What is rice processing? What are the key technologies of rice processing?

Rice processing refers to the technical process in which the rice grain is mechanically, physically and chemically processed to form different specialty commodities or products according to its characteristics and product target requirements. The processing quality of rice reflects the characteristics of the paddy, and the main indicators of its evaluation are the brown rate, the whole rice rate, the content of broken rice in the rice, rice processing accuracy and other indicators. The key technologies of rice processing are rice tempering technology, rice milling technology, rice polishing technology, rice color selection technology.

(1) rice tempering technology. It refers to the temperature and moisture regulation of brown rice before milling. Before milling the brown rice surface temperature, humidification, softening the skin layer, is conducive to improving the efficiency of rice milling, milled rice surface is smooth, the rate of de-embryoization increased substantially, the rate of broken rice is reduced. (2) rice polishing technology. It refers to the brown rice bran layer and germ part of the milling, so that it becomes in line with the process of edible rice, as far as possible to ensure the integrity of the rice, reduce the broken rice, improve the rate of rice, improve the purity of rice, for the next step of polishing technology to prepare. (3) Polishing technology. The appearance of rice with bright color and white is one of the indicators of high quality rice. Rice polishing technology is an indispensable process for producing high-quality refined rice. Polishing technology is conducive to improving the appearance of rice quality and rice commodity value, improve and enhance the edible quality of rice. (4) Rice color selection technology. Rice may be mixed with different color grains, such as yellow grains, disease spots. In order to improve the commercial value of rice, it is necessary to remove those foreign-colored grains. Through the color sorter can be effectively separated, the color effect is very obvious, is to remove the yellow grains of rice and insect grains of technical assurance.