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发明公开
CN101139402A 一种从大枣中提取多糖的方法 无效 - 撤回

一种从大枣中提取多糖的方法
摘要：
本发明公开了一种从大枣中提取多糖的方法。提取步骤如下：(A)将大枣加水提取1－3次，离心分离，减压浓缩；(B)加入澄清剂，搅拌均匀后静置离心分离；(C)分离所得上清液中加入乙醇，使乙醇的体积浓度达70％以上，隔夜醇沉后离心分离；(D)将所得固体干燥即得大枣多糖。本发明提取得到的大枣多糖含量达40％以上，整个提取分离过程不含有毒有害的有机溶剂，安全无毒，操作简单，耗时少，实现了全程绿色提取。
摘要（英）：

The present invention discloses a method tobextract polysaccharide from the jujube. The extraction process is of the following steps: (A) jujube is mixed with water and is extracted for 1 to three times; then the jujube experiences the centrifugal separation and vacuum low-pressure concentration; (B) clarifying agent is added into the jujube mass which is statically placed for centrifugal separation after stirring; (C) the separated sypernatant is added with alcohol, which is more than 70 percent in volume; the alcohol in the sypernatant is deposited overnight, and then the sypernatant experiences centrifugal separation; (D) the solid obtained is dried to get jujube polysaccharides. The jujube polysaccharides obtained through the present invention is more than 40 percent of the original jujube. The whole extraction and separation process involves no toxic and hazardous organic solvents. The present invention is safe and non-toxic. The operation is simple and the consumed time is short. A full green extraction can be achieved through the present invention.

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