CN117546937A - Refining method of high-hydration rice protein powder - Google Patents
Refining method of high-hydration rice protein powder Download PDFInfo
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- CN117546937A CN117546937A CN202311811191.5A CN202311811191A CN117546937A CN 117546937 A CN117546937 A CN 117546937A CN 202311811191 A CN202311811191 A CN 202311811191A CN 117546937 A CN117546937 A CN 117546937A
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- protein
- rice
- hydration
- protein powder
- sugar
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- 102000004169 proteins and genes Human genes 0.000 title claims abstract description 70
- 108090000623 proteins and genes Proteins 0.000 title claims abstract description 70
- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 52
- 235000009566 rice Nutrition 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000000843 powder Substances 0.000 title claims abstract description 31
- 238000006703 hydration reaction Methods 0.000 title claims abstract description 18
- 238000007670 refining Methods 0.000 title claims abstract description 18
- 240000007594 Oryza sativa Species 0.000 title 1
- 241000209094 Oryza Species 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 102000004190 Enzymes Human genes 0.000 claims abstract description 16
- 108090000790 Enzymes Proteins 0.000 claims abstract description 16
- 230000001105 regulatory effect Effects 0.000 claims abstract description 12
- 238000007873 sieving Methods 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000004537 pulping Methods 0.000 claims abstract description 7
- 239000002002 slurry Substances 0.000 claims abstract description 7
- 239000004382 Amylase Substances 0.000 claims abstract description 6
- 102000013142 Amylases Human genes 0.000 claims abstract description 6
- 108010065511 Amylases Proteins 0.000 claims abstract description 6
- 235000019418 amylase Nutrition 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000000084 colloidal system Substances 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 230000007935 neutral effect Effects 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 16
- 239000002893 slag Substances 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 238000001694 spray drying Methods 0.000 claims description 8
- 238000000265 homogenisation Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 5
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 4
- 238000000498 ball milling Methods 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 230000005012 migration Effects 0.000 claims description 4
- 238000013508 migration Methods 0.000 claims description 4
- 239000012460 protein solution Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- 235000013339 cereals Nutrition 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 2
- 239000012670 alkaline solution Substances 0.000 claims 1
- -1 na2CO3 Chemical compound 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 3
- 235000016709 nutrition Nutrition 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 235000018102 proteins Nutrition 0.000 description 51
- 239000000243 solution Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 230000002209 hydrophobic effect Effects 0.000 description 4
- 238000003916 acid precipitation Methods 0.000 description 3
- 230000010933 acylation Effects 0.000 description 3
- 238000005917 acylation reaction Methods 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000004925 denaturation Methods 0.000 description 3
- 230000036425 denaturation Effects 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 230000013595 glycosylation Effects 0.000 description 3
- 238000006206 glycosylation reaction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 235000004252 protein component Nutrition 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 108010082495 Dietary Plant Proteins Proteins 0.000 description 1
- 102000006395 Globulins Human genes 0.000 description 1
- 108010044091 Globulins Proteins 0.000 description 1
- 108010068370 Glutens Proteins 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000021312 gluten Nutrition 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000000050 nutritive effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23J—PROTEIN COMPOSITIONS FOR FOODSTUFFS; WORKING-UP PROTEINS FOR FOODSTUFFS; PHOSPHATIDE COMPOSITIONS FOR FOODSTUFFS
- A23J1/00—Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites
- A23J1/12—Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from cereals, wheat, bran, or molasses
- A23J1/125—Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from cereals, wheat, bran, or molasses by treatment involving enzymes or microorganisms
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23J—PROTEIN COMPOSITIONS FOR FOODSTUFFS; WORKING-UP PROTEINS FOR FOODSTUFFS; PHOSPHATIDE COMPOSITIONS FOR FOODSTUFFS
- A23J3/00—Working-up of proteins for foodstuffs
- A23J3/14—Vegetable proteins
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Microbiology (AREA)
- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- Peptides Or Proteins (AREA)
Abstract
The invention provides a refining method of high-hydration rice protein powder. The method comprises the following steps: s1: pretreating sugar-making rice residue, namely adding water into the sugar-making rice residue as a raw material for pulping, and sieving with a 60-mesh sieve to remove impurities after colloid mill treatment; s2: enzyme removing sugar, regulating the pH value of the rice residue slurry in the step S1 to 7.0+/-0.5, and adding 0.2% of neutral amylase and 0.2% of saccharifying enzyme; regulating the temperature of the materials to 50+/-5 ℃, carrying out enzymolysis for 2-3 hours under the stirring condition, and then heating to 80+/-5 ℃ to inactivate enzymes for 30min. According to the refining method of the high-hydration rice protein powder, provided by the invention, the physical and chemical technical means are combined, so that the processing technology is improved to improve the solubility of the rice protein, not only can the addition of external components be avoided, the nutritional value of the rice protein be maintained, but also the processing cost can be reduced, and the taste of the rice protein powder can be improved.
Description
Technical Field
The invention relates to the field of rice protein powder, in particular to a refining method of high-hydration rice protein powder.
Background
The rice contains about 75% of carbohydrate and about 7-8% of protein, and is a good raw material for sugar production. The main protein components of the rice protein are gluten and globulin, and the main protein components account for more than 50% of the content of the rice residue after sugar production. The protein powder on the market is mainly sold in the form of crude animal feed protein, and the additional yield value is low. The rice residue is used as a raw material, and the edible raw material with the protein content more than 80% is further purified and produced by enzyme-released sugar, so that the utilization value and economic benefit of the rice residue can be effectively improved. However, the high temperature liquefaction and amylase enzymolysis processes adopted in the sugar manufacturing process lead to serious denaturation of the molecular structure of rice protein, generate irreversible aggregation and lead to extremely low solubility, which further limit the exertion of the functional characteristics and the application in different food systems.
At present, domestic enterprises mainly adopt means such as an enzyme method, an alkali-dissolution acid-precipitation method, glycosylation, acylation and the like to improve the solubility of the vegetable protein, but the enzyme method treatment can lead to poor taste of the product, the alkali-dissolution acid-precipitation method has higher production cost, and the safety of glycosylation and acylation treatment is to be questionable.
Therefore, there is a need to provide a refining method of high-hydration rice protein powder to solve the above technical problems.
Disclosure of Invention
The invention provides a refining method of high-hydration rice protein powder, which solves the problems that the product taste is poor due to enzyme treatment, the production cost of an alkali-dissolution acid precipitation method is high, and the safety of glycosylation and acylation treatment is to be questioned.
In order to solve the technical problems, the invention provides a refining method of high-hydration rice protein powder, which comprises the following steps:
s1: pretreating sugar-making rice residue, namely adding water into the sugar-making rice residue as a raw material for pulping, and sieving with a 60-mesh sieve to remove impurities after colloid mill treatment;
s2: enzyme removing sugar, regulating the pH value of the rice residue slurry in the step S1 to 7.0+/-0.5, and adding 0.2% of neutral amylase and 0.2% of saccharifying enzyme; regulating the temperature of the materials to 50+/-5 ℃, carrying out enzymolysis for 2-3 hours under the stirring condition, and then heating to 80+/-5 ℃ to inactivate enzymes for 30min;
s3: performing high-temperature extrusion filtering pretreatment, namely performing extrusion treatment on the feed liquid subjected to enzymolysis by adopting a plate-frame filter to perform solid-liquid separation, and washing the feed liquid with hot water at about 80 ℃ for 10min to sufficiently remove sugar;
s4: crushing and pulping, namely adding water into the protein wet slag obtained in the step S3 to adjust the weight of the protein wet slag to 15-25%, crushing the protein wet slag by using a crusher, and sieving the protein wet slag by using a vibrating screen with the size of about 100 meshes;
s5: pH migration treatment, namely regulating the pH of the protein slurry obtained in the step 4 to 10-11 by alkali liquor, preserving heat for 1h at 50 ℃ under stirring, and then regulating the pH to 7.0;
s6: homogenizing, namely homogenizing the protein solution with the pH value shifted by adopting a high-pressure homogenizer for two-stage homogenization (3000 psi/500 psi), and circulating for more than 2 times until the average grain size of the material is smaller than 10 mu m;
s7: spray drying, wherein the homogenized protein feed liquid is dried by spray drying, the air inlet temperature is 175-190 ℃, the air outlet temperature is 80-90 ℃, the protein content of the obtained dry powder is more than 80%, and the water content is lower than 5%;
s8: ball milling treatment, namely, ultrafine grinding the protein powder obtained by spray drying by adopting a ball mill to obtain an ultrafine protein powder product with the particle size of less than 600-800 meshes, wherein the solubility is more than 75%.
Preferably, the water content in the pulp mixing process in the step S1 is 15-25%.
Preferably, the alkali liquor for adjusting the pH in the step S2 is one or more of NaOH, na2CO3 or NaHCO3 with the concentration of 3 mol/L.
Preferably, the temperature of the hot water flushing in the step S3 is 75-90 ℃.
Preferably, the number of homogeneous repetitions in step S6 is 2-4.
Compared with the related art, the refining method of the high-hydration rice protein powder has the following beneficial effects:
the invention provides a refining method of high-hydration rice protein powder, which combines physical and chemical technical means to improve the processing technology to improve the solubility of the rice protein, not only can avoid adding external components and maintain the nutritional value of the rice protein, but also can reduce the processing cost and improve the taste of the rice protein powder.
The main reason of poor solubility of rice protein is that the denaturation and aggregation generated in the high-temperature sugar-making process of protein molecules are used, and the formation of disulfide bonds and hydrophobic bonds is a main factor for forming polymers from the molecular point of view, so that the method has the advantages that the pH migration expands the internal structure of the protein molecules, exposes hydrophilic groups, and combines two sections of homogenization processing means to cut off the disulfide bonds and the hydrophobic bonds, thereby effectively improving the solubility and the functional characteristics of rice protein powder.
Drawings
Fig. 1 is a schematic flow chart of a refining method of high-hydration rice protein powder.
Detailed Description
The invention will be further described with reference to the drawings and embodiments.
Referring to fig. 1 in combination, fig. 1 is a schematic flow chart of a refining method of high-hydration rice protein powder according to the present invention.
First embodiment:
s1: adding water into sugar-making rice residue, pulping to 15wt%, colloid milling, and sieving with 60 mesh sieve to remove impurities.
S2: after the pH value of the 15% sugar-making rice residue solution is adjusted to 6.5 by adopting a 3mol/L NaOH solution, 0.2% neutral amylase and 0.2% saccharifying enzyme are added. And regulating the temperature of the materials to 50 ℃, carrying out enzymolysis for 2.5 hours under the stirring condition, and then heating to 85 ℃ to inactivate enzymes for 30min.
S3: and (3) extruding the enzymolysis feed liquid by adopting a plate-frame filter to perform solid-liquid separation, and washing the enzymolysis feed liquid by using hot water at 80 ℃ for 10min to sufficiently remove sugar.
S4: and (3) adding water into the protein wet slag obtained in the step (S3) to adjust the weight of the protein wet slag to 20%, crushing the protein wet slag by a crusher, and sieving the protein wet slag by a 100-mesh vibrating screen.
S5: the protein slurry obtained in step 4 was adjusted to pH 10 with 3mol/L NaOH solution, incubated at 50℃for 1h with stirring, and then adjusted to pH 7.0.
S6: the pH-migrated protein solution was subjected to two-stage homogenization (3000 psi/500 psi) using a high-pressure homogenizer, and circulated 2 times.
S7: and drying the homogenized protein feed liquid by spray drying, wherein the air inlet temperature is 175 ℃ and the air outlet temperature is 85 ℃.
S8: ball milling, crushing and packaging.
Second embodiment:
s1: adding water into sugar-making rice residue, pulping to concentration of 20wt%, colloid milling, and sieving with 60 mesh sieve to remove impurities.
S2: after the pH value of the 15% sugar-making rice residue solution is adjusted to 7.0 by adopting a 3mol/L Na2CO3 solution, 0.2% neutral amylase and 0.2% saccharifying enzyme are added. And regulating the temperature of the materials to 50 ℃, carrying out enzymolysis for 3 hours under the stirring condition, and then heating to 80 ℃ to inactivate enzymes for 30min.
S3: and (3) extruding the enzymolysis feed liquid by adopting a plate-frame filter to perform solid-liquid separation, and washing the enzymolysis feed liquid by using hot water at 90 ℃ for 10min to sufficiently remove sugar.
S4: and (3) adding water into the protein wet slag obtained in the step (S3) to adjust the weight of the protein wet slag to 18%, crushing the protein wet slag by a crusher, and sieving the protein wet slag by a 120-mesh vibrating screen.
S5: the protein slurry obtained in step 4 was adjusted to pH 11 with 3mol/L Na2CO3 solution, incubated at 50℃for 1h with stirring, and then adjusted to pH 7.0.
S6: the pH-migrated protein solution was subjected to two-stage homogenization (3000 psi/500 psi) using a high-pressure homogenizer, and circulated 4 times.
S7: and drying the homogenized protein feed liquid by spray drying, wherein the air inlet temperature is 180 ℃, and the air outlet temperature is 80 ℃.
S8: ball milling, crushing and packaging.
Moisture content and solubility test results for different rice protein samples:
| moisture content (%) | Solubility (%) | |
| Example 1 | 4.6±0.1 | 89±2 |
| Example 2 | 4.2±0.1 | 92±3 |
Compared with the related art, the refining method of the high-hydration rice protein powder has the following beneficial effects:
by combining with physicochemical technical means, the processing technology is improved to improve the solubility of the rice protein, not only can avoid adding external components and maintain the nutritive value of the rice protein, but also can reduce the processing cost and improve the taste of the rice protein powder.
The main reason of poor solubility of rice protein is that the denaturation and aggregation generated in the high-temperature sugar-making process of protein molecules are used, and the formation of disulfide bonds and hydrophobic bonds is a main factor for forming polymers from the molecular point of view, so that the method has the advantages that the pH migration expands the internal structure of the protein molecules, exposes hydrophilic groups, and combines two sections of homogenization processing means to cut off the disulfide bonds and the hydrophobic bonds, thereby effectively improving the solubility and the functional characteristics of rice protein powder.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (5)
1. The refining method of the high-hydration rice protein powder is characterized by comprising the following steps of:
s1: pretreating sugar-making rice residue, namely adding water into the sugar-making rice residue as a raw material for pulping, and sieving with a 60-mesh sieve to remove impurities after colloid mill treatment;
s2: enzyme removing sugar, regulating the pH value of the rice residue slurry in the step S1 to 7.0+/-0.5, and adding 0.2% of neutral amylase and 0.2% of saccharifying enzyme; regulating the temperature of the materials to 50+/-5 ℃, carrying out enzymolysis for 2-3 hours under the stirring condition, and then heating to 80+/-5 ℃ to inactivate enzymes for 30min;
s3: performing high-temperature extrusion filtering pretreatment, namely performing extrusion treatment on the feed liquid subjected to enzymolysis by adopting a plate-frame filter to perform solid-liquid separation, and washing the feed liquid with hot water at about 80 ℃ for 10min to sufficiently remove sugar;
s4: crushing and pulping, namely adding water into the protein wet slag obtained in the step S3 to adjust the weight of the protein wet slag to 15-25%, crushing the protein wet slag by using a crusher, and sieving the protein wet slag by using a vibrating screen with the size of about 100 meshes;
s5: pH migration treatment, namely regulating the pH of the protein slurry obtained in the step 4 to 10-11 by alkali liquor, preserving heat for 1h at 50 ℃ under stirring, and then regulating the pH to 7.0;
s6: homogenizing, namely homogenizing the protein solution with the pH value shifted by adopting a high-pressure homogenizer for two-stage homogenization (3000 psi/500 psi), and circulating for more than 2 times until the average grain size of the material is smaller than 10 mu m;
s7: spray drying, wherein the homogenized protein feed liquid is dried by spray drying, the air inlet temperature is 175-190 ℃, the air outlet temperature is 80-90 ℃, the protein content of the obtained dry powder is more than 80%, and the water content is lower than 5%;
s8: ball milling treatment, namely, ultrafine grinding the protein powder obtained by spray drying by adopting a ball mill to obtain an ultrafine protein powder product with the particle size of less than 600-800 meshes, wherein the solubility is more than 75%.
2. The method for refining high-hydration rice protein powder according to claim 1, wherein said step S1 is performed with a water content of 15-25% in said size mixing process.
3. The method for refining high-hydration rice protein powder according to claim 2, wherein said alkaline solution for adjusting pH in said step S2 is one or more of NaOH, na2CO3, or NaHCO3 in an amount of 3 mol/L.
4. The method for refining high-hydration rice protein powder according to claim 1, wherein said hot water washing in said step S3 has a temperature of 75-90 ℃.
5. The method for refining high-hydration rice protein powder according to claim 1, wherein said homogenizing cycle in said step S6 is 2-4 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311811191.5A CN117546937A (en) | 2023-12-27 | 2023-12-27 | Refining method of high-hydration rice protein powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311811191.5A CN117546937A (en) | 2023-12-27 | 2023-12-27 | Refining method of high-hydration rice protein powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117546937A true CN117546937A (en) | 2024-02-13 |
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ID=89814854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311811191.5A Pending CN117546937A (en) | 2023-12-27 | 2023-12-27 | Refining method of high-hydration rice protein powder |
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| Country | Link |
|---|---|
| CN (1) | CN117546937A (en) |
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2023
- 2023-12-27 CN CN202311811191.5A patent/CN117546937A/en active Pending
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