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β-Cyclodextrin/eucalyptol inclusion complex for improved postharvest date moth control.

Hadhami Chargui1,2, Miriana Kfoury3, Abir Soltany2

  • 1Faculty of Sciences of Bizerte, University of Carthage, Tunis, Tunisia.

Pest Management Science
|June 14, 2025
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Summary
This summary is machine-generated.

Encapsulating eucalyptol in cyclodextrins (CDs) improves its controlled release and fumigation efficacy against the date moth (Ectomyelois ceratoniae). This biopesticide strategy offers reduced loss and prolonged activity for pest management.

Keywords:
Ectomyelois ceratoniaebiopesticidecyclodextrinfumigationnatural productrelease

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Area of Science:

  • Agricultural Science
  • Entomology
  • Materials Science

Background:

  • Pesticide use poses environmental and health risks, necessitating alternative pest control methods.
  • Eucalyptol, a natural compound, shows potential for controlling the date moth (Ectomyelois ceratoniae).
  • Eucalyptol's volatility limits its application; encapsulation in cyclodextrins (CDs) addresses this.

Purpose of the Study:

  • To evaluate the efficacy of cyclodextrin-encapsulated eucalyptol against the date moth.
  • To investigate the controlled release properties of eucalyptol from cyclodextrin complexes.
  • To assess the potential of this encapsulation strategy for developing novel biopesticides.

Main Methods:

  • Determined retention and formation constants of cyclodextrin/eucalyptol inclusion complexes.
  • Prepared solid inclusion complexes (powder and pellets) using varying molar ratios.
  • Conducted release studies under different environmental conditions (humidity, water immersion).
  • Assessed fumigant insecticidal activity against Ectomyelois ceratoniae larvae.

Main Results:

  • Cyclodextrins efficiently encapsulated eucalyptol, with a 1:1 molar ratio showing optimal encapsulation (79%) and loading (135 mg/g).
  • Pellets demonstrated slower eucalyptol release compared to powders.
  • Immersion in water significantly enhanced fumigant activity, adult emergence inhibition, and persistence of the encapsulated eucalyptol.

Conclusions:

  • Cyclodextrin encapsulation facilitates controlled release of eucalyptol, enhancing its fumigation efficacy against date moths.
  • This strategy offers a valuable approach for developing effective biopesticides with reduced environmental loss and extended activity.
  • The findings support the use of cyclodextrin-encapsulated eucalyptol as a sustainable pest management solution.