From Reuters:
SINGAPORE (Reuters) - Dark soya sauce, widely used in east Asia, may prove to be more effective than red wine and vitamin C in combating human cell damage, researchers in Singapore said.
Scientists found that the sauce -- derived from fermented soya beans -- contains antioxidant properties about 10 times more effective than red wine and 150 times more potent than vitamin C, Singapore's Strait Times reported on Saturday.
Antioxidants -- found in red wine, fruits and vegetables -- counter the effects of free radicals, unstable atoms which attack human cells and tissues.