25 articles in this issue
Nasruddin Nasruddin,Tri Susanto
This research aims to study the mechanical properties of natural rubber composites with nitrile butadiene rubber and ethylene propylene diene monomer rubber. Composite fillers consisted of kaolin, and softener using used cooking oil. The study was carried... see more
Yahdiana Harahap,Anja Tamabri,Vicha Vicha,Herman Suryadi,Sunarsih Sunarsih,Callista Andinie Mulyadi
In the past years, Esomeprazole (EMP) was analyzed in human plasma samples, which still has stability issues; thus, the new biosampling technique known as Dried Blood Spot (DBS) might solve the issue. This research aims to evaluate the incurred sample sta... see more
Nurzaimah Zaini @ Othman,Nor Suhaila Mohamad Hanapi,Nor’ashikin Saim,Wan Nazihah Wan Ibrahim,Ahmad Lutfi Anis
A rapid and effective method is developed for selective determination of five selected acidic drugs (salicylic acid, naproxen, diclofenac, ibuprofen and mefenamic acid) in water samples by using online solid phase extraction (Online-SPE) prior to liquid c... see more
Santiyo Wibowo,Lisna Efiyanti,Gustan Pari
The world’s potency of fossil-derived petroleum fuels has declined steadily, while its consumption continues to rise ominously. Therefore, several countries have started to develop renewable fuels like bio-oil from biomass. Relevantly, the aim of this res... see more
Nur Imanina Abdullah Thaidi,Hanapi Mat Jusoh,Ahmad Badruddin Ghazali,Deny Susanti,Normah Haron
Anacardium occidentale Linn. (A. occidentale L.) leaves possess bioactive polyphenols which are associated with antidiabetic potency for the management of type 2 diabetes mellitus (T2DM). In this study, free, soluble ester, and insoluble-bound phenolic fr... see more
Iip Izul Falah,Mokhammad Fajar Pradipta,Alvan Luthfi Rinaldi,Wega Trisunaryanti
Synthesis of 1,1-dibutoxybutane from the single reagent of n-butanol using Cr/Activated Carbon (Cr/AC) as a catalyst has been done. The aims of this research were to evaluate the effect of temperature, amount of catalyst, and alcohol flow rate towards the... see more
Wilmar Maarisit,Misran Lawani
Medicinal plants have become important sources of natural products, which have been used in the development of therapeutic agents. Four new coumarins (1-4) have been isolated together with five known metabolites (5-9) from the medicinal plant T. asiatica.... see more
Gadang Priyotomo,Lutviasari Nuraini,Siska Prifiharni,Ahmad Royani,Sundjono Sundjono,Hadi Gunawan,Meng Zheng
The investigation of corrosion for carbon steel and galvanized steel has been conducted in the marine atmosphere of Eretan and Ciwaringin Districts, West Java Province. The exposure time of the field test was up to 200 days, and their corrosion rates are ... see more
Lestyo Wulandari,Bayu Dwi Permana,Nia Kristiningrum
Flavonoid is phenolic compounds consisting of fifteen carbon atoms and is commonly found in plants. Infrared (IR) spectroscopy combined with chemometrics, has been developed for a simple analysis of flavonoid in the medicinal plant leaves powder. IR spect... see more
Almie Amira Munaras Khan,Norashikin Saim,Rossuriati Dol Hamid,Rozita Osman,Siti Raihan Zakaria
Online solid-phase extraction-liquid chromatography (online SPE-LC) with diode array detector (DAD) was used to obtain the chromatographic fingerprint of bioactive compounds of pineapple (Ananas comosus L.). The extracts from 40 samples of three different... see more
Meri Suhartini,Engela Evy Ernawati,Anisa Roshanova,Haryono Haryono,June Mellawati
Cellulose acetate blend membranes in this study synthesized from cellulose acetate (CA) of rice husk and NaA zeolites (Z) with N,N’-Methylene bis acrylamide (MBA) as cross-linker agent and gamma-rays from cobalt-60 source as a reaction initiator. Applicat... see more
Muhammad Arba,Malindo Sufriadin,Daryono Hadi Tjahjono
Phosphatidylinositol 3-kinase d (PI3Kd) is a validated drug target for the treatment of cancer. The present study aims to search for new inhibitors of PI3Kd by employing pharmacophore modelling using LigandScout Advanced 4.3 software. The three hydrogen b... see more
Esraa Raafid,Muneer A. Al-Da’amy,Salih Hadi Kadhim
The sensitive, accurate and rapid spectrophotometric method that can be used for determination of Cu(II) in the analytical samples using a new chromogenic reagent azo-Schiff base 1-((4-(1-(2-hydroxyphenylimino)ethyl)-phenyl)diazenyl) naphthalene-2-ol (HPE... see more
Maya Tri Hapsari,Wega Trisunaryanti,Iip Izul Falah,Media Laila Permata
The catalytic activity of Co and Pd loaded on mordenite (MOR) was evaluated in the hydrotreatment of cashew nut shell liquid (CNSL) into biofuel. Metals were loaded into MOR as support via wet impregnation process. The Co content was varied as 2, 4, and 6... see more
Nguyen Thi Hong Anh,Tran Thanh Phuc,Tran Nguyen Minh An,Pho Quoc Hue,Nguyen Van Cuong
Wastewater from industries has been a serious issue that both manufactures and authorities raise concerns since it brings tremendous demerits to the surrounding environment and human well-being. Therefore, an appropriate treatment method should be applied... see more
Iman Rahayu,Achmad Zainuddin,Sunit Hendrana
A common graft copolymerization method usually results in a low degree of grafting due to its poor inter-component interactions. A monomer microencapsulation method should be useful to enhance the current graft copolymerization technique. The maleic anhyd... see more
Margaretha Aditya Kurnia Purnaningtyas,Sri Sudiono,Dwi Siswanta
The activated carbon-chitosan-alginate (KKA) beads powder was synthesized to form an adsorbent for the cationic dyes, methylene blue (MB) and methyl violet 2B (MV 2B). The aims of this research were to determine the optimum composition of KKA beads powder... see more
Suratno Suratno,Rachma Puspitasari,Zahriza Purnadayanti,Novita Sandra
The concentration of nineteen metals (Hg, As, Cd, Co, Cr, Cu, Fe, Li, Mg, Mn, Mo, Ni, Pb, Se, Sr, Ti, Tl, V, and Zn) were determined in muscle tissues and digestive contents of Periglypta reticulata (Kerang Geton), collected from Lancang Island part of Se... see more
Ahmed Ali Alkarimi,Kevin Welham
Solid-phase extraction technique is considered as a vital tool in a pre-treatment of different samples. Therefore, it was used as a beneficial and alternative extraction method over the liquid–liquid extraction in diverse applications such as food, enviro... see more
Azal Shakir Waheeb,Hassan Abbas Habeeb Alshamsi,Mohammed Kassim Al-Hussainawy,Haider Radhi Saud
In the present study, the Myristica fragrans shells (MFS) was used as low-cost bio adsorbent for the removal of Rose Bengal (RB) dye from aqueous solutions. The characteristics of MFS powder were studied before and after adsorption using different techniq... see more
Manal Mohamed Talaat El-Saidi,Ahmed Ali El-Sayed,Erik Bjerregaard Pedersen,Mohamed Abdelhamid Tantawy,Nadia Ragab Mohamed,Wafaa Ahmed Gad
New compounds 5 and 9 using DNA bases e.g. Adenine 1 and Guanine 6 derivatives have been synthesized. The use of simple methods to synthesize compounds 5 and 9 were done using pyrimidine as an alternative DNA base ring. Another design to synthesize new si... see more
Arum Patriati,Nadi Suparno,Grace Tjungirai Sulungbudi,Mujamilah Mujamilah,Edy Giri Rachman Putra
Apoferritin is a complex protein potential for drug delivery application. The advantage of apoferritin lies in its core-shell structure, its nano size, and its pH-sensitivity. This study was aimed to characterize the structure of apoferritin due to the pH... see more
Florentinus Dika Octa Riswanto,Alni Desra,Rinjani Mustika Sari,Valentino Thomas,Abdul Rohman,Suwidjiyo Pramono,Sudibyo Martono
Soy milk, one of the soybean products, become more popular in recent years due to its benefit for human health. Biological activities of soybean products have been widely studied according to the presence of isoflavone aglycones content, including geniste... see more
Boonsong Wungsintaweekul,Kayoko Abe,Rintaro Koga,Yoshinori Katakura,Kohei Torikai
Searching biologically active compounds has been one of the major duties of organic chemists. We previously constructed a library of synthetic 12-arylbenzoacridines and found estrogenic and anti-estrogenic agents. With taking the shot-gun approach into co... see more
Yuyun Irmawati,Deni Shidqi Khaerudini,Indriyati Indriyati,Mardiyati Mardiyati,Rike Yudianti
The degree of carbon nanotube (CNT) dispersion in an ink solution plays a critical role in the performance of CNT based devices. This is a challenging task in the CNT utilization due to strong van der Waals interaction affecting the CNT bundles. A good di... see more