JP2005080538A - Raw oyster powder or granule having excellent preservation stability, and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide raw oyster powder or a granule having excellent preservation stability and favorable palatability. <P>SOLUTION: The raw oyster powder or a granule having excellent preservation stability is wrapped with a matrix comprising collagen and/or albumin, or coated with a coating film comprising collagen and/or albumin. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to raw oyster powder or granules having excellent storage stability and good palatability, and a method for producing the same.

  Raw oysters are rich in protein (8-15%), carbohydrates (4-7%), lipids (1-2%), free amino acids, minerals, vitamins, etc. and are excellent nutritional foods. In particular, raw oysters contain a large amount of zinc (Zn: 12-15 mg / 100 g) and vitamin B12 (20-30 μg) that enhance insulin secretion and activity and cause taste disorders due to deficiency among fish and shellfish. It has long been known as a valuable food for maintaining health.

  However, raw oysters are prone to rot and oxidation and are extremely difficult to preserve in the raw, and there are odors peculiar to oysters, and some people like and hate them, and the limit is from November to April of the following year. There are shortcomings such as being able to eat only at a given time.

Therefore, the present inventor has conducted extensive studies on a method for pulverizing or granulating raw oysters in a form that can be stored for a long time without impairing the above-mentioned components contained in raw oysters. Collagen, which is the main component of interstitial substances, and albumin, which is a soluble protein contained in animal and plant cells and body fluids, are compared to carbohydrates such as sugars conventionally used for coating food powders or granules. The moisture absorption prevention and aeration suppression effects are remarkably excellent, and the dry powder or granules of raw oysters are embedded in a collagen and / or albumin matrix or hermetically covered with a continuous film of collagen and / or albumin. A health food with excellent long-term storage stability and high nutritional tonicity that can be easily ingested whenever necessary It found that it is possible to provide a raw oysters food Te, further, succeeded in raw oysters component to produce a converted raw oysters powder or granules prone organic acid minerals are absorbed, and have completed the present invention.

  Thus, the present invention provides a raw oyster powder or granule excellent in storage stability, characterized by being embedded in a collagen and / or albumin matrix or coated with a collagen and / or albumin film. To do.

The present invention also provides that fresh raw oysters are sufficiently washed with vinegar or acetic acid aqueous solution or saline, soaked in vinegar or acetic acid aqueous solution, emulsified, and before, during or after emulsification, collagen and / or albumin. In addition, if necessary, the raw oyster emulsion obtained by adding excipients and other auxiliary components may be spray-dried or lyophilized under the condition that the surface temperature of the dry powder does not exceed 60 ° C. The present invention provides a method for producing raw oyster powder having a water content of 5% or less and excellent storage stability.

  The present invention further includes washing fresh raw oysters thoroughly with vinegar or acetic acid aqueous solution or saline, immersing in vinegar or acetic acid aqueous solution, emulsifying and applying before, during or after emulsification as necessary. The raw oyster emulsion obtained by adding the dosage form and other auxiliary ingredients is spray-dried or lyophilized under the condition that the surface temperature of the dry powder does not exceed 60 ° C, and the resulting raw oyster powder is used as necessary. The mixture is granulated by adding it to a granulator together with excipients and other auxiliary components, and upon granulation, an aqueous solution containing collagen and / or albumin is sprayed, whereby the formed granules contain collagen and / or albumin. The present invention provides a method for producing dry granules of raw oysters excellent in storage stability, characterized by being coated with a film.

  Hereinafter, the raw oyster powder or granule of the present invention and the production method thereof will be described in more detail.

  Oysters used as raw materials may be natural or cultivated, and include, for example, oysters, oysters, oysters, oysters, oysters, sinoegi, oysters, etc. Is preferred.

  These oysters are unshelled immediately after harvest, optionally washed with water, and the resulting fresh meat is used as a starting material in the present invention. In this specification, this peeled oyster is referred to as “raw oyster”.

  In the present invention, first, raw oysters are sufficiently washed with vinegar, an acetic acid aqueous solution, or saline before the freshness is impaired. Examples of vinegar that can be used for this washing include rice vinegar, grain vinegar (black vinegar, etc.), fruit vinegar, synthetic vinegar, and mixtures thereof. Moreover, as an acetic acid aqueous solution which can be used for washing | cleaning, that whose acetic acid density | concentration is normally in the range of 2 to 25 weight% is suitable, and as salt water, that whose salt concentration is usually within the range of 0.5 to 5 weight% is suitable. Is preferred. Among these, an acetic acid aqueous solution or a saline solution is economical.

  Washing can be performed, for example, by putting raw oysters into vinegar or an acetic acid aqueous solution or saline solution, gently stirring so that they do not collapse, and filtering. Remove contaminants. Ethanol can be added to the vinegar or acetic acid aqueous solution or saline used for washing, if necessary, at a concentration in the range of 2 to 30% by weight, preferably 5 to 15% by weight. The sterilizing effect can be further enhanced.

  The washed raw oyster can then be crushed and emulsified as it is before the freshness is impaired, but in general, it is desirable to pulverize and emulsify after immersion in vinegar or aqueous acetic acid. It is possible to prevent the progress of decay and oxidative alteration during the treatment process. Examples of vinegar that can be used for this immersion treatment include rice vinegar, grain vinegar (black vinegar, etc.), fruit vinegar, synthetic vinegar, and mixtures thereof. A content of ˜25% by weight is preferred. In general, edible vinegar, especially brewed vinegar, is rich in various organic acids and is suitable. Moreover, salt is usually added to the vinegar or acetic acid aqueous solution at a concentration within the range of 0.1 to 1% by weight, particularly 0.3 to 0.7% by weight, based on the solid content of raw oysters. Preferably, if desired, ethanol can also be added at a concentration in the range of 2 to 30% by weight, in particular 5 to 15% by weight.

  The amount of vinegar or acetic acid aqueous solution used to immerse raw oysters is not strictly limited and can be varied over a wide range depending on the type of vinegar used, the concentration of the acetic acid aqueous solution, etc. It is suitable to use in the range of 10-100 ml per 100 g, especially 15-75 ml, more particularly 30-50 ml.

  Although the immersion time of fresh oysters in vinegar or acetic acid aqueous solution is not strictly limited, the protein changes in quality if it is immersed for too long, and is usually 24 hours or less, preferably about 2 to 5 hours. Is appropriate. Further, the temperature at the time of immersion is not particularly limited, and the immersion can usually be performed at room temperature, but in some cases, it may be performed under heating up to about 50 ° C.

  By immersing raw oysters in vinegar or acetic acid aqueous solution, not only can rot and oxidative alteration in the raw oyster processing process, accompanying taste and odor changes, but also sodium, potassium, calcium, The effect that minerals, such as magnesium, phosphorus, and zinc, become soluble acetate is also acquired. In addition, if ethanol is used in combination, the bactericidal action can not only further improve the anti-rot effect of raw oysters, but also extract umami components such as amino acids to enhance the palatability of the resulting raw oyster powder. Also useful. The ethanol is not limited to an ethanol aqueous solution, and ethanol-containing beverages such as shochu, sake, fruit wine, whiskey, gin, and walker can also be used.

  The raw oyster that has been soaked is pulverized and emulsified, and then spray-dried or freeze-dried to obtain a dry powder. At that time, the raw oyster immersed in the vinegar or acetic acid aqueous solution may be directly subjected to a pulverization treatment, or may be subjected to a pulverization treatment after removing excess vinegar or acetic acid aqueous solution.

  The pulverized emulsification can be performed using, for example, a pulverizer such as a mixer or a normal high-speed pulverizer, and the degree of pulverization is 80 mesh or less, particularly in the range of 20 to 60 mesh for the produced emulsion. Until you can pass through.

  The resulting emulsified liquid can be directly subjected to a drying step, or solid impurities such as sand grains and husk fragments can be removed by filtering, for example. Filtration can be performed using a sieve of 80 mesh or less, for example, about 20 to 60 mesh.

  According to the present invention, collagen and / or albumin is added before, during, or after the above-mentioned raw oyster emulsification, and further excipients and other auxiliary components are added as necessary. Thereby, the raw oyster powder embedded in the matrix which comprises collagen and / or albumin can be obtained. Since a film made of collagen and / or albumin is extremely excellent in moisture absorption prevention and aeration suppression effects, this embedding provides a raw oyster powder with excellent long-term storage stability.

  As collagen and albumin, commercially available products can be used, and as albumin, for example, ovalbumin, soybean protein albumin and the like can be used. In this case, the amount of collagen or albumin used or the total amount of collagen and albumin used is usually 1 to 100 parts by weight, preferably 2 to 50 parts per 100 parts by weight of the solid content of raw oysters and excipients and other auxiliary components. Part by weight, more preferably within the range of 3 to 30 parts by weight. When collagen and albumin are used in combination, the ratio of collagen to albumin is generally 95/5 to 5/95 by weight ratio of collagen / albumin, particularly 90/10 to 10/90, more particularly 70/30 to 30. The range of / 70 is appropriate.

  Edible excipients that can be added as necessary include, for example, gum arabic, tragacanth, starch, dextrin, cyclodextrin, alginic acid, fucodyne, other seaweed polysaccharides, glucose, fructose, lactose, sucrose, starch degradation Products, skim milk powder, whole milk, soy protein, methylcellulose, carboxymethylcellulose and the like. Further, as other auxiliary components, for example, coating agents such as gelatin, kombu powder, alginic acid, seaweed paste; calcium acetate, calcium carbonate, calcium phosphate, magnesium carbonate, sodium phosphate, sodium citrate, Zn, Mo, Fe, Edible salts such as Cu, Se and I; seasonings such as sugar, salt and spices; vitamins such as carotene, vitamin B and vitamin E; ascorbic acid (vitamin C), tocopherol, turmeric, 2 "-O-glucosyl Antioxidants such as flavonoids such as isovitexin, polyphenols and catechins; natural preservatives such as garlic powder and ginger; ginkgo biloba extract powder, tea powder, green paste powder, pepper, yeast and the like. Agents and other auxiliary ingredients may be used alone or in combination of two or more as required It can be used.

  The blending ratio of these excipients and other auxiliary ingredients to the raw oyster emulsion is not limited at all, and can be arbitrarily set. However, when used, the excipient and other auxiliary ingredients are usually used. Is preferably used in the range of 10 to 1000 parts by weight, particularly 50 to 500 parts by weight, and more particularly 100 to 300 parts by weight per 100 parts by weight of the solid content in the raw oyster emulsion.

  The raw oyster emulsified solution is spray-dried or freeze-dried in a state where it is intimately mixed with collagen and / or albumin, and further with the above-mentioned excipients and other auxiliary components as appropriate.

  Spray drying is preferably carried out under conditions where the apparent surface temperature of the dried particles does not exceed 60 ° C., preferably 55 ° C., in particular such that the surface temperature is in the range of 40-50 ° C. Is preferably carried out under conditions of an air blowing temperature of about 170 to about 230 ° C., particularly about 170 to about 200 ° C. and an exhaust temperature of about 100 to about 150 ° C., particularly about 110 to about 130 ° C.

  Freeze-drying can be performed by a method known per se.

  Spray drying and freeze-drying are performed until the moisture content in the resulting dry powder is 5% by weight or less, preferably 3% by weight or less. When the moisture content in the resulting dry powder is more than 5% by weight, the enzyme in the powder may work and cause deterioration, discoloration, decay, and the like.

In this way, a raw oyster powder excellent in storage stability embedded in a matrix in which the raw oyster component contains collagen and / or albumin can be obtained.
The raw oyster powder obtained may be added with excipients and other auxiliary ingredients as necessary (if the powder already contains excipients and other auxiliary ingredients, this addition may be omitted as the case may be. Good), can be put into a granulator and granulated in a manner known per se. Examples of excipients and other auxiliary components that can be added in this granulation include those exemplified above for the production of raw oyster powder.

  Further, according to another aspect of the present invention, raw oyster powder is produced in the same manner as described above except that collagen and / or albumin is not added to the raw oyster emulsion before, during or after the emulsion. The raw oyster powder obtained is granulated by putting it into a granulator together with the above-mentioned excipients and other auxiliary components as necessary, and spraying an aqueous solution containing collagen and / or albumin during the granulation. Thus, raw oyster granules coated with a film containing collagen and / or albumin can be obtained. As described above, a film comprising collagen and / or albumin is extremely excellent in moisture absorption prevention and aeration suppressing effects, so that this coating can provide raw oyster granules with excellent long-term storage stability.

  The concentration of collagen or albumin in the aqueous solution sprayed into the granulator or the total concentration of collagen and albumin is usually within the range of 1 to 30% by weight, preferably 3 to 10% by weight. The spray amount of the aqueous solution containing albumin is not strictly limited, but in general, the total amount of the raw oyster powder to be coated and the excipient and other auxiliary components is 1 in solids per 100 parts by weight. It is preferably within the range of ˜30 parts by weight, particularly 2 to 20 parts by weight, more particularly 3 to 15 parts by weight. When collagen and albumin are used in combination, the ratio of collagen to albumin is generally 95/5 to 5/95, particularly 90/10 to 10/90, more particularly 70/30 to 30 / in weight ratio of collagen / albumin. A range of 70 is appropriate.

  As the granulator used for granulation, for example, a fluidized drying granulator, a fluidized bed granulator, a spouted bed granulator, etc. are used, and these can be operated by a method known per se. it can. For example, a fluid drying granulator can be operated by spraying raw oyster powder with an aqueous solution containing collagen and / or albumin with hot air at about 70 to about 100 ° C.

  Further, the granulation of the raw oyster powder can be performed on the raw oyster powder in a form embedded in a matrix containing collagen and / or albumin produced as described above. Thereby, raw oyster granules having further improved long-term storage stability can be obtained.

  The raw oyster powder or granule produced as described above is maintained as it is without substantially damaging the ingredients inherent in the raw oyster, and is extremely excellent in nutritional tonicity, maintaining and promoting health. It is useful as a health and health food for.

  In addition, the raw oyster powder or granule produced according to the present invention has a very low water content and can be stored stably for a long period of time, so that it can fully enjoy the flavor of raw oysters even at times when it is not suitable for oysters. Can do.

  Furthermore, raw oyster powder or granules produced using vinegar contains abundant minerals in the form of soluble salts, and is extremely palatable with the remaining vinegar, and digestive absorption. It is extremely useful not only for improving the health of healthy people but also for the diet of sick people.

  Thus, the raw oyster powder or granule provided by the present invention can be used for food as it is, or can be formed into a tablet form, filled in a capsule and supplied as a health food, For example, it can be widely used in processed foods, such as preparing sprinkles by mixing with cut sardines, sesame seeds, cuckoo powder, salt, spices and the like.

  EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples.

Example 1
10 kg of fresh raw oysters were put into 10 L of an aqueous solution with an acetic acid concentration of 15% by weight, washed thoroughly with gentle stirring, the washing solution was removed by filtration, 10 L of brewed vinegar was added, and the mixture was left at room temperature for 5 hours. Further, 1.5 kg of dextrin (Matsutani Chemical Co., Ltd., trade name: Paindex # 2) and 10 g of vitamin C were added and stirred, and then egg white albumin (Kewpie Co., Ltd., trade name: Protein UH-A) 50 g and collagen ( Coach Industries Inc., trade name Marine Collagen) 50g was added, put into a mixer, ground for 5 minutes, and filtered through a 40 mesh sieve. The resulting emulsified liquid is spray-dried at a blowing temperature of 180 ° C. and an exhaust temperature of 120 ° C. so that the surface temperature of the dried particles is about 50 ° C. or less, and a vinegar powder having a water content of 3.5% by weight. 3.5 kg was obtained.
Example 2
After washing 10 kg of fresh raw oysters in the same manner as in Example 1, 7 L of brewed vinegar was added and allowed to stand at 50 ° C. for 1 hour. Inc., trade name Marine Collagen) 50 g was added, put into a mixer, ground for 7 minutes, and filtered through a 40 mesh sieve. The resulting emulsified liquid was spray-dried at a blowing temperature of 200 ° C., an exhaust temperature of 125 ° C. and a dry particle surface temperature of about 45 ° C. or less, and a water content of 5% by weight vinegar powder. 5 kg was obtained.

1 kg of the above vinegar powder is put into a fluidized dry granulator, and 1 L of an aqueous solution in which 5 g of sodium alginate and 50 g of collagen (Coach Industries Inc., trade name marine collagen) powder are dissolved is sprayed with hot air at about 80 ° C. 950 g of vinegar oyster granules were obtained.
Example 3
After washing 10 kg of fresh raw oysters in the same manner as in Example 1, 7 L of brewed vinegar was added and allowed to stand at 50 ° C. for 1 hour. Inc., trade name Marine Collagen) 30 g was added, put into a mixer, ground for 7 minutes, and filtered through a 40 mesh sieve. The resulting emulsified liquid was spray-dried at a blowing temperature of 200 ° C., an exhaust temperature of 125 ° C. and a dry particle surface temperature of about 45 ° C. or less, and a water content of 5% by weight vinegar powder. 4 kg was obtained.

1 kg of the above vinegar powder is put into a fluidized dry granulator, and 1 L of an aqueous solution in which 5 g of sodium alginate and 50 g of collagen (Coach Industries Inc., trade name Marine Collagen) powder are dissolved is sprayed with hot air of about 80 ° C. 950 g of vinegar oyster granules were obtained.
Example 4
After thoroughly washing 10 kg of raw oysters with 1% saline containing 15% by weight of ethanol, it is immersed in 5 L of rice vinegar, 50 g of collagen (Coach Industries Inc., trade name Marine Collagen) powder, 1 kg of dextrin and sodium chloride. 50 g was added, and after 2 hours, the mixture was put into a mixer, ground for 10 minutes, and filtered through a 40 mesh sieve. The obtained emulsified liquid is spray-dried so that the air temperature is 190 ° C. and the exhaust temperature is 120 ° C. and the surface temperature of the dry particles is 50 ° C. or less to obtain 1.4 kg of raw oyster powder having a water content of 3% by weight. It was.
Example 5
After thoroughly washing 10 kg of raw oysters with 1% saline containing 15% by weight of ethanol, it was immersed in 5 L of rice vinegar, 50 g of egg white albumin (Kewpie Corporation, trade name: Protein UH-A) powder, 1 kg of dextrin. Then, 50 g of sodium chloride was added, and after 2 hours, the mixture was put into a mixer, ground for 10 minutes, and filtered through a 40 mesh sieve. The obtained emulsified liquid was spray-dried so that the air temperature was 190 ° C. and the exhaust temperature was 120 ° C., and the surface temperature of the dry particles was 50 ° C. or less to obtain 1.5 kg of raw oyster powder having a water content of 3% by weight. .
Example 6
After thoroughly washing 10 kg of raw oysters with 1% by weight saline solution, immerse them in a mixed vinegar of 3 liters of rice vinegar and 2 liters of ponzu, add 50 g of salt, put in a mixer for 2 hours, and grind for 10 minutes. And filtered through a 40 mesh sieve. The obtained emulsified liquid is spray-dried so that the air temperature is 190 ° C. and the exhaust temperature is 120 ° C. and the surface temperature of the dry particles is about 50 ° C. or less, and 1.4 kg of raw oyster powder having a water content of 3% by weight is obtained. Obtained.

1.4 kg of the above raw oyster powder is put into a fluidized dry granulator, 1 L of an aqueous solution in which 50 g of collagen (Coach Industries Inc., trade name marine collagen) powder is dissolved is sprayed with hot air of about 80 ° C., and collagen-coated raw oyster granules 1 .35 kg was obtained.
Example 7
After thoroughly washing 10 kg of raw oysters with 1% by weight saline containing 15% by weight of ethanol, soaked in 5 liters of rice vinegar, added 1 kg of dextrin and 20 g of salt, and put it in the mixer after 2 hours. Milled for 10 minutes and filtered through a 40 mesh screen. The obtained emulsified liquid was spray-dried so that the air temperature was 190 ° C and the exhaust temperature was 120 ° C, and the surface temperature of the dried particles was about 50 ° C or less, and 1.4 kg of raw oyster powder having a water content of 3 wt% was obtained. Obtained (hereinafter referred to as A powder).

Collagen (Coach Industries Inc., trade name Marine Collagen) 150g is dissolved in raw oyster emulsion obtained by processing in the same manner as the preparation of A powder, and spray-dried in the same manner as in the manufacture of the above A powder. 1.45 kg of contained vinegar powder was obtained (hereinafter referred to as B powder).

When granulating 250 g of B powder obtained by the same method as described above with a granulator, 100 g of an aqueous spray solution for binding the powder, 5 g of collagen (Coach Industries Inc., trade name Marine Collagen) and egg white albumin (Kuppie Co., Ltd., trade name: Protein UH-A) 2.5 g is added, dissolved at a temperature of 50-60 ° C., and then sprayed with a solution adjusted to a pH of about 7, thereby forming a film consisting of collagen and albumin 240 g of vinegar granules coated with (hereinafter referred to as C powder) was obtained.

  The obtained three kinds of powders were filled into brown bottles and allowed to stand at 30 ° C., and changes in color tone and taste over time were compared. The results are shown in Table 1 below.

Example 8
250 g of vinegar powder having a water content of 3.5% by weight obtained in the same manner as in Example 1 above was placed in a fluidized dry granulator, and 10 g of collagen (Coach Industries Inc., trade name Marine Collagen) and 5 g of gum arabic. 252 g of raw oyster granules were obtained by spraying and granulating 125 mL of an aqueous solution in which the solution was dissolved with hot air at about 80 ° C. When this was put in a container and stored at room temperature, no odor, discoloration, or change in taste was observed even after 2 years.

Claims (5)

  A raw oyster powder or granule excellent in storage stability, which is embedded in a matrix containing collagen and / or albumin or coated with a film containing collagen and / or albumin.   Fresh fresh oysters are thoroughly washed with vinegar or acetic acid aqueous solution or saline, soaked in vinegar or acetic acid aqueous solution, emulsified and before, during or after emulsification, collagen and / or albumin and further as required Moisture content characterized by spray-drying or freeze-drying raw oyster emulsion obtained by adding excipients and other auxiliary components under conditions where the surface temperature of the dry powder does not exceed 60 ° C Is a method for producing raw oyster powder having an excellent storage stability of 5% or less.   Fresh fresh oysters are thoroughly washed with vinegar or acetic acid aqueous solution or saline, soaked in vinegar or acetic acid aqueous solution, emulsified and before, during or after emulsification, excipients and other auxiliary ingredients as necessary The raw oyster emulsified liquid obtained by adding the lye is spray-dried or freeze-dried under the condition that the surface temperature of the dry powder does not exceed 60 ° C. A granulation machine with an auxiliary component is granulated, and in the granulation, an aqueous solution containing collagen and / or albumin is sprayed, thereby covering the formed granule with a film containing collagen and / or albumin. A method for producing dry granules of raw oysters with excellent storage stability.   The method according to claim 2 or 3, wherein the vinegar, acetic acid aqueous solution or saline used for washing contains 2 to 30% by weight of ethanol.   The method according to claim 2 or 3, wherein the vinegar or acetic acid aqueous solution used for the immersion contains 1 to 5% by weight of sodium chloride.