厚皮香树皮单宁的化学组成及制胶性能的研究  

STUDY ON TANNINS FROM TERNSTROEMIA GYMNANTHERA BARK AND THEIR PROPERTIES FOR ADHESIVE PREPARATION

作　　者：罗庆云[1] 马文秀[1] 曾效槐 孙达旺[1] 

机构地区：[1]南京林业大学

出　　处：《林产化学与工业》1994年第3期15-20,共6页Chemistry and Industry of Forest Products

基　　金：国家自然科学基金

摘　　要：从厚皮香（Ｔｅｒｎｓｔｒｏｅｍｉａｇｙｍｎａｎｔｈｅｒａ）树皮得到的水溶性单宁，经葡聚糖凝胶ＳｅｐｈａｄｅｘＬＨ－２０柱层析分离，得到各种级分。各级分的水解反应、花色素反应、硫解反应、间苯三酚降解反应以及￣（１３）ＣＮＭＲ谱表明厚皮香树皮单宁是葡萄糖苷化的多聚原花青定。Ｄ－葡萄糖基可能主要连在组成单元的３－Ｏ－位上，这是我国首次发现的苷化的原花青定。多聚原花青定的组成单元以２，３－顺式构型为主。此外，对单宁的分子量及树皮提取物制胶粘剂的性质也做了研究。ater soluble tannins obtained from Ternstroemia gymnanthera bark were chromatographicallyseparated in Sephadex LH-20 column into various portions which were identified to be glucosidated poly- meric procyanidins by methods of acid hydrolysis,anthocyanidin reaction,thiolysis,phloroglucinol reactionand ￣(13)C NMR spectroscopy,D-glucose moiety was assigned to be probably attached to 3-O-position of theflavanol units. This is the first glycosidated procyanidin found in China. The procyanidin is primarily con-sisted of units with 2,3-cis configuration. Molecular weight of tannins and properties of bark extractives inthe preparation of adhesives were also investigated.

关 键 词：厚皮香树皮 单宁 原花青定 

分 类 号：TQ351.014[化学工程]