CN106694088B

CN106694088B - A kind of big rice processing method

Info

Publication number: CN106694088B
Application number: CN201611081752.0A
Authority: CN
Inventors: 廉海
Original assignee: Yingshang County Zion Rice Co Ltd
Current assignee: Yingshang County Zion Rice Co Ltd
Priority date: 2016-11-30
Filing date: 2016-11-30
Publication date: 2018-12-21
Anticipated expiration: 2036-11-30
Also published as: CN106694088A

Abstract

The present invention relates to cereal processing technique fields, more particularly to a kind of big rice processing method, specific step is as follows: after paddy is cleaned, vacuum refrigeration after being impregnated in the aqueous sodium carbonate that concentration is 5%, centrifugal treating, it puts again into water, shelling, brown rice is placed in 2% calcium glycerophosphate aqueous solution after impregnating, vacuum refrigeration, it puts after instantaneous high-temperature processing into water, shelling, after rice low temperature drying, one layer of cow's milk protein peptide is sprayed to rice surface mist, being passed through polishing in polishing machine again uses moment high/low temperature drying mode to be dried to water content lower than 2%, the finally obtained grains of rice of the present invention is uniform, surface is smooth full, it is glittering and translucent.

Description

A kind of big rice processing method

Technical field

The present invention relates to cereal processing technique fields, and in particular to a kind of big rice processing method.

Background technique

Rice is one of staple food of the mankind, is analyzed according to modern nutriology, and rice contains protein, fat, vitamin B1, A, E and several mineral materials.Carbohydrate containing 75% or so in rice, protein 7%-8%, fatty 1.3%-1. 8%, and containing abundant B family vitamin etc..Therefore, edible rice has higher nutritive value.Rice currently on the market mostly after finishing again into Row sell, manufacture craft include paddy is cleaned, impurity elimination, is peeled off, paddy it is rough separation, it is secondary peel off, kibble, essence grind, rice Classification, polishing, color sorting, rice secondary grading, packing process, complex procedures, broken rice rate is high in treatment process.

Summary of the invention

To solve existing rice processing, there are complex procedures, and the high disadvantage of broken rice rate, the purpose of the present invention is to provide one The big rice processing method of kind.

The technical solution adopted by the present invention is a kind of big rice processing method, the specific steps are as follows:

(1) it after cleaning paddy, impregnates 8-10 hours, drains away the water, true in the aqueous sodium carbonate that concentration is 5% Centrifugal treating under the vacuum condition that reciprocal of duty cycle is 0.01-0.12MPa, temperature is -15 ~ -20 DEG C, centrifugal rotational speed 1500- 1700rpm, centrifugation time 6-7min；

(2) paddy that step (1) processing obtains is thrown in water, with the stirring rate stir process of 120-130r/min 10-15 minutes, rice husk is separated with brown rice；

(3) brown rice is placed in 2% calcium glycerophosphate aqueous solution and is impregnated 12-15 hours, drained away the water, be in vacuum degree It is handled 30-35 minutes under 0.01-0.12MPa, the vacuum condition that temperature is -5 ~ -8 DEG C, moment is warming up to 120-130 DEG C, and protects It holds 60-70 seconds；

(4) step (3) processing is obtained brown rice to be thrown in water again, at the stirring rate stirring of 120-130r/min Reason 2-3 minutes, interior protection cortex is separated with endosperm, obtains thorough hulled rice；

(5) by rice drying and processing 2.8-3 hours under 38-40 DEG C of hot wind, one layer of cow's milk egg is sprayed to rice surface mist White peptide, then be passed through in polishing machine and polish；

(6) water content is dried to lower than 2% using moment high/low temperature drying mode to the rice after polishing, wherein moment is high Low temperature drying mode is to keep rice 2-2.5 seconds at 120 DEG C, and instantaneous temperature reduction is to keeping 10-12 minutes at 15-17 DEG C, such as The processing of this iterative cycles；

(7) rice is subjected to sieving and grading, nitrogen-filled packaging.

For the cow's milk protein peptide in production, into cow's milk plus protease hydrolyzed to degree of hydrolysis is 12%, and 100 DEG C of holdings are gone out Enzyme 30 minutes, obtain cow's milk protein peptide.

The beneficial effects of the invention are that treatment process of the present invention is simple, paddy husking needs not move through rubber rollers hulling machine Or the shelling of diamond dust hulling machine, first the aqueous sodium carbonate 5% impregnates, and is carrying out vacuum and low temperature centrifugal treating, can effectively make Rice husk is separated with brown rice, only need to be stirred and can easily be separated rice husk with brown rice in water, equally, by interior protection cortex and endosperm Separation is handled without by Mill technique, it is only necessary to brown rice is placed in 2% calcium glycerophosphate aqueous solution after impregnating, it is low in vacuum Moment rises to high temperature after the lower processing of temperature, and interior protection cortex can effectively be made to separate with endosperm, need to stir in water can easily by Interior protection cortex is separated with endosperm, and the entire process that shells is extremely low to rice damage ratio, and broken rice rate is lower than 0.05%, rice shelling damage Hurt rate lower than 0.13%；

One layer of cow's milk protein peptide is sprayed to rice surface mist before polishing, broken rice rate in rice polishing process can be effectively reduced, is sprayed The rice polished again after cow's milk protein peptide is applied relative to the control group polished without spraying, using identical burnishing stick Part, broken rice rate reduce 5.3 times or more, spray the broken rice rate polished again after cow's milk protein peptide lower than 0.3%；

Rice after polishing is dried using moment high/low temperature drying mode, rice surface brightness can be improved, while can It is significant to extend the rice shelf-life, using the rice of moment high/low temperature drying mode drying than being protected using the rice of conventional method drying The matter phase, it is more than the moon to extend at least three；

The finally obtained grains of rice of the present invention is uniform, surface is smooth full, glittering and translucent.

Specific embodiment

Below in conjunction with specific embodiment, the present invention will be described:

Embodiment 1, a kind of big rice processing method, the specific steps are as follows:

(1) it after cleaning paddy, impregnates 8 hours, drains away the water, in vacuum degree in the aqueous sodium carbonate that concentration is 5% For centrifugal treating under 0.01MPa, the vacuum condition that temperature is -15 DEG C, centrifugal rotational speed 1500rpm, centrifugation time 6min；

(2) paddy that step (1) processing obtains is thrown in water, is divided with the stirring rate stir process 10 of 120r/min Clock separates rice husk with brown rice；

(3) brown rice is placed in 2% calcium glycerophosphate aqueous solution and is impregnated 12 hours, drained away the water, be in vacuum degree It is handled 30 minutes under 0.01MPa, the vacuum condition that temperature is -5 DEG C, moment is warming up to 120 DEG C, and is kept for 60 seconds；

(4) step (3) processing is obtained brown rice to be thrown in water again, with the stirring rate stir process 2 of 120r/min Minute, interior protection cortex is separated with endosperm, obtains thorough hulled rice；

(5) by rice under 38 DEG C of hot wind drying and processing 2.8 hours, to rice surface mist spray one layer of cow's milk protein peptide, It is passed through in polishing machine and polishes again；

(6) water content is dried to lower than 2% using moment high/low temperature drying mode to the rice after polishing, wherein moment is high Low temperature drying mode is to keep rice 2 seconds at 120 DEG C, and instantaneous temperature reduction is recycled repeatedly to being kept for 10 minutes at 15 DEG C Processing；

(7) rice is subjected to sieving and grading, nitrogen-filled packaging.

Embodiment 2, a kind of big rice processing method, the specific steps are as follows:

(1) it after cleaning paddy, impregnates 10 hours, drains away the water, in vacuum in the aqueous sodium carbonate that concentration is 5% Degree be 0.12MPa, centrifugal treating under the vacuum condition that temperature is -20 DEG C, centrifugal rotational speed 1700rpm, centrifugation time 7min；

(2) paddy that step (1) processing obtains is thrown in water, is divided with the stirring rate stir process 15 of 130r/min Clock separates rice husk with brown rice；

(3) brown rice is placed in 2% calcium glycerophosphate aqueous solution and is impregnated 15 hours, drained away the water, be in vacuum degree It is handled 35 minutes under 0.12MPa, the vacuum condition that temperature is -8 DEG C, moment is warming up to 130 DEG C, and is kept for 70 seconds；

(4) step (3) processing is obtained brown rice to be thrown in water again, with the stirring rate stir process 3 of 130r/min Minute, interior protection cortex is separated with endosperm, obtains thorough hulled rice；

(5) by rice under 40 DEG C of hot wind drying and processing 3 hours, to rice surface mist spray one layer of cow's milk protein peptide, then It is passed through in polishing machine and polishes；

(6) water content is dried to lower than 2% using moment high/low temperature drying mode to the rice after polishing, wherein moment is high Low temperature drying mode is to keep rice 2.5 seconds at 120 DEG C, and instantaneous temperature reduction is followed repeatedly to being kept for 12 minutes at 17 DEG C Ring processing；

(7) rice is subjected to sieving and grading, nitrogen-filled packaging.

Claims

1. a kind of big rice processing method, which is characterized in that specific step is as follows:

(1) it after cleaning paddy, impregnates 8-10 hours, drains away the water, in vacuum degree in the aqueous sodium carbonate that concentration is 5% For centrifugal treating under 0.01-0.12MPa, the vacuum condition that temperature is -15 ~ -20 DEG C, centrifugal rotational speed 1500-1700rpm, from Heart time 6-7min；

(2) paddy that step (1) processing obtains is thrown in water, with the stirring rate stir process 10- of 120-130r/min 15 minutes, rice husk is separated with brown rice；

(3) brown rice is placed in 2% calcium glycerophosphate aqueous solution and is impregnated 12-15 hours, drained away the water, be 0.01- in vacuum degree It is handled 30-35 minutes under 0.12MPa, the vacuum condition that temperature is -5 ~ -8 DEG C, moment is warming up to 120-130 DEG C, and keeps 60- 70 seconds；

(4) step (3) processing is obtained brown rice to be thrown in water again, with the stirring rate stir process 2- of 120-130r/min 3 minutes, interior protection cortex is separated with endosperm, obtains thorough hulled rice；

(5) by rice drying and processing 2.8-3 hours under 38-40 DEG C of hot wind, one layer of cow's milk protein peptide is sprayed to rice surface mist, It is passed through in polishing machine and polishes again；

(6) water content is dried to lower than 2% using moment high/low temperature drying mode to the rice after polishing, wherein moment high/low temperature Drying mode is to keep rice 2-2.5 seconds at 120 DEG C, and instantaneous temperature reduction is so anti-to being kept for 10-12 minutes at 15-17 DEG C Multiple circular treatment；

(7) rice is subjected to sieving and grading, nitrogen-filled packaging.

2. a kind of big rice processing method according to claim 1, which is characterized in that

For the cow's milk protein peptide in production, into cow's milk plus protease hydrolyzed to degree of hydrolysis is 12%, 100 DEG C of holding enzyme deactivations 30 Minute, obtain cow's milk protein peptide.