Modern Chemistry

Volume 5, Issue 6, December 2017

  • Assessment of the Content of Dietary Trans Fatty Acids and Biologically Active Substances in Cow's Milk and Curd

    Silviya Ivanova, Ljubomir Angelov

    Issue: Volume 5, Issue 6, December 2017
    Pages: 86-92
    Received: 26 September 2017
    Accepted: 14 October 2017
    Published: 8 November 2017
    Abstract: The present study aims to establish the content of natural trans fatty acids (TFA), biologically active and anticancerogenic components in cow's milk, obtained from the Bulgarian Rhodope Cattle breed and the curd produced by it during the lactation, and to evaluate the fatty acid composition of milk fat as a healthy source of human nutrition. The i... Show More
  • Sensitive Extractional Colorimetric Analysis of Fexofenadine Hydrochloride and Irbesartan Bases Through Acid-Dye Complexation Using Naphthol Blue Black in Pure Form and Pharmaceuticals

    Safwan Ashour, Roula Bayram

    Issue: Volume 5, Issue 6, December 2017
    Pages: 93-100
    Received: 25 January 2017
    Accepted: 10 February 2017
    Published: 28 November 2017
    Abstract: A simple, accurate and sensitive method has been presented for the determination of fexofenadine hydrochloride (FEX) and irbesartan (IRB) in bulk and pharmaceutical preparations. The method is based on the reaction of the above cited drugs with naphthol blue black (NBB) dye in solutions containing Britton buffer to form ion-pair complexes extractab... Show More
  • Barium Diphenylamine-4-Sulfonate (BDPA) Ion-Ion Interactions and Solvation Volumes in Acetonitrile–Water Mixed Solvents

    Elsayed T. Helmy, Esam A. Gomaa, Elsayed M. Abou Eleef

    Issue: Volume 5, Issue 6, December 2017
    Pages: 101-105
    Received: 7 November 2017
    Accepted: 20 November 2017
    Published: 2 January 2018
    Abstract: The aim of this work is to calculate ion-ion interaction, density of organic-aqueous mixtures of Acetonitrile-water (AN-H2O), density of saturated solutions of BDPA, salvation volumes (Van der Waals volume VM, molar volume VM and electrostriction volume Ve) and solvated radii (ro) from solubility experiments. It was found that values of the log act... Show More