Volume 2, Issue 6, December 2014, Page: 117-121
Interaction of Nickel-Dipeptide Complex with Ninhydrin in Aqueous and Micellar Media
Neelam Hazoor Zaidi, Department of Chemistry, College of Engineering Science and Technology, Fiji National University, Samabula-3722, Fiji
Mohammad Akram, Department of Chemistry, Aligarh Muslim University, ALIGARH, 202002, (U.P), India
Received: Nov. 27, 2014;       Accepted: Dec. 3, 2014;       Published: Dec. 19, 2014
DOI: 10.11648/j.ajac.20140206.14      View  2501      Downloads  120
Ninhydrin reactions using manual and automated techniques as well as ninhydrin spray reagents are widely used to analyze and characterize amino acids, peptides, and proteins as well as numerous other ninhydrin positive compounds in biomedical, clinical, food, forensic, histochemical, microbiological, and nutritional and plant studies. Ninhydrin in aqueous solution reacts with α-amino acids to give a compound known as Ruhemann’s purple (diketohydrindylidenediketohydrindamine, DYDA). In order to elucidate the mechanism of the reactions of ninhydrin with [Ni(II)-Gly-Leu]+ complexes, systematic kinetic studies were performed by following appearance of the respective colored condensation products at different [surfactant], [reactant], [salt] and temperature. The rates of the reaction were determined in both water and surfactant micelles in the absence and presence of various organic and inorganic salts at 70 °C and pH 5.0. The result shows that the reaction follows the same first-order and fractional-order kinetics with respect to [Ni(II)-Gly-Leu]+ and [ninhydrin], respectively, in both aqueous and micellar medium. Quantitative kinetic analysis of kψ−[CTAB] data was performed on the basis of the pseudo-phase model of the micelles.
Micelle, Kinetics, [Ni(II)-Gly-Leu]+, CTAB
To cite this article
Neelam Hazoor Zaidi, Mohammad Akram, Interaction of Nickel-Dipeptide Complex with Ninhydrin in Aqueous and Micellar Media, American Journal of Applied Chemistry. Vol. 2, No. 6, 2014, pp. 117-121. doi: 10.11648/j.ajac.20140206.14
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