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Titre du document / Document title

ESR spectroscopic studies on free radical quenching action of finger millet (Eleusine coracana)

Auteur(s) / Author(s)

SRIPRIYA G. (1) ; CHANDRASEKHARAN K. (2) ; MURTY V. S. (2) ; CHANDRA T. S. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Biochemistry Division, Department of Chemistry, Indian Institute of Technology, Madras-600 036, INDE
(2) Department of Physics, Indian Institute of Technology, Madras-600 036, INDE

Résumé / Abstract

The free radical quenching action of finger millet (Eleusine coracana) on 1,1'-diphenyl-2-picrylhydrazyl (5.407x1017 spins/ml-1) and hydroxyl (0.6015x1015 spins /ml-1) radicals was studied by electron spin resonance (ESR) spectrometry. A 10 ml concentrate of the methanol extract was prepared using 25 g of the cereal grains and all analysis done after 1:10 dilution. DPPH radical quenching with 50 μl of the extracts showed that the brown finger millet quenched 94% whereas the white finger millet quenched only 4%. The phenolic content of brown finger millet was 96% higher than the white variety. Processing of the brown finger millet by germination and/or fermentation decreased the quenching activity. In comparison, foxtail millet, pearl millet and sorghum, quenched 91, 59 and 52 percent respectively, while wheat, rice (dehusked) and rice husk quenched 18, 1.8 and 20 % respectively. Brown finger millet (50 μl) also quenched 77% of hydroxyl radicals. The results indicate that finger millet is a potent source of antioxidant compounds.

Revue / Journal Title

Food chemistry    ISSN  0308-8146   CODEN FOCHDJ 

Source / Source

1996, vol. 57, no4, pp. 537-540 (13 ref.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Kidlington, ROYAUME-UNI  (1976) (Revue)

Mots-clés anglais / English Keywords

Comparative study

;

Cereal

;

Pharmacognosy

;

Eleusine coracana

;

Plant origin

;

Food

;

Millet

;

Extract

;

Antioxidant

;

Antioxygen

;

Radical trapping

;

Free radical

;

EPR spectrometry

;

Gramineae

;

Monocotyledones

;

Angiospermae

;

Spermatophyta

;

Mots-clés français / French Keywords

Etude comparative

;

Céréale

;

Pharmacognosie

;

Eleusine coracana

;

Origine végétale

;

Aliment

;

Millet

;

Extrait

;

Antioxydant

;

Antioxygène

;

Interception radical

;

Radical libre

;

Spectrométrie RPE

;

Gramineae

;

Monocotyledones

;

Angiospermae

;

Spermatophyta

;

Mots-clés espagnols / Spanish Keywords

Estudio comparativo

;

Cereal

;

Farmacognosia

;

Eleusine coracana

;

Origen vegetal

;

Alimento

;

Mijo

;

Extracto

;

Antioxidante

;

Antioxígeno

;

Intercepción radical

;

Radical libre

;

Espectrometría RPE

;

Gramineae

;

Monocotyledones

;

Angiospermae

;

Spermatophyta

;

Localisation / Location

INIST-CNRS, Cote INIST : 17810, 35400006135488.0090

Nº notice refdoc (ud4) : 2525988



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