造纸蒸煮废液水解制糖的研究  

Sugar Preparation from Pulping Black Liquor by Hydrolysis

作　　者：杨静[1,2,3,4] 蒋剑春[1,2,3,4] 张宁[1,2,3,4] 卫民[1,2,3,4] 赵剑 

机构地区：[1]中国林业科学研究院林产化学工业研究所 [2]生物质化学利用国家工程实验室 [3]国家林业局林产化学工程重点开放性实验室 [4]江苏省生物质能源与材料重点实验室,江苏南京210042

出　　处：《林产化学与工业》2013年第2期119-122,共4页Chemistry and Industry of Forest Products

基　　金：林业公益性行业专项(201004001)

摘　　要：考察了马尾松硫酸盐法制浆蒸煮废液水解制糖,结果显示同酸水解相比,酶水解效率较高。脱木质素后再进行酶水解,水解液中还原糖可达到9.18 g/L。脱木质素的最佳条件为pH值3.0,温度75℃,硫酸质量分数6%,此时上清液中的半纤维素质量浓度最高,达到47.61 g/L。对脱木质素后酶水解液做液相色谱分析,发现水解液中主要为葡萄糖3.63 g/L,其次为木糖醇2.94 g/L和纤维二糖1.81 g/L,并有少量木糖和阿拉伯糖,质量浓度分别为0.80和0.02 g/L。The reducing sugar preparation by various hydrolysis methods from sulfate pulping black liquor of Pinus massoniana was investigated in present study. The results indicated enzymatic hydrolysis had high efficiency on sugar reducing in contrast to acid hydrolysis. A reducing sugar content of 9.18 g/L was obtained by enzYmatic hydrolysis after delignification. And the optimum conditions for delignification was conducted as black liquore was hydr01yzed by 6% , sulfuric acid solution at 75~C under pH 3.0 environment. The highest hemicellulose content of 47.61 g/L was obtained in the supernatant residual. The dominant products in hydrolysate were 3.63 g/L glucose, followed by 2.94 g/L xylitol and 1.81 g/L eellobiose. But small amounts of xylose and arabinose were obtained, and their contents, represented 0.80 and 0.02 g/L respectively.

关 键 词：黑液 半纤维素 水解 还原糖 

分 类 号：TQ35[化学工程]