ISSN: 2249-9504
CAS CODEN: IJPCDX

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Citations : 3566

International Journal of Pharmaceutical, Chemical and Biological Sciences received 3566 citations as per google scholar report

International Journal of Pharmaceutical, Chemical and Biological Sciences peer review process verified at publons

EFFECT OF SODIUM DODECYL SULPHATE MICELLES ON THE OXIDATION OF L-SERINE BY PERIODATE IN PERCHLORIC ACID MEDIUM

Abstract

Author(s): D. Raga Sudha, G. Nageswara Rao and P. Vani*

The kinetics of oxidation of L-serine(Ser) by periodate(Per) in presence of an anionic surfactant, sodium dodecyl sulphate(SDS) was studied spectrophotometrically at 280 nm in perchloric acid medium at 303 K. The reaction exhibited first order dependence on [Per], [Ser] and [H+ ]. It was found that increase in [SDS] causes an increase in rate indicating that the reaction was catalysed by anionic micelles. The critical micelle concentration(CMC) for SDS was determined in 0.12 mol dm-3 ionic strength in presence of oxidant by surface tension measurements and found to be 1.0 x 10-4 mol dm-3 . The rate-[surfactant] profile shows a limiting behaviour indicative of unimolecular rate-determining reaction in the micellar pseudo-phase. 2-hydroxy acetaldehyde was identified to be the main product of oxidation by IR-spectroscopy. The activation parameters were computed using linear least squares method and the values of Ea and ΔS# are found to be 21.39 ± 1.64 kJ mol-1 and -312 ± 4.67 JK-1 mol-1 respectively.

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