粮油食品科技

中国科技核心期刊

玉米芯生产低聚木糖脱色工艺研究
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Study on the decolorization of xylo-oligosaccharides from corncobs
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    摘要:

    研究了玉米芯生产低聚木糖的脱色工艺。采用由木聚糖酶和纤维素酶组成的复合酶对玉米芯进行水解生产低聚木糖,通过活性炭对低聚木糖提取液脱色工艺进行优化。结果表明,低聚木糖活性炭脱色的最佳工艺条件为:温度为40 ℃,脱色时间30 min,活性碳添加量20%,可溶性总糖含量11 mg/mL。产品脱色率可达68.93 %,还原糖损失率为34.75 %,脱色后的低聚木糖溶液经乙醇沉淀后制备低聚木糖,得率为11.58%。

    Abstract:

    The decolorization process of xylo-oligosaccharides from corncobs was studied. xylo-oligosaccharides were extracted from corncobs by complex enzyme, which consisted of xylanase and cellulose. The decolorization process of xylo-oligosaccharides extract was optimized with activated carbon. Result indicated that the optimal parameters were as follows: activated carbon amount 20%, total soluble sugar content 11 mg/mL, at 40 ℃ for 30 min. Under the optimal conditions, the decolorization rate and the loss rate of reducing sugar were 68.93 % and 34.75 %, respectively. The yield of xylo-oligosaccharides after ethanol precipitation was 11.58%.

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孙军涛,李亚欣,肖付刚,崔春利.玉米芯生产低聚木糖脱色工艺研究[J].粮油食品科技,2015,23(3):7-10.

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  • 在线发布日期: 2015-09-06
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