阅读说明：本技术 一种用发芽豆类提取植物蛋白的工艺方法 (Process for extracting plant protein from germinated beans ) 是由 彭振飞 于 2021-09-18 设计创作，主要内容包括：本发明公开了一种用发芽豆类提取植物蛋白的工艺方法,属于豆类提取植物蛋白技术领域,采用上述步骤后将原料豆类筛选浸泡,确保控制豆类生芽1cm长,由胚芽转变成植物,加工的原料就由种子变为植物,胚芽的转变减少了脂肪的含量,并采用经脱胚旋流器分离方式相比现有技术分离更加省事,使其可以提取出低脂低钠的蛋白粉。(The invention discloses a process method for extracting plant protein by using sprouted beans, which belongs to the technical field of extracting plant protein by beans.)

1. A process for extracting vegetable protein from germinated beans includes the following steps:

raw material acceptance checking:

selecting mature, full and moldless bean raw materials;

carrying out moisture detection and impurity detection on the selected bean raw materials, receiving the bean raw materials provided by qualified suppliers and carrying out spot inspection on pesticide residues;

dust removal and screening:

putting the qualified bean raw materials into a winnowing machine for dedusting and removing plant impurities;

screening out unqualified beans and impurities by using screening equipment;

a bean soaking step:

weighing the screened and dedusted bean raw materials, putting the bean raw materials into the tank for repeated cleaning, removing the bean washing water, and injecting clear water into the bean soaking tank for soaking;

heating the bean materials to 26-30 deg.C at constant temperature, and soaking for 20 hr until the bean materials germinate to 1 cm;

a cleaning step:

soaking the bean raw materials thoroughly, and then flushing the bean raw materials into a chute by adopting flowing clear water;

discharging the soybean soaking water, washing with clear water, and lifting to a germ swirler by using a pump;

conveying the bean raw material which is peeled and plumule-removed by the plumule swirler to a gravity curved sieve to remove water, and entering a needle grinding coin temporary storage tank for temporary storage;

a step of grinding:

conveying the bean raw materials in the temporary storage tank to a needle mill by using a speed-regulating feeder to grind the bean raw materials into thick liquid;

separation and deslagging:

conveying the ground bean raw material liquid to a centrifugal screen through a pipeline for high-speed centrifugal screening to remove bean dregs;

protein and starch separation:

conveying the bean raw material liquid without bean dregs into a horizontal screw to obtain protein and starch, separately processing the starch and the protein, and conveying the separated and extracted protein liquid into a storage tank for later use;

a heating flocculation step:

heating the protein liquid in the extracted storage tank to 55-58 ℃ through a heat exchanger for flocculation;

a neutralization step:

adding alkali into the protein curd obtained by primary separation in a blending tank to adjust the pH value to 7.0-7.3;

homogenizing, flash evaporation and sterilization:

conveying the neutralized protein curd to a flash evaporation sterilization tank through a homogenizing pump, and conveying the protein curd to a flash evaporation tank at a flow rate of 4.0-8.0 direction/h by opening a flash evaporation valve and controlling the temperature at 135 ℃;

sterilizing the neutralized protein liquid by adopting a high-temperature steam mode, conveying the sterilized protein milk to a degassing tank through a pipeline, and starting a vacuum pump for degassing;

a spray drying step:

spray drying the homogenized curd;

a sieving step:

screening the dried protein powder by a 40-mesh screen;

stirring:

and (4) completely feeding the dried and screened protein powder into a finished product tank, fully stirring, and packaging to obtain a finished product.

2. The process of extracting plant protein from germinated beans as claimed in claim 1, wherein the plant protein is extracted from germinated beans by the following steps: the bean raw materials selected in the raw material acceptance step are mung beans or/and peas;

in the bean soaking step, bean raw materials are cleaned in a circulating filtration mode of repeatedly discharging water and injecting water;

in the bean soaking step, the bean soaking tank is heated to 27 ℃ at constant temperature.

3. The process of extracting plant protein from germinated beans as claimed in claim 1, wherein the plant protein is extracted from germinated beans by the following steps: during constant temperature heating of the soybean soaking tank, constant temperature control is performed in a PID constant temperature control internal circulation mode.

4. The process of extracting plant protein from germinated beans as claimed in claim 1, wherein the plant protein is extracted from germinated beans by the following steps: and continuously monitoring the pH value of the curd in the neutralization step and adjusting the pH value of the curd to be within 7.0-7.3 of the required pH value all the time.

5. The process of extracting plant protein from germinated beans as claimed in claim 1, wherein the plant protein is extracted from germinated beans by the following steps: the vacuum pressure of the degassing tank in the homogenizing flash evaporation sterilization step is 0.04-0.08 MPa.

6. The process of extracting plant protein from germinated beans as claimed in claim 1, wherein the plant protein is extracted from germinated beans by the following steps: in the spray drying step, the drying process ensures that the induced air temperature is 60-110 ℃, the air supply temperature is 120-200 ℃, the dried protein powder is monitored, and the process parameters are adjusted to ensure that the color and the moisture of the product are 6.0-7.0%.

7. The process of extracting plant protein from germinated beans as claimed in claim 1, wherein the plant protein is extracted from germinated beans by the following steps: before packaging in the process of packaging finished products, the quality of a packaging bag is checked to be free of pollution and damage and foreign matters in the packaging bag;

and then packaging the dried protein according to requirements, and tightly binding the inner bag opening after the weight is qualified, so that the outer bag is tightly sewed without deflection and has no secondary sewing.

8. The process of extracting plant protein from germinated beans as claimed in claim 1, wherein the plant protein is extracted from germinated beans by the following steps: a metal detection step is also included after the stirring step:

carrying out metal detection on all the packaged products in each bag;

the key limit values of metal detection are as follows: fe phi 2.0 mm; sus phi 2.5 mm; Non-Fe phi 2.5 mm.

9. The process of extracting plant protein from germinated beans as claimed in claim 8, wherein said process comprises the steps of: the method also comprises a stacking and warehousing step after the metal detection step:

after being qualified by physical and chemical detection, the materials are orderly stacked and stored in a warehouse.

Technical Field

The invention relates to a process for extracting vegetable protein from beans, in particular to a process method for extracting vegetable protein from germinated beans, belonging to the technical field of extracting vegetable protein from beans.

Background

In the prior art, aiming at a processing method for extracting vegetable protein by adopting beans, the raw material pea is firstly screened;

crushing the screened peas, wherein fat cannot be separated from the crushed peas during separation after crushing, so that the extracted vegetable protein has high fat content;

secondly, the pH value needs to be adjusted in the separation process, and alkali and acid are added, so that the content of sodium is higher, and the method is not suitable for the current consumer groups;

therefore, a process for extracting vegetable protein from germinated beans is designed to solve the problems.

Disclosure of Invention

The invention mainly aims to provide a process method for extracting plant protein by using germinated beans, which is characterized in that the raw beans are screened and soaked after the steps are adopted, the 1cm length of bean sprouts is ensured to be controlled, the germs are converted into plants, the processed raw materials are converted from seeds into plants, the conversion of the germs reduces the content of fat, and compared with the prior art, the separation by a degerming cyclone is more labor-saving, so that the low-fat and low-sodium protein powder can be extracted.

The purpose of the invention can be achieved by adopting the following technical scheme:

a process for extracting plant protein from germinated beans includes the following steps:

raw material acceptance checking:

selecting mature, full and moldless bean raw materials;

carrying out moisture detection and impurity detection on the selected bean raw materials, receiving the bean raw materials provided by qualified suppliers and carrying out spot inspection on pesticide residues;

dust removal and screening:

putting the qualified bean raw materials into a winnowing machine for dedusting and removing plant impurities;

screening out unqualified beans and impurities by using screening equipment;

a bean soaking step:

weighing the screened and dedusted bean raw materials, putting the bean raw materials into a bean soaking tank for repeated cleaning, removing bean washing water, and injecting clear water into the bean soaking tank for soaking;

heating the bean soaking tank containing bean materials to 26-30 deg.C at constant temperature, and soaking for 20 hr until the bean materials germinate and sprout to 1 cm;

a cleaning step:

soaking the bean raw materials thoroughly, and then flushing the bean raw materials into a chute by adopting flowing clear water;

discharging the soybean soaking water, washing with clear water, and lifting to a germ swirler by using a pump;

conveying the bean raw materials peeled off from the embryo cyclone to a gravity curved sieve to remove water, and entering a needle grinding money temporary storage tank for temporary storage;

a step of grinding:

conveying the bean raw materials in the temporary storage tank to a needle mill by using a speed-regulating feeder to grind the bean raw materials into thick liquid;

separation and deslagging:

conveying the ground bean raw material liquid to a centrifugal screen through a pipeline for high-speed centrifugal screening to remove bean dregs;

protein and starch separation:

conveying the bean raw material liquid without bean dregs into a horizontal screw to obtain protein and starch, separately processing the starch and the protein, and conveying the separated and extracted protein liquid into a storage tank for later use;

a heating flocculation step:

heating the protein liquid in the extracted storage tank to 55-58 ℃ through a heat exchanger for flocculation;

a neutralization step:

adding alkali into the protein curd obtained by primary separation in a blending tank to adjust the pH value to 7.0-7.3;

homogenizing, flash evaporation and sterilization:

conveying the neutralized protein curd to a flash evaporation sterilization tank through a homogenizing pump, and conveying the protein curd to a flash evaporation tank at a flow rate of 4.0-8.0 direction/h by opening a flash evaporation valve and controlling the temperature at 135 ℃;

sterilizing the neutralized protein liquid by adopting a high-temperature steam mode, conveying the sterilized protein milk to a degassing tank through a pipeline, and starting a vacuum pump for degassing;

a spray drying step:

spray drying the homogenized curd;

a sieving step:

screening the dried protein powder by a 40-mesh screen;

stirring:

and (4) completely feeding the dried and screened protein powder into a finished product tank, fully stirring, and packaging to obtain a finished product.

Preferably, the bean raw materials selected in the raw material acceptance step are mung beans or/and peas;

in the bean soaking step, bean raw materials are cleaned in a circulating filtration mode of repeatedly discharging water and injecting water;

in the bean soaking step, the bean soaking tank is heated to 27 ℃ at constant temperature.

Preferably, the constant temperature control is carried out by adopting a PID constant temperature control internal circulation mode in the constant temperature heating of the bean soaking tank.

Preferably, the pH of the curd is continuously monitored and adjusted during the neutralization step so that the pH of the curd is always within the desired range of 7.0 to 7.3.

Preferably, the vacuum pressure of the degassing tank in the homogenizing flash sterilization step is 0.04-0.08 Mpa.

Preferably, in the spray drying step, the drying process ensures that the induced air temperature is 60-110 ℃, the air supply temperature is 120-200 ℃, the dried protein powder is monitored, and the process parameters are adjusted to ensure that the color and the moisture of the product are 6.0-7.0%.

Preferably, before packaging in the process of packaging finished products, the quality of the packaging bag is checked to be free of pollution and damage, and foreign matters are not in the packaging bag;

and then packaging the dried protein according to requirements, and tightly binding the inner bag opening after the weight is qualified, so that the outer bag is tightly sewed without deflection and has no secondary sewing.

Preferably, the method further comprises a metal detection step after the stirring step:

carrying out metal detection on all the packaged products in each bag;

the key limit values of metal detection are as follows: fe phi 2.0 mm; sus phi 2.5 mm; Non-Fe phi 2.5 mm.

Preferably, the method further comprises a stacking and warehousing step after the metal detection step:

after being qualified by physical and chemical detection, the materials are orderly stacked and stored in a warehouse.

The invention has the beneficial technical effects that:

the invention provides a process for extracting plant protein from germinated beans, which comprises the steps of screening and soaking raw beans, ensuring that the bean sprouts are controlled to be 1cm long, converting the germs into plants, converting the processed raw materials from seeds into plants, reducing the fat content by the transformation of the germs, and adopting a separation mode of a degerming cyclone, which is more trouble-saving than the separation mode of the prior art, so that the low-fat and low-sodium protein powder can be extracted.

Drawings

FIG. 1 is a process flow diagram of a preferred embodiment of a process for extracting vegetable proteins from germinated legumes in accordance with the present invention;

FIG. 2 is a comparison graph of fat content measurement according to a preferred embodiment of the method for extracting plant protein from germinated beans according to the present invention.

Detailed Description

In order to make the technical solutions of the present invention more clear and definite for those skilled in the art, the present invention is further described in detail below with reference to the examples and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

As shown in fig. 1-2, the present embodiment provides a process for extracting plant protein from germinated beans, which comprises the following steps:

raw material acceptance checking:

selecting mature, full and moldless bean raw materials;

carrying out moisture detection and impurity detection on the selected bean raw materials, receiving the bean raw materials provided by qualified suppliers and carrying out spot inspection on pesticide residues;

dust removal and screening:

putting the qualified bean raw materials into a winnowing machine for dedusting and removing plant impurities;

screening out unqualified beans and impurities by using screening equipment;

a bean soaking step:

weighing the screened and dedusted bean raw materials, putting the bean raw materials into a bean soaking tank for repeated cleaning, removing bean washing water, and injecting clear water into the bean soaking tank for soaking;

heating the bean soaking tank containing bean materials to 26-30 deg.C at constant temperature, and soaking for 20 hr until the bean materials germinate and sprout to 1 cm;

a cleaning step:

soaking the bean raw materials thoroughly, and then flushing the bean raw materials into a chute by adopting flowing clear water;

discharging the soybean soaking water, washing with clear water, and lifting to a germ swirler by using a pump;

conveying the bean raw materials peeled off from the embryo cyclone to a gravity curved sieve to remove water, and entering a needle grinding money temporary storage tank for temporary storage;

a step of grinding:

conveying the bean raw materials in the temporary storage tank to a needle mill by using a speed-regulating feeder to grind the bean raw materials into thick liquid;

separation and deslagging:

conveying the ground bean raw material liquid to a centrifugal screen through a pipeline for high-speed centrifugal screening to remove bean dregs;

protein and starch separation:

conveying the bean raw material liquid without bean dregs into a horizontal screw to obtain protein and starch, separately processing the starch and the protein, and conveying the separated and extracted protein liquid into a storage tank for later use;

a heating flocculation step:

heating the protein liquid in the extracted storage tank to 55-58 ℃ through a heat exchanger for flocculation;

a neutralization step:

adding alkali into the protein curd obtained by primary separation in a blending tank to adjust the pH value to 7.0-7.3;

homogenizing, flash evaporation and sterilization:

conveying the neutralized protein curd to a flash evaporation sterilization tank through a homogenizing pump, and conveying the protein curd to a flash evaporation tank at a flow rate of 4.0-8.0 direction/h by opening a flash evaporation valve and controlling the temperature at 135 ℃;

sterilizing the neutralized protein liquid by adopting a high-temperature steam mode, conveying the sterilized protein milk to a degassing tank through a pipeline, and starting a vacuum pump for degassing;

a spray drying step:

spray drying the homogenized curd;

a sieving step:

screening the dried protein powder by a 40-mesh screen;

stirring:

and (4) completely feeding the dried and screened protein powder into a finished product tank, fully stirring, and packaging to obtain a finished product.

In conclusion, the raw beans are screened and soaked after the steps are adopted, the fact that 1cm of bean sprouts are controlled, the germs are converted into plants is guaranteed, the processed raw materials are converted into the plants from seeds, the conversion of the germs reduces the content of fat, and compared with the prior art, the separation method of the degerming cyclone is more labor-saving, so that the low-fat and low-sodium protein powder can be extracted.

In the embodiment, the bean raw materials selected in the raw material acceptance step are mung beans or/and peas;

in the bean soaking step, bean raw materials are cleaned in a circulating filtration mode of repeatedly discharging water and injecting water;

in the bean soaking step, the bean soaking tank is heated to 27 ℃ at constant temperature.

In this embodiment, the constant temperature control is performed by using the PID constant temperature control internal circulation method in the constant temperature heating of the soybean soaking tank.

In the embodiment, the pH value of the curd is continuously monitored and adjusted in the neutralization step, so that the pH value of the curd is always kept within 7.0-7.3 of the requirement.

In this example, the vacuum pressure of the degassing tank in the homogenizing flash sterilization step is 0.04-0.08 MPa.

In this embodiment, in the spray drying step, the drying process ensures that the induced air temperature is 60-110 ℃, the air supply temperature is 120-200 ℃, the dried protein powder is monitored, and the process parameters are adjusted to ensure that the color and moisture of the product are 6.0-7.0%.

In this embodiment, before packaging in the process of packaging the finished product, the quality of the packaging bag is checked to be free of pollution and damage, and no foreign matter is in the bag;

and then packaging the dried protein according to requirements, and tightly binding the inner bag opening after the weight is qualified, so that the outer bag is tightly sewed without deflection and has no secondary sewing.

In this embodiment, the method further comprises a metal detection step after the stirring step:

carrying out metal detection on all the packaged products in each bag;

the key limit values of metal detection are as follows: fe phi 2.0 mm; sus phi 2.5 mm; Non-Fe phi 2.5 mm.

In this embodiment, after the metal detecting step, the method further includes a stacking and warehousing step:

after being qualified by physical and chemical detection, the materials are orderly stacked and stored in a warehouse.

As shown in figure 2, after the process flow is detected, the left side of the process flow is the fat content in the existing protein powder, and the right side of the process flow is that the fat content of the protein powder produced by the process is obviously lower.

The above description is only for the purpose of illustrating the present invention and is not intended to limit the scope of the present invention, and any person skilled in the art can substitute or change the technical solution of the present invention and its conception within the scope of the present invention.