fitri Zarlaida,Ibnu Khaldun,Rizka Dewi,Sofyatuddin Karina,Ahmad Fairuz Omar
Stabilizing elemental mercury using elemental sulfur has been a laboratory standard method but the studies in gas system are still growing. This study aims to explore the effect of different type immobilized sulfurs toward the mercury vapor uptake in a mi... see more
Nuryono Nuryono,Nur Mutia Rosiati,Abraham L Rettob,Suyanta Suyanta,Yateman Arryanto
Two novel materials of 2-aminobenzimidiazole (AB) and 1-(o-tolyl)biguanide (TB) modified silicas coated on the iron sand magnetic material (MM@SiO2/AB and MM@SiO2/TB) have been synthesized and were used to adsorb Au(III) from Au/Cu/Ni solution. Silica lay... see more
Agung Pratama,Firman Sebayang,Rumondang Bulan Nasution
Cellulose and chitosan are natural polymers that have been used as biocomposite. The aim of this research is to obtain biofilms from chitosan and oxidized cellulose crosslinks. This research is divided into three steps, i.e., isolation of cellulose from o... see more
Aris Mukimin,Rustiana Yuliasni,Nur Zen,Kukuh Wicaksono,Januar Arif Fatkhurahman,Hanny Vistanty,Rizal Awaludin Malik
Electrodes, as well as microorganisms, are key materials for the development of bioelectrosynthesis cell reactor. Materials used as electrodes should be inert, crystalline in structure with high surface area and porous morphology, enhancing their electroa... see more
Siham Lhimr,Saidati Bouhlassa,Saidati Bouhlassa,Saidati Bouhlassa,Bouchaib Ammary,Bouchaib Ammary,Bouchaib Ammary
In this paper we study the effects of different molar ratio R of Zn2+ to OH– (R= nOH–/nZn(II) of the precursor was investigated by varying the amount of NaOH. Samples have been synthesized by the colloidal method at room temperature using (ZnCl2), citric ... see more
Abdul Jabbar,Mahmood Akhtar,Shaukat Mehmood,Koo Hendrick Kurniawan,Rinda Hedwig,Muhammad Aslam Baig
Laser ablation chemical and spectroscopic studies of Calotropis procera, Chenopodium ambrosioides, and Nerium indicum leaves was performed using 1064 nm Nd: YAG laser in air at different pressure and time delay. These medicinal plant’s leaves are used by ... see more
Imelda Fajriati,Mudasir Mudasir,Endang Tri Wahyuni
The adsorption and photodegradation of cationic and anionic dyes by TiO2-chitosan nanocomposites have been studied. This study investigated the specific surface area, pores volume, pores size of TiO2-Chitosan nanocomposite, and determination kinetics of t... see more
Rian Kurniawan,Sri Sudiono,Wega Trisunaryanti,Akhmad Syoufian
Synthesis and properties of iron-doped zirconium titanate (ZrTiO4) as a potential visible-light-responsive photocatalyst had been conducted. Various iron dopant concentration and calcination temperature were investigated toward the properties of Fe-doped ... see more
Herlina Rasyid,Bambang Purwono,Thomas S Hofer,Harno Dwi Pranowo
Lung cancer was a second common cancer case due to the high cigarette smoking activity both in men and women. One of protein receptor which plays an important role in the growth of the tumor is Epidermal Growth Factor Receptor (EGFR). EGFR protein is the ... see more
Siti Nor Amira Rosli,Rohaida Che Man,Nasratun Masngut
Culture conditions including initial pH media, incubation period, inoculum size, type of carbon source, type of nitrogen source and its concentration, which affect xylanase production were screened via the one-factor-at-a-time approach. The bacteria used ... see more
Hesham Hussein Rassem,Abdurahman Hamid Nour,Rosli Mohammad Yunus,Yasmeen Hafiz Zaki,Hybat Salih Mohamed Abdlrhman
Supercritical fluid extraction (SFE) is an innovation that permits extraction of an extensive variety of different chemical composition from the plant grids. Extraction of essential oil from Jasmine flower was tentatively carried out using the supercritic... see more
Nguyen Thi Thuong,Nguyen Thi Tuyet Nhi,Vo Thi Cam Nhung,Hoang Ngoc Bich,Bui Thi Phuong Quynh,Long Giang Bach,Nguyen Duy Trinh
A number of harmful effects on the ecosystem, the life of humankind, and living species caused by dye-contaminated wastewater have urged the development for an efficient and cost-efficient treatment method for colored effluents. The cellulose-based adsorb... see more
Afan Hamzah,Lidya Lorenta Sitompul,Irma Nurhanifah Fenda Putri,Soeprijanto Soeprijanto,Arief Widjaja
The effectivity of employing two types of cellulases from Aspergillus niger and Trichoderma resei covalently immobilized on chitosan microparticle was investigated. Reducing sugar from CMC yielded by immobilized cellulase from T. resei alone and A. niger ... see more
Noorhafiza Yahya,Zatul Iffah Mohd Arshad,Siti Kholijah Abdul Mudalip,Siti Zubaidah Sulaiman,Rohaida Che Man,Shalyda Md Shaarani,Mohd Hairul Ab. Rahim
In this study, the comparison of four extraction methods for protease from the leaves of Syzygium polyanthum was evaluated. The methods include sodium phosphate buffer, 1-methyl-8-oxyquinolinium betaine (QB) solvent based extraction, hydrogen-bond accepto... see more
Oluwaseun Ruth Alara,Abdurahman Hamid Nour,Siti Kholijah binti Abdul Mudalip
Microwave-assisted extraction (MAE) of phenolic compounds from Chromolaena odorata leaves was investigated using one-factor-at-a-time (OFAT) and two-level factorial design. The MAE parameters studied were irradiation time (A: 1–5 min); microwave power lev... see more
Wan Nadja Julika,Azilah Ajit,Ahmad Ziad Sulaiman,Aishath Naila
The growing demand for honey in the market has led to the occurrence of the tampering honey with foreign substances and increases the production of artificial honey. Due to this concern, this study works on the physicochemical and microbial characterizati... see more
Nunung Yuniarti,Sudi Mungkasi,Sri Hartati Yuliani,Enade Perdana Istyastono
Employing ensemble Protein-Ligand Interaction Fingerprints (ensPLIF) as descriptors in post retrospective Structure-Based Virtual Screening (SBVS) campaigns Quantitative Structure-Activity Relationship (QSAR) analysis has been proven to significantly incr... see more
Rolan Rusli,Bela Apriliana Ningsih,Agung Rahmadani,Lizma Febrina,Vina Maulidya,Jaka Fadraersada
Ficus variegata Blume is specific plant of east Kalimantan. Flavonoid compound of Ficus variegata Blume was isolated by vacuum liquid and column chromatography, with previously extracted by maceration method using n-hexane and methanol, and fractination u... see more