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林产化学与工业

林产化学与工业 ›› 2003, Vol. 23 ›› Issue (3): 81-84.

• 研究报告 • 上一篇    下一篇

微波法提取木材中的阿拉伯半乳聚糖

方桂珍, 黄占华, 李淑君, 金钟玲   

  1. 东北林业大学 材料科学与工程学院, 黑龙江 哈尔滨 150040
  • 收稿日期:2002-11-21 修回日期:1900-01-01 出版日期:2003-09-30 发布日期:2003-09-30

MICROWAVE EXTRACTION OF ARABOGALACTAN FROM WOOD

FANG Gui-zhen, HUANG Zhan-hua, LI Shu-jun, JIN Zhong-ling   

  1. College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
  • Received:2002-11-21 Revised:1900-01-01 Online:2003-09-30 Published:2003-09-30

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摘要： 以兴安落叶松(Larix gmelinii Rupr.)木材的加工剩余物为原料,利用微波效应,以水为溶剂来提取其中的阿拉伯半乳聚糖。通过实验设计考察了微波提取的条件即微波功率、作用时间、木粉粒度、料液比等因素对提取物产率的影响,从而确定较佳的提取工艺:微波功率为490W,作用时间为25min,料液比为1:35,木粉粒度为0.20～0.30mm。微波提取法提取物产率可以达到17.47%。并在此基础上将微波提取方法与传统提取方法进行分析比较得出:微波提取法的提取率比传统水浴提取法的提取率高出1.6%,在所用时间上仅用了1/12,同时利用红外光谱对提取物进行了分析。

关键词: 微波提取, 兴安落叶松木材, 阿拉伯半乳聚糖

Abstract: Arabogalactan was extracted from wood flour of Larix gmelinii Rubr.with water under microwave radiation.Effects of microwave power, extraction time, wood flour particle size and ratio of solid to liquid on the yield were investigated.Optimum extraction parameters were obtained as follows:490 W microwave power, 25 min, 1:35 ratio of solid to liquid(by mass), 0.20-0.30 mm wood flour particle size.Under these conditions, the extraction yield was 17.47%, which was 1.6% higher than that from the traditional water bath extraction.Extraction time by the new method was just 1/12 of that by the traditional method.FTIR spectra analysis indicated that structural characteristics of the extractives obtained under microwave radiation were almost identical to those from the traditional method.

Key words: microwave extraction, Larix gmelinii Rupr.wood, arabogalactan

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