摘要
利用双螺杆挤出机对白菜渣进行挤压处理,研究了物料含水量,机筒温度及螺杆转速等挤压参数对白菜渣可溶性膳食纤维含量的影响。以白菜渣SDF含量为指标,通过单因素试验及Box-Behnken试验设计结合响应面分析方法,优化了挤压参数,得到在研究范围内最优的挤压参数为:物料含水量30%,机筒温度122℃,螺杆转速150 r/min。在此条件下进行挤压处理,得到的白菜渣SDF含量为11.06%,相比原白菜渣提高了3.57%。结果证明,挤压处理能够显著的提高白菜渣SDF含量。
Cabbage residue was extruded using a twin screw extruder. Study the effect of the independent variables including moisture contents of materials, barrel temperatures and screw speed on the content of soluble dietary fiber（SDF）. After the single factor test has been conducted, the Box-Behnken experimental design combined with response surface methodology was used to optimize the extrusion parameters for the highest yield of SDF. The optimum extrusion parameters were as follows： moisture contents of materials 30%, barrel temperature 122 ℃, and screw speed 150 r/min. Under this condition, the SDF content of cabbage residue could reach to 11.06% which increased 3.57% compared with the original cabbage residue. The results indicated that the extrusion could obviously improve the content of SDF of cabbage residue.
出处
《食品工业》
北大核心
2014年第10期96-99,共4页
The Food Industry
关键词
白菜渣
可溶性膳食纤维
挤压膨化
cabbage residue
soluble dietary fiber（SDF）
extrusion
