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A kind of processing method of indica rice with preserved germ and rice with retained germ

A processing method and technology for retaining germ rice, applied in the field of food processing, can solve the problems of different taste, high energy consumption, low embryo retention rate, etc., and achieve the effect of reducing energy consumption

Active Publication Date: 2021-07-23
WUHAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the taste of Japonica rice is different from that of Indica rice. For consumers who like to eat Indica rice, the existing embryo rice cannot meet their needs. In addition, Japonica rice has a long growth cycle and its grain structure is compact, which leads to energy consumption during milling. Higher, but indica rice has two or more seasons a year and the grain structure is loose. It will be more economical if we can develop a germ-preserving processing method for indica rice
However, due to the long and narrow grains of indica rice and the flat cross section, the germ retention rate after refining is low, and there is no technology for processing indica rice into germ retention rice.

Method used

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  • A kind of processing method of indica rice with preserved germ and rice with retained germ

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Select the indica rice with a water content of 15wt% and a germ retention rate of not less than 99%; use an exhaust fan to carry out winnowing to remove light impurities such as weeds, plant roots, and dust in the indica rice; then place the indica rice in a vibrating sieve to remove Remove heavy impurities such as stones and soil clods mixed in the indica rice; then use a magnetic separator to remove metal impurities in the indica rice. Use a rice huller to remove the chaff from the screened and removed indica rice, and then send it to the paddy separation equipment for paddy separation to obtain indica brown rice. The separated indica rice is sent to the huller to remove the chaff again.

[0056] Use three iron roller rice mills connected in series to do three light mills on indica brown rice, and control the whitening pressure ratios for the first light mill, the second light mill, and the third light mill in accordance with the processing sequence It is 5:3:1; the c...

Embodiment 2

[0059] Select the indica rice with a water content of 14.87Wt% and a germ retention rate of not less than 99%; air selection is carried out with an exhaust fan to remove light impurities such as weeds, plant roots, and dust in the indica rice; then the indica rice is placed in a vibrating sieve, Remove heavy impurities such as stones and soil clods mixed in the indica rice; then use a magnetic separator to remove metal impurities in the indica rice. Use a rice huller to remove the chaff from the screened and removed indica rice, and then send it to the paddy separation equipment for paddy separation to obtain indica brown rice. The separated indica rice is sent to the huller to remove the chaff again.

[0060] Use three iron roller rice mills connected in series to do three light mills on indica brown rice, and control the whitening pressure ratios for the first light mill, the second light mill, and the third light mill in accordance with the processing sequence It is 5.1:2.7...

Embodiment 3

[0063] Select the indica rice with a water content of 15wt% and a germ retention rate of not less than 99%; use an exhaust fan to carry out winnowing to remove light impurities such as weeds, plant roots, and dust in the indica rice; then place the indica rice in a vibrating sieve to remove Remove heavy impurities such as stones and soil clods mixed in the indica rice; then use a magnetic separator to remove metal impurities in the indica rice. Use a rice huller to remove the chaff from the screened and removed indica rice, and then send it to the paddy separation equipment for paddy separation to obtain indica brown rice. The separated indica rice is sent to the huller to remove the chaff again.

[0064] Use three iron roller rice mills connected in series to do three light mills on indica brown rice, and control the whitening pressure ratios for the first light mill, the second light mill, and the third light mill in accordance with the processing sequence It is 4.8:3:1; the...

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Abstract

The invention discloses a processing method for indica rice with germ preservation and rice with germ retention, and relates to the technical field of grain processing. The indica rice embryo preservation processing method comprises the following steps: sequentially screen the indica rice, separate the hulling and paddy husks to form indica brown rice; use an iron roller rice mill to whiten the indica brown rice; After the indica brown rice is purified, the germ rice is obtained; wherein, during the whitening process, the rolling distance is three machines connected in series and the whitening pressure ratio of the three machines according to the processing sequence is (4.8~5.1): (3~ 2): 1. The indica rice treated by the method of the invention can still retain more germs, not only the germ-retained rice made from indica rice can be obtained, but also the germ retention rate can reach more than 85%. In addition, compared with the existing japonica rice processing method, the method of the invention greatly reduces the energy consumption of the rice mill.

Description

technical field [0001] The invention relates to the technical field of grain processing, in particular to a method for processing indica rice with germ preservation and rice with germ retention. Background technique [0002] Germ rice, also known as germ rice, refers to polished rice whose germ retention rate can reach more than 80% after milling and processing, and meets the rice grade standard. As the primary and meristematic tissue of rice, the germ is the most physiologically active part of the grain. The germ is rich in essential trace elements such as protein, fat, soluble sugar, multivitamins, calcium and iron, etc. The nutritional components contained in rice germ account for more than 70% of the total nutritional components of rice. With people's pursuit of health and nutrition, in recent years, germ rice has become the first choice of consumers. [0003] Germ retention rate refers to the percentage of germ remaining grains in the rice sample. Japonica rice grain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02B5/02
CPCB02B5/02
Inventor 万志华胡志刚
Owner WUHAN POLYTECHNIC UNIVERSITY