The Enzyme Inhibitory Activity of Ethanol Extracts Derived from Germinated Rough Rice (Oryza sativar L.) Treated by High Pressure

We evaluated the enzyme inhibitory activity of germinated rough rice (Oryza sativar L.) treated by high pressure (30 MPa) for 24 h (HP24) and 48 h (HP48).In rice germinated for 1 day, the α-glucosidase inhibitory activity reached its highest level, 68.32%, at HP48.The α-amylase inhibitory activity increased from 32.66-57.00%at HP0, to 43.67-74.82%at HP48.On the other hand, the inhibitory activity of angiotensin-converting enzyme increased from 27.98% to 49.42% over the course of the second day of HP48.The inhibitory activity of xanthine oxidase peaked of 67.51% at HP48 and subsequently decreased.Lipase inhibitory activity increased from 24.04-47.91%at HP0, to 29.62-64.63%at HP48.These results provide useful information for the use of germinated rough rice as a functional food material and demonstrate that high-pressure treatment during the germination process efficiently increase enzyme inhibitory activity.