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Cyclodextrins as molecular carriers for biopesticides: a review

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Abstract

Nature is a source of biologically active products that can act as fungicides, bactericides, acaricides, herbicides and insecticides. However, the application of these biopesticides can be challenging because they are generally insoluble in aqueous phases, highly volatile and unstable. One strategy to promote their use is their encapsulation into natural hosts, cyclodextrins. Cyclodextrins are food-grade and readily biodegradable oligosaccharides obtained from the enzymatic degradation of starch. Encapsulation in cyclodextrins would offer many advantages such as increased solubility, lower release rates and protection against chemical and physical degradation. Herein, we review the efficacy of cyclodextrin/natural compound inclusion complexes for crop protection. We discuss preharvest treatment and the different stages of the postharvest handling such as storage, distribution, packaging and marketing.

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Abbreviations

C:

Container

CD:

Cyclodextrin

CDgCS:

Cyclodextrin-grafted chitosan

CFU:

Colony-forming unit

CP:

Conservation period

CS:

Chitosan

CSO:

Chito-oligosaccharide

EC:

European Commission

EGCG:

Epigallocatechin gallate

EO:

Essential oil

EU:

European Union

FAO:

Food and Agriculture Organization of the United Nations

GA:

Gum Arabic

GRAS:

Generally recognized As Safe

HP-β-CD:

2-Hydroxylpropyl-β-cyclodextrin

IC:

Inclusion complex

LDPE:

Low-density polyethylene

LG:

Lemongrass

Me-β-CD:

Methyl-β-cyclodextrin

MFC:

Minimum fungicidal concentration

MOF:

Metal-organic framework

OG:

Octyl gallate

PCL:

Polycaprolactone

PHBV:

Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)

PLA:

Polylactic acid

PVA:

Polyvinyl alcohol

Q:

Quantity

RH:

Relative humidity

T:

Temperature

TVC:

Total viable count

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Funding

Authors are grateful to the ANRT for the Convention Industrielle de Formation par la REcherche (CIFRE No. 2022/0357).

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Contributions

GD contributed to writing—original draft, and visualization. MK was involved in writing—review and editing. SF contributed to conceptualization and writing—review and editing. LP was involved in writing—review and editing. AS contributed to funding acquisition.

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Correspondence to Sophie Fourmentin.

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The authors declare that they have no conflict of interest.

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Decool, G., Kfoury, M., Paitel, L. et al. Cyclodextrins as molecular carriers for biopesticides: a review. Environ Chem Lett 22, 321–353 (2024). https://doi.org/10.1007/s10311-023-01658-3

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  • DOI: https://doi.org/10.1007/s10311-023-01658-3

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