The ability of fungal enzymes in degradation of lignin has promoted the exploration of simple compounds which ...
Mingyu Ma~1,Yimin Xie~(1,2*),Haitao Yang~2,and Peng Wang~2 1.Key Laboratory of Paper Science and Technology of Ministry of Education,Shandong Institute of Light Industry,Jinan,250353,China
为了研究植物纤维原料中的木素-碳水化合物复合体(lignin-carbohydrate complexes,LCCs)在硫酸盐法蒸煮过程中的结构变化,向天然植物稻秆中投入带13 C同位素标记的松柏醇葡萄糖苷,用Bjrkman的方法将木素-碳水化合物复合体从稻秆粉末中分离出来,结合红外光谱和高分辨率的液态13 C NMR检测分析发现木素与糖类主要是通过苯甲醚键、酯键和缩醛键连接。其中,在LCC中木素的主要结构为β-O-4结构。将分离出来的带标记的LCC模拟硫酸盐法蒸煮,分离得到木素-碳水化合物复合体的硫酸盐木素。通过对天然稻秆LCC硫酸盐木素和稻秆LCC硫酸盐木素-[α-13 C]的红外光谱和高分辨率13 C NMR分析,证实了在稻秆LCC硫酸盐蒸煮后,产物中还存在少量以苯甲醚键和缩醛键连接的LC结构。另外,所得硫酸盐木素主要以β-O-4结构为主,含有少量的β-β、β-5和β-1结构。
In order to understand the association of lignin and cellulose in the process of Kraft cooking,the related con...
Haitao Yang~(1,2),Lan Yao~1,Meng Zhang~1,Lei Wang~1,Yimin Xie~(1*) 1.Institute of Pulp & Paper Engineering,Hubei University of Technology,Wuhan,430068,P.R.China
Yimin Xie~(1*),Haitao Yang~1,Peng Wang~1,and Fang Zhao~2 1.Research Institute of Pulp & Paper Engineering,Hubei University of Technology,Wuhan,430068,P.R.China
