摘要
根据大豆膨化物料浸出过程中浸出时间与粕残油率之间的变化规律,推导出与之相适应的浸出方程。经36组试验验证有较好的拟合度。同时,在所建模型的基础上,建立了粕残油率为1%(干基)时,挤压参数与油脂浸出时间的回归模型,可根据挤压参数较好地预测膨化物料的浸提时间。
A mathematical model was developed to quantitatively analyze the rate of soybean oil extraction at varying extrusion parameters including material moisture, expanding temperature, the die length, the length of section 8 and the rotate speed of screw. Kinetic parameters were estimated and correlated with the oil concentration of extrusion soybean products at different extraction time. The kinetic model identified microstructure development upon varying extrusion conditions. By analyzing characteristics of soybean fat globules for different extrusion masses, it showed that positive correlation between the size of fat globules and the diffusivity index. To enhance oil availability and extractability, the quantity models were developed to describe the relations of varying extrusion parameters and extraction time when the ratio of residual oil of soybean meals was 1%, it was used to obtain optimal extraction time for different extrusion conditions. Observed experimental oil extraction data fitted well with the developed soybean mathematical models.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2008年第10期113-118,共6页
Transactions of the Chinese Society for Agricultural Machinery
关键词
大豆
浸出动力学
挤压膨化
油脂提取
残油率
Soybean, Extraction kinetic, Extruding-expelling, Oil extraction, Residual oil rate
