To study the optimal process of the extraction of tannic acid from Chinese gallnut.
从五倍子中提取单宁酸，通过正交实验优化筛选出最佳工艺。
Recovery tests of standard addition in Chinese gallnut samples showed an average recovery of 100. 6%.
在中药五倍子浸提液中用标准加入法进行回收实验，其平均回收率为100.6%。
The ellagic acid has been prepared by oxidation of the leaching solution of Chinese gallnut containing tannic acid.
以五倍子为原料浸取单宁酸，由单宁酸氧化制备鞣花酸。
The method has been used to determine the content of gallic acid in Chinese medicine gallnut with satisfaction.
该方法用于测定中药没食子中没食子酸的含量，结果令人满意。
The material of brewing tannin is natural gallnut, it can be directly used in food and medicine by physical purifying and it has brought into the catalogue of Chinese food additives(No. 2201).
酿造单宁是以天然五倍子为原料，用物理方法提纯可直接用于食物和入药，已纳入我国食品添加剂目录（ 编号为2201） 。
The material of brewing tannin is natural gallnut, it can be directly used in food and medicine by physical purifying and it has brought into the catalogue of Chinese food additives(No. 2201).
酿造单宁是以天然五倍子为原料，用物理方法提纯可直接用于食物和入药，已纳入我国食品添加剂目录（ 编号为2201） 。
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