采用浓硝酸和酶处理后麦麸成分的变化规律研究

麦麸是一种典型的木质纤维素类生物质.本文研究了应用85%的浓硝酸和酶对麦麸进行前期处理和糖化处理之后的成分变化规律.结果表明,在50℃以下温度和60 min的处理时间之内,提高浓硝酸处理温度或者延长处理时间均有利于原料水溶部分质量比例的提高;有利于水溶部分中木糖,阿拉伯糖、葡萄糖等糖类成分含量的增加;有利于高分子量的碳...

Effects of Concentrated Phosphoric Acid Pre-treatment and Enzymatic Saccharification on the Wheat Bran Ingredients

Wheat bran is a typical lignocellulose material.The wheat bran was pre-treated by concentrated phosphoric acid(85%), followed by enzymatic saccharification.The results showed that,when the pre-treated temperature and time were set at 50℃and 60 min, respectively,the higher temperature or longer pre-treated time led to the increase the yields of water soluble part of wheat bran and the contents of xylose,arabinose and glucose in the water soluble part.Besides,the pretreatment was good for hydrolysis of the polysaccharide to monosaccharide or oligosaccharides.Analysis of the material treated by enzyme saccharification showed that increase of the temperature and incubation time can improve the yield of cellulose from the wheat barn and the sugar yield.The pre-treatment was good for the enzymatic hydrolysis of cellulose but hemicelluloses.