牛蒡短链菊粉的提取

以牛蒡为原料,采用70%乙醇回流提取牛蒡短链菊粉,以短链菊粉得率为指标,通过单因素试验考察了影响短链菊粉提取的主要因素。为验证该工艺制备短链菊粉的可靠性,采用凝胶过滤法测定所得短链菊粉的相对分子质量。结果表明,牛蒡短链菊粉提取的最佳工艺条件为:回流温度50℃,回流时间1.5h,料液比1∶20,制得的短链菊粉的平均相对分子质量为667。

Extration of short-chain inulin from burdock

Using burdock as the raw material and the yield of short-chain inulin as index.70% ethanol reflux extraction of short-chain inulin in burdock was established by single factor test and the factors that influenced the extraction of short-chain inulin were investigated.In order to verify the accuracy of the technique,the molecular weight of burdock inulin was measured by gel filtration.The optimum condition were developed as follows: temperature at 50 ℃,extracting time for 1.5 h,solid-liquid ratio 1∶20,and molecular weight of short-chain inulin product was 667.