玉米芯酸法提取木糖的工艺改进

Improvement on technology of extracting xylose from the corncobs by acid method

探讨了用酸法从玉米芯中提取木糖的工艺，并进行适当改进：得出最佳水解条件为1．5％H2SO4，100℃，水解4h；最佳中和条件为pH3．0.80℃，中和90min；最佳脱色条件为活性炭用量2％，70℃，脱色45min：并对离子交换条件进行改进，最终得到的木糖固形物的产率达18％-21％。

The technology of extracting xylose from the corncobs by acid has been discussed and a appropriate improvement has been done in this paper.Through orthogonal testes, we got a better way of extraction： firstly, hydrolyzing in 1.5% H2SO4 at 100℃ for 4h.Secondly, when neutralized by CaCO3, in pH3.0 at 80℃ for 90min. Decolonization technology was the amount of activated carbon 2%, at 70℃ for 45min.And then we improved the condition of ion exchange.After improving the experiment,the yield of solid matter containing xylose was from 18% to 21%.