关键词: 挤压技术, 质构, 响应曲面法

Abstract: The production process of extruded rice was optimized to provide theoretical references for its exploitation and economic value. Several one-factor-at-a-time experiments were conducted to preliminarily explore three process parameters including extrusion die head temperature, water content, and screw speed. Thereafter, we used response surface methodology to establish the optimum process conditions based on comprehensive consideration of texture and water absorption. The optimum process parameters that met practical production conditions were 90 ℃, 25% and 180 r/min for extrusion die head temperature water content and screw speed, respectively. The comprehensive evaluation score of extruded rice obtained under these conditions was 76.67. The proposed optimum production parameters are reliable and have the potential for practical applications.

Key words: extrusion, texture, response surface methodology