Environmentally friendly black soldier fly breeding feed and preparation method thereof

Abstract

The present invention discloses an environmentally friendly black soldier fly aquaculture feed and a preparation method thereof, primarily relating to the technical field of invertebrate breeding. Compared with existing technologies, the environmentally friendly black soldier fly aquaculture feed of the present invention can simultaneously increase the high protein content of the insects and reduce aquaculture odor. By using rotten fruit and vegetable raw materials, brewer's yeast, corn flour, wheat bran, peanut bran, and a composite bacterial strain, the feed promotes the conversion and absorption of nutrients in the feed and increases the production of beneficial metabolites. The added deodorant, composed of citrus flavonoids, Moringa leaf protein, and sodium alginate, effectively absorbs and inhibits the emission of malodorous gases such as ammonia, thereby improving the aquaculture environment.

Description

Technical Field

[0001] The invention relates to the technical field of invertebrate breeding, and in particular to an environmentally friendly black soldier fly breeding feed and a preparation method thereof. Background Art

[0002] The black soldier fly is a saprophytic insect of the family Schizontidae that feeds on household garbage and livestock feces, such as kitchen waste, animal feces, rotten fruits and vegetables, carrion, and animal carcasses. Black soldier fly larvae are rich in protein and fat, making them an ideal choice for animal feed. Breeding black soldier flies ultimately allows for the recycling of resources. Black soldier fly eggs take 2-4 days to hatch, and the hatched larvae should be placed in feed as soon as possible for breeding. It generally takes about 35 days from egg to adult. Larvae can be fed with a feed composition made by mixing raw grain processing materials such as soybean meal, bran, rice bran, peanut bran, corn flour, or food industry waste such as distiller's grains, tofu dregs, and cassava residues in a certain proportion and then adding water to ferment them. The fermented feed contains more available nutrients and can be better absorbed. Livestock manure is also one of the preferred feeds for black soldier fly farming. It is widely available and inexpensive, especially chicken manure from young chickens and fermented mixed feed, which is more effective. Restaurant waste is extremely nutrient-rich and contains a significant amount of residual energy, making it suitable for black soldier fly farming. However, it is important to note that restaurant waste is complex in composition and requires simple crushing and filtering before feeding. Agricultural by-products such as rice bran and wheat bran are also high-quality feed sources for black soldier flies. In summary, scientifically sound farming methods and formulations can be used to efficiently cultivate black soldier flies and fully utilize resources.

[0003] In the existing technology, the impact of odor on the environment is usually reduced by isolating and improving the breeding environment, and the ventilation system is upgraded to ensure good air circulation in the breeding area to reduce the accumulation of harmful gases, thereby reducing odor. Biofiltration systems can also be used to utilize microorganisms to degrade malodorous substances; specific probiotic additives can also be selected to promote the decomposition of organic matter in the feed while reducing the generation of malodorous gases; physical isolation measures can be adopted, such as enclosing breeding facilities or using adsorbent materials to reduce the spread of odor to the surrounding environment. The combined use of these methods can effectively improve the breeding environment of black soldier flies and reduce the impact on the surrounding environment. In order to increase the protein content of black soldier flies, the existing technology focuses on optimizing feed formulas, adding high-protein raw materials such as soybean meal and insect protein powder, and using fermentation technology to improve nutritional value and digestibility, so as to enhance the immune function of black soldier flies and improve protein utilization efficiency, thereby increasing its value as a feed raw material.

[0004] CN117179126A discloses a method for preparing insect feed using food waste. The invention removes impurities, dehydrates, deoils, and sterilizes the collected food waste, thereby reducing the moisture, oil, and crude protein content in the food waste and killing harmful microorganisms. This prevents the food waste from rotting and deteriorating, thereby improving the breeding environment. Furthermore, by adding composite probiotics to the food waste for fermentation, the nutritional structure of the food waste is adjusted, the flavor is enhanced, and the digestion and absorption rate of the insects is improved. Furthermore, the antibacterial components secreted by the composite probiotics reduce or replace the use of antibiotics in the feed, comprehensively preventing the food waste from rotting and deteriorating, and improving the nutritional structure and value of the food waste.

[0005] CN111802510A discloses a kind of animal excrement fermentation organic feed and its preparation method, and this organic feed comprises the following components and the weight parts of each component are: animal excrement 50 parts, dry matter 50 parts, enzyme 0.1 parts, and described enzyme comprises potato scab pathogen 25 parts, casei lactobacillus 10 parts, wood acetic acid bacteria 10 parts, saccharomyces cerevisiae 15 parts, Bacillus subtilis 10 parts and Bifidobacterium 15 parts. This organic feed contains a variety of high-quality lactic acid bacteria, can effectively degrade anti-nutritional factors in feed, improve feed nutritional value and digestibility, improve feed flavor and palatability, effectively prevent feed mildew and the production of aflatoxin, ensure the safety of fermented feed, avoid the loss of nutrition and weight caused by fermentation heat and gas production, and utilize animal excrement fermentation organic feed to breed black soldier flies, can simultaneously achieve the purpose of animal excrement resource utilization, reduction and harmlessness. The above invention patents do not simultaneously solve the problem of increasing the protein content of black soldier flies and reducing the odor problem in breeding. Summary of the Invention

[0006] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a black soldier fly breeding feed using rotten fruits and vegetables as raw materials, thereby increasing the protein content of the cultured black soldier fly larvae, effectively reducing the ammonia odor gas generated during the breeding process, and improving the breeding environment.

[0007] To achieve the above-mentioned purpose, the present invention provides an environmentally friendly black soldier fly breeding feed and a preparation method thereof.

[0008] The environmentally friendly black soldier fly breeding feed comprises the following components:

[0009] Rotten fruit and vegetable raw materials, brewer's yeast, corn flour, wheat bran, peanut bran, composite bacteria, tert-butylhydroquinone, deodorant, water.

[0010] Preferably, the following components are included in parts by weight:

[0011] 200-300 parts of rotten fruit and vegetable raw materials, 15-25 parts of brewer's yeast, 40-80 parts of corn flour, 20-50 parts of wheat bran, 20-50 parts of peanut bran, 10-20 parts of composite bacteria, 20-30 parts of tert-butylhydroquinone, 40-60 parts of deodorant, and 300-600 parts of water.

[0012] The preparation method of the environmentally friendly black soldier fly breeding feed is as follows, in parts by weight:

[0013] 200-300 parts of rotten fruit and vegetable raw materials are chopped and mashed into a paste, 200-300 parts of water are added to dilute, 15-25 parts of brewer's yeast are continuously added, and stirring is carried out for 10-30 minutes to obtain a rotten fruit and vegetable material slurry; 40-80 parts of corn flour, 20-50 parts of wheat bran, and 20-50 parts of peanut bran are mixed, crushed and sieved, and added to the rotten fruit and vegetable material slurry, 100-300 parts of water are added, 10-20 parts of composite bacteria are added, and the mixture is allowed to ferment at 28-38°C for 4-5 days, cooled to room temperature, 20-30 parts of tert-butylhydroquinone are added, and stirring is carried out for 0.5-1 hour, and 40-60 parts of deodorant are added to obtain the environmentally friendly black soldier fly breeding feed.

[0014] The preparation method of the deodorant is as follows:

[0015] Add citrus flavonoids and sodium alginate into water and stir for 0.5-1 hour; add Moringa leaf protein into water, add sodium chloride, and stir at room temperature for 10-30 minutes; mix the two to obtain the deodorant.

[0016] Preferably, the preparation method of the deodorant is as follows, in parts by weight:

[0017] Add 0.2-0.6 parts of citrus flavonoids and 2-6 parts of sodium alginate to 40-50 parts of water and stir for 0.5-1 hour; add 1-2 parts of Moringa leaf protein to 15-20 parts of water, add 0.2-0.4 parts of sodium chloride, stir at room temperature for 10-30 minutes, and mix the above two to obtain the deodorant.

[0018] The rotten vegetable and fruit raw materials are one or more of rotten cabbage, rotten radish, rotten spinach, rotten celery, rotten potato, rotten eggplant, rotten peanuts, rotten tomato, rotten corn, rotten cucumber, rotten apple, rotten banana, rotten pineapple, rotten mango, rotten grape, rotten avocado, rotten grapefruit, rotten orange, rotten peach, and rotten pear.

[0019] The particle size of the crushed and sieved particles is 150-200 meshes.

[0020] The composite bacterial species is one or more of thermophilic Streptococcus, Bacillus subtilis, Lactobacillus rhamnosus, Lactobacillus plantarum, and Bifidobacterium animalis.

[0021] The environmentally friendly black soldier fly breeding feed of the present invention comprises rotten fruit and vegetable raw materials as the basic components of the feed, providing rich organic matter and nutrients, including proteins, vitamins, minerals, etc. necessary for the growth and high protein content of black soldier flies. The microorganisms naturally produced during the decay process and the subsequently added brewer's yeast and composite bacterial strains jointly promote the fermentation process, further decompose the complex organic matter in the raw materials, increase the absorbable nutrients, and simultaneously produce beneficial metabolites to promote the digestion and absorption of black soldier flies. Among them, brewer's yeast not only accelerates the fermentation process of rotten fruit and vegetable raw materials, but also improves the nutritional value of the feed because it contains rich protein and B vitamins. The carbohydrates, proteins, fats, and fibers provided by corn flour, wheat bran, and peanut bran serve as important energy and nutritional sources for the growth of black soldier fly larvae. The present invention adds one or more of thermophilic Streptococcus, Bacillus subtilis, Lactobacillus rhamnosus, Lactobacillus plantarum, and Bifidobacterium animalis to the composite bacterial strains. Through the synergistic effect of the composite bacterial strains, the conversion and absorption of nutrients in the feed are jointly promoted, the generation of beneficial metabolites is increased, and the nutritional value and digestibility of the feed are improved. Tert-butylhydroquinone acts as a preservative and antioxidant, helping to protect the fat and protein in the feed from oxidation, maintaining the feed's nutritional value and extending its storage life. This ensures that black soldier flies receive high-quality protein and helps reduce oxidative rancidity during storage and use, maintaining its freshness and nutritional value. The addition of a deodorant can reduce the ammonia odor produced during the feeding process. The combination of citrus flavonoids, moringa leaf protein, and sodium alginate effectively reduces ammonia odor produced during the feeding process by adsorbing, masking, and inhibiting the generation of odorous gases, improving the breeding environment and potentially having a positive impact on the growth environment of black soldier flies.

[0022] Beneficial effects of the present invention:

[0023] Compared with the existing technology, the environmentally friendly black soldier fly breeding feed of the present invention can simultaneously increase the high protein content of the insect body and reduce the breeding odor. By using rotten vegetable and fruit raw materials, brewer's yeast, corn flour, wheat bran, peanut bran and composite bacterial strains, the conversion and absorption of nutrients in the feed are jointly promoted, and the production of beneficial metabolites is increased. The added deodorant composed of citrus flavonoids, moringa leaf protein and sodium alginate effectively adsorbs and inhibits the emission of malodorous gases such as ammonia, thereby improving the breeding environment. DETAILED DESCRIPTION

[0024] The parameters of the specific chemical substances used in the examples are derived from the following sources:

[0025] Saccharomyces cerevisiae (CGMCC No. 2.3854) was purchased from China General Microbiological Culture Collection Center.

[0026] Streptococcus thermophilus (CGMCC No. 1.1855) was purchased from China General Microbiological Culture Collection Center.

[0027] Lactobacillus rhamnosus (CGMCC No. 1.12734) was purchased from China General Microbiological Culture Collection Center.

[0028] Bacillus subtilis (CGMCC strain number: 1.821) was purchased from China General Microbiological Culture Collection Center.

[0029] Citrus flavonoids: The extraction source is citrus pulp extract of the genus Citrus, the manufacturer is Shaanxi Bolin Biotechnology Co., Ltd., the product number is BL-20240110005.

[0030] Moringa leaf protein: The manufacturer is Shaanxi Mufan Biotechnology Co., Ltd., and the product number is MF-00866.

[0031] Example 1

[0032] A method for preparing an environmentally friendly black soldier fly breeding feed is as follows:

[0033] The rotten fruit and vegetable raw materials are chopped and mashed into a paste, including 40g of rotten spinach, 50g of rotten eggplant, 20g of rotten peanuts, 40g of rotten apples, 50g of rotten bananas, and 20g of rotten pears, and 200g of water is added to dilute them. 20g of brewer's yeast is further added and stirred for 20 minutes to obtain a rotten fruit and vegetable material slurry; 60g of corn flour, 40g of wheat bran, and 40g of peanut bran are mixed, crushed and passed through a 160-mesh sieve, and added to the rotten fruit and vegetable material slurry, 200g of water is added, 4g of thermophilic Streptococcus, 5g of Lactobacillus rhamnosus, and 6g of Bacillus subtilis are added, and the mixture is allowed to ferment at 35°C for 4 days, cooled to room temperature, 25g of tert-butylhydroquinone is added and stirred for 0.5 hour, and 55g of deodorant is added to obtain the environmentally friendly black soldier fly breeding feed.

[0034] The preparation method of the deodorant is as follows:

[0035] 0.4 g of citrus flavonoids and 4 g of sodium alginate were added to 40 g of water and stirred for 0.5 hours. 1 g of Moringa leaf protein was added to 16 g of water, and 0.3 g of sodium chloride was added. The mixture was stirred at room temperature for 20 minutes. The deodorant was obtained by mixing the above two.

[0036] Example 2

[0037] A method for preparing an environmentally friendly black soldier fly breeding feed is as follows:

[0038] The rotten fruit and vegetable raw materials are chopped and mashed into a paste, including 40g of rotten spinach, 50g of rotten eggplant, 20g of rotten peanuts, 40g of rotten apples, 50g of rotten bananas, and 20g of rotten pears, and 200g of water is added to dilute them. 20g of brewer's yeast is further added and stirred for 20 minutes to obtain a rotten fruit and vegetable material slurry; 60g of corn flour, 40g of wheat bran, and 40g of peanut bran are mixed, crushed and passed through a 160-mesh sieve, and added to the rotten fruit and vegetable material slurry, 200g of water is added, 4g of thermophilic Streptococcus, 5g of Lactobacillus rhamnosus, and 6g of Bacillus subtilis are added, and the mixture is allowed to ferment at 35°C for 4 days, cooled to room temperature, 25g of tert-butylhydroquinone is added and stirred for 0.5 hour, and 55g of deodorant is added to obtain the environmentally friendly black soldier fly breeding feed.

[0039] The preparation method of the deodorant is as follows:

[0040] The deodorant was prepared by adding 0.4 g of citrus flavonoids and 4 g of sodium alginate into 40 g of water and stirring for 0.5 hours.

[0041] Example 3

[0042] A method for preparing an environmentally friendly black soldier fly breeding feed is as follows:

[0043] The rotten fruit and vegetable raw materials are chopped and mashed into a paste, including 40g of rotten spinach, 50g of rotten eggplant, 20g of rotten peanuts, 40g of rotten apples, 50g of rotten bananas, and 20g of rotten pears, and 200g of water is added to dilute them. 20g of brewer's yeast is further added and stirred for 20 minutes to obtain a rotten fruit and vegetable material slurry; 60g of corn flour, 40g of wheat bran, and 40g of peanut bran are mixed, crushed and passed through a 160-mesh sieve, and added to the rotten fruit and vegetable material slurry, 200g of water is added, 4g of thermophilic Streptococcus, 5g of Lactobacillus rhamnosus, and 6g of Bacillus subtilis are added, and the mixture is allowed to ferment at 35°C for 4 days, cooled to room temperature, 25g of tert-butylhydroquinone is added and stirred for 0.5 hour, and 55g of deodorant is added to obtain the environmentally friendly black soldier fly breeding feed.

[0044] The preparation method of the deodorant is as follows:

[0045] 4 g of sodium alginate was added to 40 g of water and stirred for 0.5 hours. 1 g of Moringa leaf protein was added to 16 g of water, and 0.3 g of sodium chloride was added. The mixture was stirred at room temperature for 20 minutes. The deodorant was obtained by mixing the above two.

[0046] Example 4

[0047] A method for preparing an environmentally friendly black soldier fly breeding feed is as follows:

[0048] The rotten fruit and vegetable raw materials are chopped and mashed into a paste, including 40g of rotten spinach, 50g of rotten eggplant, 20g of rotten peanuts, 40g of rotten apples, 50g of rotten bananas, and 20g of rotten pears, and 200g of water is added to dilute them. 20g of brewer's yeast is continued to be added, and the mixture is stirred for 20 minutes to obtain a rotten fruit and vegetable material slurry; 60g of corn flour, 40g of wheat bran, and 40g of peanut bran are mixed, crushed and passed through a 160-mesh sieve, and added to the rotten fruit and vegetable material slurry, 200g of water is added, 4g of thermophilic Streptococcus, 5g of Rhamnosus lactobacillus, and 6g of Bacillus subtilis are added, and the mixture is fermented at 35°C for 4 days, cooled to room temperature, 25g of tert-butylhydroquinone is added and stirred for 0.5 hour, 0.4g of citrus flavonoids and 1g of Moringa leaf protein are added to obtain the environmentally friendly black soldier fly breeding feed.

[0049] Example 5

[0050] A method for preparing an environmentally friendly black soldier fly breeding feed is as follows:

[0051] The rotten fruit and vegetable raw materials are chopped and mashed into a paste, including 40g of rotten spinach, 50g of rotten eggplant, 20g of rotten peanuts, 40g of rotten apples, 50g of rotten bananas, and 20g of rotten pears, and 200g of water is added to dilute them. 20g of brewer's yeast is further added, and the mixture is stirred for 20 minutes to obtain a rotten fruit and vegetable material slurry; 60g of corn flour, 40g of wheat bran, and 40g of peanut bran are mixed, crushed and passed through a 160-mesh sieve, and added to the rotten fruit and vegetable material slurry, 200g of water is added, 4g of thermophilic Streptococcus, 5g of Lactobacillus rhamnosus, and 6g of Bacillus subtilis are added, and the mixture is fermented at 35°C for 4 days, cooled to room temperature, 25g of tert-butylhydroquinone is added, and stirred for 0.5 hour to obtain the environmentally friendly black soldier fly breeding feed.

[0052] Test Example 1

[0053] Test Example 1 The environmentally friendly black soldier fly breeding feed obtained by the preparation method of Example 1 and Example 5 was used to feed black soldier flies. The black soldier fly breeding feed of the chicken manure group and the wheat bran group was added as a comparative test, and 3 experiments were repeated for each group. 100g of environmentally friendly black soldier fly breeding feed was respectively taken and placed in a black soldier fly breeding box with a size of 30×20×5cm. 5g of black soldier fly larvae cultured for five days at 28°C and 65% humidity were added and continued to be cultured in the box for ten days. 100g of environmentally friendly black soldier fly breeding feed was added every day. On the tenth day, the crude protein content of the black soldier fly larvae cultured with the feed of different embodiments was tested. The higher the content, the higher the protein content of the black soldier fly larvae as animal feed. The test was based on the full method of the national standard GB / T 6432-2018 "Determination of crude protein in feed - Kjeldahl nitrogen method", as summarized in Table 1.

[0054]

[0055] The experimental results show that the environmentally friendly black soldier fly breeding feed of the embodiment of the present invention uses rotten fruits and vegetables as the main source of raw materials. Through the selection and matching of raw materials, as well as the fermentation of composite bacteria, it is more helpful to accelerate the growth and protein synthesis of black soldier fly larvae compared with the chicken manure group and wheat bran group. The synergistic effect of brewer's yeast and composite bacteria added in the embodiment of the present invention jointly promotes the conversion and absorption of nutrients in the fermentation process, increases the protein content in the feed and improves the amino acid composition. The joint action of microorganisms can produce a variety of enzymes during the fermentation process to help decompose the macromolecular nutrients in the raw materials, making them easier for the black soldier fly larvae to digest and absorb. The metabolites such as organic acids, amino acids and vitamins produced during the fermentation process can also provide additional nutrition for the black soldier fly larvae, promote their growth and increase protein content, and ultimately increase the protein content of the insect body itself. The corn flour added mainly provides carbohydrates, which is an important source of energy for black soldier fly larvae. Wheat bran and peanut bran are rich in cellulose and protein. The cellulose in wheat bran helps to increase the air permeability of the feed and promotes digestion of the larvae, while the peanut bran provides high-quality plant protein. These proteins and amino acids are key nutrients for larval growth and development. The added tert-butylhydroquinone, as a preservative and antioxidant, helps to protect the fat and protein in the feed from being destroyed, keeping the nutrients in the feed from being lost, thereby ensuring that the black soldier fly larvae can ingest high-quality protein. During the black soldier fly breeding process, rotten fruit and vegetable raw materials may release these odorous compounds during fermentation and decomposition. The selection of deodorant not only needs to effectively reduce the odor in the breeding environment, but also cannot have a negative impact on the growth and protein content of the black soldier flies. It is usually by neutralizing or decomposing the organic components in the rotten fruit to produce malodorous compounds such as ammonia during the decomposition process. Example 5 adds a deodorant compared to Example 1, the purpose of which is to reduce environmental odor and not reduce the protein content of the black soldier flies in the breeding. In summary, the environmentally friendly black soldier fly breeding feed of the embodiment of the present invention helps to increase the protein content of black soldier fly larvae by optimizing raw material selection, fermentation process and the use of additives, thereby improving its nutritional value and application potential as a feed raw material.

[0056] Test Example 2

[0057] 60g of each of the environmentally friendly black soldier fly aquaculture feeds prepared by the methods of Examples 1-5 were diluted in water at a ratio of 1:100 and then dispensed into open beakers. The beakers were then placed in a transparent, sealed chamber. The inhibition rate of NH3 release in the chamber air was calculated at 30, 60, and 90 minutes. The inhibition rate for NH3 release at each time point was calculated as: {(NH3 release at the 0th minute - NH3 release at that time point) / NH3 release at the 0th minute} × 100%. A higher inhibition rate indicates better odor suppression, indicating reduced odor release. Three parallel experiments were conducted for each example, and the test data were averaged, summarized in Table 2.

[0058]

[0059] The main difference between Examples 1-5 of the present invention in the process of preparing environmentally friendly black soldier fly breeding feed lies in the composition of the deodorant. In Example 1, citrus flavonoids, sodium alginate and moringa leaf protein are used as components of the deodorant. Citrus flavonoids, as a natural flavonoid compound, not only have antioxidant properties that can neutralize free radicals and reduce the malodorous gases that may be produced during the oxidation process, but also have antibacterial properties that help inhibit the activity of microorganisms, which are often the source of malodorous gases. By inhibiting the growth and metabolism of microorganisms, the generation of ammonia and other volatile organic compounds is reduced. The addition of moringa leaf protein utilizes its unique amino acid composition and molecular structure to adsorb and mask malodorous gas molecules. The amino acid side chains in the protein molecules may form hydrogen bonds or other types of chemical bonds with malodorous gas molecules, thereby effectively adsorbing these gas molecules and reducing their concentration in the air. Sodium alginate has good viscosity, and its viscosity is used to wrap and protect citrus flavonoids and moringa leaf protein. When it comes into contact with malodorous gas molecules, it can be adsorbed on the surface or fixed inside, providing a physical barrier for malodorous gas molecules, further reducing their release. The addition of sodium chloride helps to adjust the ionic strength of the solution. An appropriate amount of salt can enhance the adsorption capacity of protein and play a positive role in improving the viscosity of sodium alginate, thereby improving the deodorizing effect. However, Examples 2-4 control variables by omitting moringa leaf protein, citrus flavonoids and sodium alginate, indicating that the synergistic effect of the deodorant prepared by Example 1 using moringa leaf protein, citrus flavonoids and sodium alginate will affect the deodorizing effect. The deodorizing effects of Examples 2-4 are all lower than those of Example 1. No deodorant is added during the preparation of Example 5, and it does not have a deodorizing and odor-suppressing effect.

[0060] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. An environmentally friendly black soldier fly breeding feed, characterized in that: It comprises the following components in parts by weight: 200-300 parts of rotten fruit and vegetable raw materials, 15-25 parts of brewer's yeast, 40-80 parts of corn flour, 20-50 parts of wheat bran, 20-50 parts of peanut bran, 10-20 parts of composite bacteria, 20-30 parts of tert-butylhydroquinone, 40-60 parts of deodorant, and 300-600 parts of water; The composite bacterial species are Streptococcus thermophilus, Bacillus subtilis and Lactobacillus rhamnosus; The preparation method of the deodorant is as follows: Add 0.2-0.6 parts of citrus flavonoids and 2-6 parts of sodium alginate to 40-50 parts of water and stir for 0.5-1 hour, add 1-2 parts of Moringa leaf protein to 15-20 parts of water, add 0.2-0.4 parts of sodium chloride, stir at room temperature for 10-30 minutes, and mix the above two to obtain the deodorant; The preparation method of the environmentally friendly black soldier fly breeding feed is as follows: 200-300 parts of rotten fruit and vegetable raw materials are chopped and mashed into a paste, 200-300 parts of water are added to dilute, 15-25 parts of brewer's yeast are continuously added, and stirring is carried out for 10-30 minutes to obtain a rotten fruit and vegetable material slurry; 40-80 parts of corn flour, 20-50 parts of wheat bran, and 20-50 parts of peanut bran are mixed, crushed and sieved, and added to the rotten fruit and vegetable material slurry, 100-300 parts of water are added, 10-20 parts of composite bacteria are added, and the mixture is allowed to ferment at 28-38°C for 4-5 days, cooled to room temperature, 20-30 parts of tert-butylhydroquinone are added, and stirring is carried out for 0.5-1 hour, and 40-60 parts of deodorant are added to obtain the environmentally friendly black soldier fly breeding feed.

2. A method for preparing the environmentally friendly black soldier fly breeding feed as claimed in claim 1, characterized in that: The preparation method is as follows: 200-300 parts of rotten fruit and vegetable raw materials are chopped and mashed into a paste, 200-300 parts of water are added to dilute, 15-25 parts of brewer's yeast are continuously added, and stirring is carried out for 10-30 minutes to obtain a rotten fruit and vegetable material slurry; 40-80 parts of corn flour, 20-50 parts of wheat bran, and 20-50 parts of peanut bran are mixed, crushed and sieved, and added to the rotten fruit and vegetable material slurry, 100-300 parts of water are added, 10-20 parts of composite bacteria are added, and the mixture is allowed to ferment at 28-38°C for 4-5 days, cooled to room temperature, 20-30 parts of tert-butylhydroquinone are added, and stirring is carried out for 0.5-1 hour, and 40-60 parts of deodorant are added to obtain the environmentally friendly black soldier fly breeding feed.

3. The method for preparing the environmentally friendly black soldier fly breeding feed according to claim 2, wherein: The rotten vegetable and fruit raw materials are one or more of rotten cabbage, rotten radish, rotten spinach, rotten celery, rotten potato, rotten eggplant, rotten peanuts, rotten tomato, rotten corn, rotten cucumber, rotten apple, rotten banana, rotten pineapple, rotten mango, rotten grape, rotten avocado, rotten grapefruit, rotten orange, rotten peach, and rotten pear.

4. The method for preparing the environmentally friendly black soldier fly breeding feed according to claim 2, wherein: The particle size of the crushed and sieved particles is 150-200 meshes.

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