文献类型：期刊文献

中文题名：溶剂萃取法制备药用单宁酸的研究

英文题名：STUDY ON PREPARATION OF PHARMACEUTICAL TANNIC ACID BY SOLVENT EXTRACTION

作者：毕良武[1] 吴在嵩[1] 陈笳鸿[1] 汪咏梅[1] 吴冬梅[1] 顾人侠[1]

第一作者：毕良武

机构：[1]中国林业科学研究院林产化学工业研究所

年份：1997

卷号：17

期号：3

起止页码：41-45

中文期刊名：林产化学与工业

外文期刊名：CHEMISTRY AND INDUSTRY OF FOREST PRODUCTS

收录：CSTPCD;;Scopus;北大核心:【北大核心1996】；CSCD:【CSCD_E2011_2012】；

语种：中文

中文关键词：药用;单宁酸;溶剂萃取法;乙酸乙酯

外文关键词：Pharmaceutical tannic acid;Solvent extraction;Ethyl acetate

分类号：TQ460.4

摘要：由工业单宁酸经乙酸乙酯溶剂萃取（５０～５５℃，１～２ｈ），制得药用单宁酸，其得率约为８５％，单宁酸含量超过９４％，乙酸乙酯的回收率超过９０％。经乙酸乙酯萃取的剩余水液可用于碱水解制备没食子酸。产物总得率（包括药用单宁酸和没食子酸）约为９１％。
Pharmaceutical tannic acid was prepared from industrial tannic acid by ethyl acetate extraction at 50～55℃ for 1～2 h.The yield of the product was ca.85% which contained over 94% of tannic acid.The recovery of ethyl acetate was over 90%.The remaining liquor after ethyl acetate extraction could be used for preparing gallic acid by alkaline hydrolysis.Total yield of pharmaceutical tannic acid and gallic acid was ca.91%.