Refining crude oil of soybean by immobilized phospholipase

Abstract

This invention relates to a method for refining crude soybean oil with immobilized phosphatidase. The method solves the problems of unable control of temperature and pH value, poor degumming effect of soybean oil, and high cost faced by the present enzyme degumming method. The method in this invention comprises: preparing the reactive solution, preparing a mixed solution, preparing granular immobilized phosphatidase, pre-treating crude soybean oil, adding immobilized phosphatidase into crude soybean oil, stirring and centrifuging. The method has such advantages as high degumming efficiency (increased by 0.5-2%) and low cost (decreased by 1-3%).

Description

technical field

[0001] The present invention relates to a method for refining soybean oil. Background technique

[0002] Crude soybean oil contains about 3% phospholipids, which are directly related to the flavor and stability of oil products and the phenomenon of oil foaming and braining during use. The phospholipids to be removed in the degumming process can be roughly divided into Hy-dratable Phospholipids (HP) and Nonhydratable Phospholipids (NHP) have certain differences in properties and removal processes. The hydratable phospholipids are relatively easy to remove, while the non-hydratable phospholipids are difficult to remove by direct hydration. After decades of development, especially the successful implementation of physical refining, people have introduced a variety of degumming methods, such as using traditional hydration degumming, simple acid degumming, Special degumming and enzyme degumming, etc. Enzyme degumming is known for its good More and more attention...