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Method for degrading pesticide residues on fruit and vegetables

A technology for pesticide residues and fruits and vegetables, which is applied in the field of degrading pesticide residues in fruits and vegetables, can solve the problems of little application value, unfavorable storage of fruits and vegetables, and little effect of removing pesticide residues, and achieves short time consumption, easy decomposition, and low degradation cost. Effect

Inactive Publication Date: 2014-09-24
HUNAN AGRI PRODS PROCESSING INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, methods such as soaking in clear water, peeling, and heating are mainly used to remove pesticide residues in fruits and vegetables. These methods have little effect on removing pesticide residues, and are not conducive to the storage of fruits and vegetables, and have little application value.

Method used

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  • Method for degrading pesticide residues on fruit and vegetables
  • Method for degrading pesticide residues on fruit and vegetables
  • Method for degrading pesticide residues on fruit and vegetables

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Preparation stage: Dissolve carbendazim, chlorpyrifos, cyhalothrin, and bifenthrin in 10L of water to obtain a mixed pesticide solution, including carbendazim, chlorpyrifos, cyhalothrin, and bifenthrin The concentration is 10ppm. Select 36 organic citrus with basically the same shape and size, and divide them into 6 parts on average. 1 part of unsoaked citrus is used as the control group, and the remaining 5 parts of citrus are placed in the mixed pesticide solution and soaked for 15 minutes, then taken out and dried in the shade, and then 4 parts are selected. As the experimental group, 1 as the control group.

[0042] Experimental stage:

[0043] 1. Mixing: Take 15L of ozone water with a concentration of 35mg / L from the high-concentration ozone generator and put it into the degradation device, add 7.5g nano-titanium dioxide (the particle size of nano-titanium dioxide is 30nm, and the kind is anatase), so that The concentration of nano titanium dioxide is 0.5mg / mL. ...

Embodiment 2

[0050] Preparation stage: Dissolve carbendazim, chlorpyrifos, cyhalothrin, and bifenthrin in 10L of water to obtain a mixed pesticide solution, including carbendazim, chlorpyrifos, cyhalothrin, and bifenthrin The concentration is 20ppm. Select 36 organic citrus with basically the same shape and size, and divide them into 6 parts on average. 1 part of unsoaked citrus is used as the control group, and the remaining 5 parts of citrus are completely soaked in the mixed pesticide solution for 25 minutes, then taken out and dried in the shade, and 4 parts are selected immediately. As the experimental group, 1 as the control group.

[0051] Experimental stage:

[0052] 1. Mixing: Take 15L of ozone water with a concentration of 65mg / L from the high-concentration ozone generating device and put it into the degradation device, add 12g of nano-titanium dioxide (the particle size of nano-titanium dioxide is 30nm, and the variety is anatase) to make the nano-titanium dioxide The concentr...

Embodiment 3

[0059] Preparation stage: Dissolve carbendazim, chlorpyrifos, cyhalothrin, and bifenthrin in 10L of water to obtain a mixed pesticide solution, including carbendazim, chlorpyrifos, cyhalothrin, and bifenthrin The concentration is 5ppm. Select 36 organic citrus with basically the same shape and size, and divide them into 6 parts on average. 1 part of unsoaked citrus is used as the control group, and the remaining 5 parts of citrus are completely soaked in the mixed pesticide solution for 25 minutes, then taken out and dried in the shade, and 4 parts are selected immediately. As the experimental group, 1 as the control group.

[0060] Experimental stage:

[0061] 1. Mixing: Take 15L of ozone water with a concentration of 30mg / L from the high-concentration ozone generator and put it into the degradation device, add 3.75g of nano-titanium dioxide (the particle size of nano-titanium dioxide is 50nm, and the kind is anatase), so that The concentration of nano titanium dioxide is 0...

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Abstract

The invention provides a method for degrading pesticide residues on fruit and vegetables. The method comprises the steps of mixing, adjusting pH, performing ultrasonic oscillation and UV (ultraviolet light)-irradiation. The steps are specifically as follows: mixing nanometer TiO2 with ozone water and adjusting pH to 11-12 with a pH modifier; performing ultrasonic oscillation, thereby acquiring a mixed solution; putting the fruit and vegetables into the mixed solution, introducing air into the mixed solution and irradiating for 20min-90min with a UV lamp, thereby finishing the degrading of the pesticide on the fruit and vegetables. According to the invention, after photocatalysis and ozone combined degradation, the pesticide residues on the fruit and vegetables are quickly degraded. The method has the advantages of high efficiency, low cost, safety, environmental protection, and the like.

Description

technical field [0001] The invention relates to a method for degrading pesticides, in particular to a method for degrading pesticide residues in fruits and vegetables. Background technique [0002] Pesticides are auxiliary agents used by humans to prevent and control agricultural, forestry and animal husbandry diseases, weed pests and other harmful organisms, control crop growth regulation, and improve drug efficacy. The contribution to prevention and control is indelible. In recent years, due to the warming of the climate, the long season of citrus, and a wide variety of pests and diseases, the damage of diseases and insect pests to agricultural products such as fruits and vegetables has become increasingly serious. At present, there is no supporting application of pest control technology, which has led to the extensive use of pesticides, fungicides, herbicides, etc., coupled with the lack of awareness and knowledge of the safe use of pesticides by fruit farmers, excessive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23N12/02
Inventor 李高阳朱玲风张菊华郭佳婧付复华李志坚何双吕慧英苏东林尚雪波
Owner HUNAN AGRI PRODS PROCESSING INST
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