A novel, rapid and cost-effective chlorpromazine hydrochloride (CPZH) decolorization assay is described for the screening of antioxidant activity. A chromogenic reaction between CPZH and potassium persulfate at low pH produces an reddish-pink radical cation with maximum absorption at 527 nm in its first-order derivative spectrum. The antioxidant capacity of standard solutions of an antioxidant was evaluated by comparing with the inhibition curve using Trolox as the standard. Comparison of antioxidant capacity determined with this newly developed CPZH assay and with the well-known 2,2'-...

Exposure of heavy metals to humans has risen continuously through the contaminated diet. The objective of the research is to determine the concentration of Cu, Cr, Ni, Pb, Co and Cd in dry fruits. Ten samples of dry fruits i.e Almond (P. amygdalus), Hazelnut (C. Vellanus), Dates (Phoenix dactylifera), Cashew nuts (Anacardium occidentale), Walnuts (Juglans nigra), Raisins (Vitis Vinifera), Peanuts (Arachis hypogeaea), Apricot (Prunus armeniaca), Figs (F. macrophylla) and pistachio (P. Vera) was collected and studied the effect of microwave roasting and storage on heavy metal concentration.

2-Thiophenecarboxylic acid hydrazide has been treated with benzaldehyde in 1:1 molar ratio at room temperature in the presence of a suitable solvent to yield Schiff base. Then it has been treated with R2SnCl2/R3SnCl in 1:1 molar ratio to synthesize organotin(IV) complexes under reflux conditions. Organotin(IV) complexes have been characterized by FT-IR and semi-empirical study. FT-IR data explains the tetrahedral arrangement of sulphur donor ligand with tin metal which is further confirmed by semi-empirical study. Least value of dipole moment of complex 3 explain the trans orientation of...

Xylanase enzymes are group of enzymes that can degrade Xylan present in plants. Xylan lignin and cellulose formed a complex matrix in plants. Lignin imparts colour to cellulose and thus eventually imparts colour to paper and pulp. Xylanase facilitates the removal of lignin from the paper pulp thus improves the brightness of paper. Xylanase was produced by Aspergillus niger using different carbon sources. UV irradiation of Aspergillus niger slightly improves the Xylanase activity than native Aspergillus niger. Twenty minutes exposure of Aspergillus niger to UV irradiation was considered...