阅读说明：本技术 一种小麦谷朊粉的提取方法 (Extraction method of wheat gluten ) 是由 焦宇知 蒋舒婷 沈子杨 罗来庆 尹忞强 吴婷婷 谷绒 汪晓琳 刘溪 曹晗 冯兴前 于 2019-11-15 设计创作，主要内容包括：本发明公开了一种小麦谷朊粉的提取方法,本方案包括六个步骤,分别是和面、均质及发酵、三相分离、谷朊粉的制备、副产品处理和废水处理,利用上述六个步骤实现了谷朊粉和副产品的制备,废水的处理,面糊的均质及发酵便面糊熟化并实现蛋白质网络的迅速凝聚,且结合发酵作用,打开蛋白网络包裹层,便于淀粉的分离,提高了小麦的深加工转化率,同时对废水的收集处理,对上述五个步骤生产过程中产生的废水进行收集,对收集的废水进行过滤、厌氧发酵处理,获得沼气和能够再利用的蒸汽,减少了水资源的浪费,避免对环境造成污染。(The invention discloses a method for extracting wheat gluten, which comprises six steps of dough making, homogenizing and fermenting, three-phase separation, preparation of wheat gluten, byproduct treatment and wastewater treatment, wherein the six steps are utilized to realize the preparation of the wheat gluten and the byproduct, the wastewater treatment, the homogenization of batter and the fermentation are realized, the batter is cured, the rapid coagulation of a protein network is realized, a protein network wrapping layer is opened by combining the fermentation effect, the separation of starch is facilitated, the deep processing conversion rate of wheat is improved, meanwhile, the wastewater is collected and treated, the wastewater generated in the production process of the five steps is collected, the collected wastewater is filtered and subjected to anaerobic fermentation treatment, methane and steam which can be reused are obtained, the waste of water resources is reduced, and the pollution to the environment is avoided.)

1. A method for extracting wheat gluten is characterized by comprising the following steps: the method comprises the following steps:

s1 and dough: respectively putting the superfine wheat flour and purified water into a continuous flour-mixing machine to be mixed into a batter, and taking out for later use;

s2 homogenization and fermentation: placing the paste into a homogenizer for homogenization treatment, adding yeast during the homogenization treatment, and standing and fermenting the homogenized and cured paste;

s3 three-phase separation: conveying the fermented homogenized cooked batter into a three-phase horizontal screw centrifuge by using an eccentric screw for centrifugal treatment, and separating three-phase main products, namely light-phase C starch, middle-phase B starch and wheat gluten, heavy-phase A starch and fibers;

preparation of S4 wheat gluten: sending the middle-phase product into a curing tank for curing and stirring, conveying the cured and stirred middle-phase product into a two-phase horizontal spiral separator by using a pump for separation, outputting from the bottom flow of the separator to obtain concentrated-phase starch B, outputting from the overflow of the separator to obtain gluten, and sending the gluten into a gluten drying system for drying treatment to obtain gluten;

and (S5) byproduct treatment: collecting starch C, starch A and fiber obtained by three-phase separation and starch B obtained in the preparation process of wheat gluten, preparing starch, and outputting overflow of three-phase separation to obtain pentosan solution;

s6 wastewater treatment: and collecting the wastewater generated in the production process of the five steps, and filtering and carrying out anaerobic fermentation treatment on the collected wastewater to obtain methane and reusable steam.

2. The method for extracting wheat gluten from wheat as claimed in claim 1, wherein the first step of kneading the flour comprises: respectively putting the special second wheat flour and purified water into a continuous flour-mixing machine to be mixed into batter, wherein the ratio of the special second wheat flour to the purified water is 1:1.55, and the mixing time is half an hour.

3. The method for extracting wheat gluten from wheat as claimed in claim 1, wherein the second homogenizing and fermenting step comprises: and (2) putting the paste into a homogenizer for homogenization treatment, adjusting the pressure of the homogenizer by changing the gap of a homogenizing valve, adjusting the pressure to 50-90 bar by adopting a common homogenizer commonly used in the dairy industry, adding yeast in the homogenization treatment process, wherein the ratio of the paste to the yeast is 100:1, standing and fermenting the homogenized and cured paste at the fermentation temperature of 25 ℃ for one and a half hours.

4. The method for extracting wheat gluten from wheat as claimed in claim 1, wherein the third three-phase separation step is specifically: conveying the fermented homogenized and cured batter into a three-phase horizontal screw centrifuge by using an eccentric screw for centrifugal treatment, wherein the speed difference of the three-phase horizontal screw centrifuge is 45-75 r/min, the separation factor is 2000-4000, and the separated three-phase main products are respectively light-phase C starch, middle-phase B starch and wheat gluten, heavy-phase A starch and fiber.

5. The method for extracting wheat gluten from wheat as claimed in claim 1, wherein the fourth step of preparing wheat gluten is specifically: sending the middle-phase product into a curing tank for curing, placing the cured middle-phase product into a stirrer, then adding purified water, wherein the ratio of the cured middle-phase product to the purified water is 3:1, the stirring time is half an hour, conveying the cured and stirred middle-phase product into a two-phase horizontal spiral separator for separation by using a pump, the separation factor of the two-phase horizontal spiral separator is 3000-4000, obtaining concentrated-phase B starch from the underflow output of the separator, obtaining gluten from the overflow output of the separator, and sending the gluten into a gluten drying system for drying treatment to obtain gluten.

6. The method for extracting wheat gluten from wheat as claimed in claim 1, wherein the fifth step of by-product treatment comprises: collecting starch C, starch A and fiber obtained by three-phase separation and starch B obtained in the preparation process of wheat gluten, separately placing the collected starches, processing the starches by using respective suitable modes for preparing the starches, and outputting the prepared starches from overflow of the three-phase separation to obtain a pentosan solution.

7. The method for extracting wheat gluten from wheat as claimed in claim 1, wherein the sixth step of S6 waste water treatment comprises: collecting the waste water generated in the production process of the five steps, filtering the collected waste water by using a filter screen, wherein the diameter of the filter screen is 0.5 cm, filtering to take out large-particle floating slag, conveying the filtered waste water into an anaerobic tank by using a pump, performing anaerobic fermentation to prepare biogas, collecting the steam generated in the anaerobic fermentation process, and using the steam in the drying treatment process of starch and wheat gluten.

Technical Field

The invention relates to the technical field of wheat gluten preparation, in particular to a method for extracting wheat gluten.

Background

The wheat gluten is mainly composed of gliadin and glutenin, the protein content is up to 75% -85%, the wheat gluten contains fifteen kinds of amino acids necessary for human body, and the wheat gluten has various characteristics of strong water absorption, viscoelasticity, extensibility, film formability, adhesive thermosetting property, fat absorption emulsibility and the like.

At present, the production of wheat gluten in domestic market is in a starting stage, the deep processing conversion rate of wheat is very low, and in view of the fact that the production of wheat gluten in domestic market is in the starting stage, the deep processing conversion rate of wheat is very low, and a large amount of wastewater is generated in the production of wheat gluten, the treatment of the wastewater in the existing production process is not paid attention to, so that the waste of water resources is caused, and even the environmental pollution is caused.

Disclosure of Invention

The invention aims to provide a method for extracting wheat gluten, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a method for extracting wheat gluten powder comprises the following steps:

s1 and dough: respectively putting the superfine wheat flour and purified water into a continuous flour-mixing machine to be mixed into a batter, and taking out for later use;

s2 homogenization and fermentation: placing the paste into a homogenizer for homogenization treatment, adding yeast during the homogenization treatment, and standing and fermenting the homogenized and cured paste;

s3 three-phase separation: conveying the fermented homogenized cooked batter into a three-phase horizontal screw centrifuge by using an eccentric screw for centrifugal treatment, and separating three-phase main products, namely light-phase C starch, middle-phase B starch and wheat gluten, heavy-phase A starch and fibers;

preparation of S4 wheat gluten: sending the middle-phase product into a curing tank for curing and stirring, conveying the cured and stirred middle-phase product into a two-phase horizontal spiral separator by using a pump for separation, outputting from the bottom flow of the separator to obtain concentrated-phase starch B, outputting from the overflow of the separator to obtain gluten, and sending the gluten into a gluten drying system for drying treatment to obtain gluten;

and (S5) byproduct treatment: collecting starch C, starch A and fiber obtained by three-phase separation and starch B obtained in the preparation process of wheat gluten, preparing starch, and outputting overflow of three-phase separation to obtain pentosan solution;

s6 wastewater treatment: collecting the wastewater generated in the production process of the five steps, and filtering and carrying out anaerobic fermentation treatment on the collected wastewater to obtain methane and reusable steam;

preferably, the special wheat flour and the purified water are respectively put into a continuous flour-mixing machine to be mixed into the batter, the ratio of the added special wheat flour to the purified water is 1:1.55, the mixing time is half an hour, the continuous flour-mixing machine enables flour particles to be fully hydrated to form uniform batter, large particles or small dough which are not uniformly mixed are avoided, and the subsequent homogenizing process is conveniently and smoothly carried out.

Preferably, the batter is put into a homogenizer for homogenization treatment, the pressure of the homogenizer is adjusted by changing the gap of a homogenizing valve, the homogenizer is a common homogenizer commonly used in the dairy industry, the pressure is adjusted to 50-90 bar, the pressure of the batter is quickly restored to normal pressure from high pressure when the batter passes through the homogenizing valve, the batter is convenient to cure and the rapid coagulation of a protein network is realized due to the sudden change of the pressure and the shearing action of the homogenizing valve, yeast is added in the homogenization treatment process, the ratio of the batter to the yeast is 100:1, the homogenized and cured batter is stood for fermentation, the fermentation temperature is 25 ℃, the fermentation time is half an hour, the homogenization curing and the fermentation are combined, an outer wrapping layer of the batter is dissolved, the separation of starch is convenient, and the starch yield is improved.

Preferably, the fermented homogenized and cooked batter is conveyed into a three-phase horizontal screw centrifuge by an eccentric screw for centrifugal treatment, the speed difference of the three-phase horizontal screw centrifuge is 45-75 r/min, the separation factor is 2000-4000, the speed difference of a screw and a rotary drum can be adjusted at any time by adopting a double-motor double-speed reducer technology, a nozzle is arranged at the overflow outlet end, a middle phase can be separated, and three-phase main products are respectively light-phase C starch, middle-phase B starch and wheat gluten, heavy-phase A starch and fibers.

Preferably, the middle-phase product is sent into a curing tank for curing, the cured middle-phase product is put into a stirrer, then adding purified water, wherein the ratio of the middle phase product after curing to the purified water is 3:1, the stirring time is half an hour, the materials are fully kneaded under axial and pressure and certain radial force in the machine during the stirring process, the method comprises the steps of enabling protein in materials to be in uniform contact with water to generate water and enable the materials to continuously output pasty flour slurry, enabling gluten protein to be aggregated into silk-shaped small gluten, conveying cured middle-phase products to a two-phase horizontal spiral separator for separation by using a pump, enabling the separation factor of the two-phase horizontal spiral separator to be 3000-4000, obtaining thick-phase starch B from the bottom flow output of the separator, obtaining gluten from the overflow output of the separator, and conveying the gluten to a gluten drying system for drying treatment to obtain gluten.

Preferably, C starch, A starch, fiber and B starch obtained in the preparation process of the wheat gluten are collected, the collected starches are separately placed and processed in a suitable mode respectively for preparing the starch, in the preparation process of the starch, equipment such as a centrifugal machine and a centrifugal screen are mainly used for carrying out centrifugal treatment on the C starch, the A starch, the fiber and the B starch obtained in the preparation process of the wheat gluten, residual bran is removed, the centrifuged product is placed into a multi-stage cyclone for washing, purified water is continuously added in the washing process, finally the washed product is dewatered by a scraper centrifugal machine, the dehydrated residual product is dried to obtain the starch, and the pentosan solution is obtained from overflow output of three-phase separation.

Preferably, the wastewater generated in the five steps of production process is collected, the COD content in the wastewater for producing the vital gluten is higher, the wastewater is suitable for processing and producing the biogas, the collected wastewater is filtered by a filter screen, the diameter of the filter screen is 0.5 cm, large-particle scum is filtered and taken out, the filtered wastewater is conveyed into an anaerobic tank by a pump to be subjected to anaerobic fermentation to prepare the biogas, the steam generated in the anaerobic fermentation process is collected, and the steam is used in the drying treatment process of the starch and the vital gluten.

Compared with the prior art, the invention has the beneficial effects that: the scheme designs an extraction method of wheat gluten, and the scheme comprises six steps of dough making, homogenizing and fermenting, three-phase separation, preparation of the wheat gluten, byproduct treatment and wastewater treatment.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a technical scheme that: a method for extracting wheat gluten powder comprises the following steps:

s1 and dough: respectively putting the superfine wheat flour and purified water into a continuous flour-mixing machine to be mixed into a batter, and taking out for later use;

s2 homogenization and fermentation: placing the paste into a homogenizer for homogenization treatment, adding yeast during the homogenization treatment, and standing and fermenting the homogenized and cured paste;

s3 three-phase separation: conveying the fermented homogenized cooked batter into a three-phase horizontal screw centrifuge by using an eccentric screw for centrifugal treatment, and separating three-phase main products, namely light-phase C starch, middle-phase B starch and wheat gluten, heavy-phase A starch and fibers;

preparation of S4 wheat gluten: sending the middle-phase product into a curing tank for curing and stirring, conveying the cured and stirred middle-phase product into a two-phase horizontal spiral separator by using a pump for separation, outputting from the bottom flow of the separator to obtain concentrated-phase starch B, outputting from the overflow of the separator to obtain gluten, and sending the gluten into a gluten drying system for drying treatment to obtain gluten;

and (S5) byproduct treatment: collecting starch C, starch A and fiber obtained by three-phase separation and starch B obtained in the preparation process of wheat gluten, preparing starch, and outputting overflow of three-phase separation to obtain pentosan solution;

s6 wastewater treatment: and collecting the wastewater generated in the production process of the five steps, and filtering and carrying out anaerobic fermentation treatment on the collected wastewater to obtain methane and reusable steam.

The special wheat flour and the purified water are respectively put into a continuous flour mixing machine to be mixed into the batter, the ratio of the special wheat flour to the purified water is 1:1.55, the mixing time is half an hour, the continuous flour mixing machine enables flour particles to be fully hydrated to form uniform batter, large particles or small dough which are not uniformly mixed are avoided, and the subsequent homogenizing process is conveniently and smoothly carried out.

The method comprises the steps of putting batter into a homogenizer for homogenization treatment, adjusting the pressure of the homogenizer by changing the gap of a homogenizing valve, wherein the homogenizer adopts a common homogenizer commonly used in the dairy industry, adjusting the pressure to 50-90 bar, rapidly recovering the pressure of the batter to normal pressure from high pressure when the batter passes through the homogenizing valve, facilitating the curing of the batter and realizing the rapid coagulation of protein networks due to the sudden change of the pressure and the shearing action of the homogenizing valve, adding yeast in the homogenization treatment process, wherein the ratio of the batter to the yeast is 100:1, standing and fermenting the homogenized and cured batter at the fermentation temperature of 25 ℃ for half an hour, combining the homogenizing and curing with the fermentation, dissolving an outer wrapping layer of the batter, facilitating the separation of starch and improving the yield of the starch.

This embodiment contrast prior art, has utilized fermentation process, adopts suitable fermentation degree, reaches the structure that neither destroys wheat starch and wheat gluten, can open starch parcel layer completely again for starch and wheat gluten maximize under less rotational speed separates it out, and the separation speed reduces, diminishes starch molecular structure destruction probability, and the quality and the yield of accessory substance starch improve.

Conveying the fermented homogenized and cured batter into a three-phase horizontal screw centrifuge by using an eccentric screw for centrifugal treatment, wherein the speed difference of the three-phase horizontal screw centrifuge is 45-75 r/min, the separation factor is 2000-4000, the speed difference of a screw and a rotary drum can be adjusted at any time by adopting a double-motor double-speed reducer technology, a nozzle is arranged at the overflow outlet end, a middle phase can be separated, and three-phase main products are respectively light-phase C starch, middle-phase B starch and wheat gluten, heavy-phase A starch and fibers.

Delivering the middle-phase product into a curing tank for curing, putting the cured middle-phase product into a stirrer, then adding purified water, wherein the ratio of the middle phase product after curing to the purified water is 3:1, the stirring time is half an hour, the materials are fully kneaded under axial and pressure and certain radial force in the machine during the stirring process, the method comprises the steps of enabling protein in materials to be in uniform contact with water to generate water and enable the materials to continuously output pasty flour slurry, enabling gluten protein to be aggregated into silk-shaped small gluten, conveying cured middle-phase products to a two-phase horizontal spiral separator for separation by using a pump, enabling the separation factor of the two-phase horizontal spiral separator to be 3000-4000, obtaining thick-phase starch B from the bottom flow output of the separator, obtaining gluten from the overflow output of the separator, and conveying the gluten to a gluten drying system for drying treatment to obtain gluten.

Collecting C starch, A starch, fiber and B starch obtained in the preparation process of wheat gluten, wherein the C starch, the A starch, the fiber and the B starch are obtained in the preparation process of the wheat gluten, the collected starches are separately placed and processed in a suitable mode for preparing the starch, in the preparation process of the starch, equipment such as a centrifugal machine, a centrifugal screen and the like are mainly used for carrying out centrifugal treatment on the C starch, the A starch, the fiber and the B starch obtained in the preparation process of the wheat gluten, residual bran is removed, a centrifuged product is placed into a multi-stage cyclone for washing, purified water is continuously added in the washing process, finally, a washed product is dewatered by a scraper centrifuge, the dehydrated residual product is dried to obtain the starch, and a pentosan solution is obtained from overflow output of three-phase separation.

The waste water generated in the production process of the five steps is collected, the COD content in the waste water for producing the vital gluten is higher, the waste water is suitable for processing and producing methane, the collected waste water is filtered by a filter screen, the aperture of the filter screen is 0.5 cm, large-particle scum is filtered and taken out, the filtered waste water is conveyed into an anaerobic tank by a pump to be subjected to anaerobic fermentation to prepare methane, steam generated in the anaerobic fermentation process is collected and used in the drying treatment process of starch and vital gluten, the methane can be used for heating and drying firepower in the power generation and production process, impurities in the treated water are reduced, and the emission standard is met.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.