生物质化学工程2012，Vol.46Issue(5)：29-32,4.
超临界二氧化碳及超声预处理促进玉米芯水解制备还原糖研究
Preparation of Reducing Sugars via Accelerated Hydrolysis of Corncob by Supercritical Carbon-dioxide and Ultrasonic Pretreatment
罗鹏 1王恩俊 1徐琴琴 1银建中1
作者信息
- 1. 大连理工大学化工机械学院,辽宁大连116023
- 折叠
摘要
Abstract
Reducing sugars can be derived from biomass hydrolysis. The corncob hydrolysis was conducted after supercritical carbon dioxide pretreatment and ultrasonic pretreatment. The effects of pretreatment temperature, moisture content, temperature and time of ultrasonic on the yield of the reducing sugars were emphasized. The result shows showed that the optimum conditions of corncob supercritical carbon dioxide pretreatment were 100~C, 50 % moisture content, 30 min and 15 MPa. The optimum conditions of corncob ultrasonic pretreatment were 59 kHz,90 W and 20 min. The pretreated corncob was hydrolysised with 1% dilute sulphuric acid under the condition of 160℃, 40 min and liquid to solid ratio of 50: 1. The highest yield of reducing sugars is 39.5 % and 38.4 % , respectively. Compared with the control sample, the yield of the reducing sugars was increased by 13.3 and 12.2 percent point, respectively.关键词
玉米芯/超临界二氧化碳预处理/超声预处理/水解/还原糖Key words
corncob/supercritical carbon-dioxide pretreatment/ultrasonic pretreatment/hydrolysis/reducing sugars分类
化学化工引用本文复制引用
罗鹏,王恩俊,徐琴琴,银建中..超临界二氧化碳及超声预处理促进玉米芯水解制备还原糖研究[J].生物质化学工程,2012,46(5):29-32,4.
