A kind of blue washing powder and preparation method thereof

Abstract

The present invention provides a blue washing powder and a preparation method thereof, and relates to the technical field of washing powder. The blue washing powder provided by the present invention comprises the following components by mass percentage: 10-20% anionic surfactant, 5-15% nonionic surfactant, 0.5-5% enzyme preparation, 3-8% bleaching agent, 5-15% builder, 5-15% chelating agent, 0.1-2% fragrance, 20-65% filler, 0.5-2% phycocyanin complex; wherein the phycocyanin complex comprises a phycocyanin-based core and a water-soluble coating material coated on the outside of the phycocyanin-based core. The present invention not only has a natural blue color, but also can prevent the washing powder from fading during storage.

Description

Technical Field

[0001] The invention relates to the technical field of washing powder, in particular to a blue washing powder and a preparation method thereof. Background Art

[0002] Washing powder is one of the most common cleaning products in daily life. It is mainly used to wash clothes, remove stains, and keep the surface of clothes clean and hygienic. Its main ingredients include surfactants, builders, enzyme preparations, brighteners, fragrances and fillers, etc. Through the synergistic effect of these ingredients, it can effectively remove various stains and bacteria on clothes, and at the same time give clothes a fresh fragrance. Blue washing powder is a special product among washing powders. It is mainly blue powder. This blue color is usually achieved by adding blue pigments or blue dyes to the washing powder.

[0003] As people's living standards continue to improve, the requirements for washing products are gradually diversified, so blue washing powder has been widely used in the market. However, due to the pigment components in blue washing powder, it is easy to fade during storage, and the blue pigment is easy to migrate to light-colored clothes during washing, causing clothing staining. Therefore, it is urgent to provide a solution to improve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a blue washing powder and a preparation method thereof, which not only has a natural blue color but also can prevent the washing powder from fading during storage.

[0005] In a first aspect, the present invention provides a blue laundry detergent, comprising the following components by mass percentage: 10-20% anionic surfactant, 5-15% nonionic surfactant, 0.5-5% enzyme preparation, 3-8% bleaching agent, 5-15% detergent aid, 5-15% chelating agent, 0.1-2% fragrance, 20-65% filler, 0.5-2% phycocyanin complex; wherein the phycocyanin complex comprises a phycocyanin core and a water-soluble coating material coated on the outside of the phycocyanin core.

[0006] The blue washing powder provided by the present invention is added with a phycocyanin complex, wherein the phycocyanin core is a natural blue dye, which is not only non-toxic and harmless, but also has biological activity and antioxidant properties. It can not only give the washing powder a pure natural blue color, but also improve the retention time of the blue color of the washing powder and prevent fading by improving the storage activity of the phycocyanin itself. In addition, as a biological protein, the phycocyanin can have a certain protective effect on clothing fibers during the washing process, and its water-soluble coating material is conducive to breaking and releasing the phycocyanin during the washing process. At the same time, the enzyme preparation can hydrolyze and remove excess phycocyanin on the clothes, thereby preventing the clothes from being stained.

[0007] Optionally, the preparation method of the phycocyanin complex comprises: mixing a phycocyanin solution with a sodium carboxymethyl cellulose solution, stirring and emulsifying to obtain a mixed emulsion; and spray-drying the mixed emulsion to obtain the phycocyanin complex.

[0008] Optionally, after the phycocyanin solution and the sodium carboxymethyl cellulose solution are mixed, the mixing ratio of the phycocyanin to the sodium carboxymethyl cellulose is 1:(3-8).

[0009] Optionally, when the phycocyanin solution and the sodium carboxymethylcellulose solution are mixed, the phycocyanin solution is an aqueous solution with a mass fraction of 0.1-2% of phycocyanin, and the sodium carboxymethylcellulose solution is an aqueous solution with a mass fraction of 3-5% of sodium carboxymethylcellulose.

[0010] Optionally, the process of stirring and emulsifying to obtain the mixed emulsion includes: subjecting the mixed solution to shear stirring at 2-6° C. for 30-40 minutes, and then ultrasonically treating the mixed solution at an ultrasonic frequency of 20 kHz for 5-10 minutes to obtain the mixed emulsion.

[0011] Optionally, when the mixed emulsion is spray-dried to obtain the phycocyanin complex, the method includes: adding a protective agent to the mixed emulsion for ultrasonic dispersion, and then spray-drying the mixed emulsion at an inlet air temperature of 120-150°C, an outlet air temperature of 60-80°C, a spray pressure of 4-6 bar, and an atomization speed of 18000-22000 rpm to obtain a phycocyanin complex with a particle size of 10-50 μm.

[0012] Optionally, the protective agent includes an antioxidant, a light stabilizer and a buffer; wherein the antioxidant includes at least one of tocopherol, ascorbic acid and sodium ascorbate, the light stabilizer includes benzophenone, and the buffer includes sodium citrate.

[0013] Optionally, the anionic surfactant includes at least one of sodium dodecylbenzene sulfonate, sodium dodecyl sulfate, sodium α-olefin sulfonate, sodium alkyl ether sulfate, and lauryl amide propyl betaine.

[0014] Optionally, the nonionic surfactant includes at least one of fatty alcohol polyoxyethylene ether, polyethylene glycol ether ester, fatty acid ethoxylate, alkylphenol polyoxyethylene ether, and polyethylene glycol polypropylene glycol block copolymer.

[0015] Optionally, the enzyme preparation comprises protease and amylase in a mass mixing ratio of 1:(0.5-0.8).

[0016] Optionally, the bleaching agent includes at least one of sodium percarbonate, sodium perborate and potassium persulfate.

[0017] Optionally, the builder includes at least one of sodium silicate, sodium carbonate, trisodium phosphate, borax and sodium citrate.

[0018] Optionally, the chelating agent includes at least one of disodium ethylenediaminetetraacetic acid, citric acid, disodium adipate, polycarboxylates, and N,N-bis(hydroxyethyl)glycine.

[0019] Optionally, the flavoring agent includes at least one of lemon essential oil, lavender essential oil, rose essential oil, and peppermint essential oil.

[0020] Optionally, the filler includes at least one of sodium sulfate, sodium chloride, calcium carbonate, kaolin and diatomaceous earth.

[0021] In a second aspect, the present invention also provides a method for preparing a blue washing powder, comprising the following steps: stirring and mixing anionic surfactants, nonionic surfactants, enzyme preparations, bleaching agents, detergent builders and chelating agents to obtain a mixture; keeping the mixture at 40-50° C. for 2-3 hours and stirring and mixing it with a flavoring agent and a filler to obtain a secondary material; mixing the secondary material with a phycocyanin complex and drying it to obtain a blue washing powder.

[0022] Optionally, anionic surfactant, nonionic surfactant, enzyme preparation, bleaching agent, detergent and chelating agent are stirred and mixed, and then ground and sieved to obtain a mixture with an average particle size of 0.2-0.5 mm. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with general skills in the field to which the present invention belongs.

[0024] The embodiment of the present invention provides a blue laundry detergent, which comprises the following components by mass percentage: 10-20% anionic surfactant, 5-15% nonionic surfactant, 0.5-5% enzyme preparation, 3-8% bleaching agent, 5-15% detergent aid, 5-15% chelating agent, 0.1-2% fragrance, 20-65% filler, and 0.5-2% phycocyanin complex.

[0025] In fact, in blue washing powder, anionic surfactants as the main cleaning ingredients can effectively remove dirt and grease adhered to the surface of clothes, while non-ionic surfactants can effectively enhance the overall decontamination ability of washing powder. Enzyme preparations can enzymatically decompose biological pollution such as protein, fat and starch on clothes. Bleach can provide bleaching and antibacterial effects, thereby keeping clothes white and tidy. Detergents and chelating agents can soften water, prevent dirt from re-depositing, and prevent scale from depositing on clothes, which is beneficial to maintaining the cleaning effect. Fragrances can provide aromatic smell to washing powder and impart fragrance to the surface of clothes as the washing powder is cleaning. Fillers can adjust the volume and weight of washing powder products.

[0026] In some embodiments, the anionic surfactant used in the blue laundry detergent includes at least one of sodium dodecylbenzene sulfonate, sodium dodecyl sulfate, sodium α-olefin sulfonate, sodium alkyl ether sulfate, and lauryl amide propyl betaine.

[0027] In some embodiments, the nonionic surfactant used in the blue laundry detergent includes at least one of fatty alcohol polyoxyethylene ether, polyethylene glycol ether ester, fatty acid ethoxylate, alkylphenol polyoxyethylene ether, and polyethylene glycol polypropylene glycol block copolymer.

[0028] In some embodiments, the enzyme preparation used in the blue laundry detergent includes protease and amylase in a mass mixing ratio of 1:(0.5-0.8).

[0029] In some embodiments, the bleaching agent used in the blue laundry detergent includes at least one of sodium percarbonate, sodium perborate, and potassium persulfate.

[0030] In some embodiments, the builder used in the blue laundry detergent includes at least one of sodium silicate, sodium carbonate, trisodium phosphate, borax, and sodium citrate.

[0031] In some embodiments, the chelating agent used in the blue laundry detergent includes at least one of disodium ethylenediaminetetraacetic acid, citric acid, disodium adipate, polycarboxylates, and N,N-bis(hydroxyethyl)glycine.

[0032] In some embodiments, the fragrance used in the blue laundry detergent includes at least one of lemon essential oil, lavender essential oil, rose essential oil, and peppermint essential oil.

[0033] In some embodiments, the filler used in the blue laundry detergent includes at least one of sodium sulfate, sodium chloride, calcium carbonate, kaolin and diatomaceous earth.

[0034] Specifically, the phycocyanin core in the phycocyanin complex is a natural blue dye, which is not only non-toxic and harmless, but also has biological activity and antioxidant properties. It can not only give the washing powder a pure natural blue color, but also increase the storage activity of the phycocyanin itself, thereby increasing the retention time of the blue color of the washing powder and preventing fading. In addition, as a biological protein, phycocyanin can have a certain protective effect on clothing fibers during the washing process, and its water-soluble coating material is conducive to breaking and releasing phycocyanin during the washing process. At the same time, the enzyme preparation can hydrolyze and remove excess phycocyanin on the clothes, thereby preventing staining of the clothes.

[0035] In fact, the phycocyanin complex includes a phycocyanin core and a water-soluble coating material coated on the outside of the phycocyanin core. Specifically, the preparation method of the phycocyanin complex includes: mixing a phycocyanin solution with a sodium carboxymethyl cellulose solution, stirring and emulsifying to obtain a mixed emulsion; and spray drying the mixed emulsion to obtain the phycocyanin complex.

[0036] In some embodiments, after the phycocyanin solution is mixed with the sodium carboxymethyl cellulose solution, the mixing ratio of phycocyanin to sodium carboxymethyl cellulose is 1:(3-8). By mixing phycocyanin and sodium carboxymethyl cellulose at this mass ratio, it is beneficial for the sodium carboxymethyl cellulose to more evenly and comprehensively coat the surface of phycocyanin, which is beneficial to improving the structural stability of the phycocyanin complex.

[0037] In some embodiments, when the phycocyanin solution and the sodium carboxymethylcellulose solution are mixed, the phycocyanin solution is an aqueous solution with a mass fraction of 0.1-2% of phycocyanin, and the sodium carboxymethylcellulose solution is an aqueous solution with a mass fraction of 3-5% of sodium carboxymethylcellulose.

[0038] Specifically, the preparation method of the phycocyanin solution is: stirring and dissolving high-purity phycocyanin in deionized water at 2-6° C. to obtain the phycocyanin solution. In fact, the phycocyanin can be a commercially available product.

[0039] In some embodiments, the process of stirring and emulsifying to obtain a mixed emulsion includes: subjecting the mixed solution to shear stirring for 30-40 minutes at 2-6° C., and then ultrasonically treating the mixed solution at an ultrasonic frequency of 20 kHz for 5-10 minutes to obtain the mixed emulsion. The mixed solution can be formed into an emulsion after shear stirring, and the ultrasonic treatment is conducive to uniform mixing of sodium carboxymethyl cellulose and phycocyanin, thereby improving the coating uniformity.

[0040] In some embodiments, when the mixed emulsion is spray-dried to obtain the phycocyanin complex, the method includes: adding a protective agent to the mixed emulsion for ultrasonic dispersion, and then spray-drying the mixed emulsion at an inlet air temperature of 120-150°C, an outlet air temperature of 60-80°C, a spray pressure of 4-6 bar, and an atomization speed of 18000-22000 rpm to obtain a phycocyanin complex with a particle size of 10-50 μm.

[0041] Specifically, the protective agent includes an antioxidant, a light stabilizer and a buffer; wherein the antioxidant includes at least one of tocopherol, ascorbic acid and sodium ascorbate, the light stabilizer includes benzophenone, and the buffer includes sodium citrate. In fact, after the protective agent is added, the protective agent is evenly dispersed in the sodium carboxymethyl cellulose layer on the surface of the phycocyanin core, which has an anti-aging effect on the phycocyanin inside, and can further improve the storage performance of the blue washing powder and prevent the blue washing powder from fading.

[0042] The embodiment of the present invention also provides a method for preparing blue washing powder, comprising the following steps:

[0043] S1, stirring and mixing anionic surfactant, nonionic surfactant, enzyme preparation, bleaching agent, detergent builder and chelating agent to prepare a mixture;

[0044] S2, keeping the mixture at 40-50°C for 2-3h, stirring and mixing with flavoring agent and filler to obtain secondary material;

[0045] S3, mixing the secondary material with the phycocyanin complex and drying them to obtain blue laundry detergent.

[0046] In some embodiments, when executing step S1, the mixed material is ground and sieved to obtain a mixed material with an average particle size of 0.2-0.5 mm.

[0047] Example 1 to Example 5

[0048] Embodiments 1 to 5 of the present invention respectively provide a blue laundry detergent, and the components of each embodiment and their corresponding mass percentages are shown in Table 1 below.

[0049] Table 1 Components and contents of blue washing powder in Examples 1 to 5

[0050]

[0051] The anionic surfactant used in Examples 1 to 5 is specifically sodium dodecylbenzene sulfonate (sodium dodecylbenzene sulfonate with a purity of 99% purchased from Hubei Chengfeng Chemical Co., Ltd.).

[0052] The nonionic surfactant used in Examples 1 to 5 is fatty alcohol polyoxyethylene ether (selected from Wanhua WANOL I S1309).

[0053] The bleaching agent used in Examples 1 to 5 is sodium percarbonate.

[0054] The builder used in Examples 1 to 5 is sodium carbonate.

[0055] The chelating agent used in Examples 1 to 5 is disodium ethylenediaminetetraacetate (purchased from Henan Xinzhiyuan Chemical Products Co., Ltd.).

[0056] The flavoring agent used in Examples 1 to 5 is lavender essential oil (purchased from Guangzhou Puyifeng Biotechnology Co., Ltd.).

[0057] The filler used in Examples 1 to 5 is sodium sulfate.

[0058] The preparation method of the phycocyanin complex used in Examples 1 to 5 includes:

[0059] Y1. A 0.5% phycocyanin aqueous solution (purchased from Yangzhou Mufan Biotechnology Co., Ltd., item number MF-002773) and a 2% sodium carboxymethyl cellulose aqueous solution (purchased from Zibo Daoqin New Materials Co., Ltd., item number 9851) were mixed in a volume ratio of 1:1, stirred and emulsified at a speed of 500 rpm in a 4°C water bath environment, and then ultrasonically treated at an ultrasonic frequency of 20 kHz for 5 min to obtain a mixed emulsion;

[0060] Y2. The inlet air temperature of the spray dryer was set to 130°C, the outlet air temperature was set to 70°C, the atomizer speed was set to 20,000 rpm, the spray pressure was set to 5 bar, and the inlet liquid temperature of the mixed emulsion was set to 4°C. The mixed emulsion was spray dried to obtain a phycocyanin complex. The phycocyanin was purchased from Hubei Haijia Biological Co., Ltd.

[0061] Example 6

[0062] This embodiment 6 provides a blue laundry detergent, which is different from embodiment 3 in that the preparation method of the phycocyanin complex used in embodiment 6 includes:

[0063] Y1. A 0.5% phycocyanin aqueous solution (purchased from Zibo Mufan Biotechnology Co., Ltd., item number MF-002773) and a 2% sodium carboxymethyl cellulose aqueous solution (purchased from Zibo Daoqin New Materials Co., Ltd., item number 9851) were mixed in a volume ratio of 1:1, stirred and emulsified at a speed of 500 rpm in a 4°C water bath environment, and ultrasonically treated at a frequency of 20 kHz for 5 min using an ultrasonic device, and then tocopherol, benzophenone and sodium citrate were added for ultrasonic dispersion to obtain a mixed emulsion;

[0064] Y2. The inlet air temperature of the spray dryer was set to 130°C, the outlet air temperature was set to 70°C, the atomizer speed was set to 20,000 rpm, the spray pressure was set to 5 bar, and the inlet liquid temperature of the mixed emulsion was set to 4°C. The mixed emulsion was spray-dried to obtain a phycocyanin complex; wherein the mixing mass ratio of tocopherol, benzophenone, sodium citrate and phycocyanin was 0.3:0.2:0.1:1.

[0065] Example 7

[0066] This embodiment 7 provides a blue laundry detergent, which is different from embodiment 6 in that the preparation method of the phycocyanin complex used in embodiment 7 includes:

[0067] Y1. A 0.5% phycocyanin aqueous solution (purchased from Xinyang Mufan Biotechnology Co., Ltd., item number MF-002773), a 0.5% sodium alginate aqueous solution (purchased from Shenggong Biotechnology (Shanghai) Co., Ltd., item number A602116-0100) and a 2% sodium carboxymethyl cellulose aqueous solution (purchased from Zibo Daoqin New Materials Co., Ltd., item number 9851) were mixed in a volume ratio of 1:1:1, stirred and emulsified at a speed of 500 rpm in a 4°C water bath environment, and ultrasonically treated at a frequency of 20 kHz for 5 min using an ultrasonic device, and then tocopherol, benzophenone and sodium citrate were added for ultrasonic dispersion to obtain a mixed emulsion;

[0068] Y2. The inlet air temperature of the spray dryer was set to 130°C, the outlet air temperature was set to 70°C, the atomizer speed was set to 20,000 rpm, the spray pressure was set to 5 bar, and the inlet liquid temperature of the mixed emulsion was set to 4°C. The mixed emulsion was spray-dried to obtain a phycocyanin complex; wherein the mixing mass ratio of tocopherol, benzophenone, sodium citrate and phycocyanin was 0.3:0.2:0.1:1.

[0069] The preparation method of the blue washing powder in Embodiment 1 to Embodiment 7 comprises the following steps:

[0070] S1, mixing anionic surfactant, nonionic surfactant, enzyme preparation, bleaching agent, detergent builder and chelating agent in a mixer to obtain a mixture;

[0071] S2, keeping the mixture at 45°C for 2h, and then mixing with flavoring agent and filler to obtain secondary material;

[0072] S3, mixing the secondary material with the phycocyanin complex, drying and crushing the mixture to obtain blue laundry detergent.

[0073] Comparative Example 1

[0074] This comparative example 1 provides a blue laundry detergent, which is different from Example 3 in that an equal amount of phycocyanin is used in comparative example 1 to replace the phycocyanin complex.

[0075] Comparative Example 2

[0076] This comparative example 2 provides a blue laundry detergent, which is different from Example 3 in that an equal amount of blue is used in comparative example 2 to replace the phycocyanin complex.

[0077] Performance Testing

[0078] Based on GB / T 13174-2008 "Determination of Detergency of Synthetic Washing Powder", a decontamination test was performed: carbon black stained cloth, protein stained cloth and sebum stained cloth were prepared, and washing water with a hardness of 250ppm (calcium and magnesium ions 3:2) was prepared, and a RHLQ vertical decontamination machine of the China Daily Chemical Industry Research Institute was used, and the blue washing powder in Examples 1 to 7 and Comparative Examples 1 to 2 was used respectively to wash and dry the three kinds of stained cloth, and the whiteness W of the stained cloth before washing was measured using a WSD-3U fluorescent whiteness meter. 1 , Whiteness after cleaning W 2 And the whiteness difference ΔW = W 2 -W 1 ; The decontamination performance data of the three types of dirty cloths are shown in Table 2.

[0079] 10 experimenters (non-color blind, normal color recognition) were selected to perform sensory scoring on the initial state colors of the blue laundry detergents in Examples 1 to 7 and Comparative Examples 1 to 2, with bright blue being 100 points and dark gray being 0 points, and the average score was taken after removing the highest and lowest scores; a 100W xenon lamp was used to irradiate the blue laundry detergents in Examples 1 to 7 and Comparative Examples 1 to 2 for 120 hours, and then the sensory scoring was repeated, and the score retention rate was calculated as shown in Table 3 below.

[0080] Table 2 Blue washing powder decontamination performance test on dirty cloth

[0081]

[0082] As can be seen from Table 2, due to the excessively high filler content in Example 1, the detergent's ability to remove carbon black, protein and sebum is limited, but it still has good decontamination performance. At the same time, in Example 2, due to the addition of more surfactants and enzyme preparations, it can show a more excellent decontamination ability, especially for protein-stained cloth and sebum-stained cloth. As can be seen from Example 3, by balancing the content of each component in the blue detergent, the detergent's removal effect on non-biological stains and biological stains can be balanced, thereby achieving good universality.

[0083] It can also be seen from Table 2 that, since no protease was added in Example 4, the washing powder had a relatively low ability to remove protein-stained cloth, and no amylase was added in Example 5, which also affected the decontamination performance of the washing powder on the three types of stained cloth. In addition, it can be seen from Comparative Example 1 that, since the direct addition of phycocyanin easily leads to the inactivation of phycocyanin, the biological activity and antioxidant properties of phycocyanin are lost during the washing process, which affects the decontamination performance of the washing powder. Similarly, the use of indigo in Comparative Example 2 does not improve the decontamination performance of the washing powder.

[0084] Table 3 Sensory evaluation of blue laundry detergent

[0085] Initial sensory rating / Is there any color residue? Aging sensory score / points Retention rate / % Example 1 95.67 none 88.41 92.41 Example 2 94.26 none 86.42 91.68 Example 3 96.34 none 89.73 93.14 Example 4 95.72 none 88.56 92.52 Example 5 94.88 none 87.73 92.46 Example 6 96.13 none 88.33 91.89 Example 7 97.69 none 95.07 97.32 Comparative Example 1 92.42 Slight residue 35.57 38.49 Comparative Example 2 96.84 Obvious residue 59.59 61.53

[0086] As can be seen from Table 3, Examples 1 to 5 all maintained a pure blue color before aging, which shows that the phycocyanin complex maintained an ideal color. After light aging, the phycocyanin was degraded and faded under light and high temperature conditions, causing the color of the washing powder to change from pure blue to light blue. In Example 6, after adding antioxidants and light stabilizers to the phycocyanin complex, the stability of phycocyanin under light conditions can be improved, thereby maintaining the continuous pure blue color of the blue washing powder. In Comparative Examples 1 to 2, due to the degradation of phycocyanin and blue under light and high temperature, the color becomes gray.

[0087] Although the embodiments of the present invention are described in detail above, it is obvious to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention as described in the claims. Moreover, the present invention described herein may have other embodiments and may be implemented or realized in a variety of ways.

Claims

1. A blue washing powder, characterized in that: The invention is composed of the following components in percentage by mass: 10-20% anionic surfactant, 5-15% nonionic surfactant, 0.5-5% enzyme preparation, 3-8% bleaching agent, 5-15% detergent, 5-15% chelating agent, 0.1-2% fragrance, 20-65% filler, and 0.5-2% phycocyanin complex; The phycocyanin complex comprises a phycocyanin core and a water-soluble coating material coated on the outside of the phycocyanin core; the preparation method of the phycocyanin complex comprises: mixing a phycocyanin solution with a sodium carboxymethyl cellulose solution, stirring to obtain a mixed solution, and spray-drying the mixed solution to obtain the phycocyanin complex; when the phycocyanin solution and the sodium carboxymethyl cellulose solution are mixed, the phycocyanin solution is an aqueous solution with a mass fraction of 0.1-2% of phycocyanin, and the sodium carboxymethyl cellulose solution is an aqueous solution with a mass fraction of 3-5% of sodium carboxymethyl cellulose; after the phycocyanin solution and the sodium carboxymethyl cellulose solution are mixed, the phycocyanin and the carboxymethyl cellulose are mixed. The mass mixing ratio of sodium iodine is 1:(3-8); the process of stirring to obtain a mixed solution includes: shear stirring the mixed solution for 30-40 minutes at 2-6°C, and ultrasonically treating the mixed solution at an ultrasonic frequency of 20kHz for 5-10 minutes to obtain a mixed solution; spray drying the mixed solution to obtain a phycocyanin complex includes: adding a protective agent to the mixed solution for ultrasonic dispersion, and spray drying the mixed solution at an inlet air temperature of 120-150°C, an outlet air temperature of 60-80°C, a spray pressure of 4-6 bar, and an atomization speed of 18000-22000rpm to obtain a phycocyanin complex with a particle size of 10-50μm; The anionic surfactant is at least one of sodium dodecylbenzene sulfonate, sodium dodecyl sulfate, sodium α-olefin sulfonate, and sodium alkyl ether sulfate; The nonionic surfactant is at least one of fatty alcohol polyoxyethylene ether, polyethylene glycol ether ester, fatty acid ethoxylate, alkylphenol polyoxyethylene ether, and polyethylene glycol polypropylene glycol block copolymer; The enzyme preparation is a protease and an amylase in a mass mixing ratio of 1:(0.5-0.8); The bleaching agent is at least one of sodium percarbonate, sodium perborate and potassium persulfate; The builder is at least one of sodium silicate, sodium carbonate, trisodium phosphate, borax and sodium citrate; The protective agent is an antioxidant, a light stabilizer and a buffer; wherein the antioxidant is at least one of tocopherol, ascorbic acid and sodium ascorbate, the light stabilizer is benzophenone, and the buffer is sodium citrate.

2. The blue washing powder according to claim 1, characterized in that: The chelating agent is at least one of disodium ethylenediaminetetraacetate, citric acid, disodium adipate, polycarboxylate, and N,N-bis(hydroxyethyl)glycine; the flavoring agent is at least one of lemon essential oil, lavender essential oil, rose essential oil, and peppermint essential oil; and the filler is at least one of sodium sulfate, sodium chloride, calcium carbonate, kaolin, and diatomaceous earth.

3. A method for preparing the blue washing powder according to any one of claims 1 to 2, characterized in that: The method comprises the following steps: mixing anionic surfactant, nonionic surfactant, enzyme preparation, bleaching agent, builder and chelating agent to obtain a mixed material; keeping the mixed material at 40-50 DEG C for 2-3 hours and mixing it with a fragrance and a filler to obtain a secondary material; mixing the secondary material with a phycocyanin complex and drying it to obtain a blue washing powder.

4. The preparation method according to claim 3, characterized in that: Anionic surfactant, nonionic surfactant, enzyme preparation, bleaching agent, detergent and chelating agent are stirred and mixed, and then ground and sieved to obtain a mixture with an average particle size of 0.2-0.5 mm.

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