枇杷叶中熊果酸的抗肿瘤作用从枇杷Ｅｒｉｏｂｏｔｒｙａｊａｐｏｎｉｃａ（Ｔｈｕｎｂ．）Ｌｉｎｄｌ．叶提取的熊果酸，试验表明对Ｓ１８０细胞呈细胞毒作用，提取方法：将４．５ｋｇ干燥的枇杷叶粉末用９５％甲醇回流提取，提取液减压浓缩，得甲醇提取物５７０ｇ。再相... Anti-tumor effect of ursolic acid in loquat leaves from Eriobotryajaponica (Thunb.) Lindl. The ursolic acid extracted from the leaves showed that the cells were cytotoxic to the S180 cells. The extraction method was as follows: 4.5 kg of dried loquat leaf powder was extracted by refluxing with 95% methanol, and the extract was concentrated under reduced pressure to obtain methanol extract 570 g. Again...