Millet germ rice and a method for preparing the same

Abstract

The application discloses millet germ rice and a preparation method thereof, and comprises the following steps: selecting millet varieties, exposing, removing stones, cleaning, twice sand roller rice milling, gravity separation of chaff and grain, twice color selection, electronic filling, and vacuum packaging. The application removes 3-4 times of millet polishing process through twice light milling of the sand roller rice mill and twice color selection of the color selection machine, maximally reduces damage of the embryo germ caused by the milling and repeated lifting process, and fully guarantees the nutritional value of the millet. Meanwhile, the application provides a correct germination method and a healthy health-care eating method of the germ rice. Compared with the conventional milling process, the preparation method has a rice yield of more than 75% and a chaff content of less than 0.3%. Meanwhile, the preparation method maximally retains the millet embryo germ (the germination rate can be more than 70%), and further retains the life activity of the millet, and has special health-care values.

Description

[0001] This application is a divisional application of the invention patent application with application number CN202410988498.0 and invention title: A Millet Germ Rice and Its Preparation Method Thereof, with the parent application date being July 23, 2024. Technical Field

[0002] This invention relates to the field of food processing technology, and in particular to a method for preparing millet germ rice and the millet germ rice obtained by the method. Background Technology

[0003] Millet germ rice is produced by simplifying the millet processing process and using special equipment to retain the germ portion of the millet, preserving as much of the millet's nutritional value and vitality as possible, making it more beneficial to human health. The germ accounts for only 4% of the weight of a single millet grain, yet contains over 60% of the nutrients of the whole grain. Regular millet, after multiple milling processes, completely loses its germ. Millet germ rice has 60%-80% more nutrients than millet currently sold on the market. Currently, the millet processing industry focuses primarily on appearance and quality, often employing large-scale integrated production lines. The millet refining process involves 7-10 steps, including cleaning, hulling, 2-4 millings, 2-4 polishings, and 2-3 color sortings. This completely removes the millet germ, resulting in significant nutrient loss and a yield of only about 60%. Traditional millet processing methods prioritize appearance and taste, losing most of the millet's nutritional value and increasing production costs, making it a losing proposition.

[0004] Millet germ is a natural source of nutrition for humans and a natural nutrient base for microorganisms, containing vitamins B and E, trace elements, dietary fiber, and high-quality fats and proteins. Due to variations in nutrient content, its effects differ significantly. Millet germ rice can excrete toxins from the body, shorten the time feces spend in the intestines, reduce internal pressure in the large intestine, and relieve constipation; it also aids in the absorption of other nutrients, cultivates beneficial bacteria, and synthesizes vitamins; and it provides a balanced intake of trace elements, preventing and improving obesity. Millet germ rice is rich in fats, vitamins, magnesium, phosphorus, potassium, calcium, zinc, and other minerals, making it a suitable supplementary food for infants. It benefits infant development and health, stimulates gastric juice secretion, aids digestion, promotes fat absorption, and helps casein in milk powder form loose, soft curds, making it easier to digest and absorb. Therefore, babies who eat germ rice receive more nutrients than those who eat white rice, promoting their physical development and enhancing their overall health. Millet germ rice is also suitable for adolescents during their growth spurt. Germinated millet is rich in phospholipids and trace elements, which are essential nutrients for the human brain. These substances not only promote brain cell regeneration and activity but also enhance intellectual development. Furthermore, they can prevent developmental delays and reduce the incidence of obesity. Germinated millet also effectively prevents insect infestation and extends its shelf life.

[0005] Currently, there are no germinated millet grains available for sale in domestic or international markets. Therefore, a method for preparing germinated millet grains is urgently needed in the industry. Summary of the Invention

[0006] Based on the above analysis, this invention provides a method for preparing millet germ rice and its preparation, which improves the nutritional value of millet while extending its shelf life. This invention is achieved through the following technical means: This invention first discloses a method for preparing millet germ rice, comprising: The selected millet variety is subjected to sun-drying, destoning, cleaning sieve, two sand roller milling processes, gravity millet-rice separation sieve, two color sorting processes, electronic filling, and vacuum packaging to obtain the final product; wherein, the millet variety is Zhangzagu No. 13; the millet is sun-dried until the moisture content is 12%-14%; the cleaning sieve includes: a grading sieve with an upper sieve of 14 mesh and a lower sieve of 17 mesh.

[0007] Preferably, the two-stage rice milling process includes: The first milling process achieved a hulling rate of 70%, the second milling process achieved a hulling rate of 99.6%, the rice yield was >75%, and the husk content was <0.3%.

[0008] Preferably, the two color sorting steps include: Select white rice in one go to remove white rice, white grass seeds, and unhulled discolored grains; Select black seeds in one go to remove black weed seeds and seeds infected by diseases and pests.

[0009] Preferably, the process also includes transporting the pre-cleaned millet to a destoner via a lifting conveyor to remove stones, clods, and other impurities.

[0010] Preferably, the process also includes automatically grading the millet by lifting it onto the sieve surface of a grading screen via a lifting conveyor.

[0011] Preferably, the process also includes passing the screened millet through a lifting conveyor and then through two sand roller mills for milling.

[0012] Preferably, the milled millet is passed through a gravity chaff separator via a lifting conveyor to blow out the chaff and broken rice.

[0013] Preferably, the process also includes using a color sorter to remove impurities from the millet after the husks have been separated by a lifting conveyor.

[0014] Preferably, the process also includes conveying the millet after removing impurities to an electronic packaging scale via a lifting conveyor for quantitative measurement; vacuum packaging the quantitative millet using a vacuum packaging machine; and palletizing by a palletizing robot.

[0015] The present invention also discloses a millet germ rice prepared according to the above preparation method.

[0016] The beneficial effects of this invention are as follows: Compared to conventional rice milling, millet germ rice requires the selection of superior millet varieties, sun-drying for two days in advance, and then undergoing grading and sieving. This reduces complex excessive processing steps such as hulling and multiple polishing, requiring only two milling and two color sorting processes. This ensures minimal mechanical damage during milling, resulting in a milling yield of over 75% and a husk content of less than 0.3%. Simultaneously, it maximizes the preservation of the millet germ (germination rate can reach over 70%), thus maintaining the millet's vitality and giving it unique health benefits. Detailed Implementation

[0017] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1 A method for preparing millet germ rice, comprising: S1. Select high-quality millet varieties that are mature and easy to husk, such as "Zhangzagu No. 13".

[0020] S2. The rice is sun-dried for two days before milling, with the moisture content controlled at 12%-14%, which makes it easier to remove the husk and maintains the best taste.

[0021] S3. The millet that has been initially cleaned is transported to the destoner via the lifting conveyor to remove impurities such as stones and clods of earth. S4. The millet is lifted by the lifting conveyor onto the grading screen to form an automatic grading process. The upper screen is 14 mesh and the lower screen is 17 mesh to remove oversized and undersized grains and screen out millet of relatively uniform size. S5. After being lifted by a conveyor, the sieved millet is milled by two sand roller mills. The first mill has a hulling rate of up to 70%, and the second mill has a hulling rate of up to 99.6%. This effectively reduces the complex over-processing steps of millet such as hulling and multiple polishing, ensuring that the millet is subjected to the least amount of mechanical damage during the millet processing.

[0022] S6. After milling, the milled millet is passed through a gravity husk separator via a lifting conveyor to blow out the chaff and broken rice. The milling yield is over 75%, and the husk content is less than 0.3%.

[0023] S7. After the millet is separated from the husk by the lifting conveyor, a color sorter is used to remove impurities. The first white sorting removes white rice, white grass seeds, unhulled millet, and other discolored grains; the second black sorting removes black grass seeds, diseased or pest-infested grains, and other discolored grains.

[0024] S8. The millet, after being cleaned of impurities, is conveyed by a lifting conveyor to an electronic packaging scale for quantitative measurement. S9. A fixed quantity of millet is vacuum-packed using a vacuum packaging machine and then palletized by a palletizing robot.

[0025] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for preparing millet germ rice, characterized in that, include: The selected millet variety is subjected to sun-drying, destoning, cleaning sieve, two sand roller milling processes, gravity millet-rice separation sieve, two color sorting processes, electronic filling, and vacuum packaging to obtain the final product; wherein, the millet variety is Zhangzagu No. 13; the millet is sun-dried until the moisture content is 12%-14%; the cleaning sieve includes: a grading sieve with an upper sieve of 14 mesh and a lower sieve of 17 mesh.

2. The preparation method according to claim 1, characterized in that, The two rice milling processes include: The first milling process achieved a hulling rate of 70%, the second milling process achieved a hulling rate of 99.6%, the rice yield was >75%, and the husk content was <0.3%.

3. The preparation method according to claim 1, characterized in that, The two color selection processes include: Select white rice in one go to remove white rice, white grass seeds, and unhulled discolored grains; Select black seeds in one go to remove black weed seeds and seeds infected by diseases and pests.

4. The preparation method according to claim 1, characterized in that, It also includes transporting the pre-cleaned millet to the destoner via a lifting conveyor to remove stones, clods of earth, and other impurities.

5. The preparation method according to claim 1, characterized in that, It also includes the automatic grading of millet by lifting it onto the sieve surface of the grading screen via a lifting conveyor.

6. The preparation method according to claim 1, characterized in that, It also includes milling the sieved millet through two sand roller mills via a lifting conveyor.

7. The preparation method according to claim 1, characterized in that, It also includes passing milled millet through a gravity chaff separator via a lifting conveyor to blow out the chaff and broken rice.

8. The preparation method according to claim 1, characterized in that, It also includes using a color sorter to remove impurities from millet after it has been separated from hulled grains by a lifting conveyor.

9. The preparation method according to claim 1, characterized in that, It also includes conveying the millet after removing impurities via a lifting conveyor to an electronic packaging scale for quantitative measurement; vacuum packaging the quantitative millet via a vacuum packaging machine; and palletizing by a palletizing robot.

10. A millet germ rice prepared by any of the preparation methods according to claims 1 to 9.