Bran separated rice production method, and rice germ and aleurone layer powder produced through bran separated rice production method

Abstract

The invention relates to a bran separated rice production method, and rice germ and aleurone layer powder produced through the bran separated rice production method, and belongs to the technical fieldof fine and deep processing of rice. The bran separated rice production method comprises: 1) completely grinding seed coat containing lipolytic enzyme by using a washing-rice-free method to obtain rice bran; 2) extracting a small part of rice germ from the rice bran by combing low-temperature freeing and microwave drying; 3) continuously grinding by using a washing-rice-free method to obtain clean rice bran; 4) carrying out wind separation, and screening the rice bran to sort the rice germ and the aleurone layer powder; and 5) carrying out low-temperature drying sterilization, and carrying out clean packaging to obtain the finished product. According to the present invention, with the method, the yield of the whole rice germ grain is high, the purity of the aleurone layer is high, the primary nutrition preservation is good, the food is hygienic and safe, the acid value is less than 3 mgKOH / g oil within the one-year shelf life, the total bacteria is less than 100 CFU / g, the aflatoxin B1 is less than or equal to 1 [mu]g / kg, the ochratoxin is less than or equal to 0.5 [mu]g / kg, the purity can reach more than 80%, various health and safety indicators meet the national food standards,and the product is conducive to marketing promotion.

Description

technical field [0001] The invention relates to a method for producing rice by separating bran germs and the prepared rice germ and aleurone, which belong to the technical field of rice deep processing. Background technique [0002] Rice is the staple food of human beings and the main nutrient source for the basic energy and nutritional needs of the human body. my country's rice production and consumption ranks first in the world. In 2013, the total output reached more than 200 million tons, accounting for about 33% of the global total. 800 million people take rice as their staple food, and consume about 190 million tons of rice every year because of direct consumption of rice and its products. Rice bran is mixed with each other, a small amount is used to make rice bran oil, and most of it is used as feed raw material. Therefore, there will be more than 3.8 million tons of rice germ and more than 7.6 million tons of rice aleurone layer resources available for development and u...

AI Technical Summary

Problems solved by technology

[0004] The aleurone layer of rice is the outermost layer of the endosperm tissue. It is composed of neatly arranged nearly square thick-walled cells. There are 1-5 layers of cells, which are closely combined with the endosperm and are differentiated from the endosperm. The cells are rich in Trace elements such as protein, fat, vitamins and minerals, the amount of aleurone layer is related to the position of the grain, the variety of rice and environmental factors. The cells of the aleurone layer are relatively large, and the cell cavity is filled with tiny granular substances called Aleurone grains, the layer of cells next to the aleurone cells is called the sub-aleurone layer, its nature is between the aleurone cells and the internal starch cells, its shape is slightly similar to the aleurone cells, and it contains more protein, fat, etc. , also store a small amount of starch grains, so far, there are few researches and developments on the direct consumption of rice aleurone layer