Preparation of high protein degossypoled cottonseed meal
To meet the market demand,enhance the utilization value of cottonseed meal,combined with the actual production situation,the single factor variable control method was used to adjust the key control parameters,such as the shell content of cottonseed kernel,methanol solution extraction process parameters and the cracking and screening conditions of finished products,to determine the production process of high protein degossypoled cottonseed meal using cottonseed kernel with 2％and 5％shell content as material.When the shell content of the raw material was 2％,the appropriate extraction process was soak extraction,material-liquid ratio 1∶3,soak extraction time 30 min,methanol solution extraction gradient 60％-70％-80％-90％,extraction times 4,the residual oil of cottonseed meal below 0.7％,and the moisture after desolventing and drying below 5％.At 5％shell content,the appropriate extraction process was liquid-liquid extraction,material-liquid ratio 1∶2,methanol solution extraction gradient 70％-70％-70％-70％-80％-90％,extraction times 6,the residual oil of cottonseed meal below 0.7％,and the moisture after desolventing and drying below 5％.Using these two methods,degossypoled cottonseed meal with crude protein content above 70％can be obtained with content of free gossypol meeting the requirements of internal control index(≤400 mg/kg).
万方数据
维普
