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Cellulose nanocrystals for crop protection: leaf adhesion and controlled delivery of bioactive molecules.
- Source :
-
Green Chemistry . 4/7/2023, Vol. 25 Issue 7, p2690-2698. 9p. - Publication Year :
- 2023
-
Abstract
- The development of new approaches for pesticide delivery is a most relevant subject in the area of crop protection, which typically involves relatively high pesticide dosing combined with low deposition and limited biosafety. Herein, we investigate a pesticide carrier system based on plant-derived, eco-friendly cellulose nanocrystals (CNCs) modified with β-cyclodextrin (β-CD) and tannic acid (TA). A broad-spectrum and widely used pesticide, fenitrothion (XCM), was shown to bind to the carrier through hydrophobic and hydrogen bonding interactions and Cu2+ coordination, enabling pH-controlled delivery. The high axial aspect of CNCs and surface features endowed by β-CD binding facilitated contact and enhanced the deposition efficiency on the foliage. The tannic acid further improved wetting, adhesion and retention on leaves (1.8-fold higher than TA-free systems). The bioactivity tests showed efficient antifungal (74%) and insecticidal (97%) effects along with excellent biosafety, highlighting the introduced carrier for its promise in the area of pesticide delivery. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14639262
- Volume :
- 25
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Green Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 162874470
- Full Text :
- https://doi.org/10.1039/d3gc00328k