双螺杆挤压复合杂粮米的工艺优化  

Optimization of Twin-screw Extrusion Process of Composite Grains-rice

作　　者：邓力[1,2] 何腊平[1,2] 李秋萍 李静鹏[1,2] 崔波[3] 

机构地区：[1]贵州大学生命科学学院,贵州贵阳550025 [2]贵州省农畜产品贮藏与加工重点实验室,贵州贵阳550025 [3]山东轻工业学院食品与生物工程学院,山东济南250353

出　　处：《农产品加工（下）》2013年第11期35-39,42,共6页Farm Products Processing

基　　金：贵阳市科学计划项目生物重大专项([2010]筑农合同字第8-1号);贵州省科技支撑计划项目(黔科合NY字[2011]3099号);贵州农畜产品贮藏与加工重点实验室建设(黔科合计Z字[2012]4001)

摘　　要：借助双螺杆挤压机通过单因素试验和Box-Behnke设计,研究机筒温度、水分含量、螺杆转速和喂料速度4个挤压操作参数对高营养复合杂粮米的糊化度、复水性及整体质构的影响以及优化工艺参数。经响应面分析最终确定最优工艺参数是机筒温度157℃,水分含量17%,螺杆转速183 r/min,喂料速度232 g/min,在此工艺条件下复合杂粮米的糊化度为82.10%,与响应面分析得的预测值仅差0.49%,这表明此工艺具有潜在的工业化应用价值。Effect of barrel temperature, moisture content, screw speed and feed rate on gelatinization, rehydration and texture properties of the composite grains-rice with high nutrition are studied to optimization of process parameters with the twin-screw extruder by single factor test and Box-Behnke design. The optimal process parameters are as follows： barrel temperature of 157 ℃, 17% moisture content, screw speed 183 r/min, the feeding speed 232 g/min by response surface analysis. Under these conditions, 82.10% gelatinization of the composite grains-rice is gained, just under 0.49% of the predictive value by response surface analysis and it shows that this orocess has a potential value of industrial application.

关 键 词：双螺杆挤压 复合杂粮米 Box-Behnke设计 糊化度 

分 类 号：TS213.2[轻工技术与工程—粮食、油脂及植物蛋白工程]