Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Pesticide residue degradation agent taking chitosan oligosaccharide as active component and application thereof

A technology for the degradation of pesticide residues and active ingredients, applied in the fields of application, agriculture, and biocides, to achieve the effects of promoting plant growth, enhancing plant resistance, and being easy to popularize and apply

Active Publication Date: 2013-03-27
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no reports on pesticide residue degradation agents using chitosan oligosaccharide as an active ingredient.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: Chitooligosaccharide directly degrades pesticide residue test

[0021] The chitosan oligosaccharide is formulated into an aqueous solution with a mass concentration of 0.1%, 0.01%, and 0.005%.

[0022] Mass concentration 20% fenpropathrin emulsifiable concentrate is diluted with water to the volume concentration 1:200 as stated on the label. Take 0.1mL of chitosan oligosaccharide solution of each concentration, add them to plastic centrifuge tubes with stoppers respectively, then add 1.0mL of fenpropathrin diluent, as a control, take 0.1mL of water and add 1.0mL of fenpropathrin diluent, mix well and react overnight .

[0023] Take 0.5ml of the reaction solution in each centrifuge tube, add 5.0mL of acetone, shake well, centrifuge at 2500r / min for 30min, suck out the supernatant with a dropper, add 3.0mL of dichloromethane, 10mL of sodium sulfate solution (5g / L) , vibrated for 1 min, and after standing to separate layers, move the dichloromethane extract...

Embodiment 2

[0027] Embodiment 2: Chitosan oligosaccharide degrades pesticide residue test in tobacco

[0028] Test crop: Potted tobacco.

[0029] Pesticide treatment: 5 groups were designed in the experiment, 20 tobacco plants in each group. 20% fenpropathrin emulsifiable concentrate was diluted with water to a volume concentration of 1:200 as stated on the label, and the tobacco leaves were sprayed with a dosage of 200mL. After 3 days of treatment, 3 groups were randomly selected for spraying chitosan oligosaccharides. The mass concentration of oligosaccharides was 0.1%, 0.05%, and 0.01% in turn. Only spraying and water treatment after spraying were used as two groups of controls, and the amount of chitosan and water treatment was also 200 mL for each group.

[0030] Sample treatment: After 3 days of chitosan oligosaccharide treatment, collect the tobacco leaves of each treatment group, take 250 grams of samples for each treatment group, after fully crushing, extract 2 times with 1.6L a...

Embodiment 3

[0034] Embodiment 3: Chitosan oligosaccharide degrades soil pesticide residue experiment

[0035] The test site in the greenhouse was selected for the experiment, and the medicament was carbofuran insecticide (3% granule in mass concentration), which belongs to carbamate pesticides. Experimental design 5 treatment groups, each treatment area is 2m 2 , 10g of medicine for each group, evenly sprinkled on the surface of the test ground, and turned the ground. The treatment groups were treated with chitosan oligosaccharides 3 days after the application of pesticides, and the treatment mass concentrations were 0.005%, 0.01%, 0.05% and 0.1%. The water treatment was used as the control group, and the ground was evenly sprayed with 1L per square meter. plow the ground. After 3 days of chitosan oligosaccharide treatment, samples were taken for detection.

[0036] Remove large pieces such as stones from the soil, pass through a 40-mesh sieve, and mix well. Weigh 20 grams of sample, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a pesticide residue degradation agent taking chitosan oligosaccharide as an active component. The mass concentration of chitosan oligosaccharide in the degradation agent is 0.05-1g / L, the degree of deacetylation is 50-100%, and the average molecular weight is 500-5,000Da; and by spraying the degradation agent to the soil or the crops in a growing period and after picking or irrigating or soaking the soil or the crops in a growing period and after picking with the degradation agent, the pesticide residue in soil and crops can be obviously reduced (the degradation rate exceeds 65%). The degradation agent disclosed by the invention can degrade the pesticides of pyrethroids, carbamates, organochlorines, triazoles and the like; and the plants using the degradation agent include grain crops, cash crops, flowers, vegetables, fruits and the like. In the degradation agent disclosed by the invention, the active component chitosan oligosaccharide is a natural product which avoids environmental pollution of the processed soil and crops and is harmless to the health of human body and environment-friendly; and meanwhile, the pesticide residue degradation agent has the advantages of low cost, small application amount and the like, and is simple to use and easy to popularize and use.

Description

technical field [0001] The invention relates to a pesticide residue degradation agent, in particular to a pesticide residue degradation agent with chitosan oligosaccharide as an active ingredient and application thereof. Background technique [0002] The widespread use of pesticides, while preventing and controlling agricultural pests and recovering economic losses, has also inevitably caused varying degrees of pollution to the environment, soil, water bodies and agricultural products. In particular, unreasonable, unscientific, and non-standard use lead to a large amount of pesticide residues in the soil, and pesticide residues in vegetables exceed the standard. In recent years, accidents in my country's food safety field have occurred frequently, a large part of which is caused by pesticide residues caused by the abuse of chemical pesticides. In addition, because the amount of pesticides used in my country has greatly exceeded the world average level, my country's export o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A01N25/32C09K17/40A23L1/015C09K101/00A23L5/20
CPCA01N25/32A01N43/16A01N61/00
Inventor 杜昱光王文霞赵小明刘启顺尹恒
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com