KR102375976B1 - Preparation method of powder for clay formation using citrus fruits - Google Patents

Abstract

Disclosed are a method for preparing powder for forming citric clay, and a method for preparing a molded article of citric clay using the powder for forming clay. According to the preparation method of the present invention, it is possible to produce clay excellent in color and moldability of citrus. The method for preparing powder for forming citric clay includes a step of drying powder from citrus and a step of mixing the dry powder and a combining agent selected from a group including HPC, carboxymethylcellulose sodium, pregelatinized starch, xanthan gum, PVP, gelatin, and starch.

Description

Preparation method of powder for clay formation using citrus fruits

The following examples relate to a method of manufacturing a powder for forming clay using citrus fruits, and a method for manufacturing a molded article using the powder for forming a clay.

The peels of citrus fruits generated after processing of citrus fruits, a representative product of Jeju Island, are used as animal feed through simple drying, and the reality is that most of the generated citrus is treated as marine waste. In 2008 alone, 23,075 tons were dumped into the sea, and the cost was 2 billion won.

Since some of the extracted physiologically active substances are also high-molecular polysaccharides, it is possible to develop natural dyes through fermentation. The physiologically active substances of citrus peels inhibit the breakdown of fat and cholesterol in the intestine and have anticancer action, so they are also used as herbal medicines. The citrus tree is a perennial evergreen fruit belonging to the Unhyangaceae family, and it is a generic term for varieties derived from three genera: Citrus, oleifera, and tangerine. Its origin is the eastern Himalayas and Assam regions, and the upper Yangtze River region of China. It is said that it was cultivated in Korea for a long time, and it is recorded that tangerines were imported from Samhan in the Japanese Yasa, “Higoguksa”, and in the “Koryo Sase”, the amount of tangerines offered as a tribute from Tamna in 1052 (the 6th year of King Munjong of Goryeo) is recorded. They said it would increase to 100. Since Korea is the northernmost of the world's citrus plantations, the cultivar was introduced from Japan in 1911 with Onju tangerine, a citrus that tolerates cold well, and constitutes the main species. In the early 1960s, only a part of Jeju Island, centered on Seogwipo, was known as the only citrus producing area in Korea. However, as a result of many experimental cultivations, recently, some citrus fruits were also grown in Jeju Island at an altitude of 200 m or less and in Tongyeong, Goheung, and Wando in the southern regions. is becoming

The rinds of citrus fruits account for 20-50% of all fruits. The outer side (outer side) of the pericarp is a flavedo layer, with a developed pigment layer, and the main components are essential oil components of about 1%, aldehyde, alcohol, ester, and ketone. And the inner layer is called albedo layer and contains cellulose, sugar, lignin, pentosan and pectin. The pigment of the citrus peel is the developed plastid among the cells of the tissue forming the flavedo layer, so chlorophyll and carotinoid pigment exist together before the fruits ripen, but as the maturation progresses, the chlorophyll is destroyed and gradually disappears, and the pigment covering it appears on the surface, and it takes on the unique color of the type and variety. Among these pigments, α, β, γ carotene belonging to the carotinoid family (beta is the most among them), and xanthophyll, anthocyan anthocyan, flavon flavathannin, tangelethine, etc. will appear red.

Although the production of tangerines is high, the rind, which accounts for about 25% of the total fruit, is produced as a by-product. Some of them are being used as herbal medicines and feed, but most of them are thrown away as waste. According to Patent Registration No. 10-2034383, a method for manufacturing a pulp mold using orange peel and a pulp mold manufactured by the manufacturing method are disclosed. However, no attempt has been made to make a powder for forming clay and a compact thereof using citrus fruits. By using the pigment contained in the peel, the peels that are discarded as by-products of the processing process and the peels that are discarded after eating the flesh for reproductive use are collected and used as a powder for clay formation using citrus fruits. There will be a lot of potential to use it.

Examples provide a powder for forming clay using citrus fruits for producing clay having excellent aesthetics and formability. In addition, there is provided a method for manufacturing a molded article using the powder for forming clay.

As one aspect for solving the above problem, the present application,

A citrus peel drying step of naturally drying the citrus peel to have moisture of 10% or less;

pulverizing the dried skins using a pulverizer and then pulverizing to obtain fine powder and residual solids;

an extract obtained step of concentrating the ethanol extract of the remaining solid content under reduced pressure and freeze-drying;

a drying step of mixing the fine powder and the extract and drying the powder at a temperature of 76 to 84°C;

Hydroxypropyl cellulose (HPC), carboxymethylcellulose sodium (Carboxymethylcellulose Sodium), pregelatinized starch, povidone, Xanthan gum, PVP (Poly vinyl pyrrolidone), gelatin in 100 parts by weight of the dry powder Disclosed is a method for producing a powder for forming clay using citrus fruits, comprising a mixing step of mixing 6 to 12 parts by weight of a binder selected from the group consisting of , and starch.

According to one embodiment of the present application, in the peel drying step, the peel of the citrus fruits is immersed in a dipping container containing water diluted with a detergent having a chlorine content of 5 to 10 ppm, and then the washed peel is dried to obtain an amount of 5% by weight or less. It may be to keep it hydrated.

In the grinding step, the fine powder may be separated through a 180 to 220 mesh sieve.

In the step of obtaining the extract, the extract is prepared by using one or more enzymes selected from the group consisting of amylase, glucosidase, pectinase, and cellulase for the remaining solid content in an ethanol solvent. may have been extracted. In addition, the extract may be extracted after reacting amylase and cellulase with the remaining solids using 4 to 6 wt% of an enzyme, respectively. In addition, the ethanol extraction may be a high-temperature reflux extraction for 4 to 6 hours and an extraction at 50 to 60°C for 2 to 5 hours.

In the drying step of the powder, the fine powder and the extract may be dried for 3 to 6 hours.

In the mixing step, 2 to 4 parts by weight of Hydroxyrpopylcellulose (HPC), 2 to 4 parts by weight of carboxymethylcellulose sodium, and 2 to 4 parts by weight of pregelatinized starch may be mixed with 100 parts by weight of the dry powder. .

As one aspect for solving the above problem, the present application,

preparing a powder for forming the citrus clay;

mixing the clay-forming powder with water in a ratio of 4 to 6: 6 to 4;

kneading and molding the mixture;

It provides a method for manufacturing a clay molded article, comprising the step of drying the molded article.

According to one embodiment of the present application, the drying step includes (1) drying for 20 to 30 hours at a temperature of 10 to 15° C. in an indoor drying field, (2) 20 to 30 hours at a temperature of 20 to 25° C. in an outdoor drying field Time drying, and (3) drying for 20 to 30 hours at a temperature of 60 to 80 ℃ in a furnace may be included.

An apparatus according to an embodiment may be controlled by a computer program stored in a medium to execute the method of any one of the above-described methods in combination with hardware.

By using the clay-forming powder using 100% natural citrus fruits from the citrus peel of the example, it is possible to produce clay with a beautiful color and excellent formability. Using the clay of the embodiment, it is possible to manufacture various products, such as a citrus pencil, citrus clay, citrus flowerpot, citrus green brick, citrus diffuser, and citrus table. This contributes to the recycling of resources and makes it possible to produce crafts with beautiful natural colors.

1 is a schematic diagram showing a method of manufacturing a powder for forming clay using citrus fruits according to an embodiment.
2 is a photograph of packaging the powder for forming clay using citrus fruits according to Example 1. FIG.
3 is a photograph of a clay forming pencil prepared according to Experimental Example 1 using the clay forming powder of Example 1 and Comparative Examples 1 to 6;

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various changes may be made to the embodiments, the scope of the patent application is not limited or limited by these embodiments. It should be understood that all modifications, equivalents and substitutes for the embodiments are included in the scope of the rights.

Specific structural or functional descriptions of the embodiments are disclosed for purposes of illustration only, and may be changed and implemented in various forms. Accordingly, the embodiments are not limited to the specific disclosure form, and the scope of the present specification includes changes, equivalents, or substitutes included in the technical spirit.

Although terms such as first or second may be used to describe various elements, these terms should be interpreted only for the purpose of distinguishing one element from another. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component.

When a component is referred to as being “connected to” another component, it may be directly connected or connected to the other component, but it should be understood that another component may exist in between.

The terms used in the examples are used for the purpose of description only, and should not be construed as limiting. The singular expression includes the plural expression unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate that a feature, number, step, operation, component, part, or a combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

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

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims.

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

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are illustrative and the present invention is not limited to the illustrated matters. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. When 'including', 'having', 'consisting', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, cases including the plural are included unless otherwise explicitly stated.

In interpreting the components, it is construed as including an error range even if there is no separate explicit description.

The size and thickness of each component shown in the drawings are illustrated for convenience of description, and the present invention is not necessarily limited to the size and thickness of the illustrated component.

Each feature of the various embodiments of the present invention may be partially or wholly combined or combined with each other, and as those skilled in the art will fully understand, technically various interlocking and driving are possible, and each embodiment may be implemented independently of each other, It may be possible to implement together in a related relationship.

Disclosed herein is a method for preparing a powder for forming clay using citrus fruits. Specifically, it includes a drying step (S10) of citrus peels, a grinding step (S20), an extract obtaining step (S30), a drying step of the powder (S40), and a mixing step (S50) of the binder.

Citrus fruits in the present application are used without limitation as long as the citrus genus (橘屬, scientific name: Citrus citrus) is a fruit of the genus Russinaceae. Illustratively, there may be tangerine, Onju tangerine, hallabong, cheonhyehyang, redhyang, goldenhyang, and karahyang, and various varieties of improved fruits may be included.

The citrus peel drying step (S10) is to naturally dry the citrus peel to have a moisture content of 10% or less. Specifically, it may be dried to have a moisture content of 5% or less. During the drying process, be careful as the citrus peel may be affected by mold due to its sugar content and damage. As a result, browning may occur due to the destruction of pigments such as vitamins and carotene. In summer, it can be dried outdoors for 3 days, and in winter, it can be dried for about 1 week in a well-ventilated place.

In the peel drying step, the peel of the citrus fruits may be washed by immersing it in a immersion container containing water diluted with a detergent having a chlorine content of 5 to 10 ppm.

The pulverization step (S20) is to obtain a fine powder and residual solids after pulverizing the dried shells using a pulverizer. In the grinding step, the fine powder may be separated through a 180 to 220 mesh sieve. Residual solid content refers to the solid content remaining after the fine powder is separated through a sieve.

The extract obtaining step (S30) is to concentrate and freeze-dry the ethanol extract of the remaining solid content under reduced pressure. If the powder for clay formation is made using only the fine powder, the desired color may not be obtained, and if the dried product of the extract of the remaining solid content is used together, the color may be improved.

In the step of obtaining the extract, the extract is prepared by using one or more enzymes selected from the group consisting of amylase, glucosidase, pectinase, and cellulase for the remaining solid content in an ethanol solvent. may be reacting. As a result, the extraction content of carotenoid-based pigments contained in citrus peels may increase. Specifically, the extract may be extracted after reacting amylase and cellulase with the remaining solids using 4 to 6 wt% of an enzyme, respectively.

The ethanol extraction may be high-temperature reflux extraction for 4 to 6 hours and extraction at 50 to 60° C. for 2 to 5 hours.

The drying step (S40) of the powder is to mix the fine powder and the extract and dry it at a temperature of 76 to 84 °C. When drying at a temperature of 85℃ or higher, browning may occur due to caramelization. In the drying step of the powder, the fine powder and the extract may be dried for 3 to 6 hours. When drying for more than 5 hours at 82℃ in a dryer, blackening may occur due to vitamin destruction and sugar content caramelization.

The binder and mixing step (S50) is performed in 100 parts by weight of dry powder: Hydroxypropyl cellulose (HPC), Carboxymethylcellulose Sodium, Pregelatinized starch, Povidone, Xanthan gum, PVP (Poly vinyl pyrrolidone), gelatin, and 6 to 12 parts by weight of a binder selected from the group consisting of starch are mixed.

The content of the binder may be appropriately changed depending on the sugar content of citrus fruits, and the preferred content is shown in Table 1 below.

Tangerines in winter - Binder ratio based on dry powder (% by weight)
Summer Tangerine - Binder ratio based on dry powder (% by weight) tangerine 8-10%
Tangerine (House) 12% Hallabong 7-9%
incense 6-7% Cheon Hye-hyang 6-7%
Mandarin oranges (open field) 9-10%

Meanwhile, the content of the binder may vary depending on the use of the molded article. Illustratively, based on the dry powder, citrus pencils may be mixed in a ratio of 8 to 10% by weight, citrus clay 6 to 8% by weight, and citrus crushed bricks: 10 to 12% by weight. If the ratio is incorrect, drying may not be possible or cracks may occur during the drying process.

Disclosed herein is a method for manufacturing a citrus clay molded article. Preparing a powder for forming clay using the citrus fruits, mixing water with the powder for forming clay in a ratio of 4 to 6: 6 to 4, kneading and molding the mixture, and drying the molded product includes steps.

The drying step includes (1) drying for 20 to 30 hours at a temperature of 10 to 15° C. in an indoor drying facility, (2) drying for 20 to 30 hours at a temperature of 20 to 25° C. in an outdoor drying facility, and (3 ) may include the step of drying for 20 to 30 hours at a temperature of 60 to 80 ℃ in a hot storage room. All drying processes must be done within the appropriate time period to prevent oxidation.

Hereinafter, the configuration of the present invention and its effects will be described in more detail through specific examples and comparative examples. However, these examples are for explaining the present invention in more detail, and the scope of the present invention is not limited to these examples.

Example 1. Preparation of powder for clay formation using citrus fruits

1. Step 1 - Drying of the skins

After brushing the citrus peel, wash by immersing it in an immersion bin containing water diluted with a detergent with a chlorine content of 5 to 10 ppm After completion, it was dried to have a moisture content of 4% by weight in a natural drying field. In summer, it can be dried outdoors for 3 days, and in winter, it can be dried for about 1 week in a well-ventilated place. The skin damaged during drying was removed because it turned black during the drying process.

2. 2nd stage - crushing of the skins

It was thirdly pulverized using a pulverizer, and finally pulverized using a pulverizing mixer. The fine powder was separated through a 200 mesh sieve, and a residual solid was also obtained.

3. Step 3 - Processing and Extraction of Residual Solids

3L of ethanol was added to 1kg of the remaining solid, and 5% by weight of amylase and cellulase were treated and reacted for 12 hours. Thereafter, after boiling for 5 hours in a reflux extractor equipped with a cooling condenser, extraction was performed at a high temperature, and then extracted again at a low temperature of about 55°C for 3 hours to minimize denaturation of the extract. Then, the resultant was filtered through a 300 mesh filter cloth, and the residue was extracted one more time in the same manner, and then all solid residues were filtered and removed. After that, each resultant was concentrated under reduced pressure in a distillation apparatus equipped with a cooling condenser, and then freeze-dried to obtain an extract.

4. Step 4 - Drying of the powder

The extract obtained from the fine powder obtained in the pulverization step of the peel and the residual solid was mixed and dried in a 100Kg Ecosmart dryer at 82° C. for 5 hours, and then left in nature for 3 hours. Then, the powder was separated again through a 200mesh sieve.

5. Step 5 - Binder and Mixing Step

To 100 parts by weight of the dry powder, 3 parts by weight of HPC (Hydroxyrpopylcellulose), 3 parts by weight of carboxymethylcellulose sodium, and 3 parts by weight of pregelatinized starch were mixed together with 3 parts by weight of pregelatinized starch to form a clay-forming powder using citrus fruits.

Comparative Examples 1 to 6. Preparation of powder for forming clay using citrus fruits

Numerous experiments were repeated until deriving the above example, and among them, Comparative Examples 1 to 6 were prepared by a manufacturing method different from Example 1 as shown in Table 2 below.

Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Step 1 - - - - - - Step 2 - - - - - Separation of powder with 100mesh Step 3 perform X perform X Use of water extract perform X Enzyme free - Step 4 Dry 90℃ Dry 85℃ - dry 7 hours - Separation of powder with 100mesh Step 5 - - - - - -

Specifically, Comparative Examples 1 and 2 did not add the extract of the third step, and there is a difference in drying at 90° C. and 85° C. in the fourth step. Comparative Example 3 is different in that it was extracted by adding water instead of ethanol in the third step. Comparative Example 4 did not add the extract of the third step, and there is a difference in that it was dried for 7 hours. Comparative Example 5 was different in that no additional enzyme was used in the third step, and Comparative Example 6 used a 100 mesh body in the second and fourth steps.

Experimental Example 1. Manufacturing method of clay molded pencil

Molded articles were prepared by adding water to the clay-forming powder of Example 1 and Comparative Examples 1 to 6 and kneading it. Water and clay-forming powder were mixed in a volume ratio of 5:5.

The mixture is placed in a stirrer and compressed to obtain a dough. After making the clay softer by repeating 3 times, a pencil mold was attached to the citrus train outlet. A pencil-shaped frame was extracted by adding the citrus clay made. A 2H 5mm pencil lead was inserted into the pulled out pencil frame. The tip of the pencil was finished in a round shape.

After that, the clay molded article was completed by tertiary drying.

1) Primary drying: Cover with a cloth with good air permeability in a drying area and dry at 10 to 15℃ for 1 day (Dry it by turning it twice a day when drying.)

2) Secondary drying: Dry for 1 day at about 20 to 25℃ in a well-ventilated outdoor drying area (browning phenomenon occurred due to chemical change of sugar - caramelization)

3) 3rd drying: Dry for 24 hours at 80℃ or less in a hot storage room

3 shows pictures of the molded pencils prepared in Example 1 and Comparative Examples 1 to 6 . Comparative Examples 1 and 2 showed severe browning, which is considered to be due to drying at a high temperature. In Comparative Example 3, a water extract was added instead of an ethanol extract in the third step, and it is judged that the browning phenomenon was severe as the water was extracted at a high boiling temperature. In Comparative Examples 4 to 6, the browning phenomenon was not severe, but the color did not appear to the extent of giving the desired aesthetic feeling. On the other hand, in the case of Example 1, the color was the best and the feeling of use of the clay dough was excellent.

Claims (3)

A citrus peel drying step in which the peel of citrus fruits is immersed in an immersion container containing water diluted with a detergent having a chlorine content of 5 to 10 ppm, dried the washed peel, and naturally dried to have a moisture content of 5 wt% or less;
After pulverizing the dried shells using a pulverizer, separating fine powder through a 180 to 220 mesh sieve, and pulverizing to obtain a residual solid content;
Ethanol extract obtained by reacting the remaining solids with one or more enzymes selected from the group consisting of amylase, glucosidase, pectinase and cellulase in an ethanol solvent and then extracting Concentrating and freeze-drying the extract under reduced pressure;
A drying step of mixing the fine powder and the extract and drying the powder at a temperature of 76 to 84°C for 3 to 6 hours;
A mixing step of mixing 2 to 4 parts by weight of HPC (Hydroxypropyl cellulose), 2 to 4 parts by weight of carboxymethylcellulose sodium, and 2 to 4 parts by weight of pregelatinized starch to 100 parts by weight of the dry powder, A method for producing a powder for clay formation by mixing with water.
The method of claim 1,
In the step of obtaining the extract, the extract is extracted after reacting amylase and cellulase with the residual solid content using 4 to 6 wt% of an enzyme based on the residual solid content, respectively, and the ethanol extraction is 4 to 6 hours of high-temperature reflux extraction and 2 to 5 hours of extraction at 50 to 60 °C,
A method for producing a powder for clay formation by mixing with water.
The method of claim 1 , further comprising: preparing a powder for forming clay by mixing with water;
mixing the clay-forming powder with water in a ratio of 4 to 6: 6 to 4;
kneading and shaping the mixture;
A method for producing a citrus clay molded article, comprising the step of drying the molded article.

Images