思茅松树皮单宁化学组成的研究  

STUDY ON TANNIN FROM PINUS KESIYA BARK

作　　者：罗庆云[1] 马文秀[1] 孙达旺[1] 

机构地区：[1]南京林业大学

出　　处：《东北林业大学学报》1994年第5期76-79,共4页Journal of Northeast Forestry University

基　　金：自然科学基金

摘　　要：从思茅松（Ｐｉｎｕｓｋｅｓｉｙａ）树皮获得的单宁、经葡聚糖凝胶ＳｅｐｈａｄｅｘＬＨ—２０柱分离得到各种级分。通过各种降解反应及１３Ｃ—ＮＭＲ谱研究表明，思茅松树皮单宁是多聚原花青定，其延伸单元以２，３－顺式构型为主，终端单元以２，３－反式构型为主。经凝胶渗透色谱法（ＧＰＣ）测得思茅松树皮多聚原花青定的聚合度为４～２１。Tannin obtained from Pinus kesiya Bark was chromatographically separated inSephadex LH-20 column into various portions which were identified to be polymeric procyanidins by various degradation reactions and 13C-NMR spectroscopy.The procyanidin consisted of upper units with primarily 2.3-cis configuration,and (+)-catechin primarily as terminal units. Degrees of polymerization ofthe polymeric procyanidin were determined by GPC method to be 4-21.

关 键 词：思茅松 树皮 缩合单宁 原花青定 

分 类 号：TQ351.014[化学工程]