16 articles in this issue
Muhammad Fajri Romadhan,Nurgaha Edhi Suyatma,Fahim Muchammad Taqi
The aim of this study was to synthesize and characterize Zinc oxide nanoparticles (ZnO-NPs) prepared by precipitation method. Zinc nitrate and sodium hydroxide was used as starting materials with biopolymer pectin as capping agent. ZnO-NPs were synthesize... see more
Asep Bayu Dani Nandiyanto,Heli Siti Halimatul Munawaroh,Tedi Kurniawan,Ahmad Mudzakir
The purpose of this study was to investigate influences of temperature on the conversion of ammonium tungstate pentahydrate (ATP) powder to tungsten trioxide (WO3) particles with controllable sizes, crystallinities, and physicochemical properties. In this... see more
Nuryono Nuryono,Mighfar Syukur,Agus Kuncaka,Satya Candra Wibawa Sakti
Synthesis of Fe3O4/SiO2 modified with N-(2-aminoethyl)-3-aminopropyl group (Fe3O4/SiO2/ED) via coating method and its application for adsorption-desorption of anionic gold in aqueous solution have been conducted. The synthesized product was characterized ... see more
Yulius Dala Ngapa,Sri Sugiarti,Zaenal Abidin
A synthetic zeolite was produced from natural zeolite from Ende-Nusa Tenggara Timur (NTT) by hydrothermal method. This study aims to produce synthetic zeolite from Ende natural zeolite to remove cation dye through the adsorption process. Temperature of cr... see more
Retno Ariadi Lusiana,Dwi Siswanta,Mudasir Mudasir
Preparation of membrane using crosslinking reaction between chitosan and citric acid showed that functional group modification increased the number of active carrier groups which lead to better transport capacity of the membrane. In addition, the substitu... see more
Taslim Ersam,Sri Fatmawati,Dini Nur Fauzia
New Prenylated stilbene derivatives, 3-hydroxy-4-prenyl-5-methoxy-stilbene acid (1) and 5,4'-dihydroxy-3-methoxy-2-prenyl-stilbene (2) had been isolated from methanol extract of Cajanus cajan (L.) Millsp. (Pigeon pea), a member of family fabaceae. The aim... see more
Yenny Febriani Yun,Faizal Hermanto,Lilis Siti Aisyah,Tri Reksa Saputra,Arif Rahman Hakim,Ade Kania Ningsih,Tati Herlina,Euis Julaeha,Achmad Zainuddin,Unang Supratman
Various species of Kalanchoe plants have been widely used as raw materials in traditional medicines. This study was the continuation of the researches on secondary metabolites from Indonesia Kalanchoe plants, focused on Kalanchoe blossfeldiana. Fresh K. b... see more
Askal Maimulyanti,Anton Restu Prihadi,Iwan Safrudin
Acmella uliginosa (Sw.) Cass is widely used in traditional medicine and used in the treatment of many diseases. Extraction of component in leaves of Acmella uliginosa used methanol, ethyl acetate and n-hexane solvent. The percentage yield of extract from ... see more
Aldes Lesbani,Fatmawati Fatmawati,Risfidian Mohadi,Najma Annuria Fithri,Dedi Rohendi
Oxidation of cyclohexane to cyclohexanol and cyclohexanone was carried out using H4[a-SiW12O40]/TiO2 as catalyst. In the first experiment, catalyst H4[a-SiW12O40]/TiO2 was synthesized and characterized using FTIR spectroscopy and X-Ray analysis. In the se... see more
Kendri Wahyuningsih,Evi Savitri Iriani,Farah Fahma
Cellulose from pineapple leaf fibers as one of the natural polymer which has biodegradable property in a nanometer’s scale, can be formed as a filler in composite of Poly(vinyl) Alcohol/PVA is expected to increase the physical, thermal, and barrier ... see more
Yandi Syukri,Ronny Martien,Endang Lukitaningsih,Agung Endro Nugroho
This research was aimed to quantification of andrographolide isolated from A. paniculata Ness found in traditional market in Yogyakarta using validated HPLC to obtain high level content of andrographolide. The extraction of andrographolide from A. panicul... see more
Ilim Ilim,Alan Jefferson,Wasinton Simanjuntak,Marc Jeannin,Yana Maolana Syah,Bunbun Bundjali,Buchari Buchari
In this work, the oligomer of 4-vinylpyridine designated as O(4-VP) was synthesized by hydrogen peroxide initiated chain growth polymerization and characterized in terms of molecular weight and structure by matrix assisted laser desorption ionization time... see more
Suprapto Suprapto,Tikha Reskiani Fauziah,Meiske S Sangi,Titie Prapti Oetami,Imroatul Qoniah,Didik Prasetyoko
CaO catalysts were synthesized from limestone by thermal decomposition and coprecipitation methods. The CaO and MgO reference catalysts were also synthesized for comparison. The catalysts were characterized by X-ray diffractometer (XRD) and the analysis r... see more
Komar Sutriah,Zainal Alim Mas’ud,Mohammad Khotib,Denar Zuliandanu
Zinc bis-(dipalmithyl dithiophosphate) (ZDTP16) is one product variant of zinc dialkyl dithiophosphate (ZDTP)-fatty acid based having function as corrosion inhibitor. By using 3% of effective dose for the application, its effectiveness of ZDTP16 corrosion... see more
Rini Dwiastuti,Muhammad Radifar,Marchaban Marchaban,Sri Noegrohati,Enade Perdana Istyastono
Soy lecithin is a phospholipid often used in liposome formulations. Determination of water and phospholipid composition is one of the problems in the liposome formulation. This study is using molecular dynamics simulation and empirical observation in prod... see more
Maulidan Firdaus,Nestri Handayani,Lina Tri Marfu’ah
A simple, energy efficient, and relatively quick synthetic procedure for the reduction of aldehydes under ultrasonic irradiation is reported. Satisfactorily isolated yields (71-96%) were achieved confirming that the preparation of alcohol by aldehyde redu... see more