CN112403559A - Organic rice processing technology - Google Patents

Abstract

The invention relates to an organic rice processing technology, which belongs to the field of rice processing, and more needs to consider how to reserve more microelements such as iron, magnesium and calcium and more vitamin C in rice in the processing process of organic rice. If the existing rice processing technology is utilized, the steps of primary screening, drying, secondary screening, cleaning, hulling, husked rice separation, rice milling, primary grading, polishing, screening, color sorting, packaging and warehousing and the like are not included, so that a large amount of trace elements in the organic rice can be lost. A technology for processing organic rice includes such steps as removing impurities from paddy, drying paddy in air, magnetic separation, high-temp steaming, immersing in cold water, baking by hot air, hulling, separating coarse rice, multi-stage fine grinding, screening rice and packing.

Description

Organic rice processing technology

Technical Field

The invention relates to an organic rice processing technology, belongs to the field of rice processing, and relates to an organic rice processing method.

Background

Organic rice, a kind of rice which is completely cultivated by a natural farming method. Compared with common rice on the market, the organic rice has more iron, magnesium, calcium and other trace elements and vitamin C, and has lower contents of heavy metals and carcinogenic nitrate. Therefore, in the processing process of the organic rice, more consideration needs to be given to how to more retain more iron, magnesium, calcium and other trace elements and vitamin C which are rich in the rice. If the existing rice processing technology is utilized, the steps of primary screening, drying, secondary screening, cleaning, hulling, husked rice separation, rice milling, primary grading, polishing, screening, color sorting, packaging and warehousing and the like are not included, so that a large amount of trace elements in the organic rice can be lost.

Disclosure of Invention

The invention provides a rice fine processing technology, which utilizes the multistage processes of rice impurity removal, rice airing, magnetic separation cleaning, high-temperature rice steaming, cold water soaking, hot air drying, rice hulling, rice husking separation, multistage fine grinding, rice screening, packaging and warehousing so as to maintain the nutrients of organic rice to the maximum extent.

The organic rice processing technology is characterized by comprising the following steps:

a. workers remove broken grass and dry and flat rice hulls in the paddy by using a large air blower, and then remove sand grains in the paddy by using a reciprocating type vibrating screen;

b. workers spread the unhulled paddy on a relatively flat concrete sunning ground and dry the paddy in the sun for 2 to 3 days;

c. workers use a magnetic separator to carry out magnetic separation under the magnetic induction intensity of 280mT to enable the paddy to pass through the lower part of the magnetic separator in sequence, and iron in the paddy is removed;

d. workers convey the magnetically-separated rice into a high-temperature steam chamber through a conveyor belt, high-temperature steam generated by a steam generator is led to a rice bin, and high-temperature steam treatment is carried out for 1-2 min;

e. workers quickly put the rice steamed at high temperature into cold water to be soaked for 2-3min, and then the rice is fished out and drained;

f. workers dry the drained rice for 2-3 hours by using a roller type hot air dryer until the water content is not more than 10%;

g. putting the dried rice into a rice huller for processing by workers to obtain primarily hulled rice;

h. a worker uses a rough rice separator to completely separate rough rice from the preliminarily hulled rice;

j. workers send the brown rice into a rice mill for multiple times of fine grinding, and the brown rice is completely hulled and then cooled;

k. workers convey the rice to a separation sieve through a conveying belt for separation, and blow off a small amount of bran powder in the rice by using an air blower during separation;

i, weighing and packaging the screened rice by using an automatic packaging machine by workers, and putting 20kg of the screened rice in a sterile warehouse for storage.

Has the advantages that: in the processing process of the organic rice, more consideration needs to be given to how to keep more trace elements such as iron, magnesium, calcium and the like and more vitamin C in the rice. If the existing rice processing technology is utilized, the steps of primary screening, drying, secondary screening, cleaning, hulling, husked rice separation, rice milling, primary grading, polishing, screening, color sorting, packaging and warehousing and the like are not included, so that a large amount of trace elements in the organic rice can be lost. A technology for processing organic rice includes such steps as removing impurities from paddy, drying paddy in air, magnetic separation, high-temp steaming, immersing in cold water, baking by hot air, hulling, separating coarse rice, multi-stage fine grinding, screening rice and packing.

Detailed Description

Example 1

The organic rice processing technology is characterized by comprising the following steps:

a. workers remove broken grass and dry and flat rice hulls in the paddy by using a large air blower, and then remove sand grains in the paddy by using a reciprocating type vibrating screen;

b. workers spread the unhulled paddy on a relatively flat concrete sunning ground and dry the paddy in the sun for 2 to 3 days;

c. workers use a magnetic separator to carry out magnetic separation under the magnetic induction intensity of 280mT to enable the paddy to pass through the lower part of the magnetic separator in sequence, and iron in the paddy is removed;

d. workers convey the magnetically-separated rice into a high-temperature steam chamber through a conveyor belt, high-temperature steam generated by a steam generator is led to a rice bin, and high-temperature steam treatment is carried out for 1-2 min;

e. workers quickly put the rice steamed at high temperature into cold water to be soaked for 2-3min, and then the rice is fished out and drained;

f. workers dry the drained rice for 2-3 hours by using a roller type hot air dryer until the water content is not more than 10%;

g. putting the dried rice into a rice huller for processing by workers to obtain primarily hulled rice;

h. a worker uses a rough rice separator to completely separate rough rice from the preliminarily hulled rice;

j. workers send the brown rice into a rice mill for multiple times of fine grinding, and the brown rice is completely hulled and then cooled;

k. workers convey the rice to a separation sieve through a conveying belt for separation, and blow off a small amount of bran powder in the rice by using an air blower during separation;

i, weighing and packaging the screened rice by using an automatic packaging machine by workers, and putting 20kg of the screened rice in a sterile warehouse for storage.

Example 2

The organic rice processing technology is characterized by comprising the following steps:

a. workers synchronously remove impurities and sand grains in the paddy rice by using a large air blower and a reciprocating type vibrating screen;

b. workers spread the unhulled paddy on a relatively flat concrete sunning ground, and sunning the paddy under the sunlight for 2 to 3 days by using a turning plate for tedding every 3 to 4 hours;

c. workers use a high-speed magnetic separator to pass the paddy rice from the lower part of the magnetic separator in sequence to remove iron in the paddy rice;

d. workers convey the magnetically-separated rice into a high-temperature steam chamber through a conveyor belt, and high-temperature steam at 120 ℃ generated by a steam generator is led to a rice bin for high-temperature steam treatment for 1-2 min;

e. workers quickly put the rice steamed at high temperature into cold water to be soaked for 2-3min, and then the rice is fished out and drained;

f. a worker dries the drained rice for 2-3 hours by using a roller type hot air dryer;

g. putting the dried rice into a rice huller for processing by workers to obtain primarily hulled rice;

h. a worker utilizes a rough rice separator to completely separate rough rice from the preliminarily hulled rice, and the separation degree reaches more than 98%;

j. workers send the brown rice into a rice mill for 2-3 times of fine grinding, and the brown rice is completely hulled and cooled;

k. workers convey the rice to a separation sieve through a conveying belt for separation, and blow off a small amount of bran powder in the rice by using an air blower during separation;

i, weighing and packaging the screened rice by using an automatic packaging machine by workers, and putting 20kg of the screened rice in a sterile warehouse for storage.

Claims (1)

1. The organic rice processing technology is characterized by comprising the following steps:

a. workers remove broken grass and dry and flat rice hulls in the paddy by using a large air blower, and then remove sand grains in the paddy by using a reciprocating type vibrating screen;

b. workers spread the unhulled paddy on a relatively flat concrete sunning ground and dry the paddy in the sun for 2 to 3 days;

c. workers use a magnetic separator to carry out magnetic separation under the magnetic induction intensity of 280mT to enable the paddy to pass through the lower part of the magnetic separator in sequence, and iron in the paddy is removed;

d. workers convey the magnetically-separated rice into a high-temperature steam chamber through a conveyor belt, high-temperature steam generated by a steam generator is led to a rice bin, and high-temperature steam treatment is carried out for 1-2 min;

e. workers quickly put the rice steamed at high temperature into cold water to be soaked for 2-3min, and then the rice is fished out and drained;

f. workers dry the drained rice for 2-3 hours by using a roller type hot air dryer until the water content is not more than 10%;

g. putting the dried rice into a rice huller for processing by workers to obtain primarily hulled rice;

h. a worker uses a rough rice separator to completely separate rough rice from the preliminarily hulled rice;

j. workers send the brown rice into a rice mill for multiple times of fine grinding, and the brown rice is completely hulled and then cooled;

k. workers convey the rice to a separation sieve through a conveying belt for separation, and blow off a small amount of bran powder in the rice by using an air blower during separation;

i, weighing and packaging the screened rice by using an automatic packaging machine by workers, and putting 20kg of the screened rice in a sterile warehouse for storage.