The effects of treatment on the c-oryzanol and tocopherols contents of rice bran and rice husk extracts are shown in Table 2. For extracts of all samples, the amount of c-oryzanol ranged from 0.566 mg/g in hot-air treated rice husk to 5.701 mg/g in raw rice bran. The bran fraction was the best source of c-oryzanol (5.28– 5.70 mg/g), followed by ground rice husk (0.90–0.99 mg/g) and rice husk (0.56–0.57 mg/g), respectively. All samples indicate decreased slightly, with losses of FIR and hot-air treatment, respectively. It was observed that the contents of c-oryzanol were not significantly (p < 0.05) increased by cellulase treatment in all samples except for ground rice husk. Similar to TPC, an increase of coryzanol
in ground rice husk may have resulted from the reduction of particle size. This is in agreement with the report by Pinelo et al (2007). They found that reducing the sample size could increase the extraction of certain bioactive compounds.