目的:以文冠果种皮醇提残渣为原料,经稀硫酸高温短时水解、中和、脱色、低温结晶,分离木糖、低聚木寡糖糖浆.方法:在单因素实验的基础上,通过正交试验法研究水解温度(A)、硫酸浓度(B)、料液比(C)、水解时间(D)对木糖得率的影响.结果:文冠果种皮渣水解制备木糖的最佳工艺条件为硫酸浓度1.5 mol·L-1,料液比1∶5,温度90℃,水解时间5h,该条件下木糖的的产量最高可达文冠果种皮干燥基质量的11％,工艺条件稳定;活性实验研究显示,以文冠果种皮制备的木糖具有良好的促乳酸菌生长作用.结论:文冠果种皮是适合制备木糖的原料,同时有助于提高文冠果产业的经济附加值,具有开发前景.%Objective:To prepare xylose by using the seed capsule of Xanthoceras sorbifolia as the raw material under sulfuric acid hydrolysis.Methods:The orthogonal experiment was applied to study the effect of reaction temperature (A),concentration of sulfuric acid (B),solid-liquid ratio (C),and reaction time (D) on the yield of xylose.Results:The main influence factors for yield of xylose were sulfuric acid concentration and temperature,the optimized preparation conditions were as follows:sulphuric acid concentration 1.5 mol·L-1,liquid ratio 11∶5,temperature 90 ℃,and reaction time 5 h,under this condition the yield of xylose could be up to 11.00％.Activity study showed that xylose prepared from X.sorbifolia has good effect to promote the growth of lactic acid bacteria.Conclusion:The seed capsule of X.sorbifolia is suitable for the preparation of xylose,this process can also help to improve the economic value of X.sorbifolia industry with development prospects.
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