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Antioxidant activity of soya hypocotyl tea in humans
Author(s) -
Watanabe Shaw,
Haba Ryota,
Terashima Kayoko,
Arai Yusuke,
Miura Tsutomu,
Chiba Hiroshige,
Takamatsu Kiyoharu
Publication year - 2000
Publication title -
biofactors
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.204
H-Index - 94
eISSN - 1872-8081
pISSN - 0951-6433
DOI - 10.1002/biof.5520120135
Subject(s) - isoflavones , hypocotyl , urine , chemistry , antioxidant , food science , phosphatidylcholine , urinary system , biochemistry , medicine , biology , botany , phospholipid , membrane
Antioxidative activity of isoflavones has not been shown in humans. Newly‐developed isoflavone‐rich soya hypocotyl tea contains about 12 mg isoflavones per liter. 15 tea drinkers and 23 control young female students were randomly selected from volunteers, and underwent physical examination, blood chemistry and urinary analysis before and after one month of tea drinking. A three‐day dietary record was taken before each physical examination. The tea drinkers showed a lower level of phosphatidylcholine hydroperoxide (PCOOH) and phosphatidyl‐ethanolamine hydroperoxide (PEOOH) in the red blood cells and a significant reduction of 8‐hydroxydeoxyguanine ( 8 ohdG) in the urine compared to the controls.