英语语法分析

Objective:To extract and determine total flavonoids and polysaccharides in Ephedra sinica.

目的：从麻黄中提取总黄酮和多糖，并测定其含量。

Dh also visited physical fitness centres in the same month, but no product containing ephedra was detected.

生署亦于一月到健美中心视察，但并无发现任何产品含有麻黄。

Take bitter orange extract, a substance that has replaced ephedra as an ingredient in many weight-loss supplements.

苦橙提取物在很多减肥补充剂中都已经取代了麻黄。