高效提取甘蔗尾半纤维素的工艺研究OA

Utilizing sugarcane tops as raw material,a major agricultural waste product in Guangxi,the multi-component decrystallizing depo-lymerization agent pretreatment effectively disrupted the stable and compact structure of the lignocellulose components in sugarcane tops.Subsequently,the hemicellulose component of sugarcane tops was efficiently separated and extracted via water extraction/alcohol precipita-tion method.The pretreatment conditions for extracting hemicellulose in the sugarcane tops were optimized through single-factor and orthogo-nal experiments.The results showed that the optimum extraction process conditions were 200 μL for multi-component decrystallizing depoly-merization agent dosage,35％for sugarcane tops moisture content,120℃ for pretreatment reaction temperature,and 3 h for reaction time.Under the optimized conditions,the extraction yield of hemicellulose from the sugarcane tops reached(14.0±0.5)％.The Fourier Transform Infrared Spectroscopy,Scanning Electron Microscopy,and Thermogravimetric Analysis indicated that the main chemical structure of the ex-tracted hemicellulose from the sugarcane tops was nearly undamaged after multi-component decrystallizing depolymerization agent pretreat-ment and it exhibited good thermal stability.