杜仲的炮制及降压成分提取工艺的研究

Studies on the Roasting of the Bark of Eucommia(Eucommia ulmoides)and Extraction of the Major Hypotensive Compound

研究了杜仲中主要降压成分松脂醇二葡萄糖甙的提取条件及不同炮制工艺对其含量的影响。结果表明；杜仲粉采用70％乙醇水溶液，于90℃温度下以1：6的料液比浸提3次，每次30min，松脂醇二葡萄糖甙的浸出量最高。杜仲的炮制中，温度及时间对松脂醇二葡萄糖甙含量影响最为显著，随着温度升高，时间的延长，其含量下降。浸盐量对松脂醇二葡萄糖甙含量的影响不大。

Effects of roasting and extraction condition on the content of (+)-pinoresinol-di-β-D-glucoside in bark of Eucommia ulmoides Oliv. were studied. Results showed that when the bark was extracted for 3 ×30 min with 6:1 (solvent: bark)of 70% ethyl-alcohol at 90℃ gave the best result. Roasting had a great influence on the content of (+)-pinoresinol-di-β-D-glucoside,which decreased with increase of temperature and time.