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All published articles 400

Phytochemical Screening and Antimicrobial Activity of Kenyan Mushroom Ganoderma lucidum

Ebrahim Sande, Danstone Lilechi Baraza, Selline Ooko, Nyongesa Peter Kuloba & Lilian Shiyenzi · Asian Journal of Chemical Sciences · 2019

Aim: To screen the Kenyan Ganoderma lucidum for phytochemicals and to investigate it's potential in the management of some disease-causing microbes. Study Design: Hexane, ethyl acetate and methanol extraction; phytochemical study and anti-microbial activities were analysed on Ken...

Open access Research Article 10.9734/ajocs/2019/v6i218994

Predictive Modeling of the Human Hepatoma (Huh-7D12) Cancer Line of a Series of bis- (5-arylidene-rhodanine-3-yl) Diamine

Koffi Alexis Respect Kouassi, Anoubilé Benié, Mamadou Guy-Richard Koné, Wacothon Karime Coulibaly, Kouadio Valery Bohoussou & Adenidji Ganiyou · Asian Journal of Chemical Sciences · 2019

This work deals with the prediction of the antiproliferative activity of eighteen (18) substances derived from bis-5-arylidene rhodanine against human hepatoma tumor line (Huh-7D12). By applying the functional density theory (DFT) method to the B3LYP / 6-31G (d, p) level, theoret...

Open access Research Article 10.9734/ajocs/2019/v6i218993

Intrinsic Viscosity-molecular Weight Relationship of Poly (Hexanediol Adipate)

Jiankun Li, Zegang Zong, Dehua Hou, Bojun Tu, Weilan Xue & Zuoxiang Zeng · Asian Journal of Chemical Sciences · 2019

In this work, a series of poly(Hexanediol adipate)(PHA) samples (103<Mn<104) with narrow molecular weight distribution were prepared by the polymerization between adilic acid and 1,6-hexandiol. End-group analysis was applied to determine the number average molecular weight (Mn)...

Open access Research Article 10.9734/ajocs/2019/v6i218992

Comparative Study of CBS-Q Calculated and Experimental pKa Values for Fluoro-Acetoxy Derivative

Mustafa Lawar, Safia Elbadwe, Ismail Yalçin, Kayhan Bolelli, Hakan Sezgin Sayiner & Fatma Kandemirli · Asian Journal of Chemical Sciences · 2019

The pKa values were calculated for some acetoxy group molecules using CBS-Q method which is one of the Complete Basis Set methods to find accurate energies. The acetoxy group molecules were also planned by Quantitative Structure Activity Relationship (QSAR) to study their effect...

Open access Research Article 10.9734/ajocs/2019/v6i218991

Phaeophytin and Triterpenoids from Brachystelma togoense Schltr, a Nigerian Medicinal Herb

Abiche Ekalu, Rachael Gbekele-Oluwa Ayo, James D. Habila & Ibrahim Hamisu · Asian Journal of Chemical Sciences · 2019

The medicinal herb Brachystelma togoense schtlr (Apocynaceae) is used traditionally for treatment of ailments.   The secondary metabolites, phaeophytin a, α-amyrin and lupeol were isolated from the CH2Cl2 and MeOH extracts of Brachystelma togoense.  The structures were elucidated...

Open access Research Article 10.9734/ajocs/2019/v6i118990

Spruce Wood Flour for Paper Applications – A Handsheet Study

Klaus Dölle, Sandro Zier, Luca Lombardi, Tobias Stein & Stefan Winkelbauer · Asian Journal of Chemical Sciences · 2019

Aims: The aim of the study was to investigate if spruce wood flour can be an alternative cellulosic-based wood additive for papermaking. Place and Duration of the Study: This study was conducted at the State University of New York, College of Environmental Science and Forestry in...

Open access Research Article 10.9734/ajocs/2019/v6i118989

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