| The objective of this study was to determine proanthocyanidins and anthocyanins content and their antioxidant activity from four pigmented rice: Black glutinous, Homnin, Man-Pu, Sangyod by extract with 6 different solvents: DI water, 1%HCl-DI water, Ethanol, 1%HCl-Ethanol, Acetone, 1%HCl-Acetone. The results showed that the proanthocyanidin and anthocyanin contents were different between rice phenotypes and polarity of solvents (p<0.05). The total proanthocyanidin contents followed the order: Man-Pu, Sangyod, Homnin, Black glutinous. The highest proanthocyanidin content was found in ethanolic extract of Man-Pu rice (0.938 mg ECE/mg extract). Black glutinous rice contained high amount. Total anthocyanin content of the extracts followed the trend: Black... |
