In vitro simulation studies of silica deposition induced by lignin from rice.

被引：29
作者：
Fang J.Y. [1 ]
Ma X.L. [1 ]
机构：
[1] Institute of Biodiversity Research, Huangshan University, Huangshan
来源：
Journal of Zhejiang University SCIENCE B | 2006年 / 7卷 / 4期
基金：
中国国家自然科学基金;
关键词：
Lignin; Silica precipitation; Higher plants; Q58; Q811;
D O I：
10.1631/jzus.2006.B0267
中图分类号：
学科分类号：
摘要：
To reveal the possible mechanism of silica deposition in higher plants, lignin was isolated from rice straw following a modified method to conduct a simulation experiment in vitro. UV and infrared absorption spectra showed that the substance had the unique characteristics of pure lignin. The presence of silicon in the precipitation was revealed by TEM (transmission electron microscopy) with EDXA (energy dispersive X-ray analysis) device. It was found that in the borax solution where lignin precipitation occurred silica-lignin co-precipitation was produced but not in the DMSO solution where lignin was broken into its composition compounds and did not precipitate. This means that it is macromolecular lignin itself but not its compounds that could induce silica deposition in higher plants.
引用
收藏
页码：267 / 271
页数：4
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