中文摘要：

利用带13C同位素标记的酚型木素模型物——愈创木基丙三醇-β-愈创木基醚-[α．-13C]，模拟了硫酸盐法蒸煮过程，将合成的木素模型物和典型的半纤维素组成部分——聚葡萄糖甘露糖进行蒸煮，然后利用酸析沉淀木素、乙酸乙酯抽提等方法将蒸煮后的产物分级，并利用13C—NMR、二维HMQC和FT—IR对分级后的产物进行分析，研究常规硫酸盐法蒸煮过程中LCC的形成情况。研究发现：酚型木素模型物的中间产物和聚葡萄糖甘露糖形成了新的苯甲醚键型LCC结构。并且这种LCC结构主要存在于酸不溶物中，碱不溶物、乙酸乙酯抽提物和酸可溶物中不存在新的LCC结构。

英文摘要：

Guaiacylglycerol - β - guaiacyl ether - [ α -13C ] was synthesized as the phenolic type lignin model compounds. Then they were cooked by kraft method in existence of glueomannan. The black liquor from kraft cook- ing was classified into four fractions by aeidfying precipitation and ethyl acetate extraction. Techniques of 13C - NMR and HMQC were applied to determine the fractions and to identify the newly formed LCC structures. The re- sults showed that there were newly formed LCC structures in acid insoluble fractions and they were formed by inter- mediate produced from phenolic type lignin model compounds and glucomannan during kraft cooking. It was found that they were connected with benzyl ether linkage. There was no newly formed LCC structure in alkali insoluble residue, acid soluble residue and ethyl acetate extractiws