Method for recycling tea tree waste, and products and applications thereof

Abstract

The application provides a tea tree waste recycling method, which processes tea tree waste into a film for tea tree planting, or processes tea tree waste into a bio-fertilizer for tea tree planting, and the tea tree waste includes tea tree branches, tea leaves, tea dregs and tea stems. The method provided by the application performs special primary processing on the tea tree waste, and does not introduce too many chemical components and pesticides. Meanwhile, the method processes from soil to film combination, and has a 1+1>2 effect.

Description

Technical Field

[0001] This invention relates to the field of tea tree cultivation technology, and in particular to a method for recycling tea tree waste, as well as its products and applications. Background Technology

[0002] During tea tree cultivation and tea processing, tea branches, stems, and dregs are generated, most of which are discarded as waste. For example, tea stems are not allowed in the preparation of Tieguanyin tea, so they need to be removed. Similarly, tea stems account for about 30% of the tea's weight, so discarding them directly would be a significant loss.

[0003] In addition, used tea leaves, known as tea dregs, have many uses in the market, such as making pillows, sachets, and fertilizers. Because tea dregs contain a large amount of inorganic salts and carbohydrates, they can be buried deep in the soil to increase fertility and promote growth.

[0004] Similarly, directly using tea plant waste is not the best approach, as it introduces a large number of grubs. Therefore, it needs to be processed before reuse.

[0005] CN110959443A discloses a method for cultivating an ecological tea garden. This method utilizes tea plant waste, brown sugar, and water to prepare an eco-enzyme. The eco-enzyme is periodically sprayed onto the tea garden, and the residue from its production is buried in the soil. This method not only improves tea plant quality and increases yield, but also improves soil quality. Furthermore, it avoids environmental and agricultural pollution caused by pesticide use. It effectively conserves environmental resources and promotes the recycling of tea plantation products.

[0006] CN108623363A provides an organic fertilizer containing tea residue and its preparation method. The organic fertilizer containing tea residue comprises the following raw materials in parts by weight: 65-70 parts tea residue, 15-20 parts soybean meal, 5-10 parts corn flour, 10-15 parts rice bran, 3-8 parts urea, 2-7 parts brown sugar, 0.1-0.6 parts Bacillus subtilis powder, and 0.01-0.06 parts cellulase; the moisture content of the tea residue is 60-65% by mass. The preparation method involves mixing the tea residue, soybean meal, corn flour, and rice bran (a tea residue composition) with Bacillus subtilis and cellulase, then fermenting and enzymatically hydrolyzing to obtain the organic fertilizer. The beneficial effects of this invention are: the fermentation cycle only requires 3-5 days, producing a powdered organic fertilizer with a total nutrient content of no more than 8-10% and an organic matter content of no more than 50-60%.

[0007] Therefore, the present invention provides a method for recycling tea tree waste, as well as products thereon and applications. Summary of the Invention

[0008] The purpose of this invention is to provide a method for recycling tea tree waste, which involves processing the tea tree waste into a film for tea tree planting; or, preparing the tea tree waste into a bio-fertilizer for tea tree planting.

[0009] The tea tree waste includes tea tree branches, tea leaves, tea dregs, and tea stems.

[0010] In one embodiment of the present invention, the film is prepared by processing tea tree branches and then reacting them with a biodegradable polymer.

[0011] In one embodiment of the present invention, the biodegradable polymer is chitosan.

[0012] In one embodiment of the present invention, the bio-fertilizer is prepared by fermenting tea leaves, tea dregs, and tea stems.

[0013] In one embodiment of the present invention, the fermentation strains are Bacillus and Candida albicans.

[0014] This invention provides a tea tree planting film, which is prepared by the method described above.

[0015] This invention provides a bio-fertilizer, which is prepared by the method described above.

[0016] The present invention provides a method for recycling tea tree waste, which is applied to tea tree cultivation.

[0017] The present invention provides a method for reusing tea tree waste, which is applied to improve the efficiency of tea garden soil.

[0018] By adopting the above technical solution, the present invention has the following beneficial effects: the method provided by the present invention performs specialized preliminary processing of tea tree waste without introducing excessive chemical components, pesticides, etc.; at the same time, the combined treatment from soil to film achieves a 1+1>2 effect. Detailed Implementation

[0019] The technical solution of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] This invention provides a method for recycling tea tree waste, which involves processing the tea tree waste into a film for tea tree cultivation; or, preparing the tea tree waste into a bio-fertilizer for tea tree cultivation.

[0021] The tea tree waste includes tea tree branches, tea leaves, tea dregs, and tea stems.

[0022] film

[0023] The film is prepared by processing tea tree branches and then reacting them with a biodegradable polymer.

[0024] The method for preparing the thin film is as follows:

[0025] S1. Select discarded tea tree branches, wash, dry, chop, and dry them to obtain tea tree branch powder; soak the tea tree powder in a solution and stir.

[0026] S2. Add the soaked tea tree powder to an acidic solution for hydrolysis, then filter and wash until neutral to obtain the processed tea tree branches;

[0027] S3. The prepared tea tree branches are added to the chitosan solution; after being mechanically stirred and mixed evenly at 60°C, the mixture is allowed to stand to obtain the final product.

[0028] The solution in S1 consists of: 18% potassium hydroxide, 3% sodium metasilicate pentahydrate, 1.5% sodium polyphosphate, 2% sodium sulfide, and the remainder water.

[0029] The acidic solution in S2 is a 45wt% aqueous solution of H2SO4.

[0030] The chitosan solution in S3 is an 8wt% chitosan-acetic acid solution. The chitosan was purchased from Qingdao Bozhi Huili Biotechnology Co., Ltd., with a degree of deacetylation (%) ≥90% and a viscosity of 20-500 cps.

[0031] bio-fertilizer

[0032] The bio-fertilizer is prepared by fermenting tea leaves, tea dregs, and tea stems.

[0033] The preparation method of the bio-fertilizer is as follows: After cleaning, tea leaves, tea dregs and tea stems are mixed, stirred and ground into powder. After grinding, the powder is added to the fermentation liquid and mixed. The mixture is stirred and aerated at room temperature for fermentation. After fermentation, the bio-fertilizer can be obtained.

[0034] The fermentation strains are Bacillus and Candida albicans.

[0035] Among them, Bacillus sp. was purchased from the China Industrial Microbial Culture Collection Center (CICC21312).

[0036] Candida blanc was purchased from the China Industrial Microbial Culture Collection Center (CICC33217).

[0037] The fermentation broth consisted of: 5.0 g peptone, 3.0 g beef extract powder, 5.0 g NaCl, 5 mg MnSO4·H2O, and 1000.0 mL distilled water.

[0038] The inoculum amount was 8 wt%, Bacillus was 3 wt%, and Candida albicans was 5 wt%.

[0039] Fermentation time: 24 hours.

[0040] This invention provides a tea tree planting film, which is prepared by the method described above.

[0041] This invention provides a bio-fertilizer, which is prepared by the method described above.

[0042] The present invention provides a method for recycling tea tree waste, which is applied to tea tree cultivation.

[0043] The present invention provides a method for reusing tea tree waste, which is applied to improve the efficiency of tea garden soil.

[0044] The present invention will be further explained below with reference to specific embodiments.

[0045] Example 1

[0046] This embodiment provides a tea tree planting film, the preparation method of which is as follows:

[0047] S1. Select discarded tea tree branches, wash, dry, chop, and dry them to obtain tea tree branch powder; soak the tea tree powder in a solution and stir.

[0048] S2. Add the soaked tea tree powder to an acidic solution for hydrolysis. Stir at 80°C for 2 hours, then filter and wash until neutral to obtain the processed tea tree branches.

[0049] S3. The treated tea branches are added to a chitosan solution; after being mechanically stirred and mixed evenly at 60°C, the mixture is allowed to stand. The mass percentage of the treated tea branches added to the chitosan solution is 5%.

[0050] The solution in S1 consists of: 18% potassium hydroxide, 3% sodium metasilicate pentahydrate, 1.5% sodium polyphosphate, 2% sodium sulfide, and the remainder water.

[0051] The acidic solution in S2 is a 45wt% aqueous solution of H2SO4.

[0052] The chitosan solution in S3 is an 8wt% chitosan-acetic acid solution. The chitosan was purchased from Qingdao Bozhi Huili Biotechnology Co., Ltd., with a degree of deacetylation (%) ≥90% and a viscosity of 20-500 cps.

[0053] The method of using the film is to spread the prepared gel evenly on a plate, and after drying, the film is obtained. Then, the film is spread on the soil for absorption.

[0054] Example 2

[0055] This embodiment provides a bio-fertilizer, the preparation method of which is as follows: clean tea leaves, tea dregs and tea stems are mixed, stirred and ground into powder. After being ground, they are added to the fermentation liquid and mixed. The mixture is stirred and aerated at room temperature for fermentation. After fermentation, the bio-fertilizer can be obtained.

[0056] The fermentation strains are Bacillus and Candida albicans.

[0057] Among them, Bacillus sp. was purchased from the China Industrial Microbial Culture Collection Center (CICC21312).

[0058] Candida blanc was purchased from the China Industrial Microbial Culture Collection Center (CICC33217).

[0059] The fermentation broth consisted of: 5.0 g peptone, 3.0 g beef extract powder, 5.0 g NaCl, 5 mg MnSO4·H2O, and 1000.0 mL distilled water.

[0060] The inoculum amount was 8 wt%, Bacillus was 3 wt%, and Candida albicans was 5 wt%.

[0061] Fermentation time: 24 hours.

[0062] The bio-fertilizer is used by mixing it with the tea tree soil in a certain proportion.

[0063] Example 3

[0064] This embodiment provides a bio-fertilizer, the preparation method of which is as follows: clean tea leaves, tea dregs and tea stems are mixed, stirred and ground into powder. After being ground, they are added to the fermentation liquid and mixed. The mixture is stirred and aerated at room temperature for fermentation. After fermentation, the bio-fertilizer can be obtained.

[0065] The fermentation strain is Candida blancii.

[0066] Candida blanc was purchased from the China Industrial Microbial Culture Collection Center (CICC33217).

[0067] The fermentation broth consisted of: 5.0 g peptone, 3.0 g beef extract powder, 5.0 g NaCl, 5 mg MnSO4·H2O, and 1000.0 mL distilled water.

[0068] The inoculum amount was 8 wt%.

[0069] Fermentation time: 24 hours.

[0070] The bio-fertilizer is used by mixing it with the tea tree soil in a certain proportion.

[0071] Example 4

[0072] This embodiment provides a bio-fertilizer, which is prepared as follows: cleaned tea leaves, tea dregs, and tea stems are mixed, stirred, and ground to obtain the bio-fertilizer.

[0073] The bio-fertilizer is used by mixing it with the tea tree soil in a certain proportion.

[0074] Example 5

[0075] This embodiment provides a soil treatment agent for tea tree planting, comprising the tea tree planting film described in Embodiment 1 and the bio-fertilizer described in Embodiment 2.

[0076] The soil treatment method involves first mixing the bio-fertilizer with the soil, and then covering it with a thin film.

[0077] Example 6

[0078] This embodiment provides a tea tree planting film, the preparation method of which is as follows:

[0079] S1. Select waste tea tree branches, wash, dry, chop, and dry them to obtain tea tree branch powder; soak the tea tree powder in a solution and stir; filter and wash until neutral to obtain the processed tea tree branches;

[0080] S2. The treated tea branches are added to a chitosan solution; after being mechanically stirred and mixed evenly at 60°C, the mixture is allowed to stand. The mass percentage of the treated tea branches added to the chitosan solution is 5%.

[0081] The acidic solution in S2 is a 45wt% aqueous solution of H2SO4.

[0082] The chitosan solution in S3 is an 8wt% chitosan-acetic acid solution. The chitosan was purchased from Qingdao Bozhi Huili Biotechnology Co., Ltd., with a degree of deacetylation (%) ≥90% and a viscosity of 20-500 cps.

[0083] Performance testing

[0084] Test 1: The products prepared in Examples 1-6 were stored at 25℃ 40% RH, 50℃ 40% RH, and 50℃ 80% RH for 90 days, and the product condition was observed.

[0085] Test 2: The products obtained in Examples 1-5 were added to the tea plant soil to observe soil conditions and yield. The application rate was 1.125 kg·m³. -2 An unused product was set up as a control group.

[0086] The original soil conditions were as follows: basic physical and chemical properties: organic matter 11.35 g·kg⁻¹-1 Alkaline nitrogen content: 187 mg·kg -1 Available phosphorus 51.87 mg·kg -1 109 mg / kg of readily available potassium -1 The clay content (<1 µm) was 37.2%. The soil mechanical composition was 28.1% sand, 33.5% silt, and 38.4% clay.

[0087] Soil organic matter content was determined using the potassium dichromate titration method; available nitrogen was determined using the alkaline diffusion method; and available phosphorus was determined using 0.5 mol·L⁻¹. -1 NaHCO3 extraction-molybdenum blue colorimetric method; available potassium was determined by NH4OAc extraction-flame photometry. Soil mechanical composition was classified according to the USDA (United States Agricultural Department) standards: sand (2-0.05 mm), silt (0.05-0.002 mm), and clay (<0.002 mm). Soil samples were desalted and deorganized before being measured using a laser particle size analyzer.

[0088] Table 1 Production Results

[0089]

[0090] Table 2 Effects on soil nutrients

[0091]

[0092] After mixing with the products obtained in Examples 2-5, soil particle size was tested. After tea harvest, compared with the control group, the sand content in the treatments of Examples 4, 3, 2, and 5 increased by 2.17%, 6.14%, 8.04%, and 12.06%, respectively. The clay content in the treatments of Examples 4, 3, 2, and 5 decreased by 1.19%, 4.99%, 6.95%, and 12.04%, respectively. It can be seen that the products obtained in Examples 2-5 can cause a significant shift in soil particle size.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A soil treatment agent for tea tree cultivation, characterized in that, Includes tea tree planting film and bio-fertilizer; The method for preparing the tea tree planting film is as follows: S1. Select discarded tea tree branches, wash, dry, chop, and dry them to obtain tea tree branch powder; soak the tea tree powder in a solution and stir. S2. Add the soaked tea tree powder to an acidic solution for hydrolysis. Stir at 80°C for 2 hours, then filter and wash until neutral to obtain the processed tea tree branches. S3. The prepared tea tree branches are added to the chitosan solution; After being mechanically stirred and mixed evenly at 60℃, the mixture is allowed to stand to obtain the final product; the treated tea tree branches are added to the chitosan solution at a mass percentage of 5%. The solution in S1 consists of: 18% potassium hydroxide, 3% sodium metasilicate pentahydrate, 1.5% sodium polyphosphate, 2% sodium sulfide, and the remainder is water. The acidic solution in S2 is a 45wt% aqueous solution of H2SO4; The chitosan solution in S3 is an 8wt% chitosan-acetic acid solution. The chitosan was purchased from Qingdao Bozhi Huili Biotechnology Co., Ltd., with a degree of deacetylation (%) ≥90% and a viscosity of 20-500 cps. The method of using the film is to spread the prepared gel evenly on a plate, and after drying, the film can be obtained. Then, the film is spread on the soil for absorption. The preparation method of the bio-fertilizer is as follows: After cleaning, tea leaves, tea dregs and tea stems are mixed, stirred and ground into powder. After being ground, they are added to the fermentation liquid and mixed. The mixture is stirred and aerated at room temperature for fermentation. After fermentation, the bio-fertilizer can be obtained. The fermentation strains are: Bacillus subtilis and Candida albicans; The fermentation broth consisted of: 5.0 g peptone, 3.0 g beef extract powder, 5.0 g NaCl, 5 mg MnSO4·H2O, and 1000.0 mL distilled water. The inoculum amount was 8 wt%, Bacillus spp. was 3 wt%, and Candida albicans was 5 wt%; the fermentation time was 24 h.

2. The application of the soil treatment agent according to claim 1 in tea tree cultivation.

3. The application of the soil treatment agent according to claim 1 in enhancing the efficiency of tea garden soil.

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