正交试验法优选大枣渣多糖水煎煮提取工艺

Optimizing Water-Extraction Process for Polysaccharides in the Residue of Fructus Jujubae by Orthogonal Design

目的优选大枣渣多糖提取工艺。方法以多糖得率、多糖含量为指标,采用正交试验对大枣渣中大枣多糖的提取工艺进行优选。结果优选工艺为:90℃水温浸3次,每次5h,80%醇沉。多糖得率及含量分别为20%、43.54%。结论该工艺合理,多糖成分提取完全,具有较好的经济效益。

Objective To optimize the extraction process f or polysaccharide in the residue of Fructus Jujubae(FJ ).Methods The conditions of extraction process for polysaccharide of FJ was screen ed with the yield and content of polysaccharides as markers by orthogonal experimental design.Results The optimum extraction process was:soaking the residue of FJ with water at 90℃for3times(5hours each time )and precipitated with 80%ethanol.T he yield and content of polysaccharides were 20%and 43.54%respectively.Conclusion This procedure is reliable and polysac-charides can be extracted completely by this procedure.It can bring a hig h economy benefit.