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All published articles 484

Effect of Activity Coefficient of Polyvalent Ionic Salt Solution on Demulsification of Soy Lecithin Based Oil-in-Water Emulsion

Pragasam Antony, Shivanand S. Bhat, Preeti N. Tallur & Vinayak M. Naik · Asian Journal of Chemical Sciences · 2019

Lecithin based Oil-in-Water (O/W) emulsion finds a lot of applications in food and cosmetic industries. The stability of O/W emulsion depends on properties of the emulsifying solution and the ionic impurities present. The present experiment well explained the role of polyvalent L...

Open access Research Article 10.9734/ajocs/2019/v6i118988

Synthesis, Characterization and Antimicrobial Activity of Metal Complexes of N-(4-methoxybenzylidene) Isonicotinohydrazone Schiff Base

Md. Sajjad Hossain, Farzana Khanm Camellia, Nayon Uddin, Md. Kudrat-E-Zahan, Laila Arjuman Banu & Md. Masuqul Haque · Asian Journal of Chemical Sciences · 2019

Two complexes of Cu(II) and Ni(II) with the ligand N- (4-methoxybenzylidene) isonicotinohydrazide, having the formula [M(La)2]2+ (M = Cu(II) and Ni(II)) were synthesized. The ligand was synthesized by the condensation of isonicotinic acid hydrazide (isoniazid) with 4- methoxybenz...

Open access Research Article 10.9734/ajocs/2019/v6i118987

Extraction and Determination of Caffeine Concentrations in Coffee, Tea and Chocolate Milk Available in Saudi Markets

Sarra Talab · Asian Journal of Chemical Sciences · 2019

In this work a study was performed using UV/Vis spectrophotometer to determine the concentrations of caffeine in coffee, tea and chocolate milk available in local market in Riyadh, Saudi Arabia. Quantitative analysis was carried using dichloromethane as extracting solvent. Result...

Open access Research Article 10.9734/ajocs/2019/v6i118986

Remediation of Arsenic in Water Using Unique Ashed Biomass Material

Kenneth L. Dorris, Shyam S. Shukla & Mohammad Musaddaq · Asian Journal of Chemical Sciences · 2019

The contamination of the world’s water supply due to various contaminants has caused the clean water supply to shrink around the globe. The problem is not only an issue with developing nations; in fact, many developed countries are facing the same turmoil. With the globalization,...

Open access Research Article 10.9734/ajocs/2018/v5i318984

Endothelial Nitric Oxide Synthase (eNOS) Gene Polymorphism (G894T) as a Risk Factor for obesity in the Egyptian Population

Rizk Elbaz, Lamiaa A. A. Barakat, Ahmed Nageb & Hewaydah El Sayed · Asian Journal of Chemical Sciences · 2019

Background and Objective: Endothelial nitric oxide synthase gene polymorphism  (eNOS) is one of three isoforms that synthesize nitric oxide (NO), that participates in several biological processes have been associated with obesity. This study was undertaken to determine if eNOS ge...

Open access Research Article 10.9734/ajocs/2018/v5i218981

Papermaking Using Willow (Salix dasiclados) as a Hardwood Source – A Handsheet and Pilot Paper Machine Study

Klaus Dölle · Asian Journal of Chemical Sciences · 2019

This laboratory handsheet and Fourdrinier pilot paper machine study examine the suitability of willow as a commercial hardwood pulp replacement including utilizing recycled pulp for paper production. The hand sheet study contains 16 different and the pilot paper machine study eig...

Open access Research Article 10.9734/ajocs/2018/v5i218980

Kinetics of the Esterification Reaction of Adipic Acid with 1,6-Hexanediol Catalyzed by Tetrabutyl Titanate

Zegang Zong, Jumei Xu, Weilan Xue & Zuoxiang Zeng · Asian Journal of Chemical Sciences · 2019

In this paper, the esterification reaction for a batch reactor between adipic acid (AA) and 1,6-hexanediol (1,6-HD) catalyzed by tetrabutyl titanate (Ti(OBu)4) was studied in the temperature range of 413-443 K. A kinetic model based on the assumption of 3.5-order reaction was pro...

Open access Research Article 10.9734/AJOCS/2018/46013

Proximate Composition, Phytochemical Analysis and Elemental Characterization of Raphia taedigera Seed

Segun Michael Abegunde · Asian Journal of Chemical Sciences · 2018

Aim: The proximate, qualitative and quantitative phytochemicals, and elemental analysis of Raphia taedigera seed for useful bioactive contents were determined. Results: The results showed the seed contained 6.56%, moisture; 1.96%, ash; 4.56%, protein; 7.50%, crude fibre; 5.30%, f...

Open access Research Article 10.9734/AJOCS/2018/45819

Detection and Quantification of Potential Bioactive Compounds in the Acetone Extract of Citrullus lanatus (Melon) Seed Using GC-MS and FTIR 4 Spectrometer

Ime Robert Ekanem · Asian Journal of Chemical Sciences · 2018

The characterisation of acetone extract of Citrullus lanatus (seed) was carried out using a Gas Chromatograph Mass Spectrometer (GC-MS) and Fourier Transform Infrared (FTIR) Spectrometer. From the GC-MS result, sixteen compounds were identified which include 3-(cyclopropylamino)...

Open access Research Article 10.9734/AJOCS/2018/43778

Gries – Ilosvay Spectrophotometry for Determination of Nitrite in Water and Vegetables in Vietnam

Hue Thi Nguyen, Khuyen Thi Kim Vo, Lan Thi Thuy Bui, Huu Hien Hua & Gregory Elayeche Oko · Asian Journal of Chemical Sciences · 2018

Nitrite ions are one of the harmful compounds for human health. In addition to the available state, nitrite ions are converted from nitrate ions by the microbial reduction in the natural environment. When entering our body, they will react with haemoglobin to form methemoglobin b...

Open access Research Article 10.9734/AJOCS/2018/45514

Isolation and Characterisation of an Isolated Flavonoid from Averrhoa bilimbi

Aju Joseph Kurian, G. Geetha & B. Samuel Thavamani · Asian Journal of Chemical Sciences · 2018

Averrhoa bilimbi is a tropical plant which is commonly known as Bilimbi. The plant has enormous economic importance since its leaves, flower, fruit, bark, seeds, roots or the whole plant are used to treat a variety of diseases in the alternative system of medicine. In the present...

Open access Research Article 10.9734/AJOCS/2018/44725

Heavy Metal and Major Ionic Contamination Level in Effluents, Surface and Groundwater of an Urban Industrialised City: A Case Study of Rangpur City, Bangladesh

Rumana Yesmeen, H. M. Zakir, M. S. Alam & Supti Mallick · Asian Journal of Chemical Sciences · 2018

Industrialisation and unplanned urbanisation in different city areas of Bangladesh have greatly distorted the natural water resources. The present study was undertaken to evaluate ionic contamination level including heavy metals in effluents, surface and groundwater of Rangpur ci...

Open access Research Article 10.9734/AJOCS/2018/45061

Influence of Abattoir Wastes on Soil Microbial and Physicochemical Properties

Emmanuel Dan, Kayode Fatunla & Solomon Shaibu · Asian Journal of Chemical Sciences · 2018

Influence of abattoir wastes on physicochemical and microbiological properties of soil samples obtained from Akwa Ibom State, Southern Nigeria were investigated using standard analytical and microbiological methods. Studied abattoirs and the control soils were in the sandy-clay-l...

Open access Research Article 10.9734/AJOCS/2018/44094

Walnut Shell Modified by Maleic Anhydride: Synthesis and Characterisation

Shenmaishang Li, Zuoxiang Zeng & Weilan Xue · Asian Journal of Chemical Sciences · 2018

A novel modified walnut shell (MWNS) was prepared by the reaction between maleic anhydride and raw walnut shell (WNS) in ethyl acetate. MWNSs with different carboxylic acid groups values (MWNS1 and MWNS2) are obtained and characterised by Fourier transform infrared (FTIR). The ef...

Open access Research Article 10.9734/AJOCS/2018/44606

Screening for Minerals and Anti-minerals Composition of Gongronema latifolium (Utasi) Leaf

Usoro Etesin, Ibanga Isaac, Edidiong Ikpe, Ufikairom G. Isotuk & Asuquo Unyime Joseph · Asian Journal of Chemical Sciences · 2018

Aims: The study was conducted to determine the biochemical composition and nutritional value of Gongronema latifolium leaf locally cultivated in Mkpat Enin, Akwa Ibom State, Nigeria. Study Design: The study involved sampling, identification of the plant, sample preparation, analy...

Open access Research Article 10.9734/AJOCS/2018/43389