After the grain is harvested, it is necessary to carry out rice milling to become rice. The rice milling process directly determines the quality of the rice and the market price. Then there are two key technologies to watch when using rice mills to mill rice.
1, rice milling technology
The key to rice milling is to choose a reasonable grinding process and an advanced rice machine. Practice has proved that the selection of three-mill white rice milling process for rice processing is more reasonable, regardless of whether it is suitable for grinding glutinous rice or glutinous rice, and the three-machine whitening process uses the second sand and one iron process to ensure the product quality, which is particularly beneficial to the improvement. Road rice polishing effect and quality. According to the mechanism of rice milling, rapid light milling can not only reduce the increase in crushing, but also ensure that the surface of the rice grain does not produce scars due to intense milling. The large-diameter vertical roller rice mill is a fast and light-grinding machine, which is better than the horizontal roller roller rice mill in reducing the increase in crushing and keeping the grain surface smooth. For slender, indica rice, it is more suitable to use vertical sand roller rice mill.
Regardless of vertical rice mills or horizontal rice mills, they must follow the principle of multiple mills, maintain uniform peeling, grain leveling, and low crushing rates. Vertical sand roller rice mills generally use two or three series white, horizontal rice mill white rice using two sand and iron three machine white grinding process is more appropriate. Do not blindly pursue the number of whitening tracks. Too many white roads will not only increase the whitening power consumption, but also cause over-grinding, leading to a drop in the rice rate.
2, white rice polishing technology
The purpose of white rice polishing can be summarized into three aspects: 1. Clear rice grains show impetuousness, so that the rice grain performance smooth and delicate, improve the appearance of the rice sensory quality, increase the value of rice products; 2. To extend the shelf life of rice, to keep rice Freshness; 3. Improve and improve the food quality of rice, so that rice taste refreshing, smooth.
At present, all kinds of polishing machines produced in China are difficult to meet the requirements of the above three aspects. Generally, they only function to clear the floating surface of rice grains by the brush rice machine, failing to achieve pregelatinization and gelatinization of starch on the surface of rice grains. How to make the rice polished, resulting in rice starch surface pregelatinization and gelatinization, is entirely dependent on the rice during the polishing process of water and heat or the role of adding food aids. The hydrothermal effect is nothing more than the frictional heat generated by the machine itself during the polishing process of rice and the hydrothermal effect generated by the externally added water, or it is entirely dependent on the hydrothermal effect generated by the water and heat outside the polishing machine. Practice has proved that any of the above two types of polishing machines that produce hydrothermal effects can achieve good polishing results.
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