高圧二酸化炭素と高温高圧水を用いたイチゴ枯葉からの有用成分回収

抄録

Withered strawberry leaves were extracted with supercritical CO₂+water and were decomposed with high temperature and high pressure water. In the case of extraction with supercritical CO₂+water, antioxidant capacity (AOC), total phenolic content (TPC), total flavonoid content (TFC) increased with increasing temperature at 20.1 MPa and have their maximal values against pressure at 35 °C. In the case of hydrothermal decomposition, the increase in the amount of water resulted in higher AOC, TPC, and TFC. AOC, TPC and TFC peaked at around 300 °C. The optimal condition was determined by the balance of decomposition of leaves and that of products.