WO2022114059A1 - 卵白タンパク質の熱凝固ゲル強度調整剤 - Google Patents
卵白タンパク質の熱凝固ゲル強度調整剤 Download PDFInfo
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- WO2022114059A1 WO2022114059A1 PCT/JP2021/043190 JP2021043190W WO2022114059A1 WO 2022114059 A1 WO2022114059 A1 WO 2022114059A1 JP 2021043190 W JP2021043190 W JP 2021043190W WO 2022114059 A1 WO2022114059 A1 WO 2022114059A1
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- Prior art keywords
- egg white
- protein
- gel strength
- white protein
- heat coagulation
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Classifications
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
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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
- A23L15/00—Egg products; Preparation or treatment thereof
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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
- A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
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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
- A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
- A23L29/20—Foods or foodstuffs containing additives; Preparation or treatment thereof containing gelling or thickening agents
- A23L29/275—Foods or foodstuffs containing additives; Preparation or treatment thereof containing gelling or thickening agents of animal origin, e.g. chitin
- A23L29/281—Proteins, e.g. gelatin or collagen
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/14—Hydrolases (3)
- C12N9/78—Hydrolases (3) acting on carbon to nitrogen bonds other than peptide bonds (3.5)
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- C—CHEMISTRY; METALLURGY
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Definitions
- the present invention relates to a heat coagulation gel strength modifier for egg white protein.
- Egg white protein has the property of forming a gel network by heat coagulation, and this property is an important factor in determining the texture characteristics of foods cooked using egg white.
- Patent Document 1 shows that the structure of the obtained processed egg food can be densified by adding transglutaminase to a raw material mainly composed of eggs and then cooking and heating.
- Patent Document 2 shows that by immersing a processed egg food such as a boiled egg in a solution containing transglutaminase, hardness and elasticity can be imparted as compared with the case where the processed egg food is not treated with transglutaminase. ..
- an object of the present invention is to provide a technique capable of controlling to increase / decrease (increase or decrease) the thermal coagulation gel strength of egg white protein and having little influence on the taste.
- the present inventor unexpectedly expects that the protein deamidating enzyme (protein glutaminase) can exhibit both an effect of increasing and an effect of decreasing the heat coagulation gel strength of egg white protein depending on the amount of the protein deamidating enzyme (protein glutaminase) added. I found it.
- the present invention has been completed by further studies based on this finding. That is, the present invention provides the inventions of the following aspects.
- Item 1 A thermal coagulation gel strength modifier for egg white protein, including a protein deamidating enzyme.
- Item 2. Item 2. The heat coagulation gel strength adjusting agent according to Item 1, which is used for producing a food containing a heat coagulation gel of egg white protein.
- Item 3. Item 2. The heat coagulation gel strength adjustment according to Item 1 or 2, wherein the amount of the protein deamidating enzyme used per 1 g of the egg white protein is 0.1 to 19 U, and is used for enhancing the heat coagulation gel strength of the egg white protein. Agent.
- Item 4. Item 2.
- the heat coagulation gel strength adjusting agent according to Item 1 or 2, wherein the amount of the protein deamidating enzyme used per 1 g of the egg white protein is 20 U or more, and is used for reducing the heat coagulation gel strength of the egg white protein.
- Item 5. A method for adjusting the heat coagulation gel strength of egg white protein, which comprises a step 1 of treating the egg white protein with a protein deamidating enzyme and a step 2 of heat coagulating the treated egg white protein.
- a gelling material comprising a step of treating a material containing egg white protein with a heat coagulation gel strength modifier for egg white protein containing a protein deamidating enzyme to obtain a gelling material having an adjusted heat coagulation gel strength. Manufacturing method.
- Item 6 A method for producing a food product, which comprises a step of heat-coagulating the gelling material obtained by the production method according to Item 6.
- Item 6 includes a step of preparing a mixture of the gelling material obtained by the production method according to Item 6 and another food material, and a step of heating the mixture at a temperature at which the gelling material heats and coagulates. How to make food.
- a technique capable of controlling the increase / decrease (increase or decrease) of the thermal coagulation gel strength of egg white protein and having a small effect on the taste.
- the results of adjusting the thermal coagulation gel strength by PG treatment for egg white albumin having a dilution rate of 5 w / v% are shown.
- the results of adjusting the thermal coagulation gel strength by PG treatment for egg white albumin having a dilution rate of 10 w / v% are shown.
- the egg white protein heat coagulation gel strength adjuster of the present invention is characterized by containing a protein deamidating enzyme.
- the active ingredient protein deamidating enzyme is contained as an active ingredient of the heat coagulation gel strength adjusting agent for the egg white protein of the present invention.
- the type and origin of the protein deamidating enzyme are not particularly limited as long as they have an action of degrading the amide group-containing side chain of a protein without cleaving a peptide bond and cross-linking the protein.
- Examples of protein deamidating enzymes are Chryseobacterium, Flavobacterium, Empedobacter, disclosed in JP2000-50887A, JP2001-218590A, WO2006 / 075772A1.
- protein deamidating enzymes derived from the genus Sphingobacterium, Aureobacterium or Myroides, and protein glutaminase derived from the genus Chryseobacterium.
- protein deamidating enzymes one type may be used alone, or a plurality of types may be used in combination.
- a protein deamidating enzyme derived from Chryseobacterium is preferable, and a protein deamidating enzyme derived from Chryseobacterium is more preferable, from the viewpoint of further enhancing the effect of adjusting the heat coagulation gel strength of egg white protein.
- Protein glutaminase more preferably protein glutaminase derived from Chryseobacterium proteolyticum species can be mentioned.
- the protein deamidating enzyme can be prepared from the culture solution of the microorganism from which the above protein deamidating enzyme is derived.
- Specific preparation methods include a method of recovering protein deamidating enzyme from the above-mentioned microbial culture solution or cells.
- the enzyme can be separated and / or purified after collecting the cells from the culture solution by filtration, centrifugation or the like in advance, if necessary.
- the cells were recovered from the culture solution in advance as needed, and then the cells were crushed by pressure treatment, ultrasonic treatment, etc. to expose the enzyme.
- the enzyme can be separated and / or purified.
- a known protein separation and / or purification method can be used without particular limitation, and for example, a centrifugation method, a UF concentration method, a salting out method, an ion exchange resin, or the like can be used.
- Various chromatographic methods using the above can be mentioned.
- the separated and / or purified enzyme can be pulverized by a drying method such as freeze-drying, vacuum drying, spray drying, etc., and using an excipient and / or a drying aid suitable for the drying method. It can also be powdered.
- the separated and / or purified enzyme can also be liquefied by adding an appropriate additive and sterilizing by filtration.
- a commercially available product can also be used as the protein deamidating enzyme, and an example of a preferable commercially available product is the protein glutaminase "Amano" 500 manufactured by Amano Enzyme Co., Ltd.
- the content of the protein deamidating enzyme in the heat coagulation gel strength modifier of the egg white protein of the present invention is not particularly limited, but is, for example, 0.1 to 10,000 U / g, preferably 1 to 8,000 U / g, 10 to. 6,000 U / g, 50 to 4,000 U / g, 100 to 2,000 U / g, 150 to 1,000 U / g, 200 to 800 U / g, more preferably 300 to 700 U / g, still more preferably 400 to 600 U / g, more preferably 450 to 550 U / g.
- benzyloxycarbonyl-L-glutaminylglycine (Z-Gln-Gly) is used as a substrate, and the amount of the enzyme that favors 1 ⁇ mol of ammonia per minute is 1 unit (1U).
- the heat coagulation gel strength adjusting agent for egg white protein of the present invention may contain other ingredients to the extent that the effects of the present invention are not affected.
- examples of other components include enzymes and additives other than the above-mentioned predetermined protein glutaminase.
- enzymes include, for example, amylase ( ⁇ -amylase, ⁇ -amylase, glucoamylase), glucosidase ( ⁇ -glucosidase, ⁇ -glucosidase), galactosidase ( ⁇ -galactosidase, ⁇ -galactosidase), protease (acidic protease, medium).
- Sex protease alkaline protease
- peptidase leucine peptidase, aminopeptidase
- lipase lipase
- esterase cellulase
- phosphatase acidic phosphatase, alkaline phosphatase
- nuclease deaminase, oxidase, dehydrogenase, glutaminase, pectinase, catalase, dextranase, trans Examples thereof include glutaminase and pluranase.
- These other enzymes may be contained alone or in combination of a plurality of types.
- Examples of the additive include excipients, buffers, suspensions, stabilizers, preservatives, preservatives, physiological saline and the like.
- Examples of the excipient include starch, dextrin, maltose, trehalose, lactose, D-glucose, sorbitol, D-mannitol, sucrose, glycerol and the like.
- Examples of the buffer include phosphates, citrates, acetates and the like.
- Examples of the stabilizer include propylene glycol, ascorbic acid and the like.
- Examples of the preservative include phenol, benzalkonium chloride, benzyl alcohol, chlorobutanol, methylparaben and the like.
- Examples of the preservative include ethanol, benzalkonium chloride, paraoxybenzoic acid, chlorobutanol and the like.
- the form of the heat coagulation gel strength adjusting agent for the egg white protein of the present invention is not particularly limited, and examples thereof include liquid form and solid form (powder, granule, etc.). Preparation to these forms may be carried out by a generally known method.
- the heat coagulation gel strength modifier for egg white protein of the present invention is used for the purpose of enhancing or reducing the gel strength of the gel produced by the heat coagulation of egg white protein.
- the heat coagulation gel strength modifier for egg white protein of the present invention comprises a step 1 of treating the egg white protein with a protein deamidating enzyme and a step 2 of heat coagulating the treated egg white protein. It can be used as an agent for giving a protein deamidating enzyme for treating egg white protein in the heat coagulation gel strength adjusting method.
- the egg white protein is not particularly limited as long as it is the egg white protein of a bird's egg, but preferably an edible egg of a bird, and more preferably an egg white protein of a chicken egg.
- the egg white protein is not particularly limited as long as it is a protein constituting egg white, and examples thereof include ovalbumin, ovotransferrin, ovomucin, and ovomucin.
- These egg white proteins may be used alone. Alternatively, a plurality of types may be used in combination.
- at least ovalbumin is preferably contained from the viewpoint of further enhancing the effect of adjusting the heat coagulation gel strength of the egg white protein.
- the specific form of the egg white protein in step 1 is not particularly limited as long as it contains an egg white protein that has not been heat-coagulated, and is, for example, purified egg white protein, raw egg white, dried egg white, raw whole egg, and Examples include dried whole eggs and mixtures of these with other ingredients (eg, other ingredients, etc.).
- the dilution ratio of the egg white protein in the step 1 is not particularly limited, but is, for example, 0.1 to 30 w / v%, preferably 0.3 to 25 w / v%, more preferably 0.6 to 20 w / v%, still more preferable. Is 1 to 15 w / v%, more preferably 3 to 12 w / v%.
- the control for enhancing or reducing the gel strength of the gel produced by the heat coagulation of the egg white protein with the heat coagulation gel strength modifier of the egg white protein of the present invention is the protein deamidation with respect to the amount of the egg white protein in step 1. This can be done by adjusting the amount of enzyme used. For example, when enhancing the gel strength of the gel produced by the thermal coagulation of the egg white protein, the amount of the protein deamidating enzyme used is relatively small with respect to the amount of the egg white protein, and the gel strength of the gel produced by the thermal coagulation of the egg white protein is reduced. If so, the amount of protein deamidating enzyme used can be relatively large relative to the amount of egg white protein.
- the amount of the protein deamidating enzyme used per 1 g of the egg white protein is, for example, 0.1 to 19 U, preferably 0.25. ⁇ 15U, 0.5 ⁇ 11U, 0.75 ⁇ 7.5U, 1 ⁇ 4U, more preferably 1.5 ⁇ 3.5U, still more preferably 2-3U, still more preferably 2.2 ⁇ 2.8U. Can be mentioned.
- the amount of the protein deamidating enzyme used per 1 g of the egg white protein can be increased, for example, the amount used is 5 U or more and 10 U or more. It is preferably 15 U or more, 20 U or more, more preferably 25 U or more, still more preferably 50 U or more, still more preferably 100 U or more, still more preferably 200 U or more.
- the upper limit of the range of the amount of the protein deamidating enzyme used per 1 g of egg white protein is not particularly limited, and examples thereof include 500 U or less, 400 U or less, 300 U or less, or 260 U or less.
- the protein deamidating enzyme treatment temperature in step 1 is not particularly limited as long as it is lower than the thermal coagulation temperature of the egg white protein, and can be appropriately determined by those skilled in the art based on the optimum temperature of the protein deamidating enzyme and the like. It is preferably 35 to 65 ° C, 35 to 60 ° C, 35 to 59 ° C, more preferably 36 to 55 ° C, still more preferably 37 to 55 ° C, still more preferably 38 to 50 ° C, and even more preferably 39 to 45 ° C. Can be mentioned.
- the protein deamidating enzyme treatment time in step 1 is not particularly limited and may be appropriately determined according to the charging scale of the composition and the like, but for example, 0.5 hours or more, preferably 1 hour or more, more preferably 1. .5 hours or more, more preferably 2 hours or more, 8 hours or more, 12 hours or more, or 20 hours or more.
- the upper limit of the time range is not particularly limited, and examples thereof include 30 hours or less, 24 hours or less, 12 hours or less, 8 hours or less, 6 hours or less, or 4 hours or less.
- the treatment temperature in step 2 is not particularly limited as long as it can thermally coagulate the egg white protein, and may be appropriately determined according to the type of the target egg white protein. For example, 60 ° C. or higher, preferably 65 ° C. As described above, the temperature is more preferably 70 ° C. or higher, further preferably 75 ° C. or higher, and even more preferably 78 ° C. or higher.
- the upper limit of the treatment temperature range is not particularly limited as long as the hot coagulation gel of the egg white protein can be obtained, and can be appropriately determined by those skilled in the art according to the morphology of the egg white protein. For example, when the heat coagulation gel strength adjusting agent for egg white protein of the present invention is used in the production of a food product described later, it can be treated at a normal heating temperature for cooking the food product.
- the heat coagulation gel strength modifier for egg white protein of the present invention can increase or decrease the heat coagulation gel strength of egg white protein, foods cooked using egg white protein can be cooked. Texture characteristics can be further diversified. Therefore, the heat coagulation gel strength adjusting agent for egg white protein of the present invention can be preferably used for producing a food containing the heat coagulation gel for egg white protein.
- the food containing the hot coagulation gel of egg white protein is not particularly limited as long as it is a food obtained by cooking using egg white, but it is not preferable from the viewpoint of further enhancing the effect of adjusting the hot coagulation gel strength of egg white protein.
- Examples include emulsified foods. More specific foods include cooked egg foods (eg, boiled eggs, hot spring eggs, pouched eggs, roasted eggs, thick roasted eggs, rolled eggs, Tianjin bowl egg ingredients, shavings, egg binding, kisses.
- Omlet thinly roasted egg (Omuraisu sheet, brocade egg), steamed tea bowl, egg tofu, etc., foods that use egg white as a binder (kamaboko, chikuwa, hampen, date roll, fish sausage and other fish paste foods; hamburger, meat balls, patties, etc. Processed livestock meat such as meat loaf and minced meat; foods in which these are replaced with vegetable artificial meat, etc.) can be mentioned.
- step 1 is performed at any stage where the egg white protein is not heat-coagulated, and then the egg white protein is heated.
- a normal cooking step (step corresponding to step 2 above) for coagulation can be performed.
- the protein deamidating enzyme which is an active component of the heat coagulation gel strength adjusting agent for egg white protein of the present invention, increases or decreases the heat coagulation gel strength of egg white protein. Adjustment is possible. Therefore, the present invention also provides a method for adjusting the heat coagulation gel strength of egg white protein, which comprises a step 1 of treating the egg white protein with a protein deamidating enzyme and a step 2 of thermally coagulating the treated protein.
- the protein deamidating enzyme can be adjusted by increasing or decreasing the gel strength of the gel produced by the thermal coagulation of the egg white protein, and is treated with the protein deamidating enzyme.
- the egg white protein can be used as a gelling material having an adjusted heat coagulation gel strength.
- the present invention comprises a step of treating a material containing egg white protein with a heat coagulation gel strength adjusting agent for egg white protein containing a protein deamidating enzyme to obtain a gelling material having an adjusted heat coagulation gel strength. Also provided are methods of making gelling materials, including.
- the heat coagulation gel strength adjusting agent for egg white protein containing protein deamidating enzyme is as shown in the column of "1. Heat coagulation gel strength adjusting agent for egg white protein”.
- examples of the material containing egg white protein in the method for producing a gelling material of the present invention include purified egg white protein, raw egg white, dried egg white, raw whole egg, and dried whole egg.
- the form of the gelling material having an adjusted heat coagulation gel strength obtained in the method for producing the gelling material of the present invention is not particularly limited as long as the egg white protein is not heat coagulated.
- examples of the form of the gelling material having the adjusted thermal coagulation gel strength include liquid and solid (frozen, freeze-dried, spray-dried, etc.).
- the above-mentioned heat-coagulating gel strength-adjusted gelling material can be used in the production of various foods. Therefore, the present invention also provides a method for producing a food product using the gelling material having the above-mentioned heat coagulation gel strength adjusted.
- An example of the method for producing a food product of the present invention includes a step of heat-coagulating a gelling material having an adjusted heat-coagulation gel strength.
- the temperature of heat coagulation is not particularly limited as long as it can heat coagulate egg white protein, and is appropriately determined according to the type of egg white protein used as a raw material for gelling material. However, for example, 60 ° C. or higher, preferably 65 ° C. or higher, more preferably 70 ° C. or higher, still more preferably 75 ° C. or higher, still more preferably 78 ° C. or higher.
- the upper limit of the processing temperature range is not particularly limited, but can be appropriately determined by those skilled in the art according to the form of the food to be produced.
- Examples of the food obtained by the above-mentioned example of the method for producing a food include cooked eggs, and more specifically, boiled eggs, hot spring eggs, pouched eggs, roasted eggs, thick roasted eggs, and rolled eggs.
- Examples include egg ingredients for Tianjin bowl, shaved balls, egg binding, kiss, omelet, thinly roasted egg (Omuraisu sheet, brocade egg), steamed tea bowl, and egg tofu.
- a step of preparing a mixture of the gelling material having an adjusted thermal coagulation gel strength and another food material includes a step of heating at a temperature at which the material heats and solidifies.
- Examples of the food obtained by another example of the above-mentioned method for producing food include foods using egg white as a binder, and more specifically, fish-kneaded foods such as kamaboko, chikuwa, hampen, date roll, and fish sausage; hamburger. , Processed livestock meat such as meat balls, patties, meat loaf, minced meat; foods in which these are replaced with vegetable artificial meat and the like can be mentioned.
- PG-500 Protein-glutaminase “Amano” 500; Chryseobacterium proteinolyticum-derived protein glutaminase; also referred to as “PG” below
- PG Protein-glutaminase
- the protein deamidating enzyme activity value was measured by the following method. To 1 mL of 0.2 M phosphate buffer (pH 6.5) containing 30 mM Z-Gln-Gly, 0.1 mL of a sample solution containing a protein deamidating enzyme was added, left at 37 ° C. for 10 minutes, and then 0.4 M TCA. 1 mL of the solution was added to stop the reaction. As a blank, add 1 mL of 0.4 M TCA test solution to 1 mL of 0.2 M phosphate buffer (pH 6.5) containing 30 mM Z-Gln-Gly, and further add 0.1 mL of a sample solution containing protein deamidating enzyme. It was left at 37 ° C. for 10 minutes.
- Ammonia test Wako (Fuji Film Wako Pure Chemical Industries, Ltd.) was used for the solution obtained above to measure the amount of ammonia generated in the reaction solution.
- the ammonia concentration in the reaction solution was determined from a calibration curve showing the relationship between the ammonia concentration and the absorbance (630 nm) prepared using an ammonia standard solution (ammonium chloride).
- the activity of the protein deamidating enzyme was calculated from the following formula, with the amount of the enzyme producing 1 ⁇ mol of ammonia per minute as 1 unit (1 U).
- the amount of the reaction solution is 2.1
- the amount of the enzyme solution is 0.1
- Df is the dilution ratio of the enzyme solution.
- 17.03 is the molecular weight of ammonia.
- Test Example 1 0.5 g egg white albumin (Fujifilm Wako Pure Chemical Industries, Ltd.) was weighed into a 50 mL tube, and 10 mL of 50 mM phosphate buffer (pH 7.0) was added (egg white albumin dilution ratio: 5 w / v%). PG was added to 1 g of ovalbumin as a substrate at 2.5 U, 25 U, or 250 U, and allowed to stand at 40 ° C. for 2 hours or 24 hours for reaction. All the reaction solution was transferred to a petri dish and heated at 80 ° C. for 1 hour to coagulate. The gel strength of the egg white albumin thermal coagulation gel was measured using a leometer (manufactured by Sun Scientific Co., Ltd.). The obtained heat-coagulation gel strength was converted into a relative amount (%) with the gel strength of the egg white albumin heat-coagulation gel obtained in the same manner as 100% except that PG was not added. The results are shown in FIG.
- Test Example 2 1.0 g egg white albumin was weighed in a 50 mL tube, and 10 mL of 50 mM phosphate buffer (pH 7.0) was added to set the egg white albumin dilution ratio to 10 w / v% and the PG treatment time to 24 hours. The relative amount (%) of the gel strength of the egg white albumin heat coagulation gel was obtained in the same manner as in Test Example 1. The results are shown in FIG.
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Abstract
Description
項2. 卵白タンパク質の熱凝固ゲルを含む食品の製造に用いられる、項1に記載の熱凝固ゲル強度調整剤。
項3. 前記卵白タンパク質1g当たりの前記タンパク質脱アミド酵素の使用量が0.1~19Uであり、卵白タンパク質の熱凝固ゲル強度を増強するために用いられる、項1又は2に記載の熱凝固ゲル強度調整剤。
項4. 前記卵白タンパク質1g当たりの前記タンパク質脱アミド酵素の使用量が20U以上であり、卵白タンパク質の熱凝固ゲル強度を低減するために用いられる、項1又は2に記載の熱凝固ゲル強度調整剤。
項5. タンパク質脱アミド酵素で卵白タンパク質を処理する工程1と、処理された卵白タンパク質を熱凝固させる工程2とを含む、卵白タンパク質の熱凝固ゲル強度調整法。
項6. タンパク質脱アミド酵素を含む卵白タンパク質の熱凝固ゲル強度調整剤を用いて、卵白タンパク質を含む素材を処理し、熱凝固ゲル強度が調整されたゲル化用素材を得る工程を含む、ゲル化用素材の製造方法。
項7. 項6に記載の製造方法によって得られたゲル化用素材を加熱凝固する工程を含む、食品の製造方法。
項8. 項6に記載の製造方法によって得られたゲル化用素材と他の食品素材との混合物を調製する工程と、前記混合物を、前記ゲル化用素材が加熱凝固する温度で加熱する工程を含む、食品の製造方法。
本発明の卵白タンパク質の熱凝固ゲル強度調整剤は、タンパク質脱アミド酵素を含むことを特徴とする。
タンパク質脱アミド酵素は、本発明の卵白タンパク質の熱凝固ゲル強度調整剤の有効成分として含まれる。タンパク質脱アミド酵素としては、ペプチド結合の切断及びタンパク質の架橋を伴わずタンパク質のアミド基含有側鎖を分解する作用を示す酵素であれば、その種類及び由来等は特に限定されない。タンパク質脱アミド酵素の例として、JP2000-50887A、JP2001-218590A、WO2006/075772A1に開示された、クリセオバクテリウム(Chryseobacterium)属、フラボバクテリウム(Flavobacterium)属、エンペドバクター(Empedobacter)属、スフィンゴバクテリウム(Sphingobacterium)属、アウレオバクテリウム(Aureobacterium)属又はミロイデス(Myroides)属由来のタンパク質脱アミド酵素、及びクリセオバクテリウム属由来のプロテイングルタミナーゼの市販品が挙げられる。これらのタンパク質脱アミド酵素としては、1種を単独で用いてもよいし、複数種を組み合わせて用いてもよい。
本発明の卵白タンパク質の熱凝固ゲル強度調整剤は、上記のタンパク質脱アミド酵素以外に、本発明の効果に影響を与えない程度に、他の成分を含んでいてもよい。他の成分としては、上記所定のプロテイングルタミナーゼ以外の他の酵素、添加剤等が挙げられる。
本発明の卵白タンパク質の熱凝固ゲル強度調整剤の形態としては特に限定されず、例えば、液状、固形状(粉末、顆粒等)等が挙げられる。これらの形態への調製は、一般的に公知の方法で行えばよい。
本発明の卵白タンパク質の熱凝固ゲル強度調整剤は、卵白タンパク質の熱凝固により生じるゲルのゲル強度を、増強する又は低減することを目的として用いられる。具体的には、本発明の卵白タンパク質の熱凝固ゲル強度調整剤は、タンパク質脱アミド酵素で卵白タンパク質を処理する工程1と、処理された卵白タンパク質を熱凝固させる工程2とを含む、卵白タンパク質の熱凝固ゲル強度調整法において、卵白タンパク質を処理するタンパク質脱アミド酵素を与える剤として用いることができる。
上述の通り、本発明の卵白タンパク質の熱凝固ゲル強度調整剤の有効成分であるタンパク質脱アミド酵素は、卵白タンパク質の熱凝固ゲル強度を増減させたり低減させたりする調整が可能である。従って、本発明は、タンパク質脱アミド酵素で卵白タンパク質を処理する工程1と、処理されたタンパク質を熱凝固させる工程2とを含む、卵白タンパク質の熱凝固ゲル強度調整法も提供する。
上述の通り、タンパク質脱アミド酵素は、卵白タンパク質の熱凝固により生じるゲルのゲル強度を、増強する又は低減することで調整することができ、タンパク質脱アミド酵素によって処理された卵白タンパク質は、熱凝固ゲル強度が調整されたゲル化用素材として用いることができる。
上記の熱凝固ゲル強度が調整されたゲル化用素材は、様々な食品の製造に用いることができる。従って、本発明は、上記の熱凝固ゲル強度が調整されたゲル化用素材を用いた食品の製造方法も提供する。
タンパク質脱アミド酵素として、PG-500(Protein-glutaminase“Amano”500;Chryseobacterium proteolyticum由来プロテイングルタミナーゼ;以下において「PG」とも記載する。)を用いた。
30mM Z-Gln-Glyを含む0.2Mリン酸バッファー(pH6.5)1mLにタンパク質脱アミド酵素を含む試料溶液0.1mLを添加して、37℃、10分間放置した後、0.4M TCA溶液を1mL加えて反応を停止した。ブランクとして、30mM Z-Gln-Glyを含む0.2Mリン酸バッファー(pH6.5)1mLに0.4M TCA試液を1mL加え、さらにタンパク質脱アミド酵素を含む試料溶液0.1mLを添加して、37℃で10分間放置した。
50mLチューブに、0.5g卵白アルブミン(富士フイルム和光純薬株式会社)を秤量し、50mMリン酸緩衝液(pH7.0)を10mL添加した(卵白アルブミン希釈率:5w/v%)。PGを、基質である卵白アルブミン1gに対して、2.5U、25U、又は250U添加し、40℃で2時間又は24時間静置して反応させた。シャーレに反応液を全て移し、80℃で1時間加熱することで、熱凝固させた。卵白アルブミン熱凝固ゲルについて、レオメーター(株式会社サン科学製)を用いてゲル強度を測定した。得られた熱凝固ゲル強度を、PGを添加しなかったことを除いて同様にして得られた卵白アルブミン熱凝固ゲルのゲル強度を100%とする相対量(%)に変換した。結果を図1に示す。
50mLチューブに、1.0g卵白アルブミンを秤量し、50mMリン酸緩衝液(pH7.0)を10mL添加することで、卵白アルブミン希釈率を10w/v%とし、PG処理時間を24時間としたことを除いて、試験例1と同様に、卵白アルブミン熱凝固ゲルのゲル強度の相対量(%)を得た。結果を図2に示す。
Claims (8)
- タンパク質脱アミド酵素を含む、卵白タンパク質の熱凝固ゲル強度調整剤。
- 卵白タンパク質の熱凝固ゲルを含む食品の製造に用いられる、請求項1に記載の熱凝固ゲル強度調整剤。
- 前記卵白タンパク質1g当たりの前記タンパク質脱アミド酵素の使用量が0.1~19Uであり、卵白タンパク質の熱凝固ゲル強度を増強するために用いられる、請求項1又は2に記載の熱凝固ゲル強度調整剤。
- 前記卵白タンパク質1g当たりの前記タンパク質脱アミド酵素の使用量が20U以上であり、卵白タンパク質の熱凝固ゲル強度を低減するために用いられる、請求項1又は2に記載の熱凝固ゲル強度調整剤。
- タンパク質脱アミド酵素で卵白タンパク質を処理する工程1と、処理された卵白タンパク質を熱凝固させる工程2とを含む、卵白タンパク質の熱凝固ゲル強度調整法。
- タンパク質脱アミド酵素を含む卵白タンパク質の熱凝固ゲル強度調整剤を用いて、卵白タンパク質を含む素材を処理し、熱凝固ゲル強度が調整されたゲル化用素材を得る工程を含む、ゲル化用素材の製造方法。
- 請求項6に記載の製造方法によって得られたゲル化用素材を加熱凝固する工程を含む、食品の製造方法。
- 請求項6に記載の製造方法によって得られたゲル化用素材と他の食品素材との混合物を調製する工程と、前記混合物を、前記ゲル化用素材が加熱凝固する温度で加熱する工程を含む、食品の製造方法。
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EP21898031.6A EP4253533A1 (en) | 2020-11-27 | 2021-11-25 | Heat coagulation gel strength regulating agent for egg white protein |
US18/254,697 US20240008515A1 (en) | 2020-11-27 | 2021-11-25 | Heat coagulation gel strength regulating agent for egg white protein |
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Citations (5)
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JPH07250651A (ja) | 1994-03-14 | 1995-10-03 | Ajinomoto Co Inc | 卵加工食品の製造法 |
JP2000050887A (ja) | 1998-06-04 | 2000-02-22 | Amano Pharmaceut Co Ltd | 新規蛋白質脱アミド酵素、それをコ―ドする遺伝子、その製造法並びにその用途 |
JP2001218590A (ja) | 1999-12-03 | 2001-08-14 | Amano Enzyme Inc | 新規蛋白質脱アミド酵素、それを生産する微生物、それをコードする遺伝子、その製造法及び用途 |
WO2006075772A1 (ja) | 2005-01-13 | 2006-07-20 | Ajinomoto Co., Inc. | 乳製品及びその製造方法 |
JP2017175976A (ja) | 2016-03-29 | 2017-10-05 | 味の素株式会社 | 卵加工食品の製造方法 |
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- 2021-11-25 EP EP21898031.6A patent/EP4253533A1/en active Pending
- 2021-11-25 CN CN202180073052.XA patent/CN116456838A/zh active Pending
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JPH07250651A (ja) | 1994-03-14 | 1995-10-03 | Ajinomoto Co Inc | 卵加工食品の製造法 |
JP2000050887A (ja) | 1998-06-04 | 2000-02-22 | Amano Pharmaceut Co Ltd | 新規蛋白質脱アミド酵素、それをコ―ドする遺伝子、その製造法並びにその用途 |
JP2001218590A (ja) | 1999-12-03 | 2001-08-14 | Amano Enzyme Inc | 新規蛋白質脱アミド酵素、それを生産する微生物、それをコードする遺伝子、その製造法及び用途 |
WO2006075772A1 (ja) | 2005-01-13 | 2006-07-20 | Ajinomoto Co., Inc. | 乳製品及びその製造方法 |
JP2017175976A (ja) | 2016-03-29 | 2017-10-05 | 味の素株式会社 | 卵加工食品の製造方法 |
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