Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 70, Issue 16, Pages 5177-5185Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.1c07472
Keywords
biopesticide; encapsulation; essential oil; controlled release
Funding
- Universities of Reims Champagne-Ardenne (France)
- Liege (Belgium)
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This study provides an overview of an innovative method for retaining and releasing essential oils using the third-generation glycerodendrimer polypropylenimine (GD-PPI-3) in an aqueous formulation of Cinnamomum zeylanicum essential oil (CEO). The results show that the dendrimers can effectively prolong the release of essential oils and have herbicidal effects.
The Third-generation glycerodendrimer polypropylenimine (GD-PPI-3) can be used in an aqueous formulation of Cinnamomum zeylanicum essential oil (CEO). The purpose was to give an overview of this innovative method of retaining and releasing essential oils. The formulation consisted of 366 min stirring at 1735 rpm of the aqueous solution of 2 mM GD-PPI-3 with CEO. Some physicochemical properties of these formulations, as well as the release of trans-cinnamaldehyde, have been studied. A bimodal distribution and no concentration or aging effect were observed by optical microscopy. Moreover, the release kinetics showed the retention of volatile molecules in solution under various environmental conditions. The release profile was characterized by an initial burst followed by a steady release. The dendrimers allowed us to reduce this initial burst and extended the release by at least 15 h. In addition, the herbicidal effect was evaluated: inhibition of Arabidopsis thaliana seed germination was obtained for 7 days with a formulation of 12.5 mg/L CEO in a closed space and 360 mg/L CEO in an open space.
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