Industrialized pretreatment method of high-temperature rice bran meal

Abstract

The invention aims to solve the problem of difficulty in filtration due to starch pasting when components such as phytic acid and dietary fiber in rice bran meal subjected to high-temperature extrusion stabilization and solvent method deoiling are industrially separated, amylodextrin is degraded at a low temperature by adopting amylase, and thus the filter characteristic of the defatted rice bran meal is improved; and on the basis, the phytic acid and the dietary fiber in the rice bran meal can be continuously separated. The main characteristic is that high-viscosity rice bran dextrin is degraded at a temperature of less than the rice bran starch pasting temperature by adopting a medium-temperature or high-temperature alpha amylase, and the situation that filter cloth is blocked in a subsequent separating process to seriously influence the whole separation process can be avoided on the premise that the rice bran starch is not excessively degraded.

Description

technical field [0001] The invention discloses an industrialized pretreatment method for high-temperature rice bran meal, which belongs to the field of deep processing of agricultural and sideline products. Background technique [0002] Rice bran is the main by-product of rice processing. The rice bran produced by rice processing in my country is more than 10 million tons every year. It is a renewable resource with a large number of fields. Rice bran is rich in oil, a variety of high-quality proteins, dietary fiber, and mineral elements. And B vitamins and other nutrients, so it is also a food resource with high nutritional value. [0003] The oil content in rice bran is about 15%. In order to alleviate the shortage of edible oil in our country, rice bran is also used as a source of oil to extract oil. The prepared rice bran oil is also called rice oil because of its good high temperature stability. The rich content of unsaturated fatty acids has attracted widespread attenti...

AI Technical Summary

Problems solved by technology

[0005] The invention provides an industrialized pretreatment method of high-temperature rice bran meal, which solves the problem of difficult filtration caused by high-temperature degreased rice bran meal during the process of extracting and separating components such as phytate and dietary fiber, and selectively degrades rice bran paste by amylase Refining, while improving the filtration characteristics of high-temperature rice bran meal, it does not cause a large amount of hydrolysis of starch and reduce the industrial use of rice bran meal, which lays the foundation for the subsequent separation of high-temperature rice bran meal

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