CN115606812A - Dietary fiber supplement and preparation method thereof - Google Patents
Dietary fiber supplement and preparation method thereof Download PDFInfo
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- CN115606812A CN115606812A CN202211076504.2A CN202211076504A CN115606812A CN 115606812 A CN115606812 A CN 115606812A CN 202211076504 A CN202211076504 A CN 202211076504A CN 115606812 A CN115606812 A CN 115606812A
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- 235000013325 dietary fiber Nutrition 0.000 title claims abstract description 126
- 239000013589 supplement Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 60
- 239000002994 raw material Substances 0.000 claims abstract description 21
- 239000000835 fiber Substances 0.000 claims abstract description 20
- 239000002245 particle Substances 0.000 claims abstract description 17
- 229940038580 oat bran Drugs 0.000 claims abstract description 15
- 238000004880 explosion Methods 0.000 claims abstract description 14
- FYGDTMLNYKFZSV-URKRLVJHSA-N (2s,3r,4s,5s,6r)-2-[(2r,4r,5r,6s)-4,5-dihydroxy-2-(hydroxymethyl)-6-[(2r,4r,5r,6s)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1[C@@H](CO)O[C@@H](OC2[C@H](O[C@H](O)[C@H](O)[C@H]2O)CO)[C@H](O)[C@H]1O FYGDTMLNYKFZSV-URKRLVJHSA-N 0.000 claims abstract description 12
- 229920002498 Beta-glucan Polymers 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 29
- 108090000790 Enzymes Proteins 0.000 claims description 26
- 102000004190 Enzymes Human genes 0.000 claims description 26
- 229940088598 enzyme Drugs 0.000 claims description 26
- 235000013312 flour Nutrition 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 238000001694 spray drying Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000010008 shearing Methods 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 108010059892 Cellulase Proteins 0.000 claims description 5
- 229940106157 cellulase Drugs 0.000 claims description 5
- 230000000415 inactivating effect Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 230000002255 enzymatic effect Effects 0.000 claims description 3
- 241000209140 Triticum Species 0.000 claims description 2
- 235000021307 Triticum Nutrition 0.000 claims description 2
- 240000008042 Zea mays Species 0.000 claims description 2
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 2
- 235000005822 corn Nutrition 0.000 claims description 2
- 235000019895 oat fiber Nutrition 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 3
- 239000012527 feed solution Substances 0.000 claims 1
- 239000000243 solution Substances 0.000 claims 1
- 239000002893 slag Substances 0.000 abstract description 7
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 12
- 235000013339 cereals Nutrition 0.000 description 4
- 235000019658 bitter taste Nutrition 0.000 description 3
- 238000005422 blasting Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000000796 flavoring agent Substances 0.000 description 3
- 235000019634 flavors Nutrition 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 102000004139 alpha-Amylases Human genes 0.000 description 2
- 108090000637 alpha-Amylases Proteins 0.000 description 2
- 229940024171 alpha-amylase Drugs 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 235000005911 diet Nutrition 0.000 description 2
- 230000000378 dietary effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 230000007935 neutral effect Effects 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 102000013142 Amylases Human genes 0.000 description 1
- 108010065511 Amylases Proteins 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229940111205 diastase Drugs 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 235000012055 fruits and vegetables Nutrition 0.000 description 1
- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
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- 235000019640 taste Nutrition 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
- A23L33/20—Reducing nutritive value; Dietetic products with reduced nutritive value
- A23L33/21—Addition of substantially indigestible substances, e.g. dietary fibres
- A23L33/22—Comminuted fibrous parts of plants, e.g. bagasse or pulp
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
- A23L29/06—Enzymes
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
- A23L33/20—Reducing nutritive value; Dietetic products with reduced nutritive value
- A23L33/21—Addition of substantially indigestible substances, e.g. dietary fibres
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L7/00—Cereal-derived products; Malt products; Preparation or treatment thereof
- A23L7/10—Cereal-derived products
- A23L7/104—Fermentation of farinaceous cereal or cereal material; Addition of enzymes or microorganisms
- A23L7/107—Addition or treatment with enzymes not combined with fermentation with microorganisms
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L7/00—Cereal-derived products; Malt products; Preparation or treatment thereof
- A23L7/10—Cereal-derived products
- A23L7/115—Cereal fibre products, e.g. bran, husk
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
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- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
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Abstract
The invention discloses a dietary fiber supplement and a preparation method thereof, wherein the dietary fiber supplement comprises the following raw materials in parts by weight: 1-20 parts of enzymolysis oat powder, 10-40 parts of oat bran powder, 20-60 parts of modified dietary fiber and 5-25 parts of beta-glucan. The dietary fiber supplement provided by the invention has the advantages that the total dietary fiber content is high (the total dietary fiber content is more than 50%), the proportion of the water-soluble dietary fiber and the non-water-soluble dietary fiber is reasonable, the fiber particle size is small, and the mouth feel is fine, smooth, without slag feeling and without roughness. According to the preparation method of the modified dietary fiber powder, the efficiency of reducing the fiber particle size is improved by coupling the steam explosion treatment with the high-pressure micro-jet treatment and the enzymolysis treatment, and the fiber particle size is reduced to the range without slag feeling and roughness; the content of water-soluble dietary fiber in the dietary fiber is effectively improved by combining steam explosion treatment, high-pressure micro-jet treatment and enzymolysis.
Description
Technical Field
The invention relates to the technical field of foods, in particular to a dietary fiber supplement and a preparation method thereof.
Background
Dietary fiber is a generic term for polysaccharide carbohydrate and lignin which are not digested by human body, and although it is difficult to be decomposed and absorbed in the digestive tract of human body, it is a seventh nutrient essential for human health. Dietary fiber can be classified into water-Soluble Dietary Fiber (SDF) and water-Insoluble Dietary Fiber (IDF) according to its solubility in water.
Coarse grain and fruits and vegetables are used as the substrate of the dietary pyramid and are very important components in the dietary structure, and the coarse grain fiber has important health value; the main component of the coarse food grain fiber is water-insoluble dietary fiber, and the application of the coarse food grain fiber in the dietary fiber supplement is limited due to rough mouthfeel and light smell and taste.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the dietary fiber supplement, which has high total dietary fiber content (the total dietary fiber content is more than 50%), reasonable proportion of water-soluble dietary fiber and non-water-soluble dietary fiber, small fiber particle size, fine and smooth mouthfeel, no slag feeling and no roughness; in addition, the invention also provides a preparation method of the dietary fiber supplement.
The invention provides a dietary fiber supplement in a first aspect, which comprises the following raw materials in parts by weight: 1-20 parts of enzymolysis oat powder, 10-40 parts of oat bran powder, 20-60 parts of modified dietary fiber and 5-25 parts of beta-glucan.
In one embodiment of the present invention, the particle size of the oat bran powder is 100 to 200 mesh.
In a second aspect, the present invention provides a method for preparing the dietary fiber supplement, comprising the following steps: uniformly mixing the enzymolysis oat flour, the oat bran powder, the modified dietary fiber and the beta-glucan according to the formula ratio to obtain the dietary fiber supplement.
In one embodiment of the invention, the oat enzymolysis powder is prepared by the following steps:
mixing the oat flour and water according to the mass ratio of 1 (5-8), and uniformly stirring to obtain a raw material solution;
heating the raw material liquid to 50-75 ℃, adding a liquefying enzyme, and carrying out enzymolysis for 15-60 min to obtain a first intermediate liquid;
cooling the first intermediate feed liquid to 40-65 ℃, adding saccharifying enzyme, and carrying out enzymolysis for 45-120 min to obtain a second intermediate feed liquid;
carrying out heat treatment on the second intermediate feed liquid to inactivate enzyme to obtain enzymolysis oat slurry;
and (3) carrying out spray drying on the enzymolysis oat slurry to obtain enzymolysis oat powder.
The oat flour is subjected to enzymolysis through complex enzyme (liquefying enzyme and saccharifying enzyme), the obtained enzymolysis oat flour has enzymolysis flavor and sweetness, and in addition, the obtained enzymolysis oat flour has no bitter taste.
In an embodiment of the present invention, the amount of the added liquefying enzyme is 0.1% to 0.3% of the mass of the raw material liquid.
In an embodiment of the present invention, the amount of the saccharifying enzyme added is 0.05-0.15% of the mass of the first intermediate feed liquid.
In one embodiment of the present invention, the modified dietary fiber is prepared by the following steps:
after the dietary fiber powder is subjected to steam explosion treatment, adding water, shearing for 5-30 min at the rotating speed of 8000-16000 rpm, and carrying out high-pressure microjet treatment for 3-10 times to obtain an intermediate feed liquid;
adjusting the pH value of the intermediate feed liquid to 4.0, adding cellulase, carrying out enzymolysis at 30-60 ℃ for 30-150 min, raising the temperature of the obtained enzymolysis liquid to 90-100 ℃, inactivating the enzyme for 10-15 min, carrying out spray drying, wherein the air inlet temperature is 160-200 ℃, and the air outlet temperature is 80-105 ℃, thus obtaining the modified dietary fiber powder.
By coupling steam explosion treatment with high-pressure micro-jet treatment and enzymolysis treatment, the efficiency of reducing the fiber particle size is improved, and the fiber particle size is reduced to the range without slag feeling and rough feeling; the steam explosion treatment, the high-pressure micro-jet treatment and the enzymolysis are combined, so that the content of the water-soluble dietary fiber in the dietary fiber is effectively improved.
In one embodiment of the invention, the pressure of the steam explosion treatment is 0.2MPa to 2MPa, and the time is 60s to 600s;
the high-pressure micro-jet treatment process comprises the following steps: sequentially treating for 1-2 times under the pressure of 40-60 MPa, for 1-2 times under the pressure of 60-80 MPa and for 1-15 times under the pressure of 100-140 MPa to obtain intermediate feed liquid.
In one embodiment of the invention, the dietary fiber material comprises at least one of oat fiber, wheat fiber, corn fiber.
In one embodiment of the present invention, the particle size of the dietary fiber powder material is 60 mesh.
In one embodiment of the invention, the mass ratio of the water-soluble dietary fiber to the water-insoluble dietary fiber in the dietary fiber supplement is 1:1 to 2.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
1. the dietary fiber supplement provided by the embodiment of the invention has high total dietary fiber content (the total dietary fiber content is more than 50%), reasonable proportion of water-soluble dietary fiber and non-water-soluble dietary fiber, small fiber particle size, and fine and smooth mouthfeel, no slag feeling and no roughness.
2. The dietary fiber supplement provided by the embodiment of the invention comprises oat bran, and the oat bran powder not only can provide dietary fiber, but also contains starch with small granularity and beta-glucan, and can form a fine and silky mouthfeel similar to a fat state after being fully dissolved in water, so that the mouthfeel of a finished product is more fine and smooth.
3. In the preparation method of the oat enzymolysis powder provided by the embodiment of the invention, the oat powder is subjected to enzymolysis by the compound enzyme, and the obtained enzymolysis oat powder has enzymolysis flavor and certain sweetness; in addition, the obtained enzymolysis oat flour has no bitter taste through the processes of specific compound enzyme types, compound enzyme use ratio, enzymolysis time and the like.
4. In the preparation method of the modified dietary fiber powder provided by the embodiment of the invention, the efficiency of reducing the fiber particle size is improved by coupling the steam explosion treatment with the high-pressure microjet treatment and the enzymolysis treatment, and the fiber particle size is reduced to the range of no slag feeling and no roughness; the steam explosion treatment, the high-pressure micro-jet treatment and the enzymolysis are combined, so that the content of the water-soluble dietary fiber in the dietary fiber is effectively improved.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
The embodiment provides a dietary fiber supplement which is prepared from the following raw materials: 15wt% of enzymolysis oat powder, 38wt% of oat bran powder, 35wt% of modified dietary fiber and 12wt% of beta-glucan.
Wherein the water-soluble dietary fiber content in the raw material enzymolysis oat powder is 4.25wt%, and the water-insoluble dietary fiber content is 0.75wt%;
wherein, the water-soluble dietary fiber content in the raw material oat bran powder is 10.8wt%, and the water-insoluble dietary fiber content is 25.2wt%;
wherein the content of water-soluble dietary fiber and the content of water-insoluble dietary fiber in the raw material modified dietary fiber are respectively 30.36wt% and 61.64wt%;
wherein the raw material beta-glucan is water-soluble dietary fiber with the purity of 86%.
The dietary fiber supplement in this example was prepared by the following steps:
1) According to the proportion of 1:5, adding water into oat flour by mass ratio, stirring uniformly, heating to 65 ℃, adding neutral alpha-amylase, performing enzymolysis for 30min, cooling the feed liquid to 55 ℃, adding saccharifying enzyme, performing enzymolysis for 50min, heating the feed liquid to 90 ℃, maintaining for 10min for sterilization, and filtering to remove residues to obtain enzymolysis oat slurry; wherein, the oat powder is subjected to enzymolysis by saccharifying enzyme and liquefying enzyme, and the obtained enzymolysis oat powder has enzymolysis flavor and certain sweetness; in addition, the obtained enzymolyzed oat flour has no bitter taste by specifically selecting saccharifying enzyme and liquefying enzyme for enzymolysis and specifically selecting the proportion, the enzymolysis time and the enzymolysis temperature.
2) And (2) carrying out spray drying on the enzymolysis oat slurry obtained in the step 1), wherein the air inlet temperature is 180 ℃, and the air outlet temperature is 90 ℃, so as to obtain enzymolysis oat powder.
3) Blasting 60 mesh dietary fiber powder material at 0.6MPa for 120s, adding water, shearing at 12000rpm for 20min, and sequentially treating at 60MPa, 80MPa and 100MPa for 1 time, 1 time and 6 times.
4) Adjusting the pH value of the feed liquid treated in the step 3) to 5.0, adding cellulase, performing enzymolysis at 60 ℃ for 60min, raising the temperature of the feed liquid to 95 ℃, inactivating the enzyme for 10min, and performing spray drying, wherein the air inlet temperature is 180 ℃ and the air outlet temperature is 90 ℃ to obtain the modified dietary fiber powder.
5) Compounding the enzymolysis oat flour obtained in the step 1), the modified dietary fiber powder obtained in the step 4), oat bran powder and beta-glucan to obtain the dietary fiber supplement.
The dietary fiber supplement prepared in this example had a total dietary fiber content of 56.95wt%, a water-soluble dietary fiber content of 25.69wt%, and a water-insoluble dietary fiber content of 31.26wt%.
Example 2
The embodiment provides a dietary fiber supplement which is prepared from the following raw materials: 15wt% of enzymolysis oat powder, 38wt% of oat bran powder, 41wt% of modified dietary fiber and 6wt% of beta-glucan.
Wherein the water-soluble dietary fiber content in the raw material enzymolysis oat powder is 4.25wt%, and the water-insoluble dietary fiber content is 0.75wt%;
wherein, the water-soluble dietary fiber content in the raw material oat bran powder is 10.8wt%, and the water-insoluble dietary fiber content is 25.2wt%;
wherein the raw material modified dietary fiber contains 34wt% of water-soluble dietary fiber and 58wt% of water-insoluble dietary fiber;
wherein the raw material beta-glucan is water-soluble dietary fiber with the purity of 86%.
The dietary fiber supplement in this example was prepared by the following steps:
1) According to the material-liquid ratio of 1:6 adding water into oat flour, stirring, heating to 70 deg.C, adding neutral alpha-amylase, performing enzymolysis for 20min, cooling to 50 deg.C, adding diastase, performing enzymolysis for 70min, heating to 95 deg.C, maintaining for 10min, sterilizing, and filtering to remove residues to obtain enzymolysis oat pulp.
2) Carrying out spray drying on the enzymatic oat slurry obtained in the step 1), wherein the air inlet temperature is 175 ℃, and the air outlet temperature is 85 ℃, so as to obtain the enzymatic oat powder.
3) Blasting 60 mesh dietary fiber powder material under 0.5MPa for 100s, adding water, shearing at 10000rpm for 15min, and sequentially treating under 60MPa, 80MPa, and 120MPa for 1 time, and 5 times.
4) Adjusting the pH value of the feed liquid treated in the step 3) to 4.5, adding cellulase, performing enzymolysis at 50 ℃ for 80min, raising the temperature of the feed liquid to 95 ℃, inactivating the enzyme for 10min, and performing spray drying, wherein the air inlet temperature is 190 ℃ and the air outlet temperature is 90 ℃ to obtain the modified dietary fiber powder.
5) Compounding the enzymolysis oat flour obtained in the step 1), the modified dietary fiber powder obtained in the step 4), oat bran powder and beta-glucan to obtain the dietary fiber supplement.
The dietary fiber supplement prepared in this example had a total dietary fiber content of 57.31wt%, a water-soluble dietary fiber content of 23.84wt%, and a water-insoluble dietary fiber content of 33.47wt%.
Comparative example 1
The comparative example provides a preparation method of modified dietary fiber powder, which specifically comprises the following steps:
1) Adding water into 60 mesh dietary fiber powder, and shearing at 10000rpm for 15 min.
2) Adjusting the pH value of the feed liquid treated in the step 2) to 4.5, adding cellulase, carrying out enzymolysis at 50 ℃ for 80min, raising the temperature of the feed liquid to 95 ℃, inactivating the enzyme for 10min, and carrying out spray drying, wherein the air inlet temperature is 190 ℃ and the air outlet temperature is 90 ℃ to obtain the modified dietary fiber powder.
Compared with example 2, the modified dietary fiber powder preparation method of the comparative example does not include the steam explosion treatment and the high-pressure micro-jet treatment.
Comparative example 2
The comparative example provides a preparation method of modified dietary fiber powder, which specifically comprises the following steps: adding water into 60 mesh dietary fiber powder raw material, shearing at 10000rpm for 15min, and sequentially treating at 60MPa, 80Mpa and 120Mpa for 1 time, 1 time and 5 times to obtain modified dietary fiber powder.
Compared with example 2, the modified dietary fiber powder preparation method of the comparative example does not include steam explosion treatment and enzymolysis treatment.
Comparative example 3
The comparative example provides a preparation method of modified dietary fiber powder, which specifically comprises the following steps: blasting 60-mesh dietary fiber powder raw material under 0.5MPa pressure for 100s, adding water, and shearing at 10000rpm for 15min to obtain modified dietary fiber powder.
Compared with the example 2, the preparation method of the modified dietary fiber powder in the comparative example does not comprise high-pressure micro-jet treatment and enzymolysis treatment.
Test examples
In the test example, the content of the water-soluble fiber in the modified dietary fiber powder obtained in example 2, comparative example 1, comparative example 2 and comparative example 3 was detected by the method specified in GB/T5009.88-2014, and the particle size of the modified fiber was detected by a particle size analyzer.
As can be seen from the above table, in the preparation method of the modified dietary fiber powder provided by the invention, the efficiency of reducing the fiber particle size is improved by coupling the steam explosion treatment with the high-pressure microjet treatment and the enzymolysis treatment, and the fiber particle size is reduced to the range of no slag feeling and no roughness feeling; the content of the water-soluble dietary fiber in the modified dietary fiber powder is effectively improved by combining steam explosion treatment, high-pressure micro-jet treatment and enzymolysis.
The foregoing disclosure discloses only the preferred embodiments of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
In light of the above teachings, those skilled in the art will readily appreciate that the materials and their equivalents, the processes and their equivalents, as listed or exemplified herein, are capable of performing the invention in any of its several forms, and that the upper and lower limits of the parameters of the materials and processes, and the ranges of values between these limits are not specifically enumerated herein.
Claims (10)
1. The dietary fiber supplement is characterized by comprising the following raw materials in parts by weight: 1-20 parts of enzymolysis oat powder, 10-40 parts of oat bran powder, 20-60 parts of modified dietary fiber and 5-25 parts of beta-glucan.
2. A dietary fiber supplement according to claim 1, wherein said oat bran powder has a particle size of 100-200 mesh.
3. A process for the preparation of a dietary fibre supplement as claimed in any one of claims 1 to 2, comprising the steps of: uniformly mixing the enzymolysis oat flour, the oat bran powder, the modified dietary fiber and the beta-glucan according to the formula amount to obtain the dietary fiber supplement.
4. A method of making a dietary fiber supplement as defined in claim 3, wherein said enzymatic oat flour is prepared by the steps of:
mixing the oat flour and water according to the mass ratio of 1 (5-8), and uniformly stirring to obtain a raw material solution;
heating the raw material liquid to 50-75 ℃, adding a liquefying enzyme, and performing enzymolysis for 15-60 min to obtain a first intermediate liquid;
cooling the first intermediate feed liquid to 40-65 ℃, adding saccharifying enzyme, and carrying out enzymolysis for 45-120 min to obtain a second intermediate feed liquid;
carrying out heat treatment on the second intermediate feed liquid to inactivate enzyme so as to obtain enzymolysis oat slurry;
and carrying out spray drying on the enzymolysis oat slurry to obtain enzymolysis oat powder.
5. A process for the preparation of a dietary fiber supplement as claimed in claim 4, wherein said liquefying enzyme is added in an amount of 0.1% to 0.3% by mass of said feedstock.
6. A method of making a dietary fiber supplement as claimed in claim 4, wherein said saccharifying enzyme is added at a level of 0.05% to 0.15% by mass of said first intermediate feed solution.
7. A method of preparing a dietary fiber supplement according to claim 3, wherein said modified dietary fiber is prepared by the steps of:
after the dietary fiber powder is subjected to steam explosion treatment, adding water, shearing for 5-30 min at the rotating speed of 8000-16000 rpm, and carrying out high-pressure micro-jet treatment for 3-10 times to obtain intermediate feed liquid;
adjusting the pH value of the intermediate feed liquid to 4.0, adding cellulase, carrying out enzymolysis at 30-60 ℃ for 30-150 min, raising the temperature of the obtained enzymolysis liquid to 90-100 ℃, inactivating enzyme for 10-15 min, carrying out spray drying, wherein the air inlet temperature is 160-200 ℃, and the air outlet temperature is 80-105 ℃, thus obtaining the modified dietary fiber powder.
8. A process for the preparation of a dietary fiber supplement according to claim 7, wherein said steam explosion treatment is at a pressure of 0.2MPa to 2MPa for a period of 60s to 600s;
the high-pressure micro-jet treatment process comprises the following steps: sequentially treating for 1-2 times under the pressure of 40-60 MPa, for 1-2 times under the pressure of 60-80 MPa and for 1-15 times under the pressure of 100-140 MPa to obtain intermediate feed liquid.
9. A process for preparing a dietary fiber supplement as claimed in claim 7, wherein said dietary fiber powder material has a particle size of 60 mesh; the dietary fiber raw material comprises at least one of oat fiber, wheat fiber and corn fiber.
10. A method of preparing a dietary fiber supplement according to claim 3, wherein the mass ratio of water-soluble dietary fiber to water-insoluble dietary fiber in said dietary fiber supplement is 1: (1-2).
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