| abstract |
The invention provides a method for refining diglyceride by dynamic circulation multistage molecular distillation, which comprises degassing and four-stage molecular distillation, wherein the four-stage molecular distillation is used for sequentially removing glycerol, free fatty acid, fatty acid monoglyceride, triglyceride and other impurities, and the degassing and each stage of molecular distillation are carried out for a plurality of times of circulation to finally obtain a target product. The method can improve the purity of the diglyceride in the product, and the obtained product has light color and high quality and meets the requirement of food grade. |