甲醇提取塔拉单宁的工艺研究  

Extract of Tara Tannin by Methanol

作　　者：秦清[1] 徐浩[1] 王金鍫 杜运平[1] 陈文文[1] 张宗和 黄嘉玲 

机构地区：[1]中国林业科学研究院林产化学工业研究所,生物质化学利用国家工程实验室,国家林业局林产化学工程重点开放性实验室,江苏省生物质能源与材料重点实验室,江苏南京210042 [2]南京龙源天然多酚合成厂,江苏南京210032

出　　处：《林产化学与工业》2012年第2期75-78,共4页Chemistry and Industry of Forest Products

基　　金：国家林业局林业公益性行业科研专项(201004013)

摘　　要：以塔拉粉为原料,研究了不同溶剂对塔拉单宁提取的影响,并对塔拉单宁提取的最佳工艺进行了探索。结果表明,采用甲醇为提取剂,采用间歇法提取塔拉单宁,最佳工艺条件为:提取温度60℃,每次提取时间40 min,提取3次,每次1 h,液固比依次为4.5∶1(mL∶g,下同)、4∶1、4∶1,塔拉单宁粗提物得率67.2%～68.4%,相对误差1.77%,单宁纯度66.0%～67.5%,相对误差2.25%,单宁提取率91.5%。Using Tara pod powder as raw material and methanol as extracting solvent,the effects of different solvents on extraction of tara tannin were studied.The results show that the optimum conditions were extraction temperature 60 ℃,extraction time 40 min,extraction three times and each for 1 h.Tara powder to solvent ratio were 4.5 ∶ 1,4 ∶ 1,4 ∶ 1（mL ∶ g）,respectively.The yield of product was 67.2 % to 68.4%,relative error was 1.77%.The tannin purity was 66.0% to 67.5%,relative error was 2.25%.The yield of tannin was 91.5%.

关 键 词：塔拉 单宁 甲醇 

分 类 号：TQ35[化学工程]