The TAC retentions of cooked TCR samples
were higher than 93%. The reduction of TAC of cooked TCR is because
curcuminoids were degraded to other substances such as
ferulic acid, vanillin and vanillic acid (Suresh et al., 2009), all of
which possess lower antioxidant activity than the curcumin,
demethoxycurcumin and bisdemethoxycurcumin (Jayaprakasha
et al., 2006).