CN117430726B - Corn steep liquor drying method - Google Patents
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- CN117430726B CN117430726B CN202311625046.8A CN202311625046A CN117430726B CN 117430726 B CN117430726 B CN 117430726B CN 202311625046 A CN202311625046 A CN 202311625046A CN 117430726 B CN117430726 B CN 117430726B
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- 240000008042 Zea mays Species 0.000 title claims abstract description 99
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 title claims abstract description 99
- 235000002017 Zea mays subsp mays Nutrition 0.000 title claims abstract description 99
- 235000005822 corn Nutrition 0.000 title claims abstract description 99
- 238000001035 drying Methods 0.000 title claims abstract description 58
- 239000000463 material Substances 0.000 claims abstract description 80
- 239000000843 powder Substances 0.000 claims abstract description 48
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 239000000706 filtrate Substances 0.000 claims abstract description 40
- 238000004062 sedimentation Methods 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 241000196324 Embryophyta Species 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000013049 sediment Substances 0.000 claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 19
- 238000001704 evaporation Methods 0.000 claims abstract description 18
- 108090000623 proteins and genes Proteins 0.000 claims abstract description 18
- 102000004169 proteins and genes Human genes 0.000 claims abstract description 18
- 238000002791 soaking Methods 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims description 25
- 235000018102 proteins Nutrition 0.000 claims description 17
- 230000008020 evaporation Effects 0.000 claims description 16
- 239000007787 solid Substances 0.000 claims description 16
- 238000004321 preservation Methods 0.000 claims description 7
- 108010068370 Glutens Proteins 0.000 claims description 2
- 235000021312 gluten Nutrition 0.000 claims description 2
- 235000012054 meals Nutrition 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000010298 pulverizing process Methods 0.000 abstract 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- 150000001413 amino acids Chemical class 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 108090000765 processed proteins & peptides Proteins 0.000 description 3
- 229930195730 Aflatoxin Natural products 0.000 description 2
- XWIYFDMXXLINPU-UHFFFAOYSA-N Aflatoxin G Chemical compound O=C1OCCC2=C1C(=O)OC1=C2C(OC)=CC2=C1C1C=COC1O2 XWIYFDMXXLINPU-UHFFFAOYSA-N 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 2
- 239000005409 aflatoxin Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 238000001694 spray drying Methods 0.000 description 2
- 239000003053 toxin Substances 0.000 description 2
- 231100000765 toxin Toxicity 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229920002261 Corn starch Polymers 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000008120 corn starch Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003895 organic fertilizer Substances 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011802 pulverized particle Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B30/00—Preparation of starch, degraded or non-chemically modified starch, amylose, or amylopectin
- C08B30/06—Drying; Forming
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Cereal-Derived Products (AREA)
Abstract
The invention discloses a corn steep liquor drying method, and belongs to the technical field of corn deep processing. The method comprises the following steps: (1) soaking and filtering plant ash to obtain a material 1 and a filtrate 1; (2) Regulating pH of the corn soaking water with filtrate 1, heating, raising temperature, slowly lowering temperature, standing, filtering to obtain material 2 and filtrate 2, mixing material 2 with wet corn protein powder, drying, and pulverizing to obtain material 3; (3) Concentrating the filtrate 2 in vacuum, flash evaporating, standing for sedimentation, and removing sediment to obtain liquid 1; (4) Concentrating the liquid 1 in vacuum, flash evaporating, standing for sedimentation, and removing sediment to obtain liquid 2; (5) mixing the material 3 with the liquid 2 to obtain a material 4; and (6) drying and crushing the material 4 to obtain corn steep liquor dry powder. The invention reduces the viscosity of materials by changing the drying process, can continuously produce and reduce the energy consumption, and the prepared corn steep liquor dry powder has high protein content, improves the overall quality and widens the application field of corn steep liquor.
Description
Technical Field
The invention relates to a corn steep liquor drying method, and belongs to the technical field of corn deep processing.
Background
Corn steep liquor is a major byproduct of wet corn starch production and is formed by concentrating corn steep water. The compound fertilizer has complex components, contains a large amount of sulfurous acid, peptide, polysaccharide, protein and various amino acids as well as inorganic salts such as phosphorus, potassium, magnesium, calcium and the like, and is widely applied to the fermentation industry and the organic fertilizer industry.
Because the dry matter of the corn steep liquor is only 45-50%, the corn steep liquor has strong hygroscopicity, is difficult to solidify, cannot be stored for a long time, is easy to ferment and deteriorate, affects the actual application effect, can only be stored, has high transportation difficulty and has high transportation cost. At present, the solid products of corn steep liquor are only dried by a spray drying tower, but because corn steep liquor has complex components and strong viscosity, the phenomenon of sticking walls can occur, the phenomenon of sticking walls not only affects the drying effect, but also reduces the working efficiency of equipment, and continuous production cannot be carried out, so that the drying cost is high.
Therefore, the corn steep liquor drying method capable of being continuously produced solves the problem that corn steep liquor is difficult to dry, and is very important for the production and application of corn steep liquor.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a corn steep liquor drying method which can continuously produce, reduce energy consumption and improve the overall quality of the prepared corn steep liquor dry powder.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a method for drying corn steep liquor, comprising the steps of:
(1) Dissolving plant ash in water, soaking for 2-5h, and filtering with a plate frame to obtain a material 1 and a filtrate 1;
(2) Adjusting pH of the corn soaking water to 4.0-5.0 with filtrate 1, heating to 80-90 ℃, carrying out heat preservation treatment for 15-30 minutes, slowly cooling to 25-30 ℃, standing for 2-4 hours, filtering with a plate frame to obtain a material 2 and filtrate 2, mixing the material 2 with wet corn protein powder, drying with a tube bundle dryer, and crushing to 35-65 meshes after drying to obtain a material 3;
(3) First-stage concentration: concentrating the filtrate 2 in vacuum until the solid content is 30-50%, then carrying out flash evaporation, cooling, standing and settling in a settling tank, and removing sediment to obtain liquid 1;
(4) Secondary concentration: concentrating the liquid 1 in vacuum until the solid content is 50-60%, then carrying out flash evaporation, cooling, standing and settling in a settling tank, and removing sediment to obtain liquid 2;
(5) Mixing the material 3 and the liquid 2 by a double-roll spiral mixer to obtain a material 4 with the moisture content of 20-40%;
(6) And drying the material 4 by using a tube bundle dryer, and then crushing to obtain the corn steep liquor dry powder.
Further, in the step (1), the mass ratio of the plant ash to the water is 1:2-5, wherein the mass of the plant ash is the mass of the plant ash dry basis. The soaking solution of plant ash is selected to regulate pH, the sulfurous acid in the solution is neutralized, the harm of the sulfurous acid to organisms is reduced, the plant ash contains various elements such as potassium, phosphorus and the like, the plant ash has the function of protecting crops, and the plant ash can also remove aflatoxin and corn toxin in corn steep liquor. And the plant ash is a product obtained by burning biomass, and is used for waste utilization and environment protection.
Further, in the step (2), the pH value of the corn soaking water is regulated to 4.0-5.0 by using filtrate 1, the corn soaking water is heated to 80-85 ℃, the temperature is kept for 15-30 minutes, the temperature is slowly reduced to 25-30 ℃, the corn soaking water is kept stand for 2-4 hours, then a plate frame is used for filtering to obtain a material 2 and filtrate 2, the material 2 and wet corn protein powder are mixed and then dried by using a tube bundle dryer, and the dried material is crushed to 40-60 meshes to obtain a material 3. The purpose of adjusting the pH value and increasing the temperature is to reduce the viscosity of the corn steep liquor, facilitate filtration, denature and precipitate macromolecular proteins, generate sediment, and remove the sediment through filtration. The material 3 has moderate powder granularity, the powder is too fine, the subsequent operation is not facilitated, the powder is too coarse, the liquid usage amount is reduced, and the productivity exertion is affected.
Further, in the step (2), the mass ratio of the material 2 to the wet corn gluten meal is 1:2-4. The filter residue has high viscosity, is not easy to dry, has small quantity, can reduce the viscosity by adding the protein powder, is easy to dry, and can increase the yield.
Further, in the step (2), the moisture content of the material 3 is less than 10%. The low moisture content is beneficial to adding more liquid materials in the step (5).
Further, the standing sedimentation time in the steps (3) and (4) is 4-10h. The precipitate and the precipitated salt crystals were removed by sedimentation.
Further, in the step (5), the mass ratio of the material 3 to the liquid 2 is 1.5-3:1. The liquid is adsorbed by the dried powder to form fine granular materials, so that the drying is convenient, and the problem that the materials cannot be dried due to high viscosity is avoided. Simultaneously, protein powder with low hygroscopicity and macromolecular proteins are adopted to embed substances with high hygroscopicity such as amino acid small molecular peptide substances and the like, so that the hygroscopicity is reduced.
Further, in the step (6), the pulverized particle size is 40 mesh.
Further, in step (6), the moisture content of the corn steep liquor dry powder is less than 10%. The water content is high, the caking or deterioration is easy, the product quality is affected, and the quality guarantee period of the product is shortened.
Compared with the prior art, the invention has the beneficial effects that:
1. the ash content of the corn steep liquor dry powder obtained by the method is less than or equal to 14%, and the protein content is more than or equal to 55%. Compared with the corn steep liquor dry powder obtained by spray drying, the corn steep liquor dry powder has the advantages of obviously reduced hygroscopicity, increased protein content, reduced salt content, improved overall quality, increased usage amount of corn steep liquor and widened application field of corn steep liquor.
2. In the process of drying corn steep liquor, the method changes the drying process method, utilizes the dried powder to adsorb liquid to form granular materials, reduces the viscosity of the materials, can use a tube bundle dryer for drying, is continuous in production, reduces energy consumption, solves the problems of high viscosity and difficult drying of the corn steep liquor, is beneficial to reducing the cost, and fully utilizes each component of the corn steep liquor.
3. According to the method, the protein powder with low hygroscopicity and macromolecular proteins are adopted to embed the substances with high hygroscopicity such as amino acid small molecular peptide substances, so that the hygroscopicity of the corn steep liquor dry powder can be reduced, the storage of the Yu Yu rice steep liquor dry powder is facilitated, and the shelf life of the corn steep liquor dry powder is prolonged.
4. The invention adopts the plant ash soaking solution to adjust the pH value, so that the harm of sulfurous acid to organisms can be reduced. The plant ash contains various elements such as potassium, phosphorus and the like, has the function of protecting crops, and can remove aflatoxin and corn toxin in corn steep liquor. And the plant ash is a product obtained by burning biomass, and is used for waste utilization and environment protection.
Detailed Description
Example 1
A corn steep liquor drying method, comprising the steps of:
(1) 1 part of plant ash is dissolved by 2.5 parts of water according to mass, soaked for 3 hours, and filtered by a plate frame to obtain a material 1 and a filtrate 1;
(2) Adjusting pH of corn soaking water to 4.6 by using filtrate 1, heating to 83 ℃, carrying out heat preservation treatment for 20 minutes, slowly cooling to 25 ℃, standing for 2 hours, filtering by using a plate frame to obtain a material 2 and filtrate 2, mixing the material 2 and wet corn protein powder according to a mass ratio of 1:2, drying by using a tube bundle dryer, and crushing and passing through 35 meshes after drying to obtain a material 3;
(3) First-stage concentration: concentrating the filtrate 2 in vacuum until the solid content is 40%, then carrying out flash evaporation, cooling, and then carrying out standing sedimentation in a sedimentation tank to remove sediment to obtain liquid 1;
(4) Secondary concentration: concentrating the liquid 1 in vacuum until the solid content is 55%, then carrying out flash evaporation, cooling, and then carrying out standing sedimentation in a sedimentation tank to remove sediment to obtain liquid 2;
(5) Mixing the material 3 and the liquid 2 by a double-roll spiral mixer according to the mass ratio of 2:1 to obtain a material 4 with the moisture content of 36%;
(6) And drying the material 4 by using a tube bundle dryer, and then crushing to obtain the corn steep liquor dry powder.
Example 2
A corn steep liquor drying method, comprising the steps of:
(1) According to mass, 1 part of plant ash is dissolved by 2 parts of water, soaked for 3 hours, and filtered by a plate frame to obtain a material 1 and a filtrate 1;
(2) Adjusting pH of corn soaking water to 4.0 by using filtrate 1, heating to 80 ℃, carrying out heat preservation treatment for 30 minutes, slowly cooling to 25 ℃, standing for 4 hours, filtering by using a plate frame to obtain a material 2 and filtrate 2, mixing the material 2 and wet corn protein powder according to a mass ratio of 1:3, drying by using a tube bundle dryer, and crushing and passing through 65 meshes after drying to obtain a material 3;
(3) First-stage concentration: concentrating the filtrate 2 in vacuum until the solid content is 30%, then carrying out flash evaporation, cooling, and then carrying out standing sedimentation in a sedimentation tank to remove sediment to obtain liquid 1;
(4) Secondary concentration: concentrating the liquid 1 in vacuum until the solid content is 60%, then carrying out flash evaporation, cooling, and then carrying out standing sedimentation in a sedimentation tank to remove sediment to obtain liquid 2;
(5) Mixing the material 3 and the liquid 2 by a double-roll spiral mixer according to the mass ratio of 1.5:1 to obtain a material 4 with the moisture content of 30%;
(6) And drying the material 4 by using a tube bundle dryer, and then crushing to obtain the corn steep liquor dry powder.
Example 3
A corn steep liquor drying method, comprising the steps of:
(1) According to mass, 1 part of plant ash is dissolved by 5 parts of water, soaked for 3 hours, and filtered by a plate frame to obtain a material 1 and a filtrate 1;
(2) Regulating the pH of corn soaking water to 5.0 by using filtrate 1, heating to 90 ℃, carrying out heat preservation treatment for 15 minutes, slowly cooling to 30 ℃, standing for 3 hours, filtering by using a plate frame to obtain a material 2 and filtrate 2, mixing the material 2 and wet corn protein powder according to a mass ratio of 1:4, drying by using a tube bundle dryer, and crushing and sieving by 40 meshes after drying to obtain a material 3;
(3) First-stage concentration: concentrating the filtrate 2 in vacuum until the solid content is 50%, then carrying out flash evaporation, cooling, and then carrying out standing sedimentation in a sedimentation tank to remove sediment to obtain liquid 1;
(4) Secondary concentration: concentrating the liquid 1 in vacuum until the solid content is 50%, then carrying out flash evaporation, cooling, and then carrying out standing sedimentation in a sedimentation tank to remove sediment to obtain liquid 2;
(5) Mixing the material 3 and the liquid 2 by a double-roll spiral mixer according to the mass ratio of 4:1 to obtain a material 4 with the water content of 28%;
(6) And drying the material 4 by using a tube bundle dryer, and then crushing to obtain the corn steep liquor dry powder.
Example 4
A corn steep liquor drying method, comprising the steps of:
(1) According to mass, 1 part of plant ash is dissolved by 3 parts of water, soaked for 3 hours, and filtered by a plate frame to obtain a material 1 and a filtrate 1;
(2) Adjusting pH of corn soaking water to 4.5 with filtrate 1, heating to 83 ℃, carrying out heat preservation treatment for 20 minutes, slowly cooling to 25 ℃, standing for 3 hours, filtering with a plate frame to obtain a material 2 and filtrate 2, mixing the material 2 and wet corn protein powder according to a mass ratio of 1:2, drying with a tube bundle dryer, and crushing and passing through 55 meshes after drying to obtain a material 3;
(3) First-stage concentration: concentrating the filtrate 2 in vacuum until the solid content is 40%, then carrying out flash evaporation, cooling, and then carrying out standing sedimentation in a sedimentation tank to remove sediment to obtain liquid 1;
(4) Secondary concentration: concentrating the liquid 1 in vacuum until the solid content is 55%, then carrying out flash evaporation, cooling, and then carrying out standing sedimentation in a sedimentation tank to remove sediment to obtain liquid 2;
(5) Mixing the material 3 and the liquid 2 by a double-roll spiral mixer according to the mass ratio of 2:1 to obtain a material 4 with the water content of 32%;
(6) And drying the material 4 by using a tube bundle dryer, and then crushing to obtain the corn steep liquor dry powder.
Example 5
A method for drying corn steep liquor, comprising the steps of:
(1) According to mass, 1 part of plant ash is dissolved by 3 parts of water, soaked for 3.5 hours, and filtered by a plate frame to obtain a material 1 and a filtrate 1;
(2) Adjusting pH of corn soaking water to 4.5 with filtrate 1, heating to 85 ℃, preserving heat for 25 minutes, slowly cooling to 25 ℃, standing for 3 hours, filtering with a plate frame to obtain a material 2 and filtrate 2, mixing the material 2 and wet corn protein powder according to a mass ratio of 1:2, drying with a tube bundle dryer, and crushing and sieving with 45 meshes after drying to obtain a material 3;
(3) First-stage concentration: concentrating the filtrate 2 in vacuum until the solid content is 35%, then carrying out flash evaporation, cooling, and then carrying out standing sedimentation in a sedimentation tank to remove sediment to obtain liquid 1;
(4) Secondary concentration: concentrating the liquid 1 in vacuum until the solid content is 55%, then carrying out flash evaporation, cooling, and then carrying out standing sedimentation in a sedimentation tank to remove sediment to obtain liquid 2;
(5) Mixing the material 3 and the liquid 2 by a double-roll spiral mixer according to the mass ratio of 2:1 to obtain a material 4 with the water content of 30%;
(6) And drying the material 4 by using a tube bundle dryer, and then crushing to obtain the corn steep liquor dry powder.
Example 6
A method for drying corn steep liquor, comprising the steps of:
(1) According to mass, 1 part of plant ash is dissolved by 4 parts of water, soaked for 3 hours, and filtered by a plate frame to obtain a material 1 and a filtrate 1;
(2) Adjusting pH of corn soaking water to 4.5 with filtrate 1, heating to 90 ℃, preserving heat for 25 minutes, slowly cooling to 25 ℃, standing for 4 hours, filtering with a plate frame to obtain a material 2 and filtrate 2, mixing the material 2 and wet corn protein powder according to a mass ratio of 1:3, drying with a tube bundle dryer, and crushing and passing through 50 meshes after drying to obtain a material 3;
(3) First-stage concentration: concentrating the filtrate 2 in vacuum until the solid content is 45%, then carrying out flash evaporation, cooling, and then carrying out standing sedimentation in a sedimentation tank to remove sediment to obtain liquid 1;
(4) Secondary concentration: concentrating the liquid 1 in vacuum until the solid content is 55%, then carrying out flash evaporation, cooling, and then carrying out standing sedimentation in a sedimentation tank to remove sediment to obtain liquid 2;
(5) Mixing the material 3 and the liquid 2 by a double-roll spiral mixer according to the mass ratio of 2:1 to obtain a material 4 with the water content of 20-40%;
(6) And drying the material 4 by using a tube bundle dryer, and then crushing to obtain the corn steep liquor dry powder.
Experimental example 1
The moisture content, protein content, ash content of the corn steep liquor dry powders of examples 1-6 and the commercially available corn steep liquor dry powders, respectively, were measured, and the measurement results are shown in Table 1.
TABLE 1 moisture content, protein content, ash content of corn steep liquor dry powder
As can be seen from Table 1, the moisture content of the corn steep liquor dry powders of examples 1-6 was 9.5%, 9.3%, 9.0%, 9.3%, 9.7% and 9.8%, respectively, the protein content was 56.2%, 55.7%, 56.0%, 55.8%, 57.0% and 56.4%, respectively, the ash content was 13.5%, 13.7%, 13.5%, 14.0%, 13.8% and 13.0%, respectively, the moisture content of the commercially available corn steep liquor dry powders was 9.9%, the protein content was 43.8%, and the ash content was 19.0%, respectively, and it was found that the corn steep liquor dry powders prepared by the method of the present invention had a high protein content and a low ash content.
The ash content of the corn steep liquor dry powder obtained by the method is less than or equal to 14%, and the protein content is more than or equal to 55%, which indicates that the corn steep liquor dry powder prepared by the method has the advantages of low moisture content, high protein content, low salt content and improved overall quality, can increase the usage amount of corn steep liquor and corn dry powder, and widens the application fields of corn steep liquor and corn dry powder.
Claims (9)
1. A corn steep liquor drying method is characterized in that: the method comprises the following steps:
(1) Dissolving plant ash in water, soaking for 2-5h, and filtering with a plate frame to obtain a material 1 and a filtrate 1;
(2) Adjusting pH of the corn soaking water to 4.0-5.0 with filtrate 1, heating to 80-90 ℃, carrying out heat preservation treatment for 15-30 minutes, slowly cooling to 25-30 ℃, standing for 2-4 hours, filtering with a plate frame to obtain a material 2 and filtrate 2, mixing the material 2 with wet corn protein powder, drying with a tube bundle dryer, and crushing to 35-65 meshes after drying to obtain a material 3;
(3) First-stage concentration: concentrating the filtrate 2 in vacuum until the solid content is 30-50%, then carrying out flash evaporation, cooling, standing and settling in a settling tank, and removing sediment to obtain liquid 1;
(4) Secondary concentration: concentrating the liquid 1 in vacuum until the solid content is 50-60%, then carrying out flash evaporation, cooling, standing and settling in a settling tank, and removing sediment to obtain liquid 2;
(5) Mixing the material 3 and the liquid 2 by a double-roll spiral mixer to obtain a material 4 with the moisture content of 20-40%;
(6) And drying the material 4 by using a tube bundle dryer, and then crushing to obtain the corn steep liquor dry powder.
2. The method for drying corn steep liquor according to claim 1, wherein: in the step (1), the mass ratio of the plant ash to the water is 1:2-5, wherein the mass of the plant ash is the mass of the plant ash dry basis.
3. The method for drying corn steep liquor according to claim 1, wherein: and (2) regulating the pH value of the corn soaking water to 4.0-5.0 by using filtrate 1, heating to 80-85 ℃, carrying out heat preservation treatment for 15-30 minutes, slowly cooling to 25-30 ℃, standing for 2-4 hours, filtering by using a plate frame to obtain a material 2 and filtrate 2, mixing the material 2 and wet corn protein powder, drying by using a tube bundle dryer, and crushing to 40-60 meshes after drying to obtain a material 3.
4. A method of drying corn steep liquor according to any of claims 1-3, wherein: in the step (2), the mass ratio of the material 2 to the wet corn gluten meal is 1:2-4.
5. The method for drying corn steep liquor of claim 4, wherein: in step (2), the moisture content of the material 3 is less than 10%.
6. The method for drying corn steep liquor according to claim 1, wherein: the standing sedimentation time in the steps (3) and (4) is 4-10h.
7. The method for drying corn steep liquor according to claim 1 or 5, wherein: in the step (5), the mass ratio of the material 3 to the liquid 2 is 1.5-3:1.
8. The method for drying corn steep liquor according to claim 1, wherein: in the step (6), the crushed particle size is 40 meshes.
9. The method for drying corn steep liquor according to any of claims 1-3 or 5-6, wherein: in step (6), the moisture content of the corn steep liquor dry powder is less than 10%.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1133747A (en) * | 1981-01-02 | 1982-10-19 | Ogilvie Mills Ltd. | Animal feed supplement |
| US4486451A (en) * | 1981-01-02 | 1984-12-04 | Ogilvie Mills Ltd. | Animal feed supplement |
| US4859485A (en) * | 1981-01-02 | 1989-08-22 | John Labatt Limited | Animal feed supplement prepared from wet corn bran and corn steep liquor |
| CN102952195A (en) * | 2011-08-22 | 2013-03-06 | 五寨县润泽粉业有限责任公司 | Technology for producing corn starch and protein powder |
| CN109170220A (en) * | 2018-11-06 | 2019-01-11 | 赵琪 | A kind of curing method of corn pulp |
| CN110241165A (en) * | 2019-07-03 | 2019-09-17 | 齐鲁工业大学 | A method of luteole is extracted from corn protein powder enzymatic hydrolysis jelly |
| CN112827198A (en) * | 2021-02-21 | 2021-05-25 | 徐浩 | Production method for belt type vacuum liquid continuous drying corn steep liquor dry powder |
-
2023
- 2023-11-30 CN CN202311625046.8A patent/CN117430726B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1133747A (en) * | 1981-01-02 | 1982-10-19 | Ogilvie Mills Ltd. | Animal feed supplement |
| US4486451A (en) * | 1981-01-02 | 1984-12-04 | Ogilvie Mills Ltd. | Animal feed supplement |
| US4859485A (en) * | 1981-01-02 | 1989-08-22 | John Labatt Limited | Animal feed supplement prepared from wet corn bran and corn steep liquor |
| CN102952195A (en) * | 2011-08-22 | 2013-03-06 | 五寨县润泽粉业有限责任公司 | Technology for producing corn starch and protein powder |
| CN109170220A (en) * | 2018-11-06 | 2019-01-11 | 赵琪 | A kind of curing method of corn pulp |
| CN110241165A (en) * | 2019-07-03 | 2019-09-17 | 齐鲁工业大学 | A method of luteole is extracted from corn protein powder enzymatic hydrolysis jelly |
| CN112827198A (en) * | 2021-02-21 | 2021-05-25 | 徐浩 | Production method for belt type vacuum liquid continuous drying corn steep liquor dry powder |
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