A kind of selenium strengthens the production method of straight rice-flour noodles
Technical field
The present invention relates to the production methods that a kind of selenium strengthens straight rice-flour noodles, belong to field of agricultural products processing.
Background technique
Rice flour be it is deep liked by people, time-honored traditional food.Currently, rice flour on the market is only original with rice
Material, nutritional ingredient is more single, is unable to satisfy the growing nutritional need of people.It is asked for rice flour nutritive value is not high
Topic adds the method for nutrient during having scholar using production rice flour to improve nutritive value, but major part is produced
The rice flour come is not close in conjunction with nutrient, is easy to be lost during the cooking process, the practical retention rate of nutrient is low.Therefore, nutrition
The boiling retention rate of rice flour restricts always the development of ourishing rice flour.
Selenium has inoxidizability, and body can be protected from free radical and carcinogenic infringement, also can reduce inflammatory reaction, increases
Strong immunity is metabolic necessary material to resist infection, the health for promoting heart, the effect for enhancing vitamin e.Intake
It is insufficient the reaction such as prematurely senile, cataract, hypertension easily occur.According to national relevant regulations, can be added in cereal and its product
Sodium selenite supplements selenium element, and the maximum allowable usage amount in terms of elemental selenium is that (selenium contains in sodium selenite by 140-180 μ g/kg
45.7%) amount is.
Summary of the invention
Have the defects that easy loss, boiling retention rate are low for the ourishing rice flour of prior art production, one kind is now provided
The method that the conjugation and nutrient boiling retention rate of nutrient and rice flour can be promoted.
A kind of selenium strengthens the production method of straight rice-flour noodles, it is characterised in that the following steps are included:
(1) raw material soaking: choosing early rice, eluriate 3 times or more, 3-4h is impregnated in 30-36 DEG C of water;
(2) it crushes: being filtered dry moisture, crushed with 60 mesh mesh screen beater disintegrating machines, rice flour crosses 80 mesh mesh screens;
(3) breading: being slowly added to drinking water and sodium selenite into the rice flour crushed, is uniformly mixed using mixer,
Adjusting rice flour moisture content is 32-36%, and mixer revolving speed 1500-1600r/min, the breading time is 8-10min, sodium selenite
Additive amount be 120-130 μ g/kg rice flour;
(4) it squeezes: the material mixed is subjected to squeezing powder by twin (double) screw extruder;
(5) aging: the rice stick squeezed out is placed in aging 5-6h in the environment of 32-36 DEG C of temperature, humidity 75-80%, aging
Rice flour is acted on using the ultrasonic wave of frequency 400-450KHz, power 200-220W in the process;
(6) multiple to steam: rice stick being sent into steamer, steams 2-3min again;
(7) microwave and ultrasound is handled: the rice stick of multiple steaming is sent into the environment of humidity 95-98%, using microwave and
Ultrasonic wave superposition acts on rice flour, time 2-3h, and temperature is controlled at 50-55 DEG C;Ultrasonic frequency is 340-360KHz, power
For 160-180W;Microwave frequency is 2450MHz, power 70-75W;
(8) wash and dress: treated rice stick is put into pond immersion 18-20min, remove it is remaining on rice flour spit slurry, it is outstanding
Hang combing;
(9) dry: control rice flour water content is in 13-14%;
(10) it cuts, pack.
The difference of present invention process and the prior art is:
1, a certain amount of sodium selenite is added during producing rice flour, increased by squeezing, in ageing process super
Sonicated, ultrasonic wave have intensified the rearrangement of starch molecule in rice flour during constantly vibrating and beaing.
2, for the binding characteristic of selenium and starch, microwave and ultrasound superposition is used after multiple steaming, promotes plasma selenium
It with the combination of starch molecule, enhances rice flour and squeezes the network structure to be formed, enhance the toughness of rice flour, it is existing to avoid easy broken strip
As.
3, the present invention realizes combining closely for rice flour and sodium selenite, and rice flour obtained has chewy texture, the synthesis product of rice flour
Matter gets a promotion, and nutrient boiling retention rate is high.
Specific embodiment
Below with reference to embodiment, the present invention will be further described.
Embodiment 1:
(1) raw material soaking: choosing early rice, eluriates 4 times, impregnates 3.5h in 34 DEG C of water;
(2) it crushes: being filtered dry moisture, crushed with 60 mesh mesh screen beater disintegrating machines, rice flour crosses 80 mesh mesh screens;
(3) breading: being slowly added to drinking water and sodium selenite into the rice flour crushed, is uniformly mixed using mixer,
Adjusting rice flour moisture content is 34%, and mixer revolving speed 1600r/min, the breading time is 8min, and the additive amount of sodium selenite is
130 μ g/kg rice flour;
(4) it squeezes: the material mixed is subjected to squeezing powder by twin (double) screw extruder;
(5) aging: the rice stick squeezed out is placed in aging 6h in the environment of 34 DEG C of temperature, humidity 80%;
(6) multiple to steam: rice stick being sent into steamer, steams 2min again;
(7) humid heat treatment: the rice stick of multiple steaming is placed in the environment of 55 DEG C of temperature, humidity 98%, time 2h;
(8) wash and dress: treated rice stick is put into pond immersion 20min, remove it is remaining on rice flour spit slurry, suspension is combed
Reason;
(9) dry: control rice flour water content is 14%;
(10) it cuts, pack.
Embodiment 2:
(1) raw material soaking: choosing early rice, eluriates 4 times, impregnates 3.5h in 34 DEG C of water;
(2) it crushes: being filtered dry moisture, crushed with 60 mesh mesh screen beater disintegrating machines, rice flour crosses 80 mesh mesh screens;
(3) breading: being slowly added to drinking water and sodium selenite into the rice flour crushed, is uniformly mixed using mixer,
Adjusting rice flour moisture content is 34%, and mixer revolving speed 1600r/min, the breading time is 8min, and the additive amount of sodium selenite is
130 μ g/kg rice flour;
(4) it squeezes: the material mixed is subjected to squeezing powder by twin (double) screw extruder;
(5) aging: the rice stick squeezed out is placed in aging 6h in the environment of 34 DEG C of temperature, humidity 80%, adopts in ageing process
Rice flour is acted on the ultrasonic wave of frequency 400KHz, power 200W;
(6) multiple to steam: rice stick being sent into steamer, steams 2min again;
(7) humid heat treatment: the rice stick of multiple steaming is placed in the environment of 55 DEG C of temperature, humidity 98%, time 2h;
(8) wash and dress: treated rice stick is put into pond immersion 20min, remove it is remaining on rice flour spit slurry, suspension is combed
Reason;
(9) dry: control rice flour water content is 14%;
(10) it cuts, pack.
Embodiment 3:
(1) raw material soaking: choosing early rice, eluriates 4 times, impregnates 3.5h in 34 DEG C of water;
(2) it crushes: being filtered dry moisture, crushed with 60 mesh mesh screen beater disintegrating machines, rice flour crosses 80 mesh mesh screens;
(3) breading: being slowly added to drinking water and sodium selenite into the rice flour crushed, is uniformly mixed using mixer,
Adjusting rice flour moisture content is 34%, and mixer revolving speed 1600r/min, the breading time is 8min, and the additive amount of sodium selenite is
130 μ g/kg rice flour;
(4) it squeezes: the material mixed is subjected to squeezing powder by twin (double) screw extruder;
(5) aging: the rice stick squeezed out is placed in aging 6h in the environment of 34 DEG C of temperature, humidity 80%, adopts in ageing process
Rice flour is acted on the ultrasonic wave of frequency 400KHz, power 200W;
(6) multiple to steam: rice stick being sent into steamer, steams 2min again;
(7) microwave and ultrasound is handled: the rice stick of multiple steaming being sent into the environment of humidity 98%, using microwave and ultrasound
Wave superposition is controlled in rice flour, time 2h, temperature at 55 DEG C;Ultrasonic frequency is 360KHz, power 180W;Microwave Frequency
Rate is 2450MHz, power 75W;
(8) wash and dress: treated rice stick is put into pond immersion 20min, remove it is remaining on rice flour spit slurry, suspension is combed
Reason;
(9) dry: control rice flour water content is 14%;
(10) it cuts, pack.
Embodiment effect analysis:
Straight rice-flour noodles physical and chemical index
Through analysis it is found that compared with embodiment 1 and embodiment 2, the production gained straight rice-flour noodles better quality of embodiment 3,
Its strip-breaking rate is lower, and selenium boiling retention rate and sensory evaluation scores are then considerably higher.The present invention complies with straight rice-flour noodles architectural characteristic, with
And the combination rule of selenium and starch, utilize the organoleptic quality and nutritional ingredient of the synergistic effect enhancing product of microwave and ultrasound
Boiling retention rate, while reducing the strip-breaking rate of straight rice-flour noodles, value of the product and quality are obviously improved.