不同处理的精制玉米麸皮单糖组分及阿魏酸含量分析

摘要

对去除淀粉和蛋白质的精制玉米麸皮进行酸碱处理，得到酸解产物和碱解产物，用高效液相色谱对精制玉米麸皮、酸解产物及碱解产物的单糖组成及阿魏酸进行分析。结果显示：酸解产物含有44．5％的木糖、20．8％的阿拉伯糖和4．57％的阿魏酸，推测其主要成分是阿魏酸阿拉伯木聚糖；碱解产物含有50．3％的木糖、24．5％的阿拉伯糖，阿魏酸基本未检出，推测其主要成分是阿拉伯木聚糖；玉米麸皮含有3．5％的阿魏酸。%Refined corn bran （RCB） obtained by removing starch and protein was treated with acid or alkali to obtain acid hydrolysate （HAC） and alkaline hydrolysate （HAL）. The monosaccharide composition and ferulic acid content of RCB, HAC and HAL were analyzed by HPLC. The results showed that the major components of HAC were feruloylated arabinoxylan, containing 44.5% of xylose, 20.8% of arabinose and 4.5% of fernlic acid. HAL was mainly arabinoxylan, containing of 50.3% xylose, 24.5% of arabinose and trace amount of ferulic acid. RCB contained 3.5% of ferulic acid.