KR19990055305A - Liquid detergent composition for vegetables and fruits - Google Patents

Abstract

The present invention relates to a liquid detergent composition for removing pesticides, microorganisms and other contamination of fruits and vegetables, the fruit and vegetable detergent composition according to the present invention is a polyoxyethylene sorbitan mono myristate 5.0 to a total weight of the composition 25% by weight and 5.0 to 15.0% by weight of citric acid are included to keep the freshness of fruits and vegetables while maintaining the freshness of the pesticides and contamination on the surface easily harmless to the human body as well as biodegradable to prevent environmental pollution It provides a detergent composition exhibiting an excellent effect.

Description

Liquid Detergent Compositions for exclusive use of vegetable and fruit

The present invention relates to liquid detergent compositions that remove pesticides, microorganisms and other contamination of fruits and vegetables.

In recent years, the increase of the use of chemical fertilizers and pesticides is increasing the pollution of crops such as vegetables and fruits, and foreign crops due to open imports have been subjected to various chemical treatments to maintain their freshness over a long distribution period. Contamination is increasing.

Therefore, some of the chemicals remaining in fruits and vegetables may be fatal to humans. Therefore, it is easy to remove pesticides, microorganisms and other contaminants left on the surface of fruits and vegetables by simple method, and it is stable to the human body because no residue of detergent is left, and it does not damage the skin and washing affects the freshness of fruits and vegetables. There was a need for detergents that do not give environmental pollution.

Meanwhile, general neutral detergents cause inflammation and irritation of the skin due to the sulfonate anionic surfactant, which is a main ingredient of the raw material, and therefore, an emollient or skin protection agent to reduce toxicity should be added. The detergents are also susceptible to environmental pollution. Of course, a biodegradable detergent has been developed, but the effect is insufficient, cleaning power and sterilization power as well as there was a problem that is expensive.

Accordingly, the present invention has been made to solve the above problems, to provide a liquid detergent composition that easily removes pesticides and contamination remaining on the surface while maintaining the freshness of fruits and vegetables, harmless to the human body and also prevent environmental pollution The purpose.

Liquid detergent composition according to the present invention for achieving the above object is characterized in that it comprises a polyoxyethylene sorbitan mono myristate 5.0 to 25.0% by weight, 5 to 15% by weight of citric acid soda composition .

In addition, the liquid detergent composition according to the present invention is characterized in that it comprises propylene glycol 0.01 to 2.0% by weight based on the total weight of the composition.

In addition, the liquid detergent composition according to the present invention is characterized in that it comprises 0.01 to 5.0% by weight of sucrose patty acid ester per weight of the composition.

Hereinafter, the present invention will be described in detail.

The liquid detergent composition according to the present invention includes polyoxyethylene sorbitan mono myristate of formula (1) and soda citric acid.

(Where w + x + y + z = 20 moles)

The polyoxyethylene sorbitan mono myristate is a compound produced by the condensation reaction of sorbitol myristate with 20 moles of ethylene oxide, which is safe for the human body, and is used as an additive or a solubilizer.

The polyoxyethylene sorbitan mono myristate is comprised of 5.0 to 25.0% by weight based on the total weight of the composition, and citric acid soda is comprised of 5 to 15% by weight.

In addition, the liquid detergent composition according to the present invention includes 0.01 to 2.0 wt% of propylene glycol in addition to the polyoxyethylene sorbitan mono myristate and citric acid soda to prevent reattachment of the contamination.

In addition, the liquid detergent composition according to the present invention, in addition to the polyoxyethylene sorbitan mono myristate and citric acid soda 1 to 5% by weight of sucrose patty acid ester of the formula (2) to enhance the cleaning and emulsifying power.

(Wherein R is an alkyl group of C ₁₀ to C ₁₅ and the content ratio of monoester and diester of sucrose patty acid ester is 4: 1 to 3: 2)

The sucrose patty acid esters are used in foods as emulsifiers, foaming agents, and dispersants.

The liquid detergent composition according to the present invention preferably contains 12.0 to 40.0% by weight of the active ingredient of the polyoxyethylene sorbitan mono myristate, sodium citrate, propylene glycol and sucrose patty acid ester. If the sum of these four active ingredients is less than 12.0% by weight, it does not show sufficient cleaning power, whereas if it exceeds 40.0% by weight, side effects such as skin irritation and freshness damage occur.

In addition, in the liquid detergent composition according to the present invention, the ratio between the active ingredients is very important. That is, the ratio of polyoxyethylene sorbitan mono myristate and propylene glycol to soda citric acid is preferably 20: 5 to 15:10. If citric acid soda is present at less than 25% by weight of the polyoxyethylene sorbitan mono myristate content, the cleaning power is weakened.

The same is true for compositions comprising sucrose patty acid esters. It is preferable that the ratio of the total content of polyoxyethylene sorbitan mono myristate, propylene glycol and sucrose patty acid ester and soda citric acid is 20: 5 to 15:10.

Furthermore, the liquid detergent composition which concerns on this invention contains an organic builder and a solvent as an additive. At this time, the additive should be harmless to the human body and usable for vegetables and fruits. The organic builder contains 1.0 to 2.0% by weight of citric acid, the solvent contains 1.0 to 5.0% by weight of ethanol.

Hereinafter, the present invention will be described in detail by Examples and Comparative Examples. However, the present invention is not limited to the following examples. Unless otherwise stated below, all units are in weight percent.

Examples 1-5 and Comparative Examples

To prepare a detergent composition according to the conventional method in the components and ratios of Table 1.

ingredient Example Comparative example One 2 3 4 5 One Alkylpolyoxyethylene sorbitan mono myristate 20.0 15.0 15.0 15.0 20.0 20.0 Propylene glycol 2.0 1.0 1.5 Citric acid soda 10.0 8.0 10.0 8.0 9.0 Sucrose Patty Acid Ester 4.0 4.0 Citric acid 0.5 0.5 0.5 0.5 0.5 ethanol 4.0 4.0 4.0 4.0 4.0 Purified water Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount

In addition, for comparison, a commercial neutral dishwashing agent made of an alkyl sulfate salt was used as Comparative Example 2 and Comparative Example 3 which consisted only of purified water.

Experimental Example

The following experiments were performed on the liquid detergent compositions prepared according to the Examples and Comparative Examples.

(1) pesticide residue evaluation

250 g of crop were immersed for 5 minutes in 7 l of each 0.5% solution of the compositions obtained in the examples and comparative examples. Then, the first wash in a 500rpm shaker for 3 minutes, and then washed with a 500rpm shaker for 2 minutes in 3ℓ of tap water for 2 minutes and then dried at room temperature for 1 day. After drying, 200 g of the crop was washed with 250 ml of acetone and extracted. The extract was dissolved in 10 ml of hexane, filtered and concentrated by reduced pressure. The concentrate was again dissolved in 10 mL of hexane and analyzed by GC / FID. The results are shown in Table 2.

Initial Pesticide Concentration (ppm) Primary washing 2nd washing Pesticide Residue (ppm) Removal rate (%) Pesticide Residue (ppm) Removal rate (%) Example 1 9.23 0.85 89.5 0.61 93.4 Example 2 9.15 0.90 90.2 0.46 95.0 Example 3 9.30 0.85 90.9 0.44 95.3 Example 4 9.34 0.86 90.8 0.46 95.1 Example 5 9.25 0.95 89.7 0.60 93.5 Comparative Example 1 9.26 2.57 72.2 2.31 75.1 Comparative Example 2 9.41 1.45 84.6 0.99 89.5 Comparative Example 3 9.22 2.95 68.0 2.35 74.5

As can be seen in Table 2, the detergent composition in Examples 1 to 5 according to the present invention was excellent in the pesticide removal effect on the crop, but includes a polyoxyethylene sorbitan mono myristate of a single component of Comparative Example 1 The composition had a relatively low pesticide removal effect.

(2) evaluation of cleaning power

According to the method of KS M 2716, the main ingredients of tallow and soybean oil were prepared and uniformly coated on the slide glass, and then the composition obtained in the above examples and the comparative example was prepared using a stirring mixed cleaning tester (rotation speed of 100 rpm). After 3 minutes of washing, residual contamination was dissolved and UV absorbance was measured to obtain a decontamination rate (%). The results are shown in Table 3.

Three manufactured castle water Example Comparative Example One 2 3 4 5 One 2 3 Cleaning rate (%) 85.0 90.0 95.0 93.0 94.0 62.0 88.0 19.0

As can be seen in Table 3, the detergent composition in Examples 1 to 5 according to the present invention was also excellent in the cleaning effect.

(3) microbial removal evaluation

In order to determine the effect of removing microorganisms on cucumbers and peppers, 200 g of the standard sample was immersed in 1000 ml of a solution of 0.2% of Examples 1 to 5 and Comparative Examples 1 to 3. Then, the mixture was stirred for 1 minute and then washed with tap water in a shaker at 200 rpm for 30 seconds. Thereafter, 25 ml of 1000 ml brine containing 100 g of standard specimens were shaken 25 times, and the number of living microorganisms remaining in the specimens was measured. That is, the number of viable microorganisms per gram of standard sample remaining in 1 ml of solution was counted.

The results are shown in Table 4.

cucumber pepper Example 1 125 112 Example 2 114 105 Example 3 98 92 Example 4 103 100 Example 5 132 119 Comparative Example 1 17562 16985 Comparative Example 2 4012 3257 Comparative Example 3 25897 25416

As can be seen in Table 4, the detergent compositions in Examples 1 to 5 according to the present invention effectively removed microorganisms remaining in crops such as cucumbers and peppers. However, the composition comprising the single component polyoxyethylene sorbitan mono myristate of Comparative Example 1 did not sufficiently remove the microorganisms.

(4) skin irritation evaluation

After 48 hours had elapsed after the patch sample of the 2% solution of the detergent composition obtained by the said Example and the comparative example was affixed inside the upper arm, it was removed. After 4 hours, erythema was visually determined according to the following criteria.

No erythema ◎

Slightly red than the surroundings ○

1/3 or more symptoms of red △

Red Color, Browning, Blistering Occurrences ×

The results are shown in Table 5.

Three manufactured castle water Example Comparative Example One 2 3 4 5 One 2 3 Skin stimulation ◎ ◎ ◎ ◎ ◎ ◎ △ ○

As can be seen in Table 5, the detergent composition according to the present invention is very good for skin irritation and Comparative Example 2, which is a neutral detergent, showed somewhat poor skin irritation.

(5) fish toxicity assessment

Israeli scent of 5 cm in length was used as a co-situ, and 19.7 mg of CaCl ₂ , 1.1 mg of K ₂ SO ₄ , 8.65 mg of MgSO ₄ , and 25 mg of NaHCO ₃ were dissolved per liter of ion-exchanged water to make the pH pH 7.0 and the water temperature 20 to 20. Fish toxicity was evaluated using the solution at 30 ° C. as the test water.

Four test pieces were used for each test section, and the test water was 1 liter per one test piece.

To evaluate the toxicity of fish by detergent, half- lethal concentration (TLm) was measured for 24 hours. At this time, it was regarded as the lethal that did not swim even though it was alive.

The results are shown in Table 6.

Three manufactured castle water Example Comparative Example One 2 3 4 5 One 2 Admiralty (TLm) 518 503 510 498 492 451 106

As can be seen in Table 6, the detergent composition according to the present invention did not show a detrimental effect on the ecosystem even at a concentration of 4 to 5 times higher than that of Comparative Example 2, that is, a neutral detergent.

(6) biodegradation evaluation

Biodegradation was evaluated by shaking culture method A, KS method.

The medium containing the inorganic nutrients and yeast extract was inoculated with sludge, which was subjected to two-purified culture with a detergent of 30 mg / L according to the above examples and comparison. Then, shaking culture was carried out at 25 ° C. for 8 days to measure the degree of biodegradation of the surfactant at 6 hour intervals. The degree of biodegradation of the anionic surfactant was evaluated by the MBAS method, and the degree of biodegradation of the nonionic surfactant was evaluated by the CTAS method.

Three manufactured castle water Biodegradation (%) 12 hours later 1 day after 7 days after Example 1 72.4 99.2 99.7 Example 2 76.8 99.5 99.8 Example 3 75.9 99.4 99.8 Example 4 76.1 99.4 99.8 Example 5 74.3 99.2 99.8 Comparative Example 1 70.3 99.0 99.6 Comparative Example 2 70.1 90.2 99.7

As can be seen in Table 7, the biodegradability of the compositions of Examples 1 to 5, which are detergent compositions according to the present invention, was superior to that of Comparative Examples.

As described above, the liquid detergent composition according to the present invention easily removes pesticides and contamination remaining on the surface while maintaining the freshness of fruits and vegetables, and is not only harmful to the human body, but also has excellent biodegradability to prevent environmental pollution. Excellent effect.

Claims (3)

A liquid detergent composition for vegetables and fruits, comprising 5.0 to 25% by weight of polyoxyethylene sorbitan mono myristate of Formula 1 and 5.0 to 15.0% by weight of citric acid soda, based on the total weight of the composition. Formula 1 (Where w + x + y + z = 20 moles) The liquid detergent composition of claim 1, wherein the detergent composition comprises 0.01 to 2.0 wt% of propylene glycol based on the total weight of the composition. 3. The liquid detergent composition according to claim 1 or 2, wherein the detergent composition comprises 0.01 to 5.0% by weight of sucrose patty acid ester with respect to the total weight of the composition.