Document Detail


Amaranth dye in the evaluation of bleaching of cerium (IV) by antioxidants: Application in food and medicinal plants.
MedLine Citation:
PMID:  22579334     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
A simple, low-cost, sensitive, and diversely applicable spectrophotometric method for the determination of total antioxidant capacity of several medicinal plants and food has been developed. The method is based on the bleaching of cerium (IV) by antioxidants and dye in slightly acid medium at room temperature. The unbleached dye, imparting pink color to the solution, is measured at λ(max) 530nm which is directly proportional to the antioxidant concentration. The method is reproducible, and the trolox equivalent antioxidant capacities (TEAC coefficients) of the tested antioxidant compounds were correlated with those found by reference method such as ABTS. The recommended method was applied for the determination of total antioxidant capacity of medicinal and food samples. The performance of the recommended method was evaluated in terms of Student's t-test and variance ratio F-test, which indicated the significance of proposed method over the reference method.
Authors:
Padmarajaiah Nagaraja; Narayanan Aradhana; Anandamurthy Suma; Nelligere Arkeswaraiah Chamaraja; Anantharaman Shivakumar; Kolar Venkatachala Ramya
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-4-23
Journal Detail:
Title:  Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy     Volume:  -     ISSN:  1873-3557     ISO Abbreviation:  -     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-5-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9602533     Medline TA:  Spectrochim Acta A Mol Biomol Spectrosc     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier B.V. All rights reserved.
Affiliation:
Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysore 570 006, Karnataka, India.
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