Photoprotection for deltamethrin using chitosan-coated beeswax solid lipid nanoparticles

BACKGROUND: In the natural environment, photodegradation is one of the most common degradative processes of pesticides. In order to reduce the photodegradation of pesticides, and so increase their killing activity against target pests, chitosan‐coated beeswax solid lipid nanoparticles (CH‐BSLNs) wer...

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Bibliographic Details
Published in:Pest management science 2012-07, Vol.68 (7), p.1062-1068
Main Authors: Nguyen, Hiep Minh, Hwang, In-Cheon, Park, Jae-Won, Park, Hyun-Jin
Format: Article
Language:English
Subjects:
beeswax
Biological and medical sciences
Capsules
Chemical compounds
chitosan
Chitosan - chemistry
Control
deltamethrin
Fundamental and applied biological sciences. Psychology
Insecticides
Insecticides - chemistry
Lipids
Nanoparticles
Nanoparticles - chemistry
Nitriles - chemistry
Pest control
photodegradation
Photolysis
Phytopathology. Animal pests. Plant and forest protection
Protozoa. Invertebrates
Pyrethrins - chemistry
solid lipid nanoparticles
Sonication
Surface-Active Agents - chemistry
Waxes - chemistry
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Summary:BACKGROUND: In the natural environment, photodegradation is one of the most common degradative processes of pesticides. In order to reduce the photodegradation of pesticides, and so increase their killing activity against target pests, chitosan‐coated beeswax solid lipid nanoparticles (CH‐BSLNs) were prepared by a combination of hot homogenization and sonication, with deltamethrin as an active ingredient. RESULTS: Under optimal conditions, the highest encapsulation efficiency (95%) and a high payload of deltamethrin (approximately 12.5%) were achieved. In direct photolysis, in the case of CH‐BSLNs after UV irradiation for 24 h, 37.3% of deltamethrin remained, as opposed to only 14.6% of the free‐form deltamethrin. In addition, in indirect photolysis, in the case of CH‐BSLNs after UV irradiation for 2 h in 2% acetone solution, approximately 74.5% of deltamethrin remained, as opposed to only 37.6% of the free‐form deltamethrin. CONCLUSION: CH‐BSLNs showed good protection for deltamethrin against photodegradation. This novel nanocarrier may be useful in crop protection as an economical strategy to enhance the effect of pesticides in the field and protect the environment as well. Copyright © 2012 Society of Chemical Industry
ISSN:1526-498X
1526-4998
DOI:10.1002/ps.3268