摘要
以玉米芯为原料,采用WO3/ZrO2固体酸进行预处理,然后发酵制备木糖醇。探讨了预处理温度、预处理时间、固体酸用量及液固比对木糖醇得率的影响。采用响应面法建立二次回归模型,并对预处理工艺进行了优化。研究结果表明固体酸预处理能有效的促进玉米芯降解,提高木糖醇的得率。当预处理温度为110.76℃、预处理时间为60.71 min、固体酸用量为4.14%时,木糖醇的得率比相同条件下未进行固体酸预处理的试样提高了25.21%。
Xylitol was made from corncob with WO3/ZrO2 solid acid pretreatment and fermentation.The effects of pretreatment temperature,pretreatment time,dosage of solid acid and solid/liquid ratio on the xylitol yield were discussed.The pretreatment process was optimized and analyzed with response surface methodology,and quadratic regression model was founded.The results showed that solid acid pretreatment could promote Corncob degradation and increase xylitol yield.The xylitol yield was increased 25.21 % as pretreatment temperature was 110.76 °C,pretreatment time was 60.71 min and the dosage of solid acid was 4.1 %.
出处
《食品研究与开发》
CAS
北大核心
2011年第4期53-56,共4页
Food Research and Development
基金
湖南省教育厅科技项目(08D124)
