食品科学 ›› 2008, Vol. 29 ›› Issue (12): 381-384.

• 工艺技术 • 上一篇    下一篇

挤压法制备大米抗性淀粉中系统参数控制与目标参数的关系

 李俊伟, 唐书泽, 张志森, 汪勇   

  1. 暨南大学理工学院;
  • 出版日期:2008-12-15 发布日期:2011-12-08

Relationship between System Parameters and Target Parameter of Extrusion in Resistant Rice Starch Preparation

 LI  Jun-Wei, TANG  Shu-Ze, ZHANG  Zhi-Sen, WANG  Yong   

  1. College of Science and Engineering,Jinan University,Guangdong 510632,China
  • Online:2008-12-15 Published:2011-12-08

摘要: 采用正交试验,进行挤压法制备大米抗性淀粉的研究,得到了挤压法制备大米抗性淀粉的最佳工艺条件:大米粉水分含量40%,挤压机腔体170℃,螺杆挤压频率35Hz,储藏时间7d,储藏温度4℃,喂料机喂料频率20Hz。在此工艺下,抗性淀粉得率8.77%,与原料相比,抗性淀粉含量提高了近7倍。在正交试验的基础上,建立了反映挤压法制备大米抗性淀粉中系统参数控制与目标参数关系的回归方程:Yi=-4.1408+0.1655XA+0.0402XB+0.0069XC-0.0299XD+0.0586XE+0.0911XF

关键词: 挤压, 大米粉, 抗性淀粉, 回归方程

Abstract: The effect of extrusion cooking on the resistant starch(RS) yield,made from rice flour,was studied by using the orthogonal test method. It was concluded that the optimal preparation conditions of RS are moisture of rice flour 40%(dry basis) ,barrel temperature extruder 170 ℃,screw frequency 35 Hz,feeding rate 20 Hz,storage time 7 d and temperature 4 ℃. Under these conditions he RS yield is 8.77%,and the RS content in the product is almost 7 times more than that in the material. A regression equation was also concluded to describe the relationship between the system parameters and the target parameter:Yi=-4.1408+ 0.1655XA + 0.0402XB +0.0069XC-0.0299XD +0.0586XE +0.0911XF.

Key words: extrusion, rice flour, resistant starch, regression equation