杜仲不同加工方法对其质量的影响

目的研究杜仲的不同加工方法对其质量的影响。方法通过杜仲粗皮占杜仲干燥树皮的质量分数及去粗皮前后浸出率的比较,粗皮与杜仲中松脂醇二葡萄糖苷含量、农药残留量及重金属含量的比较,新鲜树皮发汗前后松脂醇二葡萄糖苷含量的比较等进行研究。结果粗皮占杜仲干燥树皮质量分数为12.7%(n=3);去粗皮前后的醇溶性浸出率没有显著性差异,水溶性浸出率比未去粗皮高11.26%(P<0.05,n=5);粗皮残留有害物质较高而含松脂醇二葡萄糖苷较少(0.0504%,n=3);发汗前后松脂醇二葡萄糖苷含量:未发汗生品>未沸水浸发汗样品>沸水浸发汗样品,三者之间均有显著性差异(P<0.05,n=5)。结论杜仲在原产地加工中"去粗皮"是必要的。值得注意的是:"发汗"后松脂醇二葡萄糖苷的含量却下降。

Study on the Quality of Eucommia Ulmodies Processing in Planting by Different Methods

Objective To study on the quality of Eucommia ulmodies processing in planting by different methods.Methods The quantity percent of coarsed cortex,water and ethanol extract were compred,the contents of Pinoresinol diglucoside(PDG)were determined by HPLC,the residues of pesticides and the content of heavy metal element were carried out to investigate the quality.Results The quantity percent of coarsed cortex was 12.7%(n=3).Ethanol extract had no remarkable difference whether scrape the coarsed cortex or not.Water extract was higher 11.26%(P<0.05,n=5)than no scraped.The content of heavy metal element of coarsed cortex was high,but PDG was low(0.0504%,n=3).The content of PDG of Eucommia Cortex which Fahan had no soaked in boiling water higher than soaked,but lower than no Fahan.There were remarkable differences among them(P<0.05,n=3).Conclusion Scrape the coarsed cortex is necessary of Eucommia ulmodies processing in planting.It deserve to take notice that the content of PDG declined after Fahan.