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Solid lipid particles in lipid films to control the diffusive release of 2-heptanone.
- Source :
- Pest Management Science; Aug2013, Vol. 69 Issue 8, p975-982, 8p
- Publication Year :
- 2013
-
Abstract
- Background Controlled-release formulations of bioactive agents are of increasing interest for effective pest control. Volatile 2-heptanone is a bioactive agent that has shown potential as a pesticide. The aim of this study was to investigate the kinetics of release of 2-heptanone incorporated into lipid films or composite solid lipid particle ( SLP) films. Results Effective 2-heptanone diffusivity was estimated to be between 0.1 and 2.5 mm<superscript>2</superscript> day<superscript>−1</superscript> during the first week and between 0.05 and 0.1 mm<superscript>2</superscript> day<superscript>−1</superscript> during the next 5 weeks. The films that showed better retention of 2-heptanone were the paraffin lipid films. Inclusion of SLPs into paraffin films increased the release rate of 2-heptanone, mainly owing to a decrease in the film firmness as the composite SLP film became less crystalline and more brittle. In contrast, SLPs decreased the kinetics of 2-heptanone release in Acetem films owing to an increase in the film firmness. Conclusions The results indicated that the use of SLPs as a method for controlled release can improve the delivery of the natural pesticide 2-heptanone if the SLPs have good compatibility with the matrix, leading to an increase in firmness of the films without increasing their porosity. Published 2012. This article is a U.S. Government work and is in the public domain in the USA. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 1526498X
- Volume :
- 69
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- Pest Management Science
- Publication Type :
- Academic Journal
- Accession number :
- 88931496
- Full Text :
- https://doi.org/10.1002/ps.3462