以东莨菪碱为参照品，测知菝葜和土茯苓根茎中生物碱含量分别为0.0222%和0.0349%。

• Using scopolamine as standard sample, total alkaloid content of Smilax china L and Smilax glabra Roxb were determined to be 0.0222%25 and 0.034 9%25.