4. Conclusions
RBE showed higher total phenolic compounds and potato and
apple PPO inhibitory effect than CDRBE, and was also more effective at inhibition of browning in potato and apple puree during storage of up to 6 h. Five phenolic substances, (protocatechuic acid,vanillic acid, p-coumaric acid, ferulic acid and sinapic acid) in RBE and CDRBE were separated by the HPLC system and ferulic acid and p-coumaric acid were the major phenolic acid in RBE and CDRBE