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This research aims to develop and analyze chitosan-based nanoemulsions for delivering eugenol and hexyl gallate against Xanthomonas citri.

March 21, 2026Applied Materials TodayOpen Access

Chitosan-based nanoemulsions as eugenol/hexyl gallate delivery systems against Xanthomonas citri

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Nanoemulsions deliver potent antimicrobial agents in citrus crops, highlighting an eco-friendly alternative to chemicals.

This research aims to develop and analyze chitosan-based nanoemulsions for delivering eugenol and hexyl gallate against Xanthomonas citri.
Developed two systems of nanoemulsions: a water-based and a chitosan-stabilized system.
Analyzed structures and properties using DLS, AFM, and TEM methods.
Conducted microbial assays to evaluate antimicrobial potency.
Performed ecotoxicity tests on stingless bee species.
Conducted greenhouse trials on sweet orange.
Chitosan-stabilized nanoemulsions showed higher potency and encapsulation efficiency than water-based systems.
F64 (chitosan nanoemulsion) displayed strong colloidal stability and effective release behavior.
No mortality or feeding issues were observed in tested stingless bees.
Greenhouse tests showed effective lesion control comparable to metal-based treatments.

Llanos et al. (2026) studied this question.

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