Method for quickly stabilizing nutrient components of rice bran under assistance of low-temperature plasmas

Abstract

The invention discloses a method for quickly stabilizing nutrient components of rice bran under the assistance of low-temperature plasmas. The method comprises the following steps: (1) weighing a certain amount of fresh rice bran subjected to impurity removal treatment, uniformly spreading the fresh rice bran on a bracket between two electrodes of a low-temperature plasma reactor with the thickness of less than 10mm, pumping the reactor by a rotary vacuum pump until the vacuum degree of the reactor is 0.04 mbar or below, wherein gas generated by the plasmas is air, coupling the electrodes to aradio frequency power supply with the frequency of 13-14 MHz, adjusting a support, and performing treatment under the condition of 20-60 W for 4-8 min; and (2) taking out the treated rice bran, cooling the rice bran to room temperature, packaging the rice bran, and storing the packaged rice bran in a dark place to obtain the rice bran with stable nutritional components. The method is energy-saving and environment-friendly, and can passivate lipase and peroxidase in the rice bran and reduce the content of free fatty acids on the premise of not destroying nutrient components of the rice bran, so that the effects of delaying oxidation of the rice bran and stabilizing the nutrient components of the rice bran are achieved.

Description

technical field [0001] The invention belongs to the technical field of agricultural product processing, and in particular relates to a method for rapidly stabilizing nutritional components of rice bran assisted by low-temperature plasma. Background technique [0002] my country is a big rice producing country in the world, and rice bran is the main by-product of rice processing. The quality of rice bran accounts for about 6% of the rice quality, therefore, my country also has abundant rice bran resources. Rice bran not only contains nutrients such as protein, fat, carbohydrates, vitamins, dietary fiber and minerals, but also contains healthy functional substances such as sterols, γ-oryzanol, tocopherols, tocotrienols and phenolic compounds. Therefore, rice bran is a low-cost resource with high added value and high development potential. However, in the actual production process, because the lipase in the outer layer of rice bran is easy to contact with the rice bran oil in...

AI Technical Summary

Problems solved by technology

As a novel and innovative technology, the use of low-temperature plasma to stabilize the nutritional components of rice bran has great application prospects, but the current application of low-temperature plasma in grain storage also has shortcomings, such as the invention patent " An Instant Whole Grain Product and Its Processing Method” (Patent Publication No. CN108719801A) discloses an instant whole grain product and its processing method, which uses low-temperature plasma to treat whole grain raw materials, so that the raw materials have better cooking properties and gelatinization properties, but because the vacuum degree of the control system is not controlled, some gas and water vapor are still adsorbed on the surface of the whole grain raw material, making the fat in the whole grain easy to oxidize and rancid during storage and produce bad smell

At the same time, the use of nitrogen, helium, hydrogen and other gases as reaction gases instead of directly using air makes the cost of the method higher

Images