This study aimed to investigate the interaction between soluble antioxidants
in green tea and insoluble dietary fiber bound antioxidants.
Different concentrations of green tea catechins (infusions and pure aqueous solutions) were treated with insoluble wheat bran fraction at
ambient conditions. After treatment, changes in the total antioxidant capacity
of insoluble fraction were determined by the QUENCHER procedure
using ABTS radical probe. Changes in the concentrations of
catechins in the aqueous phase were also determined by using LC–MS
to confirmtheir interaction with polyphenolic radicals bound to insoluble
bran fraction.