CAJ | 학술논문

为表征巨龙竹木质素化学结构，在温和条件下连续采用二氧六环和二甲基亚砜抽提竹材原料，得到竹材木质素组分。红外光谱、凝胶色谱和核磁共振分析结果表明，巨龙竹木质素属于典型的禾草类木质素，其大分子由对羟基苯丙烷（ H）、愈创木基丙烷（ G）和紫丁香基丙烷（ S）三种基本结构单元组成；巨龙竹木质素大分子的主要联接键为β－O－4'醚键、β－β'和β－5'碳－碳键；在巨龙竹木质素大分子中，苯丙烷结构单元侧链γ位碳与对香豆酸存在化学键联接，形成对香豆酸酯。
위표정거룡죽목질소화학결구，재온화조건하련속채용이양륙배화이갑기아풍추제죽재원료，득도죽재목질소조분。홍외광보、응효색보화핵자공진분석결과표명，거룡죽목질소속우전형적화초류목질소，기대분자유대간기분병완（ H）、유창목기병완（ G）화자정향기병완（ S）삼충기본결구단원조성；거룡죽목질소대분자적주요련접건위β－O－4'미건、β－β'화β－5'탄－탄건；재거룡죽목질소대분자중，분병완결구단원측련γ위탄여대향두산존재화학건련접，형성대향두산지。
Bamboo lignin polymer was isolated from Dendrocalamus sinicus with dioxane and DMSO under mild conditions, and its'structural properties was characterized with Fourier transform infrared spectroscopy ( FTIR), gel permeation chromatography ( GPC ) , and nuclear magnetic resonance spectrum.The results indicated that the bamboo lignin belonged to grass lignin , consisting syringl ( S ) , guaiacyl ( G ) , and p-hydroxylphengl ( H ) units.The major interunit linkages presented in the obtained bamboo lignin were β-O-4'aryl ether linkages ,β-β'andβ-5'C-C linkages.In addition, a small percentage of the lignin side-chain was found to be esterfied by p-coumaric acid at the γ-carbon.