CN111955664A - Nutritious instant pearl rice and production method thereof - Google Patents

Abstract

The invention discloses a nutritious instant pearl rice, which comprises the following components: the nutritional convenient pearl rice is prepared from the following raw materials in parts by mass: 85-95 parts of corn, 2-8 parts of black rice and 3-7 parts of black beans. The nutritional instant pearl rice provided by the invention takes corn as a main raw material and black rice and black beans with rich nutrition as auxiliary materials, and has the advantages of high nutritional value, convenience for eating and good taste. The invention also provides a production method of the nutritional instant pearl rice, the nutritional pearl rice is prepared by double-screw extrusion, granulation, cutting and re-puffing, and the drying temperature is controlled in the homogenizing and dehydration process, so that the preparation efficiency and the edible taste of the nutritional pearl rice are improved.

Description

A kind of nutritious convenient pearl rice and its production method

technical field

The invention relates to a nutritious and convenient pearl rice and a production method thereof, belonging to the field of food processing.

Background technique

With the development of the national economy, the acceleration of the pace of life and the improvement of people's living standards, convenience foods have been increasingly favored by people. According to experts of China Food Industry Association, the convenience of food will become one of the five major trends in the development of my country's food industry in the future. The convenience of food in my country is mainly based on the convenience of rice and flour products. However, over the years, convenience foods have always been dominated by "noodles", and a single product structure not only cannot meet people's diverse needs, but also creates an unfavorable situation of "thousands of troops crossing a single-plank bridge" for enterprises.

At present, the traditional instant rice is mainly obtained through the whole grain of rice washing, soaking, cooking, drying and other processes, not only serious nutritional loss, but also due to the loss of soluble components, the instant rice lacks suitable viscoelasticity after rehydration, and at the same time after soaking, The cooked instant rice has poor hardness and brittleness, and the taste and nutritional value are not ideal.

SUMMARY OF THE INVENTION

The invention designs and develops a kind of nutritious and convenient pearl rice, which uses corn as the main raw material, supplemented by nutritious black rice and black beans. The product has high nutritional value, is convenient to eat and has good taste.

The present invention also designs and develops a method for producing nutritious and convenient pearl rice. The nutritious pearl rice is prepared through twin-screw extrusion, granulation, cutting and re-puffing, and the drying temperature is controlled in the process of homogenization and dehydration to improve the preparation efficiency of the nutritious pearl rice. and edible taste.

The technical scheme provided by the present invention is:

A nutritionally convenient pearl rice that includes:

The nutritious and convenient pearl rice is composed of the following raw materials:

85-95 servings of corn, 2-8 servings of black rice, 3-7 servings of black beans;

Preferably, the nutritious and convenient pearl rice is composed of the following components in parts by mass:

90 servings of corn, 6 servings of black rice, and 4 servings of black beans.

A method for producing nutritious and convenient pearl rice, comprising:

Step 1: Weigh the raw materials according to the parts by mass, including: 85-95 parts of corn, 2-8 parts of black rice and 3-7 parts of black beans, pulverize to obtain compound raw material powder, and put the obtained compound raw material powder into oven for drying;

Step 2: subjecting the dried compound raw material powder to twin-screw extrusion, granulation and cutting to obtain micro-expanded material particles;

Step 3, introducing the micro-expanded material particles into the fluidized bed dryer for homogenization and dehydration;

Step 4. The homogenized and dehydrated material particles enter the roasting device for re-puffing, and the re-puffed material is cooled to obtain nutritious and convenient pearl rice.

Preferably, the particle size of the compound raw material powder is 0.2-0.45 mm.

Preferably, the temperature of the drying treatment is 45°C, and after the drying treatment, the water content of the compound raw material powder is ≤13%.

Preferably, in the second step, the conditions for twin-screw extrusion of the compound raw material powder are:

The temperature of the first stage: 50～70℃;

The temperature of the second stage: 110 ~ 130 ℃;

The third stage temperature: 130 ~ 150 ℃;

The fourth stage temperature: 110 ~ 130 ℃;

The fifth stage temperature: 100 ~ 120 ℃;

The screw speed is: 130 ~ 160r/min;

The amount of water added is 15% to 25%;

The rotating speed of the cutter head of the cutting machine is 400r/min.

Preferably, the empirical formula of the temperature of the homogenization and dehydration is:

为大气压力、

为基础匀化脱水温度。In the formula, m ₁ is the mass fraction of corn, m ₂ is the mass fraction of black rice, m ₃ is the mass fraction of black beans, v ₁ is the forward wind speed, v ₂ is the upward wind speed, and P _i is the fluidized bed stress at work,

is atmospheric pressure,

Base homogenization dehydration temperature.

Among them, the forward wind speed is 10-15m/s, the upward wind speed is 10m/s, and the basic homogenization and dehydration temperature is 40℃.

Preferably, the re-expanding conditions are:

The roasting device is divided into two temperature control zones, including:

The first zone, the baking temperature is 190 ~ 210 ℃;

The second zone, the baking temperature is 160 ~ 190 ℃;

The transmission speed is 0.2m/s.

The beneficial effects of the present invention: the nutritious and convenient pearl rice provided by the present invention contains a variety of raw materials, has high nutritional value, good product quality, and is convenient to eat, and is an ideal convenience food.

The method for producing nutritious and convenient pearl rice provided by the invention is friendly to the environment in the production process, without generation of waste residue, waste gas and harmful substances, and realizes green production. In addition, the whole process does not use any flavors, pigments, antioxidants, preservatives, and the products are safe to eat. At the same time, the production process does not produce toxic substances, achieving green production. The nutritious pearl rice processed by the method can effectively improve the quality of the edible food, and the nutritious and convenient pearl rice can be used as a prefabricated raw material for making pearl soup, which is time-saving and nutritious, and is a necessary food for fast-paced life.

Description of drawings

Fig. 1 is the production flow chart of the nutritious and convenient pearl rice of the present invention.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

As shown in Figure 1, the present invention provides a kind of nutritious convenient pearl rice, and the nutritious and convenient pearl rice is made up of the following raw materials in parts by weight:

85-95 servings of corn, 2-8 servings of black rice, 3-7 servings of black beans.

In another embodiment, the nutritionally convenient pearl rice consists of the following components in parts by mass:

90 servings of corn, 6 servings of black rice, and 4 servings of black beans.

The nutritious and convenient pearl rice provided by the invention takes corn as the main raw material, and is supplemented with nutritious black rice and black beans. The product has high nutritional value, is convenient to eat and has good taste.

The invention also provides a method for producing nutritious and convenient pearl rice. The nutritious pearl rice is prepared by twin-screw extrusion, granulation, cutting and re-puffing, and the drying temperature is controlled in the process of homogenization and dehydration, so as to improve the preparation efficiency and consumption of the nutritious pearl rice. Taste, including:

Step 1: Weigh the raw materials according to the parts by mass, including: 85-95 parts of corn, 2-8 parts of black rice and 3-7 parts of black beans, pulverize to obtain compound raw material powder, and put the obtained compound raw material powder into oven for drying;

Step 2: subjecting the dried compound raw material powder to twin-screw extrusion, granulation and cutting to obtain micro-expanded material particles;

Step 3, introducing the micro-expanded material particles into the fluidized bed dryer for homogenization and dehydration;

Step 4. The homogenized and dehydrated material particles enter the roasting device for re-puffing, and the re-puffed material is cooled to obtain nutritious and convenient pearl rice.

Use a pulverizer for directional pulverization (the so-called directional pulverization refers to pulverizing the raw materials to a specified particle size, so that the quality of the nutritional pearl rice can reach the best), because the pulverized particle size will directly affect the product quality, therefore, in the present invention, as a kind of Preferably, the particle size of the compound raw material powder is 0.2-0.45 mm; the pulverized compound raw material powder needs to be dried, and the drying temperature is 45°C, so that the moisture content is below 13%.

The twin-screw extrusion system is adopted, and the micro-expansion of the material is realized through the condition control to ensure the quality of the product.

The compound raw material powder is added to the twin-screw extrusion system, and the five-stage temperature control conditions are used for extrusion.

The five-stage temperature control conditions are:

The temperature of the first stage: 50～70℃;

The temperature of the second stage: 110 ~ 130 ℃;

The third stage temperature: 130 ~ 150 ℃;

The fourth stage temperature: 110 ~ 130 ℃;

The fifth stage temperature: 100 ~ 120 ℃;

The screw speed is: 130 ~ 160r/min;

In the process of screw extrusion, the amount of water added is precisely controlled to be 15% to 25%, the speed of the screw is 130 to 160r/min, the extruded strip material is cut and granulated, and the speed of the cutter head of the cutting machine is 400r/min. , to obtain micro-expanded material particles.

Using an induced draft fan will introduce the extruded granular material into the fluidized bed dryer for homogenization and dehydration. The empirical formula for the temperature of homogenization and dehydration is:

为大气压力、

为基础匀化脱水温度。In the formula, m ₁ is the mass fraction of corn, m ₂ is the mass fraction of black rice, m ₃ is the mass fraction of black beans, v ₁ is the forward wind speed, v ₂ is the upward wind speed, and P _i is the fluidized bed stress at work,

is atmospheric pressure,

Base homogenization dehydration temperature.

Among them, the forward wind speed is 10-15m/s, the upward wind speed is 10m/s, and the basic homogenization and dehydration temperature is 40℃.

The homogenized and dehydrated material particles enter the automatic baking device for re-puffing. The automatic baking device is divided into two temperature zones. The baking temperature of the first zone is 190-210 °C; the baking temperature of the second zone is 160 °C. ～190℃; the speed of the conveyor belt is 0.2m/s; the re-expanded material particles are cooled by the conveyor belt to obtain nutritious and convenient pearl rice.

Example 1

Step 1. Weigh 85 parts of corn, 8 parts of black rice and 7 parts of black beans, and pulverize them with a pulverizer. Because the particle size of pulverization will directly affect the product quality, therefore, in the present invention, as a kind of optimization, compound raw materials. The particle size of the powder is 0.2 to 0.45 mm; the pulverized compound raw material powder is dispersed and spread on a stainless steel tray, and placed in a 45°C oven for drying until the moisture content is 12.8%;

Step 2: Put the dried compound raw material powder into a twin-screw extruder for extrusion, and use five-stage temperature control conditions to extrude,

The five-stage temperature control conditions are:

The temperature of the first stage: 50℃;

The temperature of the second stage: 110℃;

The temperature of the third stage: 130℃;

Fourth stage temperature: 110℃;

The fifth stage temperature: 100℃;

In the process of screw extrusion, the amount of water added is precisely controlled to be 15%, the speed of the screw is 130r/min, the extruded strip material is cut and granulated, and the speed of the cutter head of the cutting machine is 400r/min to obtain micro-expanded materials. particles;

Step 3. Use the induced draft fan to introduce the micro-expanded material particles into the fluidized bed dryer for homogenization and dehydration,

The temperature of homogenization and dehydration satisfies:

为大气压力、

为基础匀化脱水温度。In the formula, m ₁ is the mass fraction of corn, m ₂ is the mass fraction of black rice, m ₃ is the mass fraction of black beans, v ₁ is the forward wind speed, v ₂ is the upward wind speed, and P _i is the fluidized bed stress at work,

is atmospheric pressure,

Base homogenization dehydration temperature.

Among them, the forward wind speed is 10-15m/s, the upward wind speed is 10m/s, the basic homogenization dehydration temperature is 40℃, and the pressure of the fluidized bed is 96.35kpa.

Step 4. The homogenized and dehydrated material particles enter the fully automatic baking device for re-puffing. The fully automatic baking device is divided into two temperature control zones. The baking temperature in the temperature control area is 160°C, the conveying speed of the baking device conveyor belt is 0.2m/s, and the re-expanded material particles are cooled to obtain the finished product of nutritious and convenient pearl rice.

Example 2

Step 1. Weigh 90 parts of corn, 6 parts of black rice, and 4 parts of black beans, and pulverize them with a pulverizer. Because the particle size of pulverization will directly affect the product quality, therefore, in the present invention, as a kind of optimization, compound raw materials. The particle size of the powder is 0.2-0.45mm; the pulverized compound raw material powder is dispersed and spread on a stainless steel tray, and placed in a 45°C oven for drying until the moisture content is 12.6%;

Step 2: Put the dried compound raw material powder into a twin-screw extruder for extrusion, and use five-stage temperature control conditions to extrude,

The five-stage temperature control conditions are:

The temperature of the first stage: 60℃;

The temperature of the second stage: 120℃;

The third stage temperature: 140℃;

Fourth stage temperature: 120℃;

The fifth stage temperature: 110℃;

In the process of screw extrusion, the amount of water added is precisely controlled to be 15%, the speed of the screw is 130r/min, the extruded strip material is cut and granulated, and the speed of the cutter head of the cutting machine is 500r/min to obtain micro-expanded materials. particles;

Step 3. Use the induced draft fan to introduce the micro-expanded material particles into the fluidized bed dryer for homogenization and dehydration,

The temperature of homogenization and dehydration satisfies:

为大气压力、

为基础匀化脱水温度。In the formula, m ₁ is the mass fraction of corn, m ₂ is the mass fraction of black rice, m ₃ is the mass fraction of black beans, v ₁ is the forward wind speed, v ₂ is the upward wind speed, and P _i is the fluidized bed stress at work,

is atmospheric pressure,

Base homogenization dehydration temperature.

Among them, the forward wind speed is 13m/s, the upward wind speed is 10m/s, the working pressure of the fluidized bed is 95.46kpa, and the basic homogenization and dehydration temperature is 40℃.

Step 4. The homogenized and dehydrated material particles enter the automatic baking device for re-puffing. The automatic baking device is divided into two temperature control zones, wherein the baking temperature of the first temperature control zone is 200°C, and the second The baking temperature in the temperature control area is 170°C, the conveying speed of the baking device conveyor belt is 0.2m/s, and the re-expanded material particles are cooled to obtain the finished product of nutritious and convenient pearl rice.

Example 3

Step 1: Weigh 95 parts of corn, 2 parts of black rice and 3 parts of black beans, and pulverize them with a pulverizer. Because the particle size of pulverization will directly affect the product quality, therefore, in the present invention, as a kind of optimization, compound raw materials. The particle size of the powder is 0.2-0.45mm; the pulverized compound raw material powder is dispersed and spread on a stainless steel tray, and then placed in a 45°C oven for drying until the moisture content is 12.5%;

Step 2: Put the dried compound raw material powder into a twin-screw extruder for extrusion, and use five-stage temperature control conditions to extrude,

The five-stage temperature control conditions are:

The temperature of the first stage: 70℃;

The temperature of the second stage: 130℃;

The third stage temperature: 150℃;

Fourth stage temperature: 130℃;

The fifth stage temperature: 120℃;

In the process of screw extrusion, the amount of water added is precisely controlled to be 15%, the speed of the screw is 130r/min, the extruded strip material is cut and granulated, and the speed of the cutter head of the cutting machine is 400r/min to obtain micro-expanded materials. particles;

Step 3. Use the induced draft fan to introduce the micro-expanded material particles into the fluidized bed dryer for homogenization and dehydration,

The temperature of homogenization and dehydration satisfies:

为大气压力、

为基础匀化脱水温度。In the formula, m ₁ is the mass fraction of corn, m ₂ is the mass fraction of black rice, m ₃ is the mass fraction of black beans, v ₁ is the forward wind speed, v ₂ is the upward wind speed, and P _i is the fluidized bed stress at work,

is atmospheric pressure,

Base homogenization dehydration temperature.

Among them, the forward wind speed is 15m/s, the upward wind speed is 10m/s, the working pressure of the fluidized bed is 94.72kpa, and the basic homogenization and dehydration temperature is 40℃.

Step 4. The homogenized and dehydrated material particles enter the fully automatic baking device for re-puffing. The fully automatic baking device is divided into two temperature control zones. The baking temperature of the temperature control area is 180°, the conveying speed of the conveyor belt of the baking device is 0.2m/s, and the re-expanded material particles are cooled to obtain the finished product of nutritious and convenient pearl rice.

Comparative Example 1

Step 1. Weigh 90 parts of corn, 6 parts of black rice, and 4 parts of black beans, and pulverize them with a pulverizer. Because the particle size of pulverization will directly affect the product quality, therefore, in the present invention, as a kind of optimization, compound raw materials. The particle size of the powder is 0.2-0.45mm; the pulverized compound raw material powder is dispersed and spread on a stainless steel tray, and placed in a 45°C oven for drying until the moisture content is 12.6%;

Step 2: Put the dried compound raw material powder into a twin-screw extruder for extrusion, and use five-stage temperature control conditions to extrude,

The five-stage temperature control conditions are:

The temperature of the first stage: 60℃;

The temperature of the second stage: 120℃;

The third stage temperature: 140℃;

Fourth stage temperature: 120℃;

The fifth stage temperature: 110℃;

In the process of screw extrusion, the amount of water added is precisely controlled to be 15%, the speed of the screw is 130r/min, the extruded strip material is cut and granulated, and the speed of the cutter head of the cutting machine is 500r/min to obtain micro-expanded materials. particles;

Step 3. Using an induced draft fan to introduce the micro-expanded material particles into the fluidized bed dryer for homogenization and dehydration, the temperature of homogenization and dehydration is 50°C, the forward wind speed is 13m/s, and the upward wind speed is 10m/s;

Step 4. The homogenized and dehydrated material particles enter the automatic baking device for re-puffing. The automatic baking device is divided into two temperature control zones, wherein the baking temperature of the first temperature control zone is 200°C, and the second The baking temperature in the temperature control area is 170°C, the conveying speed of the baking device conveyor belt is 0.2m/s, and the re-expanded material particles are cooled to obtain the finished product of nutritious and convenient pearl rice.

Table 1 is the evaluation index of nutritional pearl rice quality

Examples 1-3 and Comparative Example 1, as well as rice and corn with a particle size range of 0.2 to 0.45 mm after pulverization, were tested for quality. The test results are shown in Table 1. Pearl rice, through a reasonable ratio and by controlling the temperature of homogenization and dehydration in the preparation process, makes the pearl rice with convenient nutrition have excellent puffing degree, hardness and brittleness.

In Comparative Example 1, the temperature of homogenization and dehydration is not controlled according to the specific preparation parameters, and the puffing degree, hardness and brittleness of the obtained nutritious convenient pearl rice are obviously not as high as those of Examples 1-3. At the same time, the existing rice and corn are subjected to quality test after being pulverized. The test results show that the nutritional pearl rice prepared with a single ingredient is not only good in quality and nutrition, but also has no puffing, hardness and brittleness. Nutritious pearl rice (Examples 1-3) had high values.

Although the embodiment of the present invention has been disclosed as above, it is not limited to the application listed in the description and the embodiment, and it can be applied to various fields suitable for the present invention. For those skilled in the art, it can be easily Therefore, the invention is not limited to the specific details and illustrations shown and described herein without departing from the general concept defined by the appended claims and the scope of equivalents.

Claims (8)

1. a nutritious and convenient pearl rice is characterized in that, described nutritious and convenient pearl rice is made up of the raw material of following mass fractions: 85-95 servings of corn, 2-8 servings of black rice, 3-7 servings of black beans. 2. The nutritious and convenient pearl rice according to claim 1 is characterized in that, the said nutritious and convenient pearl rice is made up of the following components in parts by mass: 90 servings of corn, 6 servings of black rice, and 4 servings of black beans. 3. a kind of production method of nutritious and convenient pearl rice, is characterized in that, comprises: Step 1: Weigh the raw materials according to the parts by mass, including: 85-95 parts of corn, 2-8 parts of black rice and 3-7 parts of black beans, pulverize to obtain compound raw material powder, and put the obtained compound raw material powder into oven for drying; Step 2: subjecting the dried compound raw material powder to twin-screw extrusion, granulation and cutting to obtain micro-expanded material particles; Step 3, introducing the micro-expanded material particles into the fluidized bed dryer for homogenization and dehydration; Step 4. The homogenized and dehydrated material particles enter the roasting device for re-puffing, and the re-puffed material is cooled to obtain nutritious and convenient pearl rice. 4 . The method for producing nutritious and convenient pearl rice according to claim 3 , wherein the particle size of the compound raw material powder is 0.2-0.45 mm. 5 . 5 . The method for producing nutritious and convenient pearl rice according to claim 4 , wherein the temperature of the drying treatment is 45° C., and after the drying treatment, the water content of the compound raw material powder is less than or equal to 13%. 6 . 6. The production method of nutritious and convenient pearl rice according to claim 5, is characterized in that, in described step 2, the condition that described compound raw material powder carries out twin-screw extrusion is: The temperature of the first stage: 50～70℃; The temperature of the second stage: 110 ~ 130 ℃; The third stage temperature: 130 ~ 150 ℃; The fourth stage temperature: 110 ~ 130 ℃; The fifth stage temperature: 100 ~ 120 ℃; The screw speed is: 130 ~ 160r/min; The amount of water added is 15% to 25%; The rotating speed of the cutter head of the cutting machine is 400r/min. 7. the production method of nutritious convenient pearl rice according to claim 6 is characterized in that, the empirical formula of the temperature of described homogenization and dehydration is:

In the formula, m ₁ is the mass fraction of corn, m ₂ is the mass fraction of black rice, m ₃ is the mass fraction of black beans, v ₁ is the forward wind speed, v ₂ is the upward wind speed, and P _i is the fluidized bed stress at work,

is atmospheric pressure,

Base homogenization dehydration temperature; Among them, the forward wind speed is 10-15m/s, the upward wind speed is 10m/s, and the basic homogenization and dehydration temperature is 40℃. 8. the production method of nutritious convenient pearl rice according to claim 7 is characterized in that, the condition of described re-puffing is: The roasting device is divided into two temperature control zones, including: The first zone, the baking temperature is 190 ~ 210 ℃; The second zone, the baking temperature is 160 ~ 190 ℃; The transmission speed is 0.2m/s.

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