食品工业科技2012，Vol.33Issue(14)：269-271,275,4.
挤压参数对小麦淀粉挤出物截面膨化率的影响
Effect of extrusion parameters on sectional expansion index of wheat starch extrudates
摘要
Abstract
The aim of this paper was to investigate the effect of barrel temperature,moisture content and Specific Mechanical Energy（SME） on Sectional Expansion Index（SEI） of wheat starch extrudates. Wheat starch, which was collected from market,was extruded with a Brabender DSE-25 twin-screw extruder. The relationships between barrel temperature,moisture content and SEI were analyzed using statistic methods of regression analysis and variance analysis. The result showed that when temperature was at the range of 160-210℃ and the moisture content was 17%,the average,range,and Cofficient of Variation（CV） of SEI were 5.18,2.91-8.67 and 39.38% separately. When moisture content was at the range of 15%-23% and temperature was 210℃,the average,range,CV of SEI was 2.10,1.13-2.91 and 36.67%. Barrel temperature and moisture content were related very well with SEI through linear equation and quadratic equation,and the equation determination coefficient were 0.909 and 0.673,respectively. It was concluded that the effect of barrel temperature and moisture content on SEI were significant.关键词
小麦淀粉/挤压膨化/工艺参数/截面膨化率/单位机械能耗Key words
wheat starch/extrusion/process parameters/Sectional Expansion Index/Special Mechanical Energy分类
轻工纺织引用本文复制引用
刘超,张波,魏益民,冯攀屹,钟耕..挤压参数对小麦淀粉挤出物截面膨化率的影响[J].食品工业科技,2012,33(14):269-271,275,4.基金项目
公益性行业（农业）科研专项 （）
小麦产业技术体系建设专项（CARS-03）. （）
