杂交狼尾草碱预处理研究  

Study on Different Alkali Pretreatment of Hybrid Pennisetum

作　　者：邱雁斌 秦向东[1,2] 赵艳[1,2] 杨姝[1,2] 杨扬[1,2] 李泽[1] 赵红梅[1,2] 

机构地区：[1]云南农业大学基础与信息工程学院,昆明650201 [2]云南省高校生物天然气产业化技术工程研究中心,昆明650201

出　　处：《云南化工》2016年第1期11-14,27,共5页Yunnan Chemical Technology

基　　金：云南省高校工程研究中心建设项目;云南农业大学校企合作项目(KX140811;KX141111)

摘　　要：采用不同碱对杂交狼尾草进行预处理,探讨碱预处理前后杂交狼尾草主要成分含量的变化。利用固态化学预处理方法,研究了氢氧化钠、氢氧化钙、氨水、尿素对杂交狼尾草的预处理。并采用范式纤维洗涤法对碱预处理后杂交狼尾草的纤维素、半纤维素、木质素含量进行了分析。结果表明,碱预处理后的酸性洗涤纤维、中性洗涤纤维、半纤维素含量明显比预处理之前的低。Na OH预处理,Na OH质量分数为8%时,木质素含量最低,为5.28%;Ca(OH)2预处理,Ca(OH)2质量分数为2%时,木质素含量最低,为5.69%;氨水预处理,氨水质量分数为8%时,可使木质素含量最低,为5.12%;尿素预处理,尿素质量分数为6%时木质素含量最低,为4.38%。显然,采用6%尿素处理得到的木质素含量较低。In order to investigate the changing of main components in Hybrid Pennisetum before and after the alkali pretreatment,different alkali of pretreatment of Hybrid Pennisetum were used.By the solid -state chemical pre treatment method,the pretreatment of Hybrid Pennisetum by sodium hydroxide,calcium hydroxide,ammonia and urea are studied.The contents of cellulose;hemicellulose and lignin were analyzed by Paradigm fiber washing method.The results showed that the contents of acid detergent fiber,neutral de-tergent fiber and hemicellulose decreased significantly after pretreatment.When the concentration of NaOH was 8%,the content oflignin was 5.28%;When the concentration of Ca(OH)2 was 2%,the content oflig-nin was 5.68%;When the concentration of ammonia was 8%,the content oflignin was 5.12%;When the concentration of urea was 6%,the content oflignin was 4.38%,which was best in the four pretreatments.

关 键 词：杂交狼尾草 碱 预处理 纤维素 半纤维素 木质素 

分 类 号：TQ914.1[化学工程]