Processing method for extracting rice bran oil from low-temperature leached meal

Abstract

The invention discloses a processing method for extracting rice bran oil from low-temperature leached meal. In the method, the rice bran meal is soaked with anhydrous ethanol under a negative pressureenvironment so as to enable the anhydrous ethanol to rapidly enter internal channels of the rice bran meal to inhibit the activity of oxidase and lipase, so that the degreasing in a soaking manner isachieved, the storage period of the rice bran meal is prolonged, the progress of acidification is slowed down; further, the rice bran meal after degreasing reacts with citric acid buffer and high-temperature alpha-amylase to reduce the content of free fatty acids and stabilize the acid value, so that the oil obtained has the good quality, and the subsequent refining is convenient; and the rice bran oil is extracted by high-temperature pyrolyzing, so that the quantity of impurities is small, the oil quality is high, solvents, such as non-chemical solvent, are free, and the safety hidden dangers are reduced. The processing method provided by the invention is reasonable in structural design, stable in quality, complete in nutritional ingredient, and good in application prospect, thus being worthy of application.

Description

technical field [0001] The invention relates to the technical field of food deep processing, in particular to a processing method for extracting rice bran oil from rice bran oil by extracting rice at low temperature. Background technique [0002] Rice bran is one of the main by-products of rice processing, and it is also an agricultural by-product that has not been fully developed. The available rice bran resources are quite abundant, and the nutritional components such as protein, fat, oryzanol, and cellulose are all high in content. Generally, small and medium-sized enterprises mainly use rice bran meal as feed for livestock and poultry. In order to avoid enteritis and diarrhea caused by livestock and poultry after eating, the processing temperature will be increased; in addition, rice bran is very easy to oxidize and become rancid, so the temperature should be 4~6 Processing within h to heat stabilize the rice bran. In the process of reprocessing, rice bran meal is ofte...

AI Technical Summary

Problems solved by technology

In the process of reprocessing, rice bran meal is often treated with high temperature, damp heat, etc. to prolong its storage period. However, in the process of heat stabilization, the protein in rice bran meal is affected by high temperature, partially denatured, its structure is more complex, and the soluble protein is greatly reduced. Nutritional ingredients, the quality of rice bran oil or rice bran protein extracted therefrom is not high, therefore, based on the above problems, the present invention provides a processing method for low-temperature processing of rice bran meal and extraction of rice bran oil therefrom