Mussel shell powder slow release fertilizer

Abstract

The invention discloses a mussel shell powder slow-release fertilizer which comprises a main material, the main material is formed by mixing mussel shell powder and tuna leftover double-hydrolyzed concentrated solution according to the mass ratio of 6: 1 to 3: 1, and the main material is prepared into a granular preparation after auxiliary materials are added or not added. According to the invention, mussel shells and tuna leftovers can be effectively utilized, and the slow-release fertilizer with a good effect is formed through a simple and feasible process.

Description

Technical Field

[0001] The invention relates to the technical field of biofertilizer production, in particular to a mussel shell powder slow-release fertilizer. Background Art

[0002] According to the research priorities of marine planning, we must coordinate the protection and development of marine resources, safeguard and expand marine rights and interests, facilitate land-sea connectivity, enhance maritime capabilities, and pursue a development path characterized by prosperity through the sea, harmony between people and the sea, and win-win cooperation. Shellfish farming and processing are crucial components of my country's marine resource development and utilization. Statistics from the 2022 Fisheries Yearbook indicate that my country's marine shellfish production has reached 15.26 million tons, making it a leading global producer of marine shellfish. Shellfish species are numerous, widely distributed, and possess a vast biomass. Due to the unique characteristics of their habitats and species, shellfish have the potential to produce specialized bioactive substances. This rich variety and vast biomass provide a valuable raw material base for the development of bioactive shellfish substances.

[0003] As an important economic shellfish, mussels have received widespread attention from experts and scholars in recent years. Zhoushan mussels are a delicacy among seafood and a geographical indication product because of their large size, tenderness, fat meat and pollution-free characteristics. Zhoushan Shengsi is also known as the "Hometown of Mussels". According to statistics, the mussel farming area in Shengsi is as much as 30,000 acres. In 2021, the annual output of mussels in Shengsi County exceeded 210,000 tons, with an annual output value of 770 million yuan, accounting for about 71% of the total aquaculture output in Zhoushan City. Shengsi mussels are well-known both at home and abroad and are sold to nearly 30 regions including Russia, South Korea, and Canada, creating a new engine for the vigorous development of the blue ocean economy. However, at present, mussels have key industry problems such as single processed products, low value utilization, and few high value-added products. How to improve the high-value utilization of mussels and enable them to develop from traditional breeding and processing to high-quality development has become an urgent problem that needs to be solved.

[0004] Food-derived bioactive peptides ( Bioactive peptide) have attracted widespread attention from researchers both domestically and internationally as potential treatments for physical illnesses and metabolic syndrome due to their high digestibility, nutritional benefits, and physiological effects. These bioactive peptides are absorbed through the intestine and possess various functional activities, including antimicrobial, anti-cholesterol, antioxidant, anti-allergic, anti-thrombotic, anti-cancer, anti-diabetic, and immunomodulatory properties. Shellfish are rich in naturally occurring marine bioactive peptides. Unlike terrestrial proteins, shellfish peptides possess a specific amino acid composition and sequence, which also endows them with diverse biological functions. In recent years, the extraction of bioactive peptides from marine organisms has become a research hotspot for the treatment of various chronic diseases. Extracting active ingredients from food-derived substances for chronic disease intervention offers the advantages of high efficacy and minimal side effects. Due to their widespread availability and low cost, food-derived bioactive peptides are promising candidates for the development of new health products and functional foods. However, due to their complex biological diversity, they have not been extensively explored. Tuna is one of the world's major fish resources, rich in protein, fat, vitamins, amino acids, and trace elements, and possesses high health benefits. However, processing of tuna results in many unused by-products, resulting in waste. Summary of the Invention

[0005] The invention aims to provide a mussel shell powder slow-release fertilizer, which can effectively utilize mussel shells and tuna waste materials and is processed into a slow-release fertilizer with good effect through a simple and easy process.

[0006] The technical solution adopted by the present invention to solve its technical problem is: A mussel shell powder slow-release fertilizer comprises a main ingredient, wherein the main ingredient is formed by mixing mussel shell powder and tuna waste double-decomposition concentrate in a mass ratio of 6:1 to 3:1, and the main ingredient is prepared into a granular preparation with or without the addition of auxiliary materials.

[0007] Preferably, the mussel shell powder is prepared as follows: the mussel shells are washed, calcined at 350-400° C. for 3-6 hours, and then crushed to a particle size of 5-20 μm to obtain the mussel shell powder.

[0008] Preferably, the preparation method of the tuna waste double-solution concentrated liquid is as follows: (1) Enzymatic hydrolysis Clean and crush the tuna scraps, then add complex enzyme for enzymolysis at a temperature of 55±1°C for 2-4 hours to obtain an enzymolysis solution; (2) Bacterial hydrolysis The composite Bacillus subtilis, glucose and syrup are mixed to form a bacterial liquid, and the bacterial liquid and the enzymatic hydrolysate are mixed and fermented at a material-liquid ratio of 1:40 to 1:50. After the fermentation is completed, the mixture is centrifuged, filtered and concentrated to obtain a tuna waste double hydrolysate concentrate.

[0009] Preferably, the auxiliary material includes amino acids.

[0010] Preferably, the auxiliary materials include mineral elements.

[0011] The beneficial effects of the present invention are: (1) Contains animal-derived amino acid small molecule nutrients and microorganisms to strengthen plants and improve resistance (2) Enhance plant vitality and amino acid small molecule nutrition to resist premature aging of plants (3) No chemical additives, no antibiotics, no pesticide residues, no pathogens (4) It retains more active ingredients in tuna and degrades the large molecular active substances in tuna into small molecular oligopeptides, amino acids, etc. that are more easily absorbed by plants, which can improve the disease resistance and stress resistance of crops. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a graph showing the effect of the slow-release fertilizer of the present invention on the thickness of corn stems; Figure 2 This is a graph showing the effect of the slow-release fertilizer of the present invention on the sugar content of fruit. DETAILED DESCRIPTION

[0013] The technical solution of the present invention is further described in detail below through specific embodiments.

[0014] In the present invention, unless otherwise specified, the raw materials and equipment used can be purchased from the market or are commonly used in the art. The methods in the following examples, unless otherwise specified, are all conventional methods in the art.

[0015] Example 1: A mussel shell powder slow-release fertilizer comprises a main ingredient, wherein the main ingredient is formed by mixing mussel shell powder and tuna waste double-solution concentrate in a mass ratio of 6:1.

[0016] The preparation method of the mussel shell powder is as follows: after washing the mussel shells, calcining them at 350° C. for 6 hours, and then crushing them to a particle size of 5-20 μm to obtain the mussel shell powder.

[0017] The preparation method of the tuna waste double-solution concentrated liquid is as follows: (1) Enzymatic hydrolysis The tuna scraps were cleaned and crushed, and then added with a complex enzyme for enzymatic hydrolysis at a temperature of 55±1°C for 2 h to obtain an enzymatic hydrolyzate. (2) Bacterial hydrolysis The composite Bacillus subtilis, glucose and syrup are mixed to form a bacterial liquid, and the bacterial liquid and the enzymatic hydrolysate are mixed and fermented at a material-liquid ratio of 1:40. After the fermentation is completed, the mixture is centrifuged, filtered and concentrated to obtain a tuna waste double hydrolysate concentrate.

[0018] Example 2: A mussel shell powder slow-release fertilizer comprises a main ingredient, wherein the main ingredient is formed by mixing mussel shell powder and tuna waste double-solution concentrate in a mass ratio of 3:1.

[0019] The preparation method of the mussel shell powder is as follows: after washing the mussel shells, calcining them at 400° C. for 3 hours, and then crushing them to a particle size of 5-20 μm to obtain the mussel shell powder.

[0020] The preparation method of the tuna waste double-solution concentrated liquid is as follows: (1) Enzymatic hydrolysis The tuna scraps were cleaned and crushed, and then added with a complex enzyme for enzymatic hydrolysis at a temperature of 55±1°C for 4 hours to obtain an enzymatic hydrolyzate. (2) Bacterial hydrolysis The composite Bacillus subtilis, glucose and syrup are mixed to form a bacterial liquid, and the bacterial liquid and the enzymatic hydrolysate are mixed and fermented at a material-liquid ratio of 1:50. After the fermentation is completed, the mixture is centrifuged, filtered and concentrated to obtain a tuna waste double hydrolysate concentrate.

[0021] Example 3: A mussel shell powder slow-release fertilizer comprises a main ingredient and an auxiliary ingredient of amino acids, wherein the main ingredient is formed by mixing mussel shell powder and tuna waste double-degradation concentrate in a mass ratio of 4:1.

[0022] The preparation method of the mussel shell powder is as follows: after washing the mussel shells, calcining them at 350° C. for 5 hours, and then crushing them to a particle size of 5-20 μm to obtain the mussel shell powder.

[0023] The preparation method of the tuna waste double-solution concentrated liquid is as follows: (1) Enzymatic hydrolysis The tuna scraps were cleaned and crushed, and then added with a complex enzyme for enzymatic hydrolysis at a temperature of 55±1°C for 3 h to obtain an enzymatic hydrolyzate. (2) Bacterial hydrolysis The composite Bacillus subtilis, glucose and syrup are mixed to form a bacterial liquid, and the bacterial liquid and the enzymatic hydrolysate are mixed and fermented at a material-liquid ratio of 1:45. After the fermentation is completed, the mixture is centrifuged, filtered and concentrated to obtain a tuna waste double hydrolysate concentrate.

[0024] Example 4: A mussel shell powder slow-release fertilizer comprises a main ingredient and auxiliary ingredients of mineral elements, wherein the main ingredient is formed by mixing mussel shell powder and tuna waste double-solution concentrate in a mass ratio of 4:1.

[0025] The preparation method of the mussel shell powder is as follows: after washing the mussel shells, calcining them at 350° C. for 5 hours, and then crushing them to a particle size of 5-20 μm to obtain the mussel shell powder.

[0026] The preparation method of the tuna waste double-solution concentrated liquid is as follows: (1) Enzymatic hydrolysis The tuna scraps were cleaned and crushed, and then added with a complex enzyme for enzymatic hydrolysis at a temperature of 55±1°C for 3 h to obtain an enzymatic hydrolyzate. (2) Bacterial hydrolysis The composite Bacillus subtilis, glucose and syrup are mixed to form a bacterial liquid, and the bacterial liquid and the enzymatic hydrolysate are mixed and fermented at a material-liquid ratio of 1:45. After the fermentation is completed, the mixture is centrifuged, filtered and concentrated to obtain a tuna waste double hydrolysate concentrate.

[0027] Example 5: A mussel shell powder slow-release fertilizer comprises a main ingredient and auxiliary ingredients of amino acids and mineral elements, wherein the main ingredient is formed by mixing mussel shell powder and tuna waste double-solution concentrate in a mass ratio of 4:1.

[0028] The preparation method of the mussel shell powder is as follows: after washing the mussel shells, calcining them at 350° C. for 5 hours, and then crushing them to a particle size of 5-20 μm to obtain the mussel shell powder.

[0029] The preparation method of the tuna waste double-solution concentrated liquid is as follows: (1) Enzymatic hydrolysis The tuna scraps were cleaned and crushed, and then added with a complex enzyme for enzymatic hydrolysis at a temperature of 55±1°C for 3 h to obtain an enzymatic hydrolyzate. (2) Bacterial hydrolysis The composite Bacillus subtilis, glucose and syrup are mixed to form a bacterial liquid, and the bacterial liquid and the enzymatic hydrolysate are mixed and fermented at a material-liquid ratio of 1:45. After the fermentation is completed, the mixture is centrifuged, filtered and concentrated to obtain a tuna waste double hydrolysate concentrate.

[0030] The slow-release fertilizer of the present invention has a crude protein content of about 40% and an organic matter content of more than 20%. Component test: Nutrient content: Total peptide: ≥40%, free amino acid ≥20%, small peptide ≥12%, polypeptide ≥8% Organic matter: ≥ 6%, total phosphorus ≥ 0.72%, potassium ≥ 0.5%, calcium and magnesium ≥ 0.1%.

[0031] Physical and chemical indicators: Salt: 7.1% VBN: 420 Moisture: 44% Fat: 2.35%, Total ash: ≤10%.

[0032] During the afternoon heat, all corn leaves curled due to water shortage and drought. After using the slow-release fertilizer of the present invention, the plants were significantly taller, the leaves did not curl seriously (with outstanding drought resistance), the corn stems became thicker, and the lodging resistance was enhanced (such as Figure 1 ).

[0033] By applying the slow-release fertilizer of the present invention, the sugar content of fruits can be increased ( Figure 2): The sugar content of strawberries increased by 1.7%; the sugar content of apples increased by 2%; the sugar content of cherries increased by 3%, and the sugar content can be as high as 21%.

[0034] The embodiment described above is only a preferred solution of the present invention and does not limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solution described in the claims.

Claims

1. A mussel shell powder slow-release fertilizer, characterized in that: The method comprises a main ingredient, which is formed by mixing mussel shell powder and tuna waste double-decomposition concentrate in a mass ratio of 6:1 to 3:

1. The main ingredient is prepared into a granular preparation after adding or not adding auxiliary materials.

2. A mussel shell powder slow-release fertilizer according to claim 1, characterized in that, The preparation method of the mussel shell powder is as follows: after washing the mussel shells, calcining them at 350-400° C. for 3-6 hours, and then crushing them to a particle size of 5-20 μm to obtain the mussel shell powder.

3. A mussel shell powder slow-release fertilizer according to claim 1, characterized in that, The preparation method of the tuna waste double-solution concentrated liquid is as follows: (1) Enzymatic hydrolysis Clean and crush the tuna scraps, then add complex enzyme for enzymolysis at a temperature of 55±1°C for 2-4 hours to obtain an enzymolysis solution; (2) Bacterial hydrolysis The composite Bacillus subtilis, glucose and syrup are mixed to form a bacterial liquid, and the bacterial liquid and the enzymatic hydrolysate are mixed and fermented at a material-liquid ratio of 1:40 to 1:

50. After the fermentation is completed, the mixture is centrifuged, filtered and concentrated to obtain a tuna waste double hydrolysate concentrate.

4. A mussel shell powder slow-release fertilizer according to claim 1, characterized in that, The auxiliary materials include amino acids.

5. The mussel shell powder slow-release fertilizer according to claim 1, characterized in that: The auxiliary materials include mineral elements.

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