A kind of insecticide containing tea saponin and preparation method thereof

A technology of insecticide and solvent, which is applied in the field of insecticide containing tea saponin and its preparation, can solve the problems that threaten human health and life, pests are prone to drug resistance, and easily cause major diseases, so as to reduce residues Quantity, less environmental pollution, simple preparation method

Active Publication Date: 2020-05-22
三江县稻香山茶油生态发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that it pollutes the environment. The residual pesticides are concentrated in the food chain through the concentration of the food chain, resulting in the accumulation of residues in the food. After people eat, they will accumulate in the body, threatening human health and life, and easily causing major diseases, such as cancer. Pests are easy to drug resistance

Method used

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  • A kind of insecticide containing tea saponin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A preparation method of an insecticide, the preparation method is as follows:

[0046] (1) Pulverize the camellia seed cake after oil extraction and degreasing, weigh 200g of tea seed cake powder, put it into the reflux extraction equipment, add 1800g 60vt% ethanol aqueous solution, heat the camellia seed cake powder to reflux extraction for 5h, filter and collect the filtrate, Add 1400 g of 60vt% ethanol aqueous solution to the filter residue, heat and reflux for extraction for 3 hours, collect the filtrate by filtration, and combine the filtrates to obtain the camellia oleifera seed extract. The extract is heated and concentrated under the condition of -0.07~-0.08Mpa to make an extract, add 10 times the weight of pure water to the extract to dissolve, and then extract with a mixed solvent of ether and ethyl acetate with a volume ratio of 1:4. 4 times, each mixed solvent dosage is 3 times of the weight of the extract. Collect the organic solvent layer solutions, combi...

Embodiment 2

[0050] A preparation method of an insecticide, the preparation method is as follows:

[0051](1) Pulverize the Camellia oleifera seed cake after oil extraction and degreasing, weigh 200g of the tea seed cake powder, put it into a reflux extraction device, add 1600g of 70vt% ethanol aqueous solution, heat and reflux the Camellia oleifera seed cake powder for 6h, filter and collect the filtrate, Add 1600 g of 50vt% ethanol aqueous solution to the filter residue, heat and reflux for extraction for 2 hours, collect the filtrate by filtration, and combine the filtrates to obtain the camellia oleifera seed extract. The extract is heated and concentrated under the condition of -0.07~-0.08Mpa to make an extract, add 10 times the weight of pure water to the extract to dissolve, and then extract with a mixed solvent of ether and ethyl acetate with a volume ratio of 1:3. 3 times, each mixed solvent dosage is 4 times of the weight of the extract. Collect the organic solvent layer solutio...

Embodiment 3

[0055] A preparation method of an insecticide, the preparation method is as follows:

[0056] (1) Pulverize the camellia seed cake after oil extraction and degreasing, weigh 200g of tea seed cake powder, put it into a reflux extraction device, add 2000g of 50vt% ethanol aqueous solution, heat and reflux the camellia seed cake powder for 4h, filter and collect the filtrate, Add 1200 g of 70 vt% ethanol aqueous solution to the filter residue, heat and reflux for extraction for 3 hours, collect the filtrate by filtration, and combine the filtrates to obtain the camellia oleifera seed extract. The extract is heated and concentrated under the condition of -0.07~-0.08Mpa to make an extract, add 8 times the weight of pure water to the extract to dissolve, and then extract with a mixed solvent of ether and ethyl acetate with a volume ratio of 1:4. 4 times, each mixed solvent dosage is 3 times of the weight of the extract. Collect the organic solvent layer solution, combine, add anhyd...

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Abstract

The invention discloses an insecticide containing tea saponin. The insecticide is prepared from the following components in percentage by weight: 1.5%-2.0% of tea saponin, 0.8%-1.2% of an arenaria rhodantha extract, 1.0%-1.3% of a surfactant and the balance of a solvent. The invention further provides a preparation method of the insecticide. The effective components of the insecticide are extracted from camellia seed cakes and arenaria rhodantha, and the insecticide, which is a botanical insecticide, is environment-friendly with low environmental pollution. Compared with that of chemical insecticides, the preparation method is simple, and does not generate a large number of degradation-resistant toxic chemical substances generated in chemical synthesis; the insecticide is easily biodegradable, so that residual pesticides on plants are greatly reduced, and the damage caused by a bioconcentration effect on human health through a food chain is avoided; and by virtue of combined use of the tea saponin and the arenaria rhodantha extract, the killing capacity to tea shoot borers is obviously enhanced, the food refusal and the contact toxicity are caused to tea shoot borers, and the killing rate within 72h can reach 65% or above.

Description

technical field [0001] The invention belongs to the technical field of insecticides, and in particular relates to an insecticide containing tea saponin and a preparation method thereof. Background technique [0002] Chemical pesticides are poisonous chemicals that can kill crops and tree pests with a small amount, or have a significant impact on the physiological activities of pests. The advantages of chemical insecticides are low cost of use, quick effect, many varieties, and wide control targets. The disadvantage is that it pollutes the environment. The residual pesticides are concentrated in the food chain through the concentration of the food chain, resulting in the accumulation of residues in the food. After people eat, they will accumulate in the body, threatening human health and life, and easily causing major diseases, such as cancer. Pests are easy to develop drug resistance. [0003] The tea shoot moth, Lepidoptera, Apiopteridae, hosts tea, camellia oleifera and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/20A01N43/16A01P7/04
CPCA01N43/16A01N65/00A01N65/20
Inventor 荣佳黎
Owner 三江县稻香山茶油生态发展有限公司
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