Environment-friendly bactericide and preparation method thereof
By combining the extract of green and white pepper leaves with hydrogenated castor oil and fatty alcohol polyoxyethylene ether, environmentally friendly bactericides are prepared, which solves the problems of high toxicity and waste of resources in existing leather bactericides, and achieves low-toxic and efficient bactericidal effects and Effective utilization of resources.
Patent Information
- Application Number
- CN202411671893.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-02-18
AI Technical Summary
Existing leather fungicides are highly toxic, prone to drug resistance, and are seriously wasted resources, making it difficult to effectively utilize the by-products of green and pepper.
Combine the extract of blue and white pepper leaves with hydrogenated castor oil and fatty alcohol polyoxyethylene ether to prepare an environmentally friendly bactericide, which is low-toxic, efficient, easy to degrade, and is environmentally friendly.
It has achieved a low-toxic and efficient leather sterilization effect, reduced waste emissions, and provided a direction for the development and utilization of green and pepper by-products.
Smart Images
Figure SMS_1
Abstract
Description
Technical Field
[0001] The invention belongs to the field of leather sterilization, and specifically relates to an environmentally friendly fungicide for leather and a preparation method thereof. Background Art
[0002] Leather making is the process of tanning raw hides into leather, that is, the transformation from hides to leather. Raw hides carry bacteria, and the main component of raw hides is protein, which is a nutrient source for the growth and reproduction of microorganisms. Once the temperature and moisture are suitable, microorganisms will multiply rapidly, causing the hides to rot or mold, thus affecting the quality of the finished leather. Therefore, it is necessary to add fungicides during the leather making process.
[0003] Existing leather fungicides are mainly chemically synthesized, which have good effects but are highly toxic and prone to drug resistance. Once widely used fungicides, such as chlorophenol-containing fungicides, are restricted due to their toxic side effects, so it is imperative to develop green and environmentally friendly fungicides. In recent years, natural plant antimicrobial agents have gradually become a research hotspot at home and abroad due to their advantages such as low toxicity, high efficiency, easy degradation and low environmental pollution.
[0004] Zanthoxylum bungeanum is a perennial deciduous small tree of Rutaceae and Zanthoxylum genus. It can be divided into two categories: red and green. At present, the planting area of Zanthoxylum bungeanum in my country is nearly 20 million mu, of which about 70% is green. Most of the green pepper is picked by pruning large branches, which causes a large amount of green pepper branches and leaves to accumulate and waste. Therefore, the development and utilization of green pepper by-products is imminent. Green pepper leaf extract has antibacterial effect and is a natural plant antibacterial agent. Its application in the field of leather sterilization can not only avoid waste of resources, but also promote the development and utilization of green pepper by-products and promote the development of the pepper industry. Summary of the invention
[0005] In view of the above problems, the present invention provides an environmentally friendly fungicide and a preparation method thereof. The present invention compounds a Zanthoxylum bungeanum leaf extract with a surfactant to prepare an environmentally friendly fungicide with low toxicity, high efficiency, easy to degrade, and environmentally friendly. At the same time, it also realizes the waste utilization of the Zanthoxylum bungeanum branches and leaves, reduces the discharge of waste, and provides a direction for promoting the development and utilization of the by-products of the Zanthoxylum bungeanum.
[0006] The present invention is achieved through the following technical solutions: A method for preparing an environmentally friendly fungicide comprises the following steps: The green pepper leaf extract and hydrogenated castor oil are mixed in proportion and stirred evenly; fatty alcohol polyoxyethylene ether is added to the above system in proportion, stirred evenly, and then water is added, and the mixture is mixed and stirred evenly to obtain the environmentally friendly fungicide; The green pepper is one or more of Jinyang green pepper, Yunnan Zhaotong green pepper, Chongqing Jiangjin green pepper, Yunnan Huaping green pepper, and Sichuan pepper; The extraction method of the green pepper leaf extract is as follows: after the green pepper leaves are air-dried or hot-air-dried, ultrasonic extraction is performed, the extraction solvent is 75% to 95% ethanol, the liquid-solid ratio is 2:1 to 10:1, the number of extractions is 2 to 3 times, the single extraction time is 60 to 90 minutes, and then filtering is performed to collect the filtrate. The filtrate is subjected to a Soxhlet extractor to recover ethanol for reuse, and the concentrated extract is the green pepper leaf extract.
[0007] The hydrogenated castor oil is one or more of PEG40 and PEG60; The fatty alcohol polyoxyethylene ether has a general formula of RO(CH2CH2O)nH, where R is a saturated or unsaturated C12-18 hydrocarbon group, including a straight-chain hydrocarbon group and a branched hydrocarbon group, and n=8-20; To further achieve the purpose of the present invention, preferably, the extraction solvent is 95% ethanol, the liquid-to-solid ratio is 5:1, the number of extractions is 2 times, and the single extraction time is 90 minutes; Preferably, the fatty alcohol polyoxyethylene ether is one or more of AEO9 and JFC.
[0008] The beneficial effects of the present invention are as follows: the prepared environmentally friendly fungicide is low-toxic, highly effective, easily degradable, and environmentally friendly; at the same time, waste utilization of green pepper leaves is realized, waste discharge is reduced, and a direction is provided for promoting the development and utilization of green pepper by-products. DETAILED DESCRIPTION
[0009] The present invention is further described below by way of examples. It should be noted that the examples do not limit the scope of protection claimed for the present invention.
[0010] Example 1: 28 g of Jiangjin green pepper leaf extract and 14 g of PEG60 were mixed and stirred evenly, and 8 g of AEO9 was added. After stirring evenly, water was added and mixed evenly to obtain the environmentally friendly fungicide.
[0011] Example 2: 28g of Yunnan Zhaotong green prickly ash leaf extract and 14g of PEG60 were mixed and stirred evenly, and 8g of AEO9 was added. After stirring evenly, water was added and mixed and stirred evenly to obtain the environmentally friendly fungicide.
[0012] Example 3: 28 g of Zanthoxylum bungeanum leaf extract and 14 g of PEG60 were mixed and stirred evenly, and 8 g of AEO9 was added. After stirring evenly, water was added and mixed evenly to obtain the environmentally friendly fungicide.
[0013] Comparative Example 1: Commercially available fungicide Sterilization performance test: Pre-soaking process: calculated by tare weight, water 300%, soda ash 0.8%, JFC 0.2%, fungicide 0.4%, degreasing agent 0.3%, rotate for 20 minutes, add 0.2% fungicide, rotate for 2 minutes, stop for 58 minutes, and then take out the drum.
[0014] Main immersion process: calculated by tare weight, water 300%, soda ash 0.6%, JFC 0.2%, fungicide 0.4%, degreasing agent 0.5%, rotate for 20 minutes, add 0.2% fungicide, rotate for 2 minutes, stop for 58 minutes, and then take out the drum.
[0015] The initial bacterial count (before adding bactericide) and the bacterial count at the drum exit of the pre-immersion water and main immersion water were detected by ATP fluorescence detector. The test results are shown in Table 1.
[0016] Table 1
[0017] It can be seen from Table 1 that the fungicide prepared by the present invention has excellent fungicidal effect and can achieve the effect of commercial fungicides; the green pepper extracts from three different origins all have fungicidal effects, and the development and utilization of green pepper leaves are not limited to the origin.
[0018] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. It should be pointed out that those skilled in the art are capable of modifying the technical solutions described in the embodiments or making equivalent replacements for some of the technical features therein. Such modifications or replacements should also be regarded as the scope of protection of the present invention.
Claims
1. An environmentally friendly fungicide, characterized in that: The invention comprises the following components in parts by weight: 15 to 35 parts of green prickly ash leaf extract, 7 to 18 parts of hydrogenated castor oil, 5 to 15 parts of fatty alcohol polyoxyethylene ether and 40 to 70 parts of water.
2. The environmentally friendly fungicide according to claim 1, characterized in that: The green pepper is one or more of Jinyang green pepper, Yunnan Zhaotong green pepper, Chongqing Jiangjin green pepper, Yunnan Huaping green pepper, and Sichuan pepper.
3. The environmentally friendly fungicide according to claim 1, characterized in that: The extraction method of the green pepper leaf extract is as follows: after the green pepper leaves are air-dried or hot-air-dried, ultrasonic extraction is performed, the extraction solvent is 75% to 95% ethanol, the liquid-solid ratio is 2:1 to 10:1, the number of extractions is 2 to 3 times, the single extraction time is 60 to 90 minutes, and then filtering is performed to collect the filtrate. The filtrate is subjected to a Soxhlet extractor to recover ethanol for reuse, and the concentrated extract is the green pepper leaf extract.
4. The environmentally friendly fungicide according to claim 1, characterized in that: The hydrogenated castor oil is one or more of PEG40 and PEG60.
5. The environmentally friendly fungicide according to claim 1, characterized in that: The general formula of the fatty alcohol polyoxyethylene ether is RO(CH2CH2O)nH, R is a saturated or unsaturated C12-18 hydrocarbon group, including a straight-chain hydrocarbon group and a branched hydrocarbon group, and n=6-20.
6. The method for preparing an environmentally friendly fungicide according to claim 1, characterized in that: The green pepper leaf extract and hydrogenated castor oil are mixed in proportion and stirred evenly; fatty alcohol polyoxyethylene ether is added to the above system in proportion, stirred evenly, and then water is added, and the mixture is mixed and stirred evenly to obtain the environmentally friendly fungicide.