Title of article :
Polyphenolic Flavanols as Scavengers of Aqueous Phase Radicals and as Chain-Breaking Antioxidants
Author/Authors :
Salah، نويسنده , , N. and Miller، نويسنده , , N.J. and Paganga، نويسنده , , G. and Tijburg، نويسنده , , L. and Bolwell، نويسنده , , G.P. and Riceevans، نويسنده , , C.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1995
Pages :
8
From page :
339
To page :
346
Abstract :
The purpose of this investigation was to establish the relative antioxidant activities in vitro of the flavanolic polyphenols, the catechins, and catechin-gallate esters. The relative antioxidant potentials were measured against radicals generated in the aqueous phase and against propagating lipid peroxyl radicals. The results show that in the aqueous phase their order of effectiveness as radical scavengers is epicatechin gallate (ECG) > epigallocatechin gallate (EGCG) > epigallocatechin (EGC) > gallic acid (GA) > epicatechin ≃ catechin; against propagating lipid peroxyl radical species, epicatechin and catechin are as effective as ECG and EGCG, the least efficacious being EGC and GA. This is consistent with their relative abilities to protect against consumption of LDL α-tocopherol. The results are discussed in the context of the most relevant antioxidant constituents of green tea extracts.
Journal title :
Archives of Biochemistry and Biophysics
Serial Year :
1995
Journal title :
Archives of Biochemistry and Biophysics
Record number :
1457867
Link To Document :
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