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Method for improving rice quality by using water cooling process

A process, water cooling technology, applied in application, grain processing, grain milling, etc., can solve the problems of loss of micronutrients, unstable food quality, large loss of flavor substances, etc., to reduce the rate of broken rice, reduce aroma and nutrition loss and moisture loss, the effect of extending the shelf life of the finished product

Inactive Publication Date: 2021-07-09
JIANGNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of the existing rice milling process, such as the rise in temperature of rice grains and the high rate of broken rice after milling, the loss of flavor substances, the loss of micronutrients, the short shelf life of finished products, and the unstable eating quality, etc., the current reports are relatively advanced. The solution is to reduce or control the temperature rise of rice grains during the rice milling process by spraying air or cooling air.

Method used

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  • Method for improving rice quality by using water cooling process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for improving the quality of rice by water-cooling process, comprising the steps of:

[0037] (1) Impurity removal: remove metal impurities, sand and stones and shriveled grains in (Nanjing 46 fragrant rice) rice, and obtain rice after impurity removal;

[0038] (2) Hulling: the paddy is hulled by a rubber roller huller, and the air volume is controlled to 3200m 3 / h, the processing capacity is 6t / h, and enter the chaff separation device to separate and obtain brown rice; wherein the brown rice outlet temperature is 30°C, and the husking rate is 90%;

[0039] (3) Cooling: The brown rice is transported to the rice mill by a screw with a water-cooled jacket at the same time, so that the temperature of the brown rice drops below 25°C before entering the first rice mill; the rice mill and the water-cooled jacket The sets of spiral conveying pipes are connected in parallel;

[0040](4) Rice milling: Four stages of rice milling combined with water cooling process a...

Embodiment 2

[0043] The "Nanjing 46 fragrant rice" in Example 1 was adjusted to "Daohuaxiang No. 2 fragrant rice", and the others were the same as those in Example 1 to obtain rice.

Embodiment 3

[0044] Example 3 Optimization of cold water treatment

[0045] The rice milling process in Example 1 is adjusted as follows: four stages of rice milling are combined with water cooling process, the temperature rise of a single stage of rice milling is controlled by 4°C, and the rice that has been milled in each stage is transported to the next rice mill using a belt. The screw conveying of the water-cooled jacket makes the rice cool down by 4°C during each conveying process, and effectively removes the heat generated by each rice mill after grinding, squeezing and friction, and controls the temperature rise of the rice grains to be lower than 5°C during the whole process. , and others are consistent with Example 1 to obtain rice.

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Abstract

The invention discloses a method for improving rice quality by using a water cooling process, and belongs to the field of food processing. The method for improving the rice quality by using the water cooling process comprises the steps of impurity removal, rice hulling, conveying, cooling, rice milling, color sorting, polishing and packaging, and rice is obtained In the rice milling step, brown rice cooled to 25 DEG C or below is conveyed to a first rice milling machine to be milled, and the temperature rise does not exceed 5 DEG C in the whole rice milling process; cooling is carried out continuously through a water cooling process after the first rice milling, so that the temperature of the brown rice after the first rice milling is reduced by 3-5 DEG C when the brown rice enters a second rice milling machine; in the same way, rice milling is carried. According to the method for improving the rice quality by using the water cooling process, the flavor change and the broken rice production rate in the rice processing process are reduced to the maximum extent, and the rice grain temperature rise in the processing process is effectively controlled. Compared with an existing air spraying and cold air introducing cooling method, the cooling effect is greatly improved, the specific original quality of rice is more effectively improved, fragrance loss and moisture loss are reduced, the broken rice rate is reduced, and the shelf life of finished products is prolonged.

Description

technical field [0001] The invention relates to a method for improving rice quality by using a water cooling process, which belongs to the field of food processing. Background technique [0002] Rice is the staple food of people in most parts of our country. With the improvement of people's living standards, consumers have higher and higher requirements for rice quality. Considering the fragrance, nutrition and the amount of broken rice of rice, high-quality rice with natural fragrance is more and more popular among consumers and the market. At the same time, in order to win more consumers, rice processing enterprises are paying more and more attention to the quality of rice products. Although the existing mechanized rice processing efficiency is high, and the rice processing technology and equipment are relatively mature, the existing rice milling process still suffers from high broken rice rate, large loss of flavor substances, serious loss of trace nutrients, short shelf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02B5/02B02B1/08
CPCB02B1/08B02B5/02
Inventor 吴凤凤赵琦琰徐勤荣李平徐学明杨哪金亚美徐丹陈益胜朱红双
Owner JIANGNAN UNIV
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