A baking soda amino acid surfactant composite powdered detergent

Abstract

This application relates to a baking soda and amino acid surfactant composite powdered cleanser, which relates to the field of cleanser technology. The cleanser comprises the following raw materials, measured by weight: 97-99 parts baking soda and 1-3 parts amino acid surfactant; the amino acid surfactant is sodium lauroyl sarcosinate or sodium lauroyl glutamate. By combining baking soda with a small amount of powdered amino acid surfactant, the application utilizes the surfactant's wettability, spreadability, and emulsification properties to significantly improve the cleanser's ability to remove grease, particularly pesticide residues. The application also prevents the baking soda from clumping, allowing for better spreading during use.

Description

Technical Field

[0001] The present application relates to the technical field of detergents, and in particular to a baking soda amino acid surfactant composite powdered detergent. Background Art

[0002] Baking soda is made from sodium bicarbonate, an inorganic compound present as a white powder. It neutralizes acids and adjusts the pH of solutions. It can be used as a stomach acid reliever and to adjust the pH of foods and beverages. Sodium bicarbonate can be produced by various methods, including the combined alkali process, the ammonia-soda process, and the Leblanc process. It can also be refined from natural alkali. Baking soda is a safe, naturally derived cleaning agent that can also be used to wash dishes, fruits and vegetables, laundry, and various surfaces.

[0003] However, the components of commonly used baking soda cleaners are basically pure sodium bicarbonate or a mixture of sodium bicarbonate with some salt. Testing has shown that its ability to remove grease is not strong, especially its ability to remove pesticide residues is not strong. It is also very easy to clump during storage, making it inconvenient to use and difficult to spread. Summary of the Invention

[0004] In order to solve the problems of baking soda's easy clumping and poor pesticide removal ability, the present application provides a baking soda amino acid surfactant composite powdered cleaner. The baking soda and amino acid surfactant are combined for use, which effectively solves the problem of baking soda clumping and can further improve the detergency of baking soda, especially the pesticide removal effect.

[0005] In a first aspect, the present application provides a baking soda amino acid surfactant composite powdered cleaner, the cleaner comprising the following raw materials in parts by weight: 97-99 parts baking soda and 1-3 parts amino acid surfactant;

[0006] The amino acid surfactant is sodium lauroyl sarcosinate or sodium lauroyl glutamate.

[0007] Furthermore, the above-mentioned amino acid surfactant is sodium lauroyl glutamate.

[0008] Furthermore, the mass ratio of the baking soda and sodium lauroyl glutamate is 99:1.

[0009] Furthermore, the purity of the baking soda is ≥99.0%.

[0010] Furthermore, the purity of the sodium lauroyl glutamate is ≥95%.

[0011] In a second aspect, the present application provides a method for preparing a baking soda amino acid surfactant composite powdered detergent, the preparation method comprising:

[0012] The cleaning agent is prepared by dry mixing baking soda and amino acid surfactant and stirring.

[0013] Furthermore, a double-cone vertical mixer is used during stirring.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] 1. This application uses a mixture of baking soda and a small amount of powdered amino acid surfactant, utilizing the wettability, spreadability, and emulsification properties of the amino acid surfactant to greatly enhance the detergent's ability to remove grease, especially pesticide residues. It also prevents baking soda from clumping, allowing for better spreading during use.

[0016] 2. The amino acid surfactant used in this application is of natural origin and weakly acidic, which can neutralize the alkalinity of baking soda and reduce irritation to the skin. The combination of baking soda and amino acid surfactant can enhance the ability to remove dirt and pesticide residues, improve the appearance of the product, make it more convenient to use, while maintaining a higher degree of naturalness and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a graph showing the results of an unpackaged baking soda cleaner agglomeration experiment in an embodiment of the present application;

[0018] Figure 2 This is a graph showing the anti-caking test results of the packaged baking soda cleaner in the examples of the present application;

[0019] Figure 3 This is a graph showing the results of an experiment on removing oil stains by scrubbing apples in Experiment 2 of the present embodiment;

[0020] Figure 4 This is a graph showing the results of the cooking oil removal experiment in Experiment 3 of the present embodiment;

[0021] Figure 5 This is a graph showing the results of the pesticide residue removal experiment in Experiment 4 of the present embodiment. DETAILED DESCRIPTION

[0022] The present application is further described in detail with reference to the following examples. It should be noted that if no specific conditions are specified in the following examples, the experiments were carried out according to conventional conditions or those recommended by the manufacturer; unless otherwise specified, the raw materials used in the following examples can be obtained from common commercial sources.

[0023] This application provides a baking soda amino acid surfactant composite powdered cleaner:

[0024] Baking soda, composed of sodium bicarbonate, is a single-ingredient, naturally derived cleaning agent that can be used to clean any surface, including dishes, infant formula, household items, fruits and vegetables, and laundry. It is widely recognized by consumers as a safe and non-toxic cleaning product. Currently available baking soda cleaners are typically either directly bottled with sodium bicarbonate or mixed with a small amount of salt. Baking soda's primary mechanism of action is that it forms a weak alkaline substance when dissolved in water, which reacts with grease to remove oil stains through a saponification reaction. However, due to its weak alkalinity, baking soda alone has limited grease removal capabilities. According to the oil removal rate method specified in GB / T9985-2022 for dishwashing detergents, a 5% concentration of baking soda achieves a significantly lower oil removal rate than a 0.2% concentration of dishwashing detergent. Similarly, adding a small amount of salt does not improve its oil removal ability. Generally, baking soda must be combined with conventional dishwashing detergent to achieve relatively effective oil removal. Dishwashing detergents contain surfactants, which are significantly effective in removing grease.

[0025] However, the production of cleaning agents requires not only strong grease removal capabilities but also the ability to remove pesticides from fruits and vegetables. Pesticide residues on fruits and vegetables are primarily composed of water-insoluble oils. When sprayed on fruits and vegetables, these residues remain on their surfaces, effectively killing pests. However, this leaves pesticide residues, which cannot be removed by water alone. Therefore, a cleaning agent that can remove oily substances is needed to remove these residues.

[0026] When washing fruits and vegetables with dishwashing detergent, the chemical components may remain on their surface and cannot be completely removed even after rinsing. These chemicals may pose potential risks to human health. Furthermore, some ingredients in dishwashing detergent may be toxic or allergenic, affecting the quality and safety of fruits and vegetables. Consuming these residues may cause indigestion, allergic reactions, or other health problems. The chemical components in dishwashing detergent can also destroy nutrients in fruits and vegetables, resulting in a loss of nutritional value. Therefore, some food-grade dishwashing detergents specifically designed for washing fruits and vegetables are currently available on the market, but they are expensive and less economical. Baking soda, on the other hand, is inexpensive and has some degreasing properties, making it a common cleaning agent for fruits and vegetables.

[0027] However, baking soda's degreasing effect is limited and insufficient to completely remove pesticide residues. The inventors discovered that oil and water are two mutually incompatible liquids that separate into two layers in a container: the less dense oil in the upper layer and the denser water in the lower layer. By adding an appropriate surfactant to baking soda and vigorously stirring it, the oil is dispersed in the water, forming an emulsion. By leveraging the emulsification principle of surfactants, the water-insoluble oil becomes miscible with water under external force, thus removing the oil stain and enhancing baking soda's degreasing ability.

[0028] Based on the above problems, this application chooses to use baking soda and a small amount of powdered amino acid surfactant in combination. Through the wettability, spreadability and emulsification of amino acid surfactant, the ability to remove oil and pesticide residues can be greatly improved; and the addition of amino acid surfactant can also prevent baking soda from clumping and improve the appearance of the product.

[0029] Amino acid surfactants are salts (sodium, potassium, or triethanolamine) of amino acids (such as glutamic acid and glycine) derived from coconut oil (or laurel oil or palm oil) that possess foaming and detersive properties. Due to their natural origin and weak acidity, amino acid surfactants can neutralize the alkalinity of baking soda, reducing skin irritation, while also enhancing their ability to remove stains and pesticide residues. While maintaining their natural properties and safety, they further improve the product's appearance and ease of use. Compared to conventional dishwashing detergents and fruit and vegetable detergents, this product uses natural ingredients, produces less foam, is more affordable, is easier to rinse, leaves no residue, is safer, is simple to produce, and consumes less energy.

[0030] The amino acid surfactant can be sodium lauroyl sarcosinate or sodium lauroyl glutamate, with sodium lauroyl glutamate being preferred. Sodium lauroyl glutamate has excellent cleaning properties and can effectively remove grease and stains. It has good skin compatibility and does not cause adverse reactions such as irritation, dryness, or allergies. It stabilizes foam, allowing baking soda cleaners to produce rich, delicate foam, enhancing the user experience. It is biodegradable and environmentally friendly, without polluting water bodies or ecosystems. Most importantly, this amino acid surfactant mixes evenly with baking soda without disrupting its natural properties, preventing clumping and enhancing its effectiveness in cleaning and removing pesticide residues. The mass ratio of baking soda to sodium lauroyl glutamate is 99:1. The baking soda is food-grade with a purity of ≥99.0%, meeting the national food safety standard (GB1886.2-2015). The amino acid surfactant is free-flowing sodium lauroyl glutamate, containing ≥95% of the active ingredient.

[0031] Example

[0032] Example 1

[0033] The raw materials of the baking soda amino acid surfactant composite powdered cleaner include: 99Kg of food-grade baking soda with a purity of 99% and 1Kg of sodium lauroyl glutamate with a purity of 98%.

[0034] The preparation method of the baking soda amino acid surfactant composite powdered detergent comprises:

[0035] 1. Add 99 kg of baking soda into a double-cone vertical mixer, and then add 1 kg of powdered sodium lauroyl glutamate into the double-cone vertical mixer, so that the baking soda is placed at the bottom and the sodium lauroyl glutamate is on top of the baking soda;

[0036] 2. Then start the double-cone vertical mixer. The rotating spiral ribbon moves the materials in a circular motion from bottom to top along the wall of the mixing chamber, lifting or throwing them up. When the baking soda and sodium lauroyl glutamate reach the center or the highest point, they move downward by their own weight. The two components are evenly mixed by mechanical force and gravity.

[0037] 3. After stirring and mixing for 2 minutes, the double-cone vertical mixer was closed and the material was taken out to obtain a baking soda amino acid surfactant composite powdered cleaner (hereinafter referred to as baking soda cleaner).

[0038] Example 2

[0039] The difference between Example 2 and Example 1 is that different types of surfactants are used, as shown in Table 2 below.

[0040] Table 2. Surfactant types

[0041] Surfactant type Example 1 Sodium Lauroyl Glutamate Example 2 Sodium Lauroyl Sarcosinate Comparative Example 1 - Comparative Example 2 Sodium dodecylbenzenesulfonate Comparative Example 3 Sodium α-olefin sulfonate Comparative Example 4 Sodium lauryl sulfate

[0042] The effects of adding different types of surfactants on the appearance of baking soda cleaners were investigated. The cleaners prepared in Examples 1-2 and Comparative Examples 1-4 were placed in an environment at 37°C and 85% relative humidity. After being left untreated for 24 hours, the agglomeration of the cleaners was observed. The test results are shown in Table 3 below.

[0043] Table 3. Appearance of cleaning agents

[0044]

[0045]

[0046] As can be seen from Tables 1 and 2, the combination of baking soda and sodium lauroyl glutamate in Example 1 effectively solves the clumping problem of the baking soda cleaner when left alone, improves the cleaner's appearance, and makes it easier to spread during use. In Example 2, sodium lauroyl sarcosinate, an amino acid surfactant, is also effective in preventing caking, but because it is slightly more irritating than sodium lauroyl glutamate, sodium lauroyl glutamate is the preferred amino acid surfactant.

[0047] The cleaning agent prepared in Comparative Example 1 is only baking soda. Figure 1(The left picture shows the cleaner prepared in Comparative Example 1, and the right picture shows the baking soda cleaner prepared in Example 1.) Baking soda, when left untreated under the above conditions, will exhibit significant clumps, and the agglomerated particles are large, making them difficult to spread during use. However, the baking soda cleaner prepared in Example 1 exhibits almost no clumps and appears as a uniform, dispersed powder. Therefore, the addition of sodium lauroyl glutamate effectively alleviates the clumping problem of baking soda and improves its anti-caking ability.

[0048] The surfactants used in Comparative Examples 2-4 are commonly used in dishwashing detergents and help enhance the detergent's detergency. Comparative Example 1 uses powdered sodium dodecylbenzene sulfonate, available in various concentrations, including 60%, 70%, and greater than 70%. However, this surfactant readily absorbs moisture and clumps, and mixing it with baking soda does not prevent the baking soda from clumping. Furthermore, this surfactant is petroleum-derived, which would destroy the natural properties of baking soda detergents, making it unsuitable.

[0049] Comparative Example 2 uses sodium α-olefin sulfonate (powdered AOS), which has an active ingredient content of approximately 92% and is prone to caking, lacking any anti-caking properties. Furthermore, this powdered AOS is also derived from petroleum, which would destroy the natural properties of baking soda, making it unsuitable for cleaning.

[0050] Comparative Example 2 uses sodium lauryl sulfate (powdered K12), which has an active ingredient content of approximately 92%. It has excellent fluidity and prevents caking. However, K12 has a pH of 9-11 (1% solution), making it slightly alkaline. When mixed with baking soda, it increases the alkalinity of the baking soda cleaner, increasing its skin irritation. Furthermore, it is derived from petroleum, which would destroy the natural properties of baking soda cleaners, making it unsuitable for use.

[0051] Example 3

[0052] The difference between Example 3 and Example 1 is that the amounts of baking soda and sodium lauroyl glutamate are different, see Table 4.

[0053] Table 4. Dosages of baking soda and sodium lauroyl glutamate

[0054]

[0055]

[0056] According to Table 4, in Comparative Example 5, the proportion of amino acid surfactant is less than that in Examples 1 and 2. Due to the reduction of amino acid surfactant, the anti-caking effect and detergency performance of the baking soda detergent are weakened. In Comparative Example 6, the amount of amino acid surfactant added exceeds 3%, and the foam increases during washing, losing the low-foaming and easy-rinsing characteristics of the baking soda detergent. Moreover, when the amount of amino acid surfactant added is too high, the anti-caking effect deteriorates. The amino acid surfactant and baking soda are easily agglomerated after mixing and stirring, which is not conducive to production. Therefore, the optimal ratio of baking soda to amino acid surfactant addition is 99:1.

[0057] Performance experiments and results

[0058] Experiment 1

[0059] The anti-caking properties of packaged baking soda and "baking soda + amino acid surfactant" were investigated.

[0060] The baking soda cleaner prepared in Comparative Example 1 and the baking soda cleaner prepared in Example 1 were placed in different glass bottles with lids, divided into control glass bottles and experimental glass bottles. Both the control glass bottles and the experimental glass bottles were placed in a constant temperature and humidity chamber at 37°C and 85%RH for 24 hours, and the agglomeration phenomenon was observed. The experimental results are shown in FIG. Figure 2 As shown (the left picture is the control glass bottle, and the right picture is the experimental glass bottle).

[0061] according to Figure 2 It can be found that the baking soda cleaner with amino acid surfactant added (i.e., the experimental glass bottle) has no caking, while the pure baking soda caking (i.e., the control glass bottle) has obvious clumping. It can be found that the problem of baking soda agglomeration can be solved by adding amino acid surfactant and its anti-caking performance can be improved.

[0062] Experiment 2

[0063] The effect of baking soda and "baking soda + sodium lauroyl glutamate" on removing oil stains from the surface of apples was investigated after directly scrubbing the apples.

[0064] The baking soda cleaner (pure baking soda) prepared in Comparative Example 1 was used alone to scrub apples, and the baking soda cleaner (99% baking soda + 1% sodium lauroyl glutamate) prepared in Example 1 was used alone to scrub apples. The experimental results are shown in Table 1. Figure 3 (The two pictures arranged vertically on the left are apples washed with baking soda, and the two pictures arranged vertically on the right are apples washed with "baking soda + sodium lauroyl glutamate").

[0065] according to Figure 3It can be seen that pure baking soda is difficult to rub off. After scrubbing with baking soda and rinsing with water, there are still obvious water droplets on the apple that cannot be spread, indicating that there is wax that has not been removed. However, the baking soda cleaner added with sodium lauroyl glutamate is obviously easy to spread, rub off, and apply evenly. After scrubbing with baking soda and rinsing with water, no residual water droplets can be seen on the apple, indicating that the wax has been completely removed. Therefore, it can be concluded that the baking soda cleaner prepared in Example 1 has significantly improved oil removal ability compared to the baking soda cleaner prepared in Comparative Example 1.

[0066] Experiment 3

[0067] To investigate the oil (edible oil) removal capabilities of baking soda and "baking soda + sodium lauroyl glutamate".

[0068] Experimental methods:

[0069] 1. Add 5 drops of olive oil, 1g of baking soda cleaner prepared in Comparative Example 1, and 5ml of tap water to a clean aluminum pan, shake the aluminum pan to dissolve for about 2 minutes, and then rinse the aluminum pan with tap water.

[0070] 2. Add 5 drops of olive oil, 2 g of baking soda cleaner prepared in Example 1, and 5 ml of tap water to a clean aluminum pan, shake the pan to dissolve for about 2 minutes, and then rinse the pan with tap water.

[0071] The experimental results are shown in Figure 4 (The two aluminum plates arranged vertically in the left picture are aluminum plates cleaned with pure baking soda, and the two aluminum plates arranged vertically in the right picture are aluminum plates cleaned with "baking soda + amino acid surfactant"). In "1", before rinsing, pure baking soda was placed in the aluminum plate alone, and the oil was not emulsified. After rinsing, obvious water droplets were seen that could not spread out, indicating that there was oil that had not been washed off.

[0072] In "2", before rinsing, the water and oil were emulsified, and there were no water droplets on the aluminum plate after rinsing, indicating that the oil was washed away. It can be seen that the oil removal ability of baking soda is significantly improved after adding amino acid surfactants.

[0073] Experiment 4

[0074] To investigate the ability of baking soda and "baking soda + sodium lauroyl glutamate" to remove pesticide residues.

[0075] Experimental Principle: Radar Insecticide (0.16% total active ingredients: cypermethrin 0.1%, prallethrin 0.03%, and cypermethrin 0.03%) is used as a source of pesticide residues. This insecticide has a similar composition to the pesticide emulsions used in the pesticide residue removal experiments in fruit and vegetable washing standards (GB 2491-2009). Therefore, this insecticide is dropped into water, followed by a certain amount of the test sample. The mixture is shaken evenly, then allowed to stand, and the emulsification of the pesticide oil layer is observed. If a distinct oil-water separation is observed, the sample is unable to emulsify the pesticide, indicating poor pesticide residue removal effectiveness. If the added sample effectively emulsifies the pesticide, it indicates good pesticide residue removal effectiveness.

[0076] Experimental steps:

[0077] Take three 300ml beakers, put 50ml of tap water in each beaker, and add the same number of drops of insecticide to each beaker. No sample is added to the first cup, which is a blank group. The same amount of pure baking soda cleaner prepared in Comparative Example 1 and baking soda cleaner prepared in Example 1 are added to the other two cups, respectively. Shake the cups, then let them stand and observe the emulsification.

[0078] Experimental results reference Figure 5 , Figure 5 Center, Left Figure 1 Beaker for blank group, left Figure 2 Beaker for adding baking soda cleaner prepared in Comparative Example 1, right Figure 1 The experimental results of the beaker containing the baking soda cleaner prepared in Example 1 are divided into three parts:

[0079] 1. The first cup "water + pesticide": the water and oil are not emulsified, and the oil layer is obvious after standing;

[0080] 2. The second cup is "water + pesticide + pure baking soda": the water layer is slightly reduced, indicating that a small amount of pesticide is emulsified, proving that baking soda has an emulsifying effect on oil;

[0081] 3. In the third cup, "water + pesticide + 99% baking soda + 1% sodium lauroyl glutamate": The water layer significantly decreased, and the water and oil were emulsified together, indicating that the addition of amino acid surfactants to baking soda significantly improved its emulsification of the pesticide. Therefore, adding amino acid surfactants to baking soda significantly enhances its pesticide removal ability.

[0082] In summary, the present invention combines baking soda with an amino acid surfactant, which not only solves the problem of baking soda clumping but also effectively enhances its cleaning effectiveness, especially in removing pesticide residues. This improves the product's appearance, making it more convenient and easier to use, while maintaining a higher degree of naturalness and safety.

[0083] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A baking soda amino acid surfactant composite powdered detergent, characterized in that: The cleaning agent is composed of baking soda and an amino acid surfactant; the amino acid surfactant is sodium lauroyl glutamate; The weight ratio of baking soda to sodium lauroyl glutamate is 99:1; The preparation method of the cleaning agent comprises the following steps: dry-mixing the baking soda and the amino acid surfactant, and stirring the mixture to obtain the cleaning agent.

2. The baking soda amino acid surfactant composite powdered detergent according to claim 1, characterized in that: The purity of the baking soda is ≥99.0%.

3. The baking soda amino acid surfactant composite powdered detergent according to claim 2, characterized in that: The purity of the sodium lauroyl glutamate is ≥95%.

4. The method for preparing the baking soda amino acid surfactant composite powdered detergent according to any one of claims 1 to 3, wherein: The preparation method comprises: The baking soda and the amino acid surfactant are dry-mixed and stirred to prepare a cleaning agent.

5. The method for preparing the baking soda amino acid surfactant composite powdered detergent according to claim 4, wherein: The stirring time is 1-3 minutes.

6. The method for preparing the baking soda amino acid surfactant composite powdered detergent according to claim 4, wherein: A double-cone vertical mixer was used for the stirring.

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