concentration effects is made: LRK>GTP>Trolox>
RGT>LR>Ascorbic acid. The effect as a chainbreaking
antioxidant is clearly correlated to the polyphenol
contents of the extract, with LKR being superior
even to GTP. Ascorbic acid is often considered as a
prooxidant in such aqueous food models and, for LR
prooxidative components, may also be present. It
should also be noted that LRK is still effective at a
rather low concentration.