酸性电解水爆破处理灵芝废段木效果研究  

Effect of acid electrolyzed water explosion pretreatment on Ganoderma lucidum waste cut-log

作　　者：裴海生[1] 王民敬[1] 尹腾[2] 张秀清[2] 孙君社[1] 

机构地区：[1]农业部规划设计研究院,北京100125 [2]中国农业大学食品科学与营养工程学院,北京100083

出　　处：《中国酿造》2017年第1期79-82,共4页China Brewing

基　　金：国家自然科学基金(21176247)

摘　　要：随着灵芝产业的不断壮大,每年因种植灵芝而产生大量废段木。该文在对废段木组成成分分析的基础上,研究了酸性电解水爆破处理废段木酶解工艺。废段木经酸性电解水预煮后高温瞬时爆破处理来破坏组织结构及纤维素结晶状态,以半纤维素去除率和纤维素损失率为考察指标,通过单因素试验及正交试验确定了反应的最优爆破条件为酸性电解水p H 1.8、爆破温度180℃、爆破时间60 s、预煮液固比为20:1(m L:g)。此最佳条件下半纤维素的去除率为94.20%,纤维素的溶出率为12.57%;经酸性电解水爆破处理后酶解率达86.40%,爆破残渣酶解效果表明利用强酸性电解水爆破处理灵芝废段木能够有效破坏纤维素结晶状态,利于纤维素酶酶解。With the continuous development of Ganoderma lucidmn industry, a large number of waste cut-log was produced due to the cultivation of G. lucidum every year. Based on the analysis of waste cut-log components, the process of steam explosion pretreatment of waste cut-log with acid electrolysis water was studied. Taking hemicellulose removal rate and cellulose loss rate as evaluation index, the optimum reaction conditions were determined by single factor tests and orthogonal tests as follows： electrolysis water pH 1.8, explosion temperature 180℃, time 60 s, precook liq- uid-solid ratio 20：1 （ml：g）. Under these conditions, the hemicellulose removal rate was 94.20%, cellulose leaching rate was 12.57%, and finally cellulose enzymolysis rate can reach 86.40%. The results showed that using strong acidic electrolyzed water explosion treatment of G. lucidum waste cut-log can effectively destruct the crystalline state of celulose, enhance the enzymatic hydrolysis.

关 键 词：废段木 酸性电解水 蒸汽爆破 纤维素 半纤维素 

分 类 号：TQ353.6[化学工程]