JP6050151B2 - Method for producing dry fillet for fillet - Google Patents

Description

  The present invention relates to a method for producing dried fins used for fillet, and more particularly to a method for producing dried blowfish fins for fillet baked by drying trough fin fins.

  The puffer fin (dried puffer fin) used for puffer fish is generally cut from a raw puffer fish (mainly trough pufferfish) from the dorsal fin, chest fin, tail fin, buttocks fin, and a wooden board (for example, 90 × 45 cm). Pasted on a plywood board, dried overnight (about 18 hours), then peeled off the dried blowfish fins from the board, placed on a frying pan or net, and baked moderately with a far-infrared electric heater, charcoal fire, or gas It is manufactured by the method of baking until it becomes colored.

  In addition, the drying method is the method of drying in the sun outdoors from the start to sunset, storing in the indoor (drying room) after sunset, and air-drying consistently from the start to the end (drying room). There is a method of air drying.

JP-A-11-113538 JP 11-46749 A JP 2003-138383 A

  In a conventional method using a plywood board, viable bacteria remain on the plywood board after use, and they propagate during the next use, which is very problematic in terms of food hygiene.

  Moreover, in the conventional method using a plywood board, since a manufacturing required time is very long (18 hours or more), only 1 set can be performed per day, and there exists a problem in terms of manufacturing efficiency.

  The present invention is intended to solve the above-described problems in the prior art, and provides a method for producing a dry fillet capable of producing delicious fillet in a sanitary manner in a short time. The purpose is to provide.

  The method for producing dried fins of the present invention sequentially performs an immersion step, a drying step, and a finishing step on a raw fish fin as a raw material. 7% by volume, trisodium citrate 2-6% by volume, water-soluble ionized mineral liquid 0.05 to 0.12% by volume, Ringer's solution containing metal ions as minerals, salt 1.1 to 1.5% by volume In a drying process, immerse the raw fin in a salt composition liquid consisting of 0.5 to 1.2% by volume of sugar and the remaining clean water, and on the perforated metal plate or wire mesh in the drying step, Line up the fins taken out from the salt composition solution, place them in a metal frame rack, dry them for at least 4 hours while blowing air, and use a heat source installed on the top and bottom sides of the fins in the finishing process. In addition, as a perforated metal plate or wire mesh used in the drying process, it is treated with treated water obtained by dissolving a metal ion-containing liquid containing one or more metal ions at a predetermined concentration. It is characterized by using one modified by the above.

  In the drying process, a cord connected at one end to a power source of 100 to 500 V is connected to a metal frame rack, and drying is performed while applying a voltage to a perforated metal plate or wire mesh on which fins are placed. It is preferable to carry out, and in the finishing process, a far-infrared electric heater is used as a heat source, a cord having one end connected to a power source of 70 to 130 V is connected to the guard wire mesh, and a low frequency of about 45 to 70 Hz. It is preferable to finish by burning the fin while applying the vibration voltage.

  According to the method for producing dried fins according to the present invention, it is possible to produce hygienic dried fins that are crispy and crispy and have no odor at all. In addition, dried fins produced by the method according to the present invention, when put in hot sake of Japanese sake, have good elution of soup stock containing amino acids, rich flavor, and can produce dark-colored fin sake. Further, compared with the conventional method, the required manufacturing time can be shortened to about 1 / 4.5, and the manufacturing efficiency can be remarkably improved.

FIG. 1 is a diagram showing an example of a perforated metal plate 1 (in a state where fins 2 are arranged) used in a drying process of a method for manufacturing a dry fin according to the present invention. FIG. 2 is a view showing an example of a state in which the perforated metal plate 1 on which the fins 2 are arranged is accommodated in a metal frame rack 3 in the drying step of the method for manufacturing a dry fin according to the present invention. FIG. 3 is a view showing an example of a state in which the fin 2 is placed on the grill net 5 and baked in the finishing step of the method for producing dry fins according to the present invention. FIG. 4 is a photograph (drawing substitute photograph) in which the fillet of Example 3 of the present invention and the fillet of Comparative Example 3 were photographed side by side.

  The dry fin manufacturing method according to the present invention includes three processing steps (an immersion step, a drying step, and a finishing step), and is performed by sequentially executing these steps. More specifically, first, a raw fish fin (back fin, chest fin, tail fin, buttocks fin) is dipped in a salt composition solution for a predetermined time in a dipping step, and then a salt composition solution in a drying step. The fins taken out from the metal are placed on a metal perforated plate (punching metal), air-dried while applying an electric potential, and finally dried as a finishing process. Baked to produce dried fins. Hereinafter, each step will be described in detail.

1. Immersion step A salt composition solution for dipping is prepared, and raw fins are immersed in this salt composition solution for 5 to 20 minutes. The salt composition liquid used here is a water-soluble ionized mineral liquid 0.05 to 0.12 consisting of Ringer's solution containing 3 to 7% by volume of sodium bicarbonate, 2 to 6% by volume of trisodium citrate, and metal ions as minerals. It is prepared as an aqueous solution consisting of volume%, salt content 1.1-1.5 volume%, sugar content 0.5-1.2 volume%, and the remaining clean water.

  The content of each component in the salt composition solution is preferably adjusted so that the salt composition solution has a substantially isotonic concentration with respect to the cell solution of the fin (fish) to be treated. Here, “substantially isotonic with respect to the cell fluid” means having an osmotic pressure ratio of 0.8 to 1.5 with respect to the cell fluid. A preferable osmotic pressure ratio is 0.9 to 1.1 with respect to the cell fluid. In addition, the cell fluids of animals including fish are classified into extracellular fluids and intracellular fluids, and the composition of both is characterized by different main cation components. The extracellular fluid is high sodium (Na), In contrast to low potassium (K), the intracellular fluid is low sodium (Na) and high potassium (K). On the other hand, the salt composition solution used in the present invention preferably has an extracellular fluid (high Na, low K) composition containing more sodium ions than potassium ions as a cation component.

Sodium bicarbonate (sodium bicarbonate: NaHCO ₃ ) dissolves in clean water to deprive hydrogen ions in the water to produce carbonic acid. Therefore, in the aqueous solution, a part of carbon dioxide (CO ₂ ) generated from this carbonic acid is It is dissolved with sodium ions and some hydroxide ions. A suitable concentration of sodium bicarbonate is 3 to 7% by volume, particularly preferably 4 to 6% by volume, in the aqueous solution. If the amount is less than 3% by volume, the effect of the dipping treatment is insufficient. If the amount exceeds 7% by volume, the sodium concentration becomes excessive, and the isotonicity of the salt composition liquid with respect to the cell liquid of the meat to be treated is in a suitable range. Since it deviates from, it is not preferable.

Trisodium citrate is a salt of the formula Na ₃ (C ₃ H ₅ O (COO) ₃ ) and is present in an aqueous solution within the concentration range of 2-6% by volume, preferably 3-5% by volume. An effective amount of iron citrate (ferric) is produced below. This iron citrate does not cause precipitation in an aqueous solution and works extremely effectively as an Fe absorber. In addition, citric acid has a buffering action that reduces the change in hydrogen ion concentration that occurs when an acid or base is added to an aqueous solution, and a buffering action against changes in metal ion activity and ligand concentration. Is also effective as a stabilizer for preventing deterioration of food.

The water-soluble ionized mineral liquid is a Ringer's solution containing a trace amount of metal ions as a mineral component, and preferably two or more metals selected from calcium, zinc, sodium, magnesium, manganese, iron, potassium, and copper. Those having a Ringer composition containing ions as minerals are used. In particular, when iron and copper are contained, it is effective for improving the fin flavor. A water-soluble ionized mineral liquid having a trace concentration range of 0.05 to 0.12% by volume in an aqueous solution is a salt composition solution for intracellular and extracellular fluids of fish, in which the contained metal ions are each antagonistic in the presence of dissolved CO _2. It acts as a catalyst that promotes the absorption capacity.

  As the water-soluble ionized mineral liquid, for example, a mineral supplement beverage such as Calmax Feθ (trade name, FLC Co., Ltd.) can be used. Calmax Feθ has a mineral content of 2200 mg of calcium, 560 mg of zinc, 510 mg of sodium, 450 mg of magnesium, 130 mg of manganese, 127 mg of iron, 1.1 mg of potassium, 1.3 g of protein, 0.1 g of lipid, 10.6 g of carbohydrate, and ash per 100 mL. It is commercially available as a Ringer composition health drink with a calorific value of 45 kcal containing 10.0 g and 89.7 g of water.

  The salt content is within a range of 1.1 to 1.5% by volume (preferably in order to adjust the osmotic pressure of the salt composition solution with respect to the cell fluid in order to maintain the isotonicity of the fish with respect to the cell fluid within a preferable range. 1.3% by volume) is added. As the salt content, it is preferable to use a natural salt such as sun salt having a relatively high mineral content. Moreover, although exclusive salt such as common salt and sodium chloride using ion exchange salt as a raw material can be used, since 99.5% or more of the composition is sodium chloride, for example, various minerals are contained. It is preferably used as a mineral-binding salt supplemented in the form of ions in water. These natural salts and mineral-binding salts can be used alone or as a mixture.

  Sugar is also added in the range of 0.5 to 1.2% by volume in order to adjust the osmotic pressure of the salt composition solution relative to the fish cell fluid. As this sugar, sucrose, trehalose, glucose, fructose, maltose, or these sugars are urine oxidized to form a sugar chain, and a divalent or higher-valent ionized mineral is bound to the terminal group. Various sugars such as chains can be used alone or as a mixture of two or more.

  As the clean water constituting the balance of the salt composition liquid, for example, purified tap water from which hypochlorite, microorganisms, various organic substances, and the like have been removed by filtration is preferably used. In addition, by generating fine bubbles (microbubbles) with a diameter of 50 μm or less in purified tap water as clean water, and further irradiating ultrasonic waves of several tens of KHz to give physical stimuli to these fine bubbles Nanobubble water (ultrafine bubble water) that can hold the generated nanobubbles for a long time can also be used.

2. 1. Drying step As shown in FIG. 1, a fin 2 taken out from the immersion liquid on a metal plate (a plate made of an aluminum alloy in this embodiment) (a perforated metal plate 1) having a large number of holes. Line up. Then, in the drying chamber whose room temperature is set to 55 to 66 ° C., as shown in FIG. 2, the perforated metal plate 1 in which the fins 2 are arranged is attached to the metal frame rack 3 (a plurality of perforated metal plates 1. From a fan (not shown) installed obliquely upward to the perforated metal plate 1 and fins 2 respectively. The fins 2 are dried (approximately 4 hours) while blowing air (obliquely downward) and applying wind.

  The perforated metal plate 1 is modified by treating with a treated water obtained by dissolving a metal ion-containing liquid containing one or more metal ions at a predetermined concentration, and the raw metal (in this embodiment) Is an aluminum alloy with added antibacterial properties and new heat conduction characteristics (characteristics that the temperature rises slowly during heating and is difficult to cool). As a method for adding antibacterial properties and new heat conduction characteristics to the perforated metal plate 1, it is preferable to apply a “metal material modification method” disclosed in Japanese Patent Application Laid-Open No. 2003-138383. For example, the perforated metal plate 1 is modified by the following methods (A) to (D).

(A) Prepare treated metal ion treated water with 5% concentration of metal ion-containing liquid (*) in purified water from which impurities are removed as much as possible by filtering tap water through a reverse osmosis membrane. A method in which the perforated metal plate 1 is heated at about 260 ° C. for 5 minutes by heating means and then immersed in normal temperature metal ion-treated water in a container for a predetermined time.

(B) A metal ion-containing liquid (*) obtained by dissociating the same metal ions into purified water from which impurities have been removed with a reverse osmosis membrane as much as possible in a container different from the container containing metal ion-treated water (0.1) After preparing the second metal ion treated water at room temperature adjusted by dissolving at the% concentration, the perforated metal plate 1 is immersed in the metal ion treated water, and is then immersed in the second metal ion treated water. Method.

(C) Prepare treated metal ion-treated water in which the metal ion-containing liquid (*) is dissolved at a concentration of 15% in purified water from which impurities are removed as much as possible by filtering tap water through a reverse osmosis membrane. The method of heating this to 100 degreeC with a heating apparatus, and immersing the perforated metal plate 1 of normal temperature in this metal ion processing water of 100 degreeC.

(D) The second metal ion in which the metal ion-containing liquid (*) is set to a concentration of 0.5% and lower than the metal ion-treated water (for example, 25 ° C.) separately from the metal ion-treated water. A method in which treated water is prepared and the perforated metal plate 1 is dipped in the metal ion treated water and then dipped in the second metal ion treated water.

  In the methods (A) to (D), the “metal ion-containing liquid” (*) is a mineral substance containing a metal element such as Ag, Cu, Ni, Cr, K, Mg, Na, or the like. After refining as much as possible by an appropriate means, this refined mineral substance and an organic acid solution having an alkyl group such as citric acid or acetic acid are mixed with an electrostatic magnetic field, an electron discharge field, an ultrasonic wave, a rotating water flow field, a low frequency, etc. In the vessel equipped with the above, the metal elements (Ag, Cu, Ni, Cr, K, Mg, Na) are introduced into the organic acid solution by using means such as far-infrared irradiation at the time of mixing and stirring. It means what was electrolyzed (dissociated) about 1% to 4% as ions.

  Further, while the fin is placed on the perforated metal plate 1 and dried, a potential is applied to the perforated metal plate 1. Specifically, the cord 4 having one end connected to a power source (not shown) of 100 to 500 V (preferably 360 V) is connected to a metal frame rack 3 holding a plurality of perforated metal plates 1. Apply voltage. When drying is performed while applying an electric potential to the perforated metal plate 1 in this manner, the heat absorbability of the perforated metal plate 1 is improved and the drying time can be shortened.

  In this embodiment, a perforated plate made of an aluminum alloy is used as a member for placing and arranging the fins taken out of the immersion liquid, but is not limited to those made of an aluminum alloy. A perforated plate formed of another metal (for example, stainless steel) can also be used. Also, a wire mesh can be used instead of the perforated plate. However, in any case, it is preferable to perform a modification treatment for adding antibacterial properties and new heat conduction characteristics to the raw material metal by the method described above.

3. Finishing process As shown in FIG. 3, the fin 2 dried in the drying process is placed on the grill net 5, and the far-infrared electric heaters 6 and 6 installed in the upper and lower stages are used to form the upper and lower surfaces of the fin 2. At the same time, bake for about 5 minutes and finish with a good color. In addition, while baking the fin 2, the cords 8 and 8 having one end connected to a power source (not shown) of 70 to 130 V are connected to the guard wire nets 7 and 7 of the far infrared electric heaters 6 and 6, respectively. A low-frequency oscillation voltage (AC or DC pulsation voltage) of about 70 Hz is applied. Then, the oxidation-reduction reaction is activated in the fin 2 and can be baked while suppressing the oxidation of the fin 2 itself. In addition, by improving the heat conduction, it is possible to produce grilled fins that are baked from the core and crispy and crispy. Furthermore, although the conventional method could not produce a “puffer fin that does not have a raw odor”, according to the method of the present invention, a baked fin having no raw odor can be produced. Moreover, the fin processed food as a snack can also be manufactured by seasoning with a salt, soy sauce, sesame, etc. to the fin of this state (baked fin of the state baked and finished).

  By carrying out the method as described above, it is possible to sanitarily produce fragrant dried fins that are crisp and crispy and have no odor, and the produced dried fins are used in hot sake of sake. When it is added, the elution of the soup stock containing amino acids is good, the flavor is rich, and a dark-colored fillet can be made. Further, in the conventional method, the manufacturing time takes about 18 hours, whereas in the case of the method according to the present invention, the manufacturing can be performed in about 4 hours, and the manufacturing efficiency can be remarkably improved.

  Here, the various test results performed with respect to the dried blowfish fin (and comparative example) manufactured by the “method for manufacturing dried fin” according to the present invention will be described as Examples 1 to 3 of the present invention. In any of the examples, the same composition was used as the salt composition solution used in the fin dipping process. More specifically, sodium hydrogen carbonate 5.0%, trisodium citrate 4.0% by volume, Calmax Feθ (trade name, FLC Co., Ltd.) 0.1% by volume as a water-soluble ionized mineral liquid, An aqueous solution comprising 1.3% by volume of sun salt as a salt, 1.0% by volume of trehalose as a sugar, and the remaining clean water was used.

  As Example 1 of the present invention, the number of general viable bacteria in the raw material (pufferfish in a raw state) is measured, and then the raw material is processed by the method according to the present invention to produce a dried pufferfish (product). The viable cell count was measured by the standard plate count method, and the reduction rate was calculated. Further, as Comparative Example 1, the number of viable bacteria in the raw material was measured, and then the raw material was processed by a conventional method (sun-dried) using a plywood board to produce a dried blowfish fin (product). The number of bacteria was measured in the same manner, and the reduction rate was calculated. The results are shown in the following table.

At the time of raw material After commercialization (Reduction rate)
Example 1: 13410 → 975 (92.7%)
Comparative Example 1: 5120 → 2280 (55.5%)

  From the above test results, according to the method according to the present invention, it is possible to greatly reduce the number of general viable bacteria in the produced dried blowfish fillet compared with the raw material, and to expect a great effect in terms of hygiene. It was confirmed that the effect was remarkable as compared with the conventional method (Comparative Example 1).

  As Example 2 of the present invention, the moisture content in the raw material (puffer fin in the raw state) is measured, and then the immersion step and the drying step (4 hours) in the method according to the present invention are performed on the raw material, The water content was measured. Moreover, as Comparative Example 2, the moisture content was measured by carrying out a drying step (18 hours) in a conventional method (sun drying) using plywood on the raw material having the same condition. The results are shown in the following table.

From the above test results, it was confirmed that the method according to the present invention (dipping step and drying step) can be dried to a very low moisture content, and the effect is the same as that of the conventional method (Comparative Example 2). It was found that this was remarkable.

As Example 3 of the present invention, while making fin wine using the dried blowfish fin produced by the method according to the present invention, as a comparative example 3, dried blowfish fillet produced by the conventional method using a plywood board (sun-dried) It was used to make fillet, and a sensory test was conducted by 13 panelists. For each fillet, four dried blowfish fillets were added to each cup, poured into Japanese sake (Daiginjo) warmed to 90-95 ° C., turned on and immediately turned off. In the sensory test, each panelist tasted A “Example 3 fillet” and B “Compare example 3 fillet” in order, with all information such as manufacturing methods kept secret. In response to the following five questions, we selected and answered the appropriate person.
Question 1: Those who have a good fragrance Question 2: Those who do not have a foul odor Question 3: Those who have a good taste Question 4: Those who have good crisp fins Question 5: Those who like in general

The results are shown in the following table.
As shown in the above test results, for most items, A “Example 3 fillet” has higher evaluation than B “Compare 3 fillet”, and the method according to the present invention has superiority. confirmed.

  Further, a small amount of each of the sake of Example 3 and that of Comparative Example 3 was placed in a beaker, and the colors were compared. As a result, as shown in FIG. 4 (drawing substitute photo), it was confirmed that the sake of Example 3 had a darker color than that of Comparative Example 3, and more soup was eluted. It was.

1: perforated metal plate,
2: Fin,
3: Frame rack,
4: code,
5: grill
6: Far-infrared electric heater,
7: Guard wire mesh,
8: Code

Claims (3)

A method for producing dried fins that sequentially executes a dipping process, a drying process, and a finishing process on a raw fish fin as a raw material,
In the dipping process, sodium bicarbonate 3-7 vol%, trisodium citrate 2-6 vol%, water-soluble ionized mineral solution 0.05 to 0.12 vol% consisting of Ringer's solution containing metal ions as mineral, salinity 1.1-1.5 vol%, sugar content 0.5-1.2 vol%, and the raw state fins are immersed in a salt composition solution consisting of the remaining clean water for 5-20 minutes,
In the drying process, on the perforated metal plate or wire mesh, the fins taken out from the salt composition liquid are arranged, housed in a metal frame rack, and dried for at least 4 hours while blowing air,
In the finishing process, it is characterized by baking both the upper and lower sides of the fin with heat sources installed at the top and bottom,
Furthermore, as a perforated metal plate or wire mesh used in the drying process, a modified one by treating with a treated water obtained by dissolving a metal ion-containing liquid containing one or more metal ions at a predetermined concentration is used. A method for producing a dry fin characterized by comprising:   In the drying process, a cord connected at one end to a power source of 100 to 500 V is connected to a metal frame rack, and drying is performed while applying a voltage to a perforated metal plate or wire mesh on which fins are placed. The manufacturing method of the dry fin of Claim 1 characterized by these.   In the finishing process, a far-infrared electric heater is used as a heat source, a cord having one end connected to a power source of 70 to 130 V is connected to the guard wire mesh, and fins are applied while applying a low frequency vibration voltage of about 45 to 70 Hz. The method for producing a dry fin according to claim 1, wherein the finish is baked and finished.