Prasuna, C P Lakshmi and Chakradhar, R P S and Rao, J L and Gopal, N O (2009) EPR and IR spectral investigations on some leafy vegetables of Indian origin. Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy, 74 (1). pp. 140-147. ISSN 1386-1425

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Abstract

EPR spectral investigations have been carried out on four edible leafy vegetables of India, which are used as dietary component in day to day life. In Rumex vesicarius leaf sample, EPR spectral investigations at different temperatures indicate the presence of anti-ferromagnetically coupled Mn(IV)-Mn([V) complexes. EPR spectra of Trigonella foenum graecum show the presence of Mn ions in multivalent state and Fe(3+) ions in rhombic symmetry. EPR spectra of Basella rubra indicate the presence of Mn(IV)-O-Mn(IV) type complexes. The EPR spectra of Basella rubra have been studied at different temperatures. It is found that the spin population for the resonance signal at g = 2.06 obeys the Boltzmann distribution law. The EPR spectra of Moringa oliefera leaves show the presence of Mn(2+) ions. Radiation induced changes in free radical of this sample have also been studied. The FT-IR spectra of Basella rubra and Moringa oliefera leaves show the evidences for the protein matrix bands and those corresponding to carboxylic C=O bonds. (C) 2009 Elsevier B.V. All rights reserved.

Item Type:	Article
Uncontrolled Keywords:	EPR; FTIR; Rumex vesicarius; Basella rubra; Moringa oleifera
Subjects:	Microstructure and Characterization
Divisions:	Glass
Depositing User:	Bidhan Chaudhuri
Date Deposited:	01 Mar 2012 07:53
Last Modified:	01 Apr 2016 06:04
URI:	http://cgcri.csircentral.net/id/eprint/1083

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