January 2009

Isolation, characterization and antibacterial activity screening of ethoxyamine tetrahydroxyanthocyanidines from Detarium senegalense gmelin stem bark

Detarium senegalense F. Gmelin (Leguminasae) is well-known Nigerian food and medicinal plant, commonly used in phytomedicine to cure diseases and heal injuries. The ethanol stem barks extract of D. senegalense affords an anthocyanidin alkaloid (2-methoxyamine 3,4,5,7 – tetrahydroxy anthocynadines). The structure was elucidated using NMR spectroscopy in combination with IR and MS spectral data....

Author(s): Donatus Ebere Okwu and Rosemary Uchegbu

January 2009

Adsorption of the proteins of white wine onto activated carbon, alumina and titanium dioxide

  The study investigated the adsorption capacities of bovine serum albumin (BSA), ovalbumin (OVA) and mucin (MUC) onto titanium dioxide, alumina and activated carbon, for the purpose of investigating the optimum conditions of pH and cations concentration of white wine required for the haze removal process. The results showed that the amounts of adsorbed OVA and BSA onto the three adsorbents were 1.32 ±...

Author(s): Omoniyi Kehinde Israel

January 2009

Simultaneous kinetic determination of paracetamol and caffeine by H-point standard addition method

  A very simple and selective spectrophotometric method for simultaneous kinetic determination of paracetamol and caffeine using H-point standard addition method (HPSAM) was described. The method was based on difference in the rate of oxidation of these compounds with Cu(II)-neocuproine system and formation of Cu(I)–neocuproine complex which monitored at 453 nm by spectrophotometer at pH 5.0 in the...

Author(s): H. Tavallali and M. Sheikhaei