support(MOST 108-2221-E415-014)from the Ministry of Science and Technology,Taiwan,ROC is gratefully acknowledged。
The pitaya peel powder was mixed with 50%ethanol solution at a ratio of 1:10(w/v)for 24 h to obtain the pitaya peel ethanol extract(E).The extract was further fractionated with supercritical carbon dioxide(SC-CO_(2))u...