Production process of amino acid surfactant and application of amino acid surfactant in production of laundry detergent

Abstract

The invention discloses a production process of an amino acid surfactant and an application of the amino acid surfactant in laundry detergent production, and relates to the technical field of daily chemical products, a continuous production mode is mainly adopted to avoid the repeated crystallization and dissolution process, an intermediate is purified through a distillation method and an ultrafiltration membrane filtration method, and the yield of the product is improved. The method has the advantages that the purity influence caused by a continuous production mode is avoided, the laundry detergent is directly produced in the reaction kettle in the amino acid production step d, the steps of multi-step heating and cooling are avoided, and the waste of energy is avoided, so that the production cost is reduced while the production efficiency is greatly improved. Compared with the prior art, the method has the remarkable advantages of high production efficiency and low production cost.

Description

Technical Field

[0001] The invention relates to the technical field of daily chemical products, in particular to an amino acid production process and application thereof in the production of laundry detergent. Background Art

[0002] Amino acid surfactants are amino acid salts (sodium salt, potassium salt, triethanolamine salt) of coconut oil (or laurel oil or palm oil) (such as glutamic acid, glycine, etc.) with foaming and cleaning capabilities. Weakly acidic amino acid surfactants have a pH value close to that of human skin, and amino acids are the basic substances that make up proteins, so they are gentle and skin-friendly, and can be used with confidence on most sensitive skin. The name structure of amino acid surfactants usually follows the rule of certain acyl (lauroyl, coconut oil acyl) + certain acid (glutamic acid, sarcosine) + sodium / potassium, and sodium lauroyl glutamate is one of them. Amino acid surfactants are based on hydrophilic amino acids, and are formed by combining hydrophobic and lipophilic long-chain alkyl groups on the amino group. They are a new type of green and environmentally friendly surfactant derived from renewable biomass, and are an upgraded product of traditional surfactants. Amino acid surfactants not only have a wide range of biomass raw materials, few toxic side effects, mild properties, low irritation, good biodegradability, and green production processes, but also their good emulsification, wetting, solubilization, dispersion, foaming and other properties are currently attracting much attention and are gradually being used in many fields such as washing, personal care and food industry.

[0003] The current production process often produces various raw materials in multiple steps, and then further generates intermediates through different raw materials, and then obtains the final product step by step through multiple steps, and then uses the final product as a raw material to produce the corresponding product. Due to the numerous steps, and the production process of the intermediate as a raw material, it is often necessary to go through repeated crystallization and dissolution steps, and repeated heating and cooling processes, which greatly reduces production efficiency and wastes energy. Summary of the invention

[0004] The present invention is aimed at the above technical problems, and in order to avoid repeated crystallization and dissolution steps, as well as repeated heating and cooling processes, provides a more convenient, fast, efficient and energy-saving amino acid production process, and further combines it with the production of laundry detergent.

[0005] The present invention is achieved through the following technical solutions:

[0006] The production process of amino acid surfactant comprises the following steps:

[0007] a. After the amino acid production strain is expanded and cultured in the culture medium to 1% of the fermentation tank capacity, it is added together with the culture medium into a fermentation tank equipped with a filter device at the bottom liquid outlet, and water of half the capacity of the fermentation tank is added, and urea of ​​1% by weight of half the water volume of the fermentation tank and 80% acetic acid of 0.5% by weight of half the water volume of the fermentation tank are added, and then the rice bran after cleaning and sterilization is added into the fermentation tank until it is full, and the pH is adjusted to weak alkaline, and the fermentation temperature is controlled to 30℃±0.5℃, and the ventilation is controlled to 1vvm. After reacting for 24 hours, the pH value is adjusted to neutral, and the fermentation temperature is controlled to 40℃±0 .5℃, the ventilation volume is controlled at 2.5vvm, and after fermentation for another 24 hours, the fermentation liquid is filtered and released, and water is added from the top in equal amounts, and the amino acid content in the filtered and released fermentation liquid is monitored at any time. When it is lower than 130g / L, the liquid outlet at the bottom of the fermentation tank is closed, and water is stopped from being added. The washed and sterilized rice bran is added to fill the tank, and the fermentation temperature is controlled at 30℃±0.5℃, and the ventilation volume is controlled at 1vvm. After the reaction for 24 hours, the fermentation temperature is controlled at 40℃±0.5℃, and the ventilation volume is controlled at 2.5vvm. After fermentation for another 24 hours, the fermentation liquid is filtered and released again, and the cycle is repeated;

[0008] b. Add NaOH to the filtrate in step a until the pH value reaches 6.7, let stand and control the temperature to 60°C ± 0.5°C, centrifuge and filter through an ultrafiltration membrane to obtain a clarified fermentation broth;

[0009] c. Add natural vegetable oil, water and a catalyst into an autoclave, perform a hydrolysis reaction under high temperature and high pressure conditions, and after 30 minutes, separate the desired saturated fatty acids from the hydrolyzate by distillation;

[0010] d. The clarified fermentation liquid obtained in step b and the saturated fatty acids obtained in step c are mixed in proportion and added to the reactor, the temperature is raised to 80° C., the pH value is adjusted to 7.0, and the desired final product is obtained after stirring for 30 minutes.

[0011] Furthermore, the amino acid in step a of the amino acid surfactant production process is glutamic acid, the amino acid producing bacteria are mainly Corynebacterium glutamicum or Brevibacterium lactose fermentation, NaOH is used when adjusting the pH value to weak alkalinity, the weak alkaline pH value is 8.7-9.0, and the preferred pH value is 8.75.

[0012] Furthermore, the clarified fermentation broth in step b of the amino acid surfactant production process is a sodium glutamate solution.

[0013] Furthermore, the saturated fatty acid in step c of the amino acid surfactant production process is lauric acid, the natural vegetable oil is one of coconut oil, litsea cubeba kernel oil, and palm kernel oil, preferably coconut oil, the high temperature is 250°C±5°C, the pressure reaches 5MPa±0.2MPa, and the catalyst is organic tin, preferably dibutyltin dilaurate.

[0014] Furthermore, the final product in step d of the amino acid surfactant production process is sodium lauroyl glutamate, and the volume ratio of the sodium glutamate solution to lauric acid is 10:7.

[0015] The present invention also provides an application of an amino acid surfactant production process in the production of laundry detergent, comprising the following steps:

[0016] A. Continue to stir the final product in the reactor in step d of the amino acid production process, and add the composite surfactant and stabilizer when the temperature drops to 60°C, and continue stirring;

[0017] B. When the temperature further drops to 50°C, add detergent;

[0018] C. When the temperature drops further to 40°C, add the base oil;

[0019] D. When the temperature drops further to 35°C, add the middle flavor;

[0020] E. When the temperature drops to 25°C, add the top flavor and continue stirring for 30 minutes. Then observe the reactor until all the raw materials are dissolved. Use propylene glycol and sodium chloride to adjust the viscosity to 400-800cps and then start packaging.

[0021] Furthermore, in the application of the amino acid surfactant production process in the production of laundry detergent, the compound surfactant in step A is APG extracted from corn, and the stabilizer is sodium citrate.

[0022] Furthermore, in the application of the amino acid surfactant production process in the production of laundry detergent, the builder in step B includes one or more of enzymes, proteases, cellulases, and lipases.

[0023] Furthermore, in the application of the amino acid surfactant production process in laundry detergent production, the essential oil in step C is one or more of black spruce essential oil, vanilla essential oil, sandalwood essential oil, musk essential oil, orange oil, and tea seed essence, including at least black spruce essential oil.

[0024] Furthermore, in the application of the amino acid surfactant production process in the production of laundry detergent, the middle-note fragrance in step D is one or more of rose essential oil, jasmine essential oil, lavender essential oil, and orange blossom essential oil.

[0025] Furthermore, in the application of the amino acid surfactant production process in the production of laundry detergent, the top note essence in step E is one or more of citrus essential oil, mint essential oil, and lavender essential oil.

[0026] Compared with the prior art, the above technical scheme can produce laundry detergent that is 5 times more concentrated, and according to the national standard, the surfactant can reach 37%, which is more than 5 times that of ordinary laundry detergent. It contains a variety of natural active ingredients (natural and mild amino acid surfactants that are closest to the human body, corn extract essence apg surfactants, natural biological enzymes (enzymes), and special additions of essential oils extracted from Arctic black cloud fir), 3 natural enzymes (protease, cellulase, lipase), and 2 times the detergency (the national standard comprehensive detergency requirement is 3, and our 7.3 is more than 2 times). This product uses perfume fragrance, and a variety of fragrances including floral, fruity, woody, and composite fragrances are available. Each fragrance truly achieves rich levels of front, middle, and back fragrance, and the fragrance is advanced and unique, without conflicting fragrances, suitable for different dressing styles. It is divided into two categories: light fragrance and strong fragrance. The light fragrance type has a rich fragrance after washing and drying, but only a light fragrance remains after drying, which does not affect the use with perfume at all, and there is no mixing or conflict; the strong fragrance type not only has a strong fragrance after washing and drying, but also lasts for 48 hours after drying, which can replace perfume to a certain extent. In addition, this product does not add thickeners, fluorescent agents, or foaming agents. Pure material, no thickeners and foaming agents are needed. At the same time, this product uses skin care grade raw materials to develop laundry detergent, and uses natural and safe amino acids, apg and other plant surfactants to replace the petrochemical-based surfactants of traditional laundry detergents. It is gentle and residue-free, and is environmentally friendly and degradable. The precious Arctic black spruce essential oil is specially selected to extract essential oils to achieve sterilization and mite removal.

[0027] The present invention makes full use of the lower requirements of the final product on the purity of raw materials, thereby reducing multiple purification steps, adopting a continuous production method to avoid repeated crystallization and dissolution processes, and purifying intermediates through distillation and ultrafiltration membrane filtration methods, thereby avoiding the purity impact caused by the continuous production method, and directly producing laundry detergent in the reactor in the amino acid production step d, thereby avoiding energy waste, improving production efficiency and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of a production line for applying the amino acid surfactant production process of the present invention to the production of laundry detergent. DETAILED DESCRIPTION

[0029] The present invention is further described below by taking sodium lauroyl glutamate laundry detergent as an example in conjunction with the accompanying drawings. The described embodiments are only part of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0030] Example 1

[0031] After the glutamicum is expanded and cultured to 50L in a culture medium, it is added together with the culture medium into a 5000L fermentation tank equipped with a filter device at the bottom outlet, 2500L of water, 25kg of urea and 12.5kg of 80% acetic acid are added, and then the washed and sterilized rice bran is added into the fermentation tank until it is full, the pH is adjusted to 8.75, the fermentation temperature is controlled to 30℃±0.5℃, the ventilation volume is controlled to 1vvm, and after reacting for 12 hours, the pH value is adjusted to neutral, and the fermentation temperature is controlled to 40℃±0 .5℃, the ventilation volume is controlled at 2.5vvm. After another 24 hours of fermentation, the fermentation liquid is filtered and released to the liquid preparation tank at a flow rate of 50ml / s, and water is added from the top in equal amounts. The amino acid content in the fermentation liquid released from the filtration device at the bottom of the fermentation tank is monitored every 15 minutes. When it is lower than 130g / L, the liquid outlet at the bottom of the fermentation tank is closed, the water is stopped, and the washed and sterilized rice bran is added to fill the tank. The fermentation temperature is controlled at 30℃±0.5℃, the ventilation volume is controlled at 1vvm. After 24 hours of reaction, the fermentation temperature is controlled at 4 0℃±0.5℃, the ventilation volume is controlled at 2.5vvm, and after fermentation for another 24 hours, the fermentation liquid is filtered again and released to the liquid preparation tank, and the cycle is repeated. When the liquid preparation tank is filled to 80% of its capacity, the liquid preparation tank is replaced, and NaOH is added to the liquid preparation tank containing the fermentation liquid until the pH value reaches 6.7. It is allowed to stand for more than half an hour, and the temperature is controlled to 60℃±0.5℃. After centrifugation, it is filtered through an ultrafiltration membrane to obtain a clarified fermentation liquid for use. While producing the fermentation liquid, 6L of coconut oil, 2L of water, and 100ml of dibutyltin dilaurate are added. Add to a 10L autoclave, hydrolyze at 250°C ± 5°C, 5MPa ± 0.2MPa, 30 minutes later, separate lauric acid from the hydrolyzate by distillation, add to a 5000L reactor, when the total amount of lauric acid reaches 700L, add 1000L of filtered clarified fermentation broth, heat to 80°C, adjust pH to 7.0, stir for 15 minutes, 20 minutes, 25 minutes, 30 minutes, 35 minutes, 40 minutes, and take samples to measure the concentration of sodium lauroyl glutamate. The measured data are shown in Table 1 below.

[0032] Table 1 Concentration of sodium lauroyl glutamate at different reaction times

[0033] Reaction time (minutes) 15 20 25 30 35 40 First concentration (%) 68.73 75.84 89.37 94.73 95.01 94.95 Second concentration (%) 65.29 77.17 88.96 94.68 94.92 95.12

[0034] As can be seen from the above table, when the reaction conditions are met, the concentration of sodium lauroyl glutamate reaches a stable level of about 95% after 30 minutes of reaction, which meets the raw material standards for the next step of laundry detergent production, and other unreacted products are mainly sodium glutamate and lauric acid from pure natural sources, which will not affect the quality of the laundry detergent product when used in the production of laundry detergent. Therefore, when the temperature of the reactor reaches 80°C and the pH value is adjusted to 7.0, the timing starts, and the solution obtained after 30 minutes is the sodium lauroyl glutamate solution.

[0035] Example 2

[0036] After stirring the solution in the reactor at 80°C and pH 7.0 for 30 minutes in Example 1, stop heating and continue stirring. When the temperature drops to 60°C, add 50% APG extracted from corn, a total of 1600L, 50Kg of sodium citrate, and continue stirring. When the temperature further drops to 50°C, add 5L enzyme, 3L protease, 3L cellulase, and 5L lipase, and continue stirring. When the temperature further drops to 40°C, add 750ml black spruce essential oil and 250ml tea seed essential oil, and continue stirring. When the temperature further drops to 35°C, add 1L rose essential oil, and continue stirring. When the temperature drops to 25°C, add 500ml peppermint essential oil, and continue stirring for 30 minutes. Observe the reactor again until all the raw materials are dissolved, and use propylene glycol and sodium chloride to adjust the viscosity to 400-800cps before packaging. The key indicators of the amino acid laundry detergent are shown in Table 2 below.

[0037] Table 2 Key indicators of amino acid laundry detergent

[0038] index National Standard Ordinary concentrated laundry detergent The laundry detergent of the present invention Surfactant content 15% (total active ingredients) 7％ 37％ Sterilization rate 90％ 90％～95％ 99.999％ Mite removal rate 80％ 80％～90％ 100％ Rinse until no residue remains No requirement Three to four times twice Detergency 3 3～3.5 7.3 Fluorescent agent 5mg / Kg 0~5mg / Kg 0

[0039] As can be seen from the above table, the laundry detergent produced by the production method of the present invention can reach a surfactant content that is at least five times that of ordinary laundry detergent, is easy to rinse, and has a detergency that is more than twice that of ordinary laundry detergent.

[0040] Example 3

[0041] Production of sandalwood rose laundry detergent, stop heating the solution obtained in the reactor after stirring for 30 minutes at 80°C and pH 7.0 in Example 1, and continue stirring. When the temperature drops to 60°C, add 50% APG extracted from corn, a total of 1600L, 50Kg of sodium citrate, and continue stirring. When the temperature further drops to 50°C, add 5L enzyme, 3L protease, 3L cellulase, 5L lipase, and continue stirring. When the temperature further drops to 40°C, add 500ml black spruce essential oil and 500ml sandalwood essential oil, and continue stirring. When the temperature further drops to 35°C, add 250ml rose essential oil, and continue stirring. When the temperature drops to 25°C, add 300ml citrus essential oil and 300ml peppermint essential oil, and continue stirring for 30 minutes. Observe the reactor again until all the raw materials are dissolved, and use propylene glycol and sodium chloride to adjust the viscosity to 400-800cps for packaging. The key indicators of the sandalwood rose laundry detergent are measured as shown in Table 3 below.

[0042] Table 3 Key indicators of sandalwood rose laundry detergent

[0043] index National Standard Ordinary concentrated laundry detergent The laundry detergent of the present invention Surfactant content 15% (total active ingredients) 7％ 37％ Sterilization rate 90％ 90％～95％ 99.999％ Mite removal rate 80％ 80％～90％ 100％ Rinse until no residue remains No requirement Three to four times twice Detergency 3 3～3.5 7.3 Fluorescent agent 5mg / Kg 0~5mg / Kg 0

[0044] As can be seen from the above table, the sandalwood rose laundry detergent produced by the production method of the present invention can reach a surfactant content at least five times that of ordinary laundry detergent, is easy to rinse, and has a detergency more than twice that of ordinary laundry detergent.

[0045] Example 4

[0046] The production of jasmine fruit fragrance laundry detergent, the solution obtained in the reactor after stirring for 30 minutes at 80 ℃ and pH value of 7.0 in Example 1 is stopped from heating and continued to stir, and when the temperature drops to 60 ℃, 50% APG extracted from corn is added, a total of 1600L, sodium citrate 50Kg, and stirring is continued. When the temperature further drops to 50 ℃, 5L enzyme, 3L protease, 3L cellulase, 5L lipase are added, and stirring is continued. When the temperature further drops to 40 ℃, 1L black spruce essential oil and 100ml orange oil are added, and stirring is continued. When the temperature further drops to 35 ℃, 750ml jasmine essential oil is added, and stirring is continued. When the temperature drops to 25 ℃, 500ml citrus essential oil is added, and stirring is continued for 30 minutes. The reactor is observed again until all the raw materials are dissolved, and the viscosity is adjusted to 400-800cps using propylene glycol and sodium chloride, and then it can be packaged. The key indicators of the jasmine fruit fragrance laundry detergent are measured as shown in Table 4 below.

[0047] Table 4 Key indicators of jasmine fruit fragrance laundry detergent

[0048] index National Standard Ordinary concentrated laundry detergent The laundry detergent of the present invention Surfactant content 15% (total active ingredients) 7％ 37％ Sterilization rate 90％ 90％～95％ 99.999％ Mite removal rate 80％ 80％～90％ 100％ Rinse until no residue remains No requirement Three to four times twice Detergency 3 3～3.5 7.3 Fluorescent agent 5mg / Kg 0~5mg / Kg 0

[0049] It can be seen from the above table that the jasmine fruit-scented laundry detergent produced by the production method of the present invention can reach a surfactant content at least five times that of ordinary laundry detergent, is easy to rinse, and has a detergency more than twice that of ordinary laundry detergent.

[0050] Example 5

[0051] Production of lavender musk laundry detergent, the solution obtained in the reactor after stirring for 30 minutes at 80 ° C and pH 7.0 in Example 1 is stopped from heating and continued to stir, and when the temperature drops to 60 ° C, 50% APG extracted from corn is added, a total of 1600L, sodium citrate 50Kg, and continuous stirring is added. When the temperature further drops to 50 ° C, 5L enzyme, 3L protease, 3L cellulase, 5L lipase are added, and stirring is continued. When the temperature further drops to 40 ° C, 900ml black spruce essential oil and 100ml musk essential oil are added, and stirring is continued. When the temperature further drops to 35 ° C, 750ml lavender essential oil is added, and stirring is continued. When the temperature drops to 25 ° C, 500ml peppermint essential oil is added, and stirring is continued for 30 minutes, and the reactor is observed again until the raw materials are completely dissolved, and the viscosity is adjusted to 400-800cps using propylene glycol and sodium chloride, and then it can be packaged. The key indicators of the lavender musk laundry detergent are measured as shown in Table 5 below.

[0052] Table 5 Key indicators of lavender musk laundry detergent

[0053] index National Standard Ordinary concentrated laundry detergent The laundry detergent of the present invention Surfactant content 15% (total active ingredients) 7％ 37％ Sterilization rate 90％ 90％～95％ 99.999％ Mite removal rate 80％ 80％～90％ 100％ Rinse until no residue remains No requirement Three to four times twice Detergency 3 3～3.5 7.3 Fluorescent agent 5mg / Kg 0~5mg / Kg 0

[0054] As can be seen from the above table, the lavender musk laundry detergent produced by the production method of the present invention can reach a surfactant content at least five times that of ordinary laundry detergent, is easy to rinse, and has a detergency more than twice that of ordinary laundry detergent.

[0055] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0056] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A process for producing an amino acid surfactant, characterized in that: The steps include: a. After the amino acid production strain is expanded and cultured in a culture medium to 1% of the fermentation tank capacity, add it together with the culture medium into a fermentation tank equipped with a filter device at the bottom outlet, add half of the fermentation tank capacity of water, and add 1% of urea by weight of half of the water in the fermentation tank and 0.5% of 80% acetic acid by weight of half of the water in the fermentation tank. Then add the cleaned and sterilized rice bran to the fermentation tank until it is full, adjust the pH to weak alkalinity, control the fermentation temperature to 30°C ± 0.5°C, and control the ventilation volume to 1vvm. After reacting for 24 hours, adjust the pH value to neutrality, control the fermentation temperature to 40°C ± 0.5°C, and control the ventilation volume to 2.5vvm. After fermenting for another 24 hours, filter and release the fermented liquid, and add water in equal amounts from the top, and monitor the amino acid content in the filtered and released fermented liquid at any time. When it is lower than 130g / L, close the liquid outlet at the bottom of the fermentation tank, stop adding water, add the cleaned and sterilized rice bran to fill the tank, and repeat the fermentation part in this step; b. Add NaOH to the filtrate in step a until the pH value reaches 6.7, let stand and control the temperature to 60°C ± 0.5°C, centrifuge and filter through an ultrafiltration membrane to obtain a clarified fermentation broth; c. Add natural vegetable oil, water and a catalyst into an autoclave, perform a hydrolysis reaction under high temperature and high pressure conditions, and after 30 minutes, separate the desired saturated fatty acids from the hydrolyzate by distillation; d. The clarified fermentation liquid obtained in step b and the saturated fatty acids obtained in step c are mixed in proportion and added to the reactor, the temperature is raised to 80° C., the pH value is adjusted to 7.0, and the desired final product is obtained after stirring for 30 minutes.

2. The amino acid surfactant production process according to claim 1, characterized in that: The amino acid in step a is glutamic acid, the amino acid producing bacteria is Corynebacterium glutamicum or Brevibacterium lactofermentum, NaOH is used when adjusting the pH value to weak alkalinity, and the weak alkaline pH value is 8.7-9.

0.

3. The amino acid surfactant production process according to claim 2, characterized in that: The clarified fermentation broth in step b is a sodium glutamate solution.

4. The amino acid surfactant production process according to claim 1, characterized in that: The saturated fatty acid in step c is lauric acid, the natural vegetable oil is one of coconut oil, litsea cubeba kernel oil and palm kernel oil, the high temperature is 250°C±5°C, the pressure reaches 5MPa±0.2MPa, and the catalyst is organotin.

5. The amino acid surfactant production process according to claim 3 or 4, characterized in that: The final product in step d is sodium lauroyl glutamate, and the volume ratio of the sodium glutamate solution to lauric acid is 10:

7.

6. Application of the amino acid surfactant production process in the production of laundry detergent, characterized in that: The steps include: A. Continue stirring the final product in the reactor in step d of claim 1, and add the composite surfactant and stabilizer when the temperature drops to 60° C., and continue stirring; B. When the temperature further drops to 50°C, add detergent; C. When the temperature drops further to 40°C, add the base oil; D. When the temperature drops further to 35°C, add the middle flavor; E. When the temperature drops to 25°C, add the top flavor and continue stirring for 30 minutes. Observe the reactor until all the raw materials are dissolved. Use propylene glycol and sodium chloride to adjust the viscosity to 400-800cps and package it.

7. The application of the amino acid surfactant production process according to claim 6 in the production of laundry detergent, characterized in that: The compound surfactant in step A is APG extracted from corn, and the stabilizer is sodium citrate.

8. The application of the amino acid surfactant production process according to claim 6 in the production of laundry detergent, characterized in that: The builder in step B includes one or more of enzyme, protease, cellulase and lipase.

9. The application of the amino acid surfactant production process according to claim 6 in the production of laundry detergent, characterized in that: The essential oil in step C includes black spruce essential oil, and one or more of vanilla essential oil, sandalwood essential oil, musk essential oil, orange oil, and tea seed essence.

10. The application of the amino acid surfactant production process according to claim 6 in the production of laundry detergent, characterized in that: The middle note essence in step D is one or more of rose essential oil, jasmine essential oil, lavender essential oil, and orange blossom essential oil, and the top note essence in step E is one or more of citrus essential oil, peppermint essential oil, and lavender essential oil.

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