10批市售僵蚕商品药材质量评价

摘要

目的:采用多指标评价市售僵蚕药材质量状况,为临床合理用药提供参考.方法:按照2015年版《中国药典》(一部)对市售10批僵蚕药材外观性状进行观察,对水分、总灰分含量进行测定,采用傅里叶变换红外光谱法对药材进行鉴别,采用紫外-可见分光光度法和高锰酸钾滴定法分别测定有效成分蛋白质和草酸铵的含量.结果:10批僵蚕的水分含量在2.84%~4.07%之间(RSD<5%,n=3),总灰分含量在7.79%~34.32%之间(RSD<5%,n=3);紫外和红外光谱图基本相似,均能反映出蛋白质多肽类物质的特征峰;蛋白质含量在29.87%~57.19%之间(RSD<0.5%,n=3),草酸铵含量在0.27%~4.77%之间(RSD<5%,n=3).结论:10批市售僵蚕均为正品且为炮制品;水分含量符合2015年版《中国药典》(一部)规定,但总灰分含量未达其要求;其主要成分为蛋白质多肽类物质,但有效组分蛋白质多肽与草酸铵含量差异较大.%OBJECTIVE:To evaluate the quality of Bombyx batryticatus medicinal materials in the market by multi-index,and provide reference for clinical rational drug use. METHODS:Referring to the Chinese Pharmacopoeia (2015 edition,part 1),the appearance characters of samples were observed,moisture and the total ash were detected,Fourier transform infrared spectroscopy was adopted to identify the medicinal materials,UV-Visible spectrophotometry and potassium permanganate titration were respec-tively used to determine the contents of active ingredient protein and ammonium oxalate. RESULTS:The moisture ranged in 2.84%-4.07%(RSD<5%,n=3),total ash in 7.79%-34.32%(RSD<5%,n=3),UV and FTIR spectra were basically similar, and both can reflect the characteristic peaks of protein peptides. Protein content ranged in 29.87%-57.19%(RSD<0.5%,n=3), ammonium oxalate content in 0.27%-4.77%(RSD<5%,n=3). CONCLUSIONS:The 10 batches of samples are authentic and processed products,moisture fits the requirement in pharmacopoeia while total ash does not;and the main ingredient is protein pep-tides. However,effective protein polypeptide content shows great differences as well as ammonium oxalate.