摘要
挤压膨化可以破坏细胞壁,减少传统水酶法提取米糠油中酶种类的应用和获得较高的提油率。研究挤压膨化参数(物料含水率、挤压温度、螺杆转速、模孔直径)对水酶法提取米糠油得率的影响规律,并利用响应面法对挤压参数进行了优化。得到最优参数为:物料含水率14%、模孔直径18mm、挤压温度110℃、螺杆转速105 r/min,且在只使用一种碱性蛋白酶情况下提油率达到89.61%,比蒸汽预处理复合酶提米糠油(85.76%)提高4%左右。
Extrusion can destroy the cell walls, reduce types of enzyme compared with traditional aqueous enzymatic extraction of rice bran oil in the traditional craft and obtain higher oil extraction rate. The study researched the effects of extrusion parameters （material moisture, extrusion temperature, screw speed, die-hole diameter） on yield of rice bran oil in extracted by aqueous enzymatic method, and applied response surface method to optimize it. Optimal parameters are material moisture 14% , die-hole diameter 18mm, extrusion temperature 110℃, screw speed 105r/min. Using only one alkaline proteasc--Protex-6L, the oil extraction rate reached 89.61% , higher 22% than that without extrusion.
出处
《农机化研究》
北大核心
2014年第8期134-138,共5页
Journal of Agricultural Mechanization Research
基金
国家"863计划"项目(2013AA102104)
农业部现代农业产业技术体系建设项目(nycytx-004)
关键词
米糠油
水酶法
挤压
提油率
响应面
rice bran oil
aqueous enzymatic method
extrusion
oil extraction rate
response surface
