摘要
在水稻 (Oryza sativa L.)生长过程中 ,向其茎秆部节间的空腔分别注入在侧链α,β,γ位带有 1 3C标记的松柏醇葡萄糖甙 ,得到 1 3C标记的稻秆木素 ,用高分辨率固体核磁 1 3C NMR对其组织进行分析 ,发现外源性的松柏醇葡萄糖甙并不影响水稻中木素的正常合成 .证明了 β-O-4,β-β,β-5和 β-1结构是稻秆原本木素中的主要结构 ,另外还有少量的松柏醇和阿魏酸类结构 ,并证实木素在
Carbon 13 enrichment of specific carbon of rice stalk lignin was achieved by feeding coniferin [ α 13 C], coniferin [ β 13 C] and coniferin [ γ 13 C] into an internode cavity of the stalk of a growing rice plant( Oryza sativa L.). The resulting rice stalk tissues were analyzed by high resolution solid state carbon 13 nuclear magnetic resonance ( 13 C NMR) spectroscopy. It was found that the administration did not affect the normal ligninfication of rice plant. It was also proved that β O 4, β β, β 5 and β 1 were mainly a substructure in protolignin of rice stalk although there were some minor substructures as coniferyl alcohol and ferulic acid unit. Importantly, the result indicated that significant bonding occurred at α position to other constituents, presumed to be mainly of carbohydrates.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第6期1073-1076,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金 (批准号 :2 99740 11)
霍英东教育基金 (批准号 :710 66)
广东省千百十工程优秀人才基金资助
