食品与机械2017，Vol.33Issue(12)：174-179,6.DOI:10.13652/j.issn.1003-5788.2017.12.035
微波辅助稀酸降解玉米芯的工艺优化及其效果研究
Study on optimization and effect of microwave assisted dilute acid degradation of corn cob
朱李妍 1杨晓瑞 1王伟 1梁金花 1朱建良1
作者信息
- 1. 南京工业大学生物与制药工程学院,江苏 南京 211800
- 折叠
摘要
Abstract
In order to improve the utilization rate and economic benefit of lignocellulose,the hydrolysis of corncob was studied by the method of using dilute acid as catalyst under microwave irradiation. Through single factor and orthogonal way,the influences of micro-wave radiation time,microwave power,acid concentration,solid-liq-uid ratio and particle size of corncob were discussed with sugar yield and raw material conversion rate as index;Raw materials and three methods of treatment of hydrolyzed residue were analyzed by scanning electron microscopy (SEM)and infrared spectroscopy (FT-IR).The results showed that the optimal reaction conditions were as follow:corncob was crushed to 60~80 mesh,the solid-liquid ratio was 1︰8 (g/mL),the acid concentration was 13%,the microwave power was 130 W,and the reaction time was 20 min.At this time the yield of reducing sugar was 66.41%,the conversion rate of raw materials was 52.70%.SEM and FT-IR analysis showed that the effect of microwave acid was good,and the surface structure of the corncob after the reaction was seriously damaged.In the corncob hy-drolytic residue of microwave radiation and dilute acid catalyzed,the hemicellulose was completely hydrolyzed,and some of the cellulose was hydrolyzed.关键词
微波辐射/稀硫酸/得糖率/原料转化率Key words
microwave radiation/dilute sulfuric acid/sugar yield/raw material conversion rate引用本文复制引用
朱李妍,杨晓瑞,王伟,梁金花,朱建良..微波辅助稀酸降解玉米芯的工艺优化及其效果研究[J].食品与机械,2017,33(12):174-179,6.
