杞柳的化学成分及其木质素微区分布的研究

doi:10.3969/j.issn.0253-2417.2016.05.018

摘要/Abstract

摘要： 采用传统的化学成分测试方法和激光扫描共聚焦显微镜技术（CLSM）研究了杞柳的化学成分以及木质素在各细胞及纤维细胞各微区的分布，分析了株高不同部位化学成分的变异规律。结果表明：杞柳的1% NaOH抽提物、热水抽提物、冷水抽提物、苯醇抽提物、综纤维素、α-纤维素、酸不溶木质素、酸溶木质素、多戊糖和灰分分别为32.11%、10.85%、7.11%、3.27%、70.46%、35.50%、20.18%、4.50%、15.51%、0.90%；在不同部位，除了α-纤维素和多戊糖含量差异不显著，其余各指标均差异显著；木质素在各细胞及纤维细胞各微区分布不均一，导管细胞壁木质素浓度高于木纤维和射线，纤维细胞角隅处木质素浓度高于次生壁和复合胞间层。

关键词: 杞柳, 化学成分, 木质素, 微区分布, 不同部位

Abstract: Chemical composition and their variation patterns along stem height, and lignin distribution of Salix integra were investigated using the traditional determination of chemical composition and confocal laser scanning microscope (CLSM). The results showed that the contents of the extractives of 1% NaOH, hot-water, cold-water, benzene-ethanol, the holocellulose, α-cellulose, acid-insoluble lignin, acid-soluble lignin, pentosan and ash were 32.11%, 10.85%, 7.11%, 3.27%, 70.46%, 35.50%, 20.18%, 4.50%, 15.51% and 0.90%, respectively. The variation of each composition was significant in different parts except α-cellulose and pentosan. It was also observed that the lignin distribution was heterogeneous. The lignin concentration in vessel was higher than that in fiber and ray, and the lignin concentration in cell wall of fiber followed a decreasing order of the cell corner, the complex middle lamella and the secondary cell wall.

Key words: Salix integra, chemical composition, lignin, distribution, different parts

中图分类号:

TQ35
S781.42

崔贺帅, 杨淑敏, 刘杏娥, 马建锋, 田根林. 杞柳的化学成分及其木质素微区分布的研究[J]. 林产化学与工业, 2016, 36(5): 120-126.

CUI He-shuai, YANG Shu-min, LIU Xing-e, MA Jian-feng, TIAN Gen-lin. Chemical Composition and Lignin Distribution of Salix integra[J]. Chemistry and Industry of Forest Products, 2016, 36(5): 120-126.

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