KR20200122767A - Manufacturing method for ice pack gel using paste agar and diatomite and ice pack gel manufactured by the same - Google Patents

Abstract

The present invention relates to a method for manufacturing an ice pack gel using agar and diatomaceous earth, and an ice pack gel obtained thereby. The method for manufacturing an ice pack gel using agar and diatomaceous earth includes: preparing diatomaceous earth, agar and water; mixing the thus prepared diatomaceous earth, agar and water; heating the resultant mixture of diatomaceous earth, agar and water; and cooling the heated mixture, wherein diatomaceous earth powder having a particle diameter of 100-1000 micrometers is used as the diatomaceous earth. According to the method, an eco-friendly ice pack gel is obtained by using agar and diatomaceous earth. The ice pack gel has a reinforced cold-keeping effect to allow maintenance of foods, beverages, or the like, in a low-temperature state for a long time. In addition, even in the case of a long-distance delivery, the ice pack gel can retain the freshness of foods, beverages, or the like, for a long time.

Description

TECHNICAL FIELD The manufacturing method of ice pack gel using agar and diatomaceous earth, and ice pack gel manufactured thereby TECHNICAL FIELD [MANUFACTURING METHOD FOR ICE PACK GEL USING PASTE AGAR AND DIATOMITE AND ICE PACK GEL MANUFACTURED BY THE SAME}

The present invention relates to a method of manufacturing an ice pack gel using agar and diatomaceous earth, and to an ice pack gel manufactured thereby, and more particularly, by manufacturing an eco-friendly ice pack gel using agar and diatomaceous earth, food, beverages by enhancing the cooling effect The present invention relates to a method of manufacturing an ice pack gel using agar and diatomaceous earth, which can keep the etc. at a low temperature for a long time and maintain the freshness of food, beverages, etc. for a long time even in the case of long-distance delivery, and an ice pack gel manufactured thereby.

With the recent development of the transportation industry, it has become possible to transport food products that require fast delivery from existing cargoes that do not have a shelf life. Since foods quickly decay when exposed to room temperature, they must be kept at low temperatures to maintain freshness.

Therefore, when transporting food, a separate means of freezing and refrigerating storage is required for the transport means. However, when transporting a small amount of food individually, not in the case of transporting a large amount of ingredients, frozen food, etc., inside the box containing the food. Add dry ice or ice pack to prevent spoilage of food.

This dry ice refers to a coolant made of solid carbon dioxide by compressing gaseous carbon dioxide. This dry ice cannot be easily obtained because it requires a separate manufacturing process. When the temperature is -78℃, it is frostbite when touched with bare hands. You may wear it, so be careful with handling and storage. In addition, it is a one-time coolant that sublimates and disappears unless it is stored below -78℃, so its efficiency is low.

On the other hand, the ice pack contains a refrigerant with high specific heat inside, and by mixing the refrigerant with water and then freezing it, it is possible to keep the surroundings at a low temperature through the endothermic action of the ice pack. These ice packs are widely used because they are easy to handle and store, unlike dry ice, and can be used semi-permanently.

Since ice packs other than the required quantity occupy space inside the refrigerator, they need to be disposed of, but if ammonium nitrate or ammonium chloride is a refrigerant, the ammonium nitrate and ammonium chloride are harmful substances, so disposal is not easy. When using a super absorbent polymer made of an eco-friendly material as a refrigerant, it maintains a gel form combined with water, so it is discarded by the user by spilling it into the sewer pipe, but this can block the sewer pipe or pollute the water quality environment. Side effects occur together.

Domestic registered patent No. 10-1032219 (registered on April 22, 2011) Korean Patent Publication No. 10-2003-0075683 (published on September 26, 2003) Domestic registered patent No. 10-1919612 (registered on November 12, 2018)

In the present invention, by manufacturing an eco-friendly ice pack gel using agar and diatomaceous earth, the cooling effect can be strengthened to keep food and beverages at low temperatures for a long time, and even in the case of long-distance delivery, the freshness of food and beverages can be maintained for a long time. It is to provide a method of manufacturing an ice pack gel using agar and diatomaceous earth, and an ice pack gel manufactured thereby.

Various problems to be solved by the present invention are not limited to the problems mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

In the method for producing an ice pack gel using agar and diatomaceous earth according to the present invention, diatomaceous earth, agar and water are prepared, the prepared diatomaceous earth, agar and water are mixed and mixed, and the mixture of the diatomaceous earth, agar and water is heated, It is prepared by cooling the heated mixture, and the diatomaceous earth powder having a particle diameter of 100 to 1000 μm is used.

The prepared diatomaceous earth, agar and water are mixed in a weight ratio of 5 to 15 parts by weight of diatomaceous earth, 50 to 70 parts by weight of agar and 30 to 50 parts by weight of water, respectively, and heating of the mixture of the mixed diatomaceous earth, agar and water is It is carried out by heating a mixture of diatomaceous earth, agar and water at a temperature of 80 to 90°C for 20 to 40 minutes, and cooling the heated mixture of diatomaceous earth, agar and water is allowed to stand at a temperature of 5 to 10°C for 1 to 3 hours. Can proceed.

In addition, the present invention includes an ice pack gel using agar and diatomaceous earth prepared by the above manufacturing method.

Details of other embodiments are included in the detailed description.

The method of manufacturing an ice pack gel using agar and diatomaceous earth according to the present invention is a method of manufacturing an eco-friendly ice pack gel using agar and diatomaceous earth, thereby enhancing the cooling effect to keep food and beverages at a low temperature for a long time. Even in the case, an ice pack gel that can maintain the freshness of food and beverages for a long time can be manufactured.

It will be fully understood that the embodiments of the technical idea of the present invention can provide various effects not specifically mentioned.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

Unless otherwise defined, all terms including technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

Hereinafter, a method of manufacturing an ice pack gel using agar and diatomaceous earth according to the present invention will be described in detail with reference to a preferred embodiment.

In order to prepare an ice pack gel using agar and diatomaceous earth according to the present invention, first, diatomaceous earth, agar, and water may be prepared.

The diatomite is a sedimentary rock that fossilized only the silicate part because diatoms, a kind of phytoplankton, accumulate in the sea or under the lake for 8-10 million years, and have the power to adsorb and decompose harmful substances. As phytoplankton dies, they emit tiny air bubbles. Because of these small bubbles, the diatomite rock accumulated for millions of years creates pores up to 5,000 times that of activated carbon (charcoal), and these micropores filter contaminated particles.In this sense, if charcoal is a porous material, diatomaceous earth is ultra-porous. It is called a sieve. The micropores of diatomaceous earth exert effects such as maintaining humidity and removing odors. The surface area is large and the density is small, so it has excellent thermal insulation and fire resistance.

In the present invention, as the diatomaceous earth, diatomaceous earth manufactured by the following manufacturing method may be used.

First, after preparing diatomaceous earth, the diatomaceous earth may be pulverized to prepare diatomaceous earth powder.

The pulverization of the diatomaceous earth is carried out using a pulverizer such as a pin mill, a hammer mill, a screw mill, a roll mill, a disc mill, or a jog mill. It can be pulverized into a powder having a particle diameter of 100 to 1000 μm. However, if the particle diameter of the pulverized diatomaceous earth is pulverized to less than 100 μm, the particle size is too small, making workability difficult and dust generation may occur. If the pulverization exceeds 1000 μm, the particle size is too large, and the dispersibility may be poor.

Next, the diatomaceous earth powder can be fired.

The sintering of the diatomaceous earth powder may be carried out by heating the diatomaceous earth powder after putting it into a sintering furnace, and the sintering of the diatomaceous earth powder may remove contaminants adsorbed in the fine pores of the diatomaceous earth powder and activate the diatomaceous earth powder.

The sintering of the diatomaceous earth powder may be performed by adding the prepared diatomaceous earth to a sintering furnace and then heating at a temperature of 800 to 1000°C for 1 to 5 hours.

Next, after the fired diatomaceous earth powder is added to water, the fired diatomaceous earth powder may be cooled. The cooling of the calcined diatomaceous earth powder may be performed by immersing the calcined diatomaceous earth powder in water at 20 to 30° C. for 10 to 60 minutes.By passing through the cooling process, dust or fine powder contained in the calcined diatomaceous earth powder And enhance the surface strength of the calcined diatomaceous earth powder.

Subsequently, the cooled diatomaceous earth powder may be dried.

The drying of the diatomaceous earth powder is a step of removing moisture contained in the micropores of the diatomaceous earth powder, and the drying of the diatomaceous earth powder may be performed by leaving the diatomaceous earth powder at a temperature of 40 to 50°C.

Next, the surface of the diatomaceous earth powder may be coated using a coating solution.

The coating solution is coated on the surface of the diatomaceous earth powder, thereby remarkably improving physical properties such as coating strength and weather resistance on the surface of the diatomaceous earth powder.The coating solution is mixed with an epoxy composition in a certain weight ratio, and then It can be formed by applying the coating solution to.

The coating solution may be prepared by including a self-emulsifying epoxy resin, an acrylic modified polyester resin, a pigment, a silica, and a curing agent, and the epoxy composition includes 50 to 70 parts by weight of a self-emulsifying epoxy resin, and 10 to an acrylic modified polyester resin. 20 parts by weight of a filler, 5 to 10 parts by weight of a filler, 1 to 5 parts by weight of a pore formation accelerator, and 5 to 10 parts by weight of a curing agent may be mixed and mixed.

The self-emulsifying epoxy resin is an epoxy resin having an active group that can be emulsified in itself, and the self-emulsifying epoxy resin is a self-emulsifying modified epoxy resin having an epoxy equivalent of 200 to 230 g/eq. Physical properties such as strength and weather resistance can be remarkably improved.

The self-emulsifying epoxy resin is used in an amount of 50 to 70 parts by weight, and when the self-emulsifying epoxy resin is included in an amount of less than 50 parts by weight, adhesion to the surface of diatomaceous earth may be reduced, and when it is included in an amount exceeding 70 parts by weight There may be a problem that the drying property is delayed.

The acrylic-modified polyester resin is condensed and polymerized with a polybasic acid containing 40 to 50% by weight of anhydrous acid and 50 to 60% by weight of an aliphatic acid by condensation polymerization of a polyhydric alcohol containing 80 to 90% by weight of a diol and 10 to 20% by weight of a triol. To prepare a polyester resin having a value of 45 to 65 mgKOH/g, an acid value of 3 mgKOH/g or less, a glass transition temperature of 5 to 20°C, and a weight average molecular weight (Mw) of 2,500 to 3,500, and the polyester resin 50 to 60 weight % And 40-50% by weight of acrylic monomer are grafted to have a weight average molecular weight (Mw) of 5,000 to 7,000, a hydroxyl value of 50 to 60 mgKOH/g, an acid value of 3 mgKOH/g or less, and a glass transition temperature of 10 to 20°C A range of acrylic modified polyester resins can be used.

The filler is added to improve the thermal and physical strength of the diatomaceous earth powder, prevent wear and tear, and improve corrosion resistance and weather resistance.For example, the filler includes calcium carbonate, clay, talc, magnesium silicate. , Kaolin, mica, silica, and any one or more materials selected from the group consisting of aluminum silicate may be used.

The pore-forming accelerator is used to promote the formation of pores on the surface of the diatomaceous earth powder, and the pore-forming accelerator includes polyvinylpyrrolidone and benzoic acid in a weight ratio of 1:1 to 1:1.2. It can be mixed and used.

The curing agent is included in the coating solution and performs a function of curing the coating of the diatomaceous earth powder, and the curing agent may be used by mixing a curing agent resin and a curing accelerator.

Modified aliphatic polyamine may be used as the curing agent resin, and 2,4,6-tridimethylaminomethyl phenol may be used as the curing accelerator, and the curing agent resin and the curing accelerator are 10 to 20 parts by weight of the curing agent resin, respectively And 1 to 3 parts by weight of the curing accelerator may be mixed and used.

Next, the coating solution to which the coating solution is applied may be dried to prepare diatomaceous earth on which the coating layer is formed, and the drying of the coating solution may be performed by drying the diatomaceous earth to which the coating solution is applied at a temperature of 20 to 30°C.

The agar is a type of viscous complex polysaccharide that is difficult to be decomposed by digestive enzymes, and is mainly contained in red algae such as Gelidium and Gracilaria, and is about 70% agarose and about 30% agar. It consists of pectin. Agar has excellent physical properties such as water retention, coagulation, and viscoelasticity, so it is used in various fields. In the food industry, it is used in dairy products, jellies, jams, and Japanese sweets, and is also used in the manufacture of pharmaceuticals and cosmetics, and its uses are mainly gelling agents, stabilizers, thickeners, clarifiers, and discoloration inhibitors. In the present invention, a commercially known agar may be used as the agar.

The water may be used to mix the diatomaceous earth and agar, and the water may be used as a deep ocean water solution to lower the freezing point of ice pack gels prepared including diatomaceous earth and agar and enhance the cooling effect.

The deep ocean water solution may be a deep ocean water solution having a salinity of 17 to 19% prepared by the following manufacturing method.

First, deep ocean water can be prepared, and the deep ocean water is called deep ocean water, which is usually less than 200 m, and unlike surface water, plankton and living organisms proliferate because sunlight does not reach. Because the concentration of nutrients is high, there is no contaminant present in the surface seawater because it is not mixed with the surface seawater due to the difference in density depending on the water temperature, and when compared with the surface seawater, low temperature stability, pollutants, harmful bacteria and organic matter are very high. Low cleanliness, eutrophication rich in inorganic nutrients, which are very important for plant growth, and mineral balance properties in which various mineral components exist in a good balance, and clusters of water molecules become small clusters for a long time under high pressure and low temperature conditions. As a result, it has characteristics such as aging matured with water with low surface tension and good permeability.

In particular, salt containing a large amount of minerals produced in deep ocean water contains a variety of minerals such as calcium (Ca), magnesium (Mg), iron (Fe), and zinc (Zn), which are necessary for the growth of salt-philic fermented microorganisms. It contains high concentration of nutrients such as nitrate, phosphate, silicate, and does not contain contaminants due to the difference in density from contaminated surface seawater. There is this.

Next, moisture in the deep ocean water may be evaporated.

The evaporation of water in the deep ocean water may proceed until 5/5 to 3/5 of the mass of the first deep ocean water is evaporated by naturally drying the deep ocean water by leaving it at a temperature of 20 to 35°C. By evaporating the moisture contained in the water, cost can be reduced and the salinity of the deep ocean water can be easily increased.

Next, the deep ocean water from which the moisture has been evaporated may be frozen and crystallized.

In the above step, after the deep ocean water from which the moisture has been evaporated is introduced into the freezing and concentrating device, the temperature of the freezing and concentrating device is lowered to freeze the temperature of the deep ocean water to form an ice crystal.

In the above step, as the temperature of the freezing and concentrating device is lowered, the deep ocean water contained in the freezing and concentrating device may be partially frozen, and the deep ocean water contained in the freezing and concentrating device is in direct contact with the interior of the freezing and concentrating device. A pure water component may be frozen around a crystal nucleus formed in the outer circumferential surface or the deep ocean water to form large ice crystals.

In the above step, the internal temperature of the cryoconcentrator in which the deep ocean water is accommodated is maintained at a temperature of -12 to -10°C for 10 to 20 hours, and until 10 to 20% by weight of the initial weight of the filtered seawater is frozen. Can proceed.

Subsequently, ice crystals formed in the frozen deep ocean water may be removed.

In the above step, by removing the ice crystal in which the pure water (solvent) component is frozen, deep ocean water with a high salt concentration can be prepared.

Next, after re-injecting the deep ocean water from which the ice crystals have been removed into the freezing concentrator, the temperature of the freezing concentrating device is lowered to refreeze the deep ocean water from which the ice crystals have been removed, thereby recrystallization to form ice crystals. .

In the above step, the internal temperature of the freezing and concentrating device in which the deep ocean water from which the ice crystals have been removed is maintained at a temperature of -15 to -13°C for 10 to 30 hours, and the deep ocean water from which the ice crystals have been removed may be re-frozen.

In the above step, as the temperature of the freezing and concentrating device is lowered, the deep ocean water accommodated in the freezing and concentrating device may be partially frozen once again. The deep ocean water accommodated in the freezing and concentrating device is A pure water component may be frozen around an outer peripheral surface in direct contact or a crystal nucleus formed in the deep ocean water to form an ice crystal having large particles.

Then, by separating and removing the re-frozen and recrystallized ice crystal, a high salinity deep ocean water solution can be prepared.

In the above step, a high salinity deep ocean water solution can be prepared by removing ice crystals from the recrystallized deep ocean water once again.In the present invention, the salinity of the deep ocean water solution is formed to 17 to 19% through the same process as described above. can do.

Next, the prepared diatomaceous earth, agar, and water may be mixed and mixed.

The prepared diatomaceous earth, agar and water may be mixed in a weight ratio of 5 to 15 parts by weight of diatomaceous earth, 50 to 70 parts by weight of agar, and 30 to 50 parts by weight of water, respectively.

Next, by heating the mixture of the mixed diatomaceous earth, agar and water, the diatomaceous earth, agar and water may be mixed and uniformly dispersed.

In the above step, the heating may be performed by heating the blended diatomaceous earth, agar, and water mixture at a temperature of 80 to 90° C. for 20 to 40 minutes.

Then, by cooling the heated mixture, a gel-like ice pack gel may be prepared.

In the above step, the cooling may be performed by allowing the heated mixture of diatomaceous earth, agar and water to stand at a temperature of 5 to 10° C. for 1 to 3 hours.

Hereinafter, a preferred embodiment of a method of manufacturing an ice pack gel using agar and diatomaceous earth according to the technical idea of the present invention will be described in more detail.

<Example 1>

First, after preparing diatomaceous earth, agar, and water, the prepared diatomaceous earth, agar, and water were mixed in a weight ratio of 10 parts by weight of diatomaceous earth, 60 parts by weight of agar and 40 parts by weight of water, respectively.

Next, the mixture of diatomaceous earth, agar and water is heated at a temperature of 85 to 86°C for 30 minutes, and then the heated mixture of diatomaceous earth, agar and water is left to stand at a temperature of 7 to 8°C for 2 hours. The gel was prepared.

<Example 2>

An ice pack gel was prepared in a similar manner to Example 1, but in Example 2, an ice pack gel was prepared using a deep ocean water solution instead of water.

<Comparative Example 1>

An ice pack gel was prepared in a similar manner to Example 1, but in Comparative Example 1, an ice pack gel was prepared without using diatomaceous earth.

<Comparative Example 2>

An ice pack gel was prepared in a manner similar to that of Example 1, but in Comparative Example 2, it was mixed in a weight ratio of 10 parts by weight of diatomaceous earth, 20 parts by weight of agar, and 40 parts by weight of water.

1. ISSPAK gel property evaluation experiment

For the ice pack gels prepared according to the Examples and Comparative Examples, whether or not sediment was generated with time, the degree of freezing point drop, and the cooling effect were tested, and the results are shown in Table 1 below.

In the above experiment, whether or not sediment occurred according to the passage of time was observed by 6-handedly after the Ice Pal gels of Examples 1 and 2 and Comparative Examples 1 and 2 were allowed to stand for 12 hours. At this time, when a precipitate has occurred, it is indicated by'○', and when a precipitate does not occur, it is indicated by'x'.

In addition, the degree of freezing point drop in the above experiment was evaluated by measuring the temperature after freezing the ice pack gels of Examples 1 and 2 and Comparative Examples 1 and 2 in a freezer.

In addition, the cooling effect in the above experiment was evaluated by measuring the time taken to reach 5°C after each ice pack gel tested for the degree of freezing point drop was left in an unclosed room at 25°C.

division Whether sediment occurs freezing point 5℃ Required time (minutes) Example 1 X -8℃ 520 Example 2 X -10℃ 550 Comparative Example 1 X -2℃ 230 Comparative Example 2 X -4℃ 300

Referring to [Table 1], the ice pack gels according to Examples 1 and 2 and Comparative Examples 1 and 2 did not generate precipitates, and the ice pack gels according to Examples 1 and 2 were the ice pack gels according to Comparative Examples 1 and 2 Compared to that, it was confirmed that the degree of strengthening of the freezing point and the cooling effect were excellent.

2. Product preservation test

In order to determine the preservation state of food over time, frozen dumplings were put in the state of putting the ice pack gels according to Examples 1 and 2 and Comparative Examples 1 and 2 respectively in three 350 × 500 × 120 mm styrofoam boxes. Then, it was packaged and left at room temperature.

In order to test the product preservation condition, the temperature in the styrofoam box after 10, 20 and 35 hours elapsed was measured, and the condition of the frozen dumplings after 35 hours elapsed was visually confirmed.

At this time, the frozen dumplings were evaluated as'○' in the case of good preservation, and'x' in the case of poor, and the results are shown in Table 2 below.

division Temperature(℃) Product preservation status freezing point 10 hours 20 hours 35 hours Example 1 -8 -6 -4 -One O Example 2 -10 -8 -6 -3 O Comparative Example 1 -2 One 7 13 X Comparative Example 2 -4 -One 3 10 X

Referring to [Table 2], it can be seen that the frozen dumplings containing the ice pack gel according to Examples 1 and 2 are better than the frozen dumplings containing the ice pack gel according to Comparative Examples 1 and 2.

Accordingly, it was confirmed that the ice pack gel according to Examples 1 and 2 not only lowers the freezing point but also has an excellent cooling effect.

In the above, a preferred embodiment of the present invention has been described, but those of ordinary skill in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features I will be able to. Therefore, it should be understood that the exemplary embodiment described above is illustrative in all respects and is not limiting.

Claims (3)

Prepare diatomaceous earth, agar and water,
The prepared diatomaceous earth, agar and water are mixed and mixed,
Heating the mixture of the combined diatomaceous earth, agar and water,
Prepared by cooling the heated mixture,
The diatomaceous earth is a method of manufacturing an ice pack gel using agar and diatomaceous earth, characterized in that diatomaceous earth powder having a particle diameter of 100 to 1000 μm is used.
The method of claim 1,
The prepared diatomaceous earth, agar and water are mixed in a weight ratio of 5 to 15 parts by weight of diatomaceous earth, 50 to 70 parts by weight of agar and 30 to 50 parts by weight of water,
The heating of the mixture of the mixed diatomaceous earth, agar and water is performed by heating the mixture of the mixed diatomaceous earth, agar and water at a temperature of 80 to 90°C for 20 to 40 minutes,
The cooling of the heated diatomaceous earth, agar and water mixture is carried out by leaving for 1 to 3 hours at a temperature of 5 to 10 ℃ method of producing an ice pack gel using agar and diatomaceous earth.
An ice pack gel using agar and diatomaceous earth, characterized in that prepared by the method of any one of claims 1 or 2.