【摘要】 本文应用三氟乙酸水解磨甘蔗本素及磨甘蔗酶解本素,用糖腈乙酰酯衍生物气相色谱法对木素残留的碳水化合物组成进行了测定和研究。通过改进用肌醇乙酰酯为内标,气相色谱联用计算积分机,测定了鼠李糖、阿拉伯糖、木糖、甘露糖、葡萄糖、半乳糖等的校正因子,并缩短了衍生物制备时间和提高了定量分析的准确性。测得各单糖的回收率均在90％以上。更多还原

【Abstract】 Trifluoracetic acid (TFA) was applied for the hydrolysis of milled sugarcane skin lignin (MSL) and enzymatically isolated sugarcane skin lignin (ESL). The component of carbohydrate remained in both MSL and ESL was determined through aldononitrile derivatives by gas chroma-tography. The time of preparing aldononitrile derivatives was much less than that published before[l5], and the accuracy of results is higher than that of the original standard by preacetylated inositol and by using integrator connected with gas chromatograph. The response factors of arabinose, xylose, mannose, glucose and galactose are determined. The recoveries of the monosacc-harides in the analysis are all over 90%.更多还原