响应面法优化玉米秸秆饲料的蒸汽爆破加工工艺  

Optimization of corn straw stem explosion with the response surface

作　　者：李国栋[1,2] 赵圣国[2] 方伟[1] 苏效双 杜兵耀 贡笑笑 赵国琦[1] 

机构地区：[1]扬州大学动物科学与技术学院,江苏扬州225009 [2]中国农业科学院北京畜牧兽医研究所动物营养学国家重点实验室,北京海淀100193

出　　处：《中国饲料》2017年第3期41-44,共4页China Feed

基　　金：江苏省农业三新工程项目(SXGC[2016]326)

摘　　要：为了确定蒸汽爆破预处理玉米秸秆饲料的最优反应条件,以汽爆玉米秸秆还原糖得率为指标,根据BoxBehnken试验设计原理,分析了蒸汽压强、维压时间和预浸水分含量对玉米秸秆还原糖得率的影响,并建立了数学模型。结果表明:蒸汽压强和维压时间对汽爆玉米秸秆水解还原糖得率有显著影响(P<0.01),水分预浸增强了秸秆预处理效果。在考虑实际生产与汽爆后秸秆饲料感官特性前提下,最优汽爆条件为蒸汽压强2.2 MPa,维压时间200 s,预浸水分含量10%的条件下,汽爆玉米秸秆的还原糖得率可达4.33%。Corn straw is an agricultural residue with great potential as feed for ruminants.In this study, steam explosion was carried out as a pretreatment to increase the reducing sugar yield of corn straw.Experimental statistical design and response surface methodology were used to evaluate the influence of steam pressure, process time and moisture content.The results showed that steam pressure and process time had significant effect on the reducing sugar of corn straw （P 〈 0.01 ）.Moisture content promoted the steam effect of corn straw.In the steam pressure of 2.2 MPa,process time of 200 s and moisture content of 10% conditions, the reducing sugar yield of steam-exploded corn straw was up to 4.33%.

关 键 词：玉米秸秆 蒸汽爆破 还原糖得率 响应面 

分 类 号：S816.9[农业科学—饲料科学]