蒸汽爆破预处理降解香蕉茎秆纤维素组分的研究  

Effect of Pretreatment by Steam Explosion on Degradation of the Banana Stalk Component

作　　者：郑丽丽[1] 韩冰莹[2] 盛占武[1] 陈娇[1] 李奕星[1] 赵立欣[3] 

机构地区：[1]中国热带农业科学院海口实验站/海南省香蕉遗传改良重点实验室,海南海口570102 [2]中国热带农业科学院热带生物技术研究所,海南海口571701 [3]农业部规划设计研究院/农业部农业废弃物能源化利用重点实验室,北京100125

出　　处：《热带农业科学》2014年第11期84-88,共5页Chinese Journal of Tropical Agriculture

基　　金：农业部农业废弃物能源化利用重点实验室开放课题(No.KLERUAR2013-03)

摘　　要：分析测试香蕉茎秆总固体含量(TS)和挥发性固体含量(VS)及香蕉茎秆固体剩余物中纤维素、半纤维素、木质素含量;采用蒸汽爆破法对香蕉茎秆进行预处理,探讨不同压力及维压时间下对香蕉茎秆中半纤维素、纤维素、木质素组分的降解程度,分析蒸汽爆破预处理优缺点。试验结果表明,经过蒸汽爆破预处理后,香蕉茎秆的组分被不同程度破坏,当压力为3.5 MPa,维压时间为4 min时,香蕉茎秆中半纤维素含量由预处理前13.33%降至4.36%,降解率高达67.29%,纤维素含量由48.33%降至39.15%,降解率为18.99%,木质素含量由14.62%降至6.52%,降解率为55.40%,总体含量由76.28%降至50.03%,降解率为34.41%。说明蒸汽爆破技术对香蕉茎秆固体剩余物的预处理效果比较显著,有一定的优越性。Total solids content （TS） and volatile solids content （VS） of banana stalk were tested, and the content of cellulose, hemicellulose and lignin. Pretreatment banana stalk by steam explosion with different pressures and different time of keeping pressure. Analysis of degradation law of banana stalk hemicellulose, cellulose and lignin content after pretreatment. The samples of the treated and untreated banana stalks were with drawn to determined cellulose, hemicelluloses and lignose contents in dry matter. The results showed that when the explosion pressure was 3.5MPa, the time of maintain steam explosion pressure was 4min, degradation rate of hemicellulose, cellulose and lignin was 67.29%, 18.99%, and 55.40%, degradation rate of the overall content was 34.41%, These results indicate that pretreatment by steam explosion can degrade cellulose of banana stalks, and hemicellulose、 lignin were degraded significantly. The method of steam explosion are further advantages such as environmentally friendly and high-efficiency.

关 键 词：蒸汽爆破 预处理 香蕉茎秆 降解率 

分 类 号：S141.4[农业科学—肥料学] TQ353.421[农业科学—农业基础科学]