以反應曲面法探討擠壓產品物性之研究

The Study of Extrudate's Physical Properties with Response Surface Methodology

陳忠智(Jong-Jyh Chen) ； 彭錦樵(Jinchyau Peng)

《農業機械學刊》 5卷3期 (1996/09) Pp. 29-39

https://doi.org/10.30062/JAM.199609.0003

摘要

擠壓技術具有產能高、多樣化、成本少及污染低等優點。本研究目的在利用單軸擠壓機試製膨發性產品，探討模具之孔數與孔徑對不同玉米與米之調配比例所造成的理化性狀變化情形；並利用反應曲面法作迴歸分析，以建立自變數對反應性狀之評估模式。
實驗結果顯示：當擠壓機之模具孔數或孔徑減少時，會造成物料擠壓阻力增加，擠壓機內部壓力的上升。因之，模具孔數由2孔增至4孔時，產品之假密度上升；模具孔徑由3 mm增至5 mm時，產品之破碎力呈明顯上升、軸向膨發及徑向膨發均呈明顯下降趨勢。

關鍵字

反應曲面法 ； 擠壓 ； 模具

並列摘要

Extrusion cooking has several advantages, such as high productivity, variety, low production cost and low pollution. The purposes of this study were using response surface methodology to investigate the effects of process variables (die diameters and numbers, rice contents) on the physical properties of extrudates. Experimental results showed that: Reducing the die numbers and diameters would increase the restriction of the dough and internal pressure before the die. Therefore, increasing the die numbers resulted an increase in extrudates bulk density; and increasing the die diameters raised the extrudates breaking force, but reduced the longitudinal and radial expansion.

並列關鍵字

Response surface methodology ； Extrusion ； Die