KR20210026481A - Manufacturing method for liquid soap consisting of natural substance - Google Patents

Abstract

The present invention relates to a method for manufacturing liquid soap consisting of natural materials, which comprises: a lecithin separation step of separating lecithin from egg yolk; a fatty acid production step of separating coconut fatty acid from coconut oil; a promoter manufacturing step of mixing the separated lecithin and purified water; a soap preparation step of stirring the coconut fatty acid and the promoter; and an additive input step of adding glycerin and sugar to the soap after soap production is completed. According to the present invention, since lecithin, which is a natural material, is used, handling is facilitated. A saponification reaction can proceed at room temperature through a reaction with fatty acids. All used materials are made of food-additive materials, so the liquid soap can be free from product defect rates due to safety issues while ensuring safety during a manufacturing process. In addition, even when compared to products using general surfactants, the liquid soap can significantly reduce skin irritation while maintaining a decent level of cleaning power.

Description

Manufacturing method for liquid soap consisting of natural substance}

The present invention relates to a liquid soap made of natural materials, and more particularly, to a liquid soap made of natural materials that can reduce irritation to the skin as well as excellent cleansing power made of only natural materials without adding surfactants and chemicals. About

The surface of the skin is covered with a stratum corneum to protect the skin first, and various harmful impurities adhere or penetrate into the skin of humans who engage in social activities while exposed to various pollutant environments.

Impurities adhering to the skin or penetrating into the skin are provided as nutrients for bacteria or interfere with the smooth cell activity of the skin, causing skin troubles such as dermatitis, and blocking the sweat glands, causing side effects such as deterioration of the body temperature control function through the discharge of sweat. As it occurs, the skin needs to be cleaned frequently.

The detergent has adequate foaming power in cold water and hot water, cleanly removes oily and aqueous contamination adhering to the skin, has less irritation to the skin, prevents excessive degreasing, supplies moisture to the skin that is easy to be taken away during washing, and evaporates moisture at the same time. It is desirable to have a product that has excellent skin moisturizing power so that it can prevent skin roughness and increase skin flexibility.

Typically, detergents include surfactants, cleaning agents, moisturizing agents such as natural moisturizing ingredients and natural vegetable oils, active ingredients for pursuing functionality, and fragrances with an aroma effect. It gives moisturizing power, cleaning power and foaming power to the product. Looking at the product characteristics according to the surfactant, if only fatty acid soap, which is an anionic surfactant, is used, it has excellent foaming power and cleansing power, but if the cleansing power is excessive, it can weaken or roughen the skin. On the other hand, the interface excluding fatty acid soap components In the case of the active agent, the foaming power is adequate, but there is a problem that a slippery sensation remains due to insufficient skin adsorption and rinsing properties of the surfactant, and skin irritation caused by the surfactant is sometimes caused.

On the other hand, natural soap refers to a soap made by adding a natural material having a surfactant function without adding a synthetic surfactant, which is a chemical substance. Unlike conventional soaps using a synthetic surfactant, it has the advantage of significantly reducing irritation to the skin. . Such natural soap is disclosed in'Patent Document 1'.

'Patent Literature 1'relates to a liquid soap manufacturing method using bamboo charcoal, and the claim 1 relates to an oil base by heating and stirring a mixed oil of palm oil, coconut oil, castor oil, and rice bran oil to 80°C. Oil base manufacturing step of manufacturing; A saponification solution preparation step of mixing 115 parts by weight of purified water and 115 parts by weight of potassium hydroxide based on 500 parts by weight of the mixed oil, heating to 80° C. and stirring to prepare a saponification solution; A soap paste preparation step of preparing a soap paste by mixing the oil base and the saponification solution and then stirring with a blender until a gelled state is achieved; A sugar mixture preparation step of mixing 115 parts by weight of purified water and 35 parts by weight of sugar based on 500 parts by weight of the mixed oil and heating to 80° C. to prepare a sugar mixture; A transparent soap paste manufacturing step of adding the sugar mixture to the soap paste and stirring to prepare a transparent soap paste; A bathing step of cooling the transparent soap paste after bathing; A bamboo soap paste manufacturing step of preparing a bamboo soap paste by adding 1 to 2 parts by weight of aroma oil and 5 to 10 parts by weight of bamboo charcoal powder to the transparent soap paste bathed in the bathing step based on 500 parts by weight of the mixed oil; A stabilizing step of stabilizing the bamboo soap paste for 2 to 4 weeks at a temperature between 2° C. and 5° C.; A dilution step of preparing a liquid bamboo soap by mixing the stabilized bamboo soap paste with a diluent in a ratio of 1:2 and adding 0.2 to 0.5 parts by weight of bamboo salt; liquid soap using bamboo charcoal, comprising: Manufacturing method” is disclosed.

However, even in the case of'Patent Document 1', potassium hydroxide is used as an accelerator to induce the saponification reaction. Potassium hydroxide is a strongly basic substance and requires a high level of management and supervision to prevent accidents in the manufacturing process. Also, the high pH can cause problems when ingested by animals or children.

KR 10-2019-0064830 A1 (2019. 6. 11.)

The present invention was conceived to solve the above problems, and the problem to be solved in the present invention is a method for producing a liquid soap made of natural materials using lecithin, a natural substance separated from egg yolk as an accelerator for inducing a saponification reaction. To provide.

The method for producing a liquid soap made of natural material according to the present invention for solving the above problems includes a lecithin separation step of separating lecithin from egg yolk; Fatty acid production step of separating the coconut fatty acid from the coconut oil; An accelerator manufacturing step of mixing the separated lecithin and purified water; A soap manufacturing step of stirring the coconut fatty acid and the accelerator; And an additive step of adding glycerin and sugar to the soap after the soap production is completely completed.

The method of manufacturing a liquid soap made of natural materials according to the present invention uses lecithin, a natural material, which is less burdensome to handle, and the saponification reaction can proceed at room temperature through a reaction with fatty acids, and all materials used are made of food additives. While ensuring safety in the manufacturing process, it is free from the defect rate of products due to safety issues.

In addition, it is possible to significantly reduce skin irritation while maintaining an acceptable level of cleansing power even when compared to products using general surfactants.

1 is a block diagram of a method for manufacturing a liquid soap made of natural materials according to the present invention

Terms and words used in the present specification and claims conform to the technical idea of the present invention based on the principle that "the inventor can appropriately define the concept of terms in order to describe his or her invention in the best way." It should be construed as a meaning and concept, but not limited to a conventional or dictionary meaning.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all the technical spirit of the present invention, and thus various equivalents that can replace them at the time of application It should be understood that there may be water and variations.

Lecithin separation step (S10) is a step of separating lecithin from egg yolk. The present invention induces a saponification reaction with coconut fatty acids, which will be described later, using a natural surfactant, but using lecithin isolated from the egg yolk of an edible egg, without using a chemically synthesized surfactant.

Lecithin separation step (S10) specifically, the yolk separation step (S12) of separating the yolk from the egg; A soft-boiled step of heating the separated yolk to a soft-boiled state (S13); Drying step of heating and drying the soft-boiled egg yolk (S14); Crushing step of pulverizing the dried yolk (S15); An extraction step of preparing a lecithin extract by mixing a solvent with the pulverized egg yolk (S17); And an evaporation step (S18) of evaporating the solvent of the lecithin extract.

The yolk separation step (S12) is a step of separating the yolk from the egg, and the soft-boiled step (S13) is a step of heating the separated yolk to a soft-boiled state. However, the soft-boiled step (S13) and the yolk separation step may be contradictory to each other. In other words, it is okay to boil eggs in a soft-boiled state and then separate only the yolk.

When the soft-boiled step (S13) is after performing the yolk separation step (S12), it is preferable to heat for 3-4 minutes at a temperature of 100°C, and before performing the egg yolk separation step (S12), it is preferable to boil in boiling water for 15 minutes. Do.

The drying step (S14) is a step of applying heat to the soft-boiled egg yolk to dry it, and preferably, heat is applied at a temperature of 70° C. or less to reduce the moisture content to 10% or less.

The pulverizing step (S15) is a step of pulverizing the egg yolk dried in the drying step (S14). It is not necessary that the size to be pulverized is precisely the same, but it is preferable that the size is pulverized to a size of 1 mm or less.

The extraction step (S17) is a step of preparing a lecithin extract by mixing a solvent with pulverized egg yolk, and the solvent may be water, ethyl alcohol, or a mixture thereof. Specifically, the extraction step (S17) is preferably extracted while stirring for 1-2 hours at a temperature of 30-70 ℃.

In the evaporation step (S18), lecithin is extracted with a solvent in the extraction step (S17), and then only the supernatant is separated and the solvent is evaporated to obtain yolk oil containing lecithin.

Meanwhile, the lecithin separation step (S10) may further increase the extraction efficiency of lecithin by extracting lecithin using alcohol prepared through the alcohol fermentation step (S16).

The alcohol fermentation step (S16) is a step for increasing the extraction efficiency of lecithin from the egg yolk by adding yeast to the egg yolk pulverized through the grinding step (S15) to cause alcohol fermentation. Specifically, in the alcohol fermentation step (S16), 3 parts by weight of yeast liquid and 20 to 30 parts by weight of sugar are mixed based on 100 parts by weight of pulverized egg yolk, and then fermented at room temperature for 4 to 7 days.

Accordingly, there is an advantage of increasing the extraction efficiency of lecithin from egg yolk.

The fatty acid production step (S20) is a step of preparing a fatty acid, which is a reactant of the saponification reaction, and the present invention is used by extracting the fatty acid from vegetable oil. As raw materials for vegetable oils that can be used, palm oil, coconut oil, sunflower oil, grapeseed oil, olive oil, avocado oil, jojoba oil, evening primrose oil, soybean oil, brown rice oil, canola oil, and the like can be used. The present invention has the advantage of performing an efficient reaction even at room temperature by performing a saponification reaction using the fatty acid extracted from vegetable oil as described above. Hereinafter, it will be described based on the use of coconut fatty acids extracted from coconut oil.

The accelerator manufacturing step (S30) is a step of preparing an aqueous lecithin solution that provides an emulsifying agent in the saponification reaction, and specifically, the lecithin separated in the lecithin separation step (S10) and purified water are mixed by stirring at room temperature.

In addition, it is possible to increase the reactivity by further adding potassium carbonate, which is an edible additive. Specifically, when additional potassium carbonate is added, it is preferable to lower the lecithin content as potassium carbonate is added. Thus, the mixing ratio of fatty acid to accelerator remains the same.

In addition, arginine, which is a kind of amino acid, may be further included in order to increase the effectiveness of the accelerator. If arginine is further included, it is preferable to add half of the content of lecithin (or a mixture of lecithin and potassium carbonate), and it is preferable to add so that the pH of the final liquid soap is 10 or less so that the pH does not become too high.

On the other hand, in the accelerator manufacturing step (S30), sodium hydrogen carbonate may be further added. Sodium hydrogen carbonate serves to increase the cleaning power, and it is preferable to add 0.5 to 7% by weight based on the total weight. When it exceeds 7% by weight, it is not completely dissolved at room temperature, and when it is less than 0.5% by weight, cleaning power cannot be supplemented.

In general, the present invention is made of an edible material because it uses lecithin, a natural material, not sodium hydroxide or potassium hydroxide, which is a representative material of the saponification reaction, and potassium carbonate, which is also used to increase the reaction efficiency, is used. By doing so, i) is free from safety accidents due to harmful substances that may occur during the manufacturing process of soap, and ii) it has the advantage of being free from the problem of product defect rates (for example, high pH or toxicity) due to potassium hydroxide remaining after the saponification reaction.

The soap production step (S40) is a step of preparing a soap by mixing the vegetable fatty acid prepared in the fatty acid production step (S20) and an accelerator to proceed with a saponification reaction.

The soap production step (S40) is mixed by stirring the fatty acid and the accelerator with a stirrer at a temperature of 4°C or higher. This is because if the saponification reaction does not occur sufficiently and part of the base oil remains unreacted, a problem of rancidity occurs. Preferably, it should be stirred for at least 30 minutes. In addition, the present invention has the advantage that the reaction can sufficiently occur even when stirring at room temperature without the need to stir while heating by using the fatty acid of the plant.

And in the soap manufacturing step (S40), when potassium carbonate is included in the accelerator, it is preferable to mix the fatty acid while gradually administering the fatty acid to the container containing the accelerator. This is because when mixed at once, there is a problem in that the reaction may occur explosively due to the generation of carbon dioxide gas. Accordingly, in order to perform the process quickly and stably, the gas generated by the vacuum deaerator can be immediately discharged.

In terms of the amount added, the fatty acid is preferably 5 to 25% by weight based on the total weight ratio. When the fatty acid is less than 5% by weight, the cleaning power is rapidly reduced and the viscosity is too low, so that the cleaning agent easily flows down during actual use. On the other hand, when the fatty acid exceeds 30% by weight, the viscosity is excessively increased, so that it is difficult to come out of the container during actual use, and there is a problem that bubbles do not occur in the container that generates bubbles during pumping.

And it is preferable that the ratio of fatty acid to lecithin is mixed in a ratio of 1:1 based on the weight ratio. If it is mixed in less than the above ratio, the viscosity decreases and there is a problem of less washing, and if it is mixed in excess of the above ratio, there is a problem that it becomes cloudy.

Additive input step (S50) is a step of adding ingredients that complement various functions and disadvantages of the natural material liquid soap according to the present invention, adding glycerin to compensate for dryness that may occur in the process of use, and soft foaming. Add sugar for generation. In particular, sugar can also remove the peculiar smell of natural soaps. Specifically, it is preferable that 2.5% by weight of glycerin and 1.25% by weight of sugar are added to the total weight ratio.

On the other hand, the sugar contained in the additive input step (S50) may be added after the first pulverization, which serves to make the foam soft and rich when the liquid soap made of natural material according to the present invention is used.

Example 1

1) After boiling 10 eggs in boiling water for 15 minutes, the yolk was separated. The separated egg yolk was heated to a temperature of 65 for 1 hour, and then pulverized to a size of 1 mm or less using a grinder. Ethyl alcohol (alcohol) 5 times the weight of the pulverized egg yolk was added, followed by stirring at a temperature of 50° C. for 1 hour. After that, only the supernatant was separated, and then yolk oil containing lecithin was obtained using an evaporation concentrator.

2) Coconut fatty acid was separated and extracted from coconut oil.

3) 15 g of egg yolk oil, 0.5 g of sodium hydrogen carbonate, and 65.75 ml of purified water were stirred to prepare an accelerator.

4) 15 g of coconut fatty acids and 3) of the accelerator were stirred to prepare a soap.

5) 2.5 g of glycerin and 1.25 g of sugar were added to the soap prepared in 4), followed by stirring.

Example 2

It was prepared in the same manner as in Example 1, but in 3), an accelerator was prepared by stirring 7.5g of egg yolk oil, 7.5g of potassium carbonate, 0.5g of sodium hydrogen carbonate, and 65.75ml of purified water.

Example 3

Prepared in the same manner as in Example 1, but in 3), 15 g of egg yolk oil, 7.5 g of arginine, 0.5 g of sodium hydrogen carbonate, and 58.25 ml of purified water were stirred to prepare an accelerator.

Example 4

1) After boiling 10 eggs in boiling water for 15 minutes, the yolk was separated. The separated egg yolk was heated to a temperature of 65 for 1 hour, and then pulverized to a size of 1 mm or less using a grinder. 3 parts by weight of yeast liquid and 30 parts by weight of sugar were added to the pulverized egg yolk, followed by alcohol fermentation at room temperature for 7 days. Five times the weight of fermented egg yolk was added to ethyl alcohol (alcohol), followed by stirring at a temperature of 50° C. for 1 hour. After that, only the supernatant was separated, and then yolk oil containing lecithin was obtained using an evaporation concentrator.

2) to 5) were prepared in the same manner as in Example 1.

Experimental Example 1. Measurement of the amount of foam

The amount of foam in Examples 1 to 3 was measured. Specifically, the amount of foam was measured through a cross-miles foam test. The results are shown in Table 1 below.

sample Example 1 Example 2 Example 3 Example 4 Foam quantity (mm) 170 192 196 185

As can be seen in Example 1, it can be seen that the liquid soap made of natural material according to the present invention has an excellent level of foaming ability without adding separate surfactants and chemical synthetic substances. In the case of Example 2, it can be seen that the amount of foam increases by about 13% compared to Example 1. In addition, as can be seen in Example 3, when the pH is increased by adding arginine, it can be seen that the amount of foam is also increased as a result of better activation of the saponification reaction. As can be seen in Example 4, it can also be seen that an excellent level of foam can be generated by increasing the extraction efficiency of lecithin through fermentation.

Experimental Example 2. Detergency test (sensory test)

The cleaning power of Examples 1 to 3 was evaluated on 10 men and women between their 20s and 40s. The smoothness when washing hands and the cleanliness after rinsing with water were evaluated, and 5 points for excellent and 1 point for poor evaluation were evaluated according to the 5-point evaluation method. The results are shown in Table 2 below.

Example 1 Example 2 Example 3 Example 4 Slippery 3.8 4.0 4.5 4.3 Cleanliness 4.0 4.1 4.2 4.0

It can be seen that each example has an excellent level of fat (stain) removal ability, and no significant difference was found in the cleaning power according to the example.

Claims (5)

Lecithin separation step of separating lecithin from egg yolk;
Fatty acid production step of separating the coconut fatty acid from the coconut oil;
An accelerator manufacturing step of mixing the separated lecithin and purified water;
A soap manufacturing step of stirring the coconut fatty acid and the accelerator; And
After the soap production is completely completed, the method for producing a liquid soap made of natural material comprising the step of adding an additive to the soap and adding glycerin and sugar.
The method according to claim 1,
The lecithin separation step,
Yolk separation step of separating the yolk from the egg;
A soft-boiled step of heating the separated yolk to a soft-boiled state;
A drying step of heating and drying the soft-boiled egg yolk;
A pulverizing step of pulverizing the dried egg yolk;
An extraction step of preparing a lecithin extract by mixing a solvent with the pulverized egg yolk; And
A method for producing a liquid soap made of natural material comprising an evaporation step of evaporating the solvent of the lecithin extract.
The method according to claim 1,
After the pulverizing step, the drying step and the pulverizing step are performed once more, and then the solvent extraction step is performed.
The method according to claim 1,
After the pulverizing step, the method further comprises an alcohol fermentation step of adding yeast to the pulverized egg yolk and fermenting it.
Liquid soap made of natural materials, characterized in that produced according to any one of claims 1 to 4.

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