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Título
Carvacrol encapsulation in chitosan–carboxymethylcellulose–alginate nanocarriers for postharvest tomato protection
Autor
Año del Documento
2024
Editorial
MDPI
Descripción
Producción Científica
Documento Fuente
International Journal of Molecular Sciences, 2024, Vol. 25, Nª. 2, 1104
Resumo
Advancements in polymer science and nanotechnology hold significant potential for addressing the increasing demands of food security, by enhancing the shelf life, barrier properties, and nutritional quality of harvested fruits and vegetables. In this context, biopolymer-based delivery systems present themselves as a promising strategy for encapsulating bioactive compounds, improving their absorption, stability, and functionality. This study provides an exploration of the synthesis, characterization, and postharvest protection applications of nanocarriers formed through the complexation of chitosan oligomers, carboxymethylcellulose, and alginate in a 2:2:1 molar ratio. This complexation process was facilitated by methacrylic anhydride and sodium tripolyphosphate as cross-linking agents. Characterization techniques employed include transmission electron microscopy, energy-dispersive X-ray spectroscopy, infrared spectroscopy, thermal analysis, and X-ray powder diffraction. The resulting hollow nanospheres, characterized by a monodisperse distribution and a mean diameter of 114 nm, exhibited efficient encapsulation of carvacrol, with a loading capacity of approximately 20%. Their suitability for phytopathogen control was assessed in vitro against three phytopathogens—Botrytis cinerea, Penicillium expansum, and Colletotrichum coccodes—revealing minimum inhibitory concentrations ranging from 23.3 to 31.3 μg·mL−1. This indicates a higher activity compared to non-encapsulated conventional fungicides. In ex situ tests for tomato (cv. ‘Daniela’) protection, higher doses (50–100 μg·mL−1, depending on the pathogen) were necessary to achieve high protection. Nevertheless, these doses remained practical for real-world applicability. The advantages of safety, coupled with the potential for a multi-target mode of action, further enhance the appeal of these nanocarriers.
Materias (normalizadas)
Nanotechnology
Nanoparticles
Nanoparticulas
Polymers
Polymerization
Polimeros y polimerización
Spectroscopy
X-ray spectroscopy
Infrared spectroscopy
Espectroscopia de infrarrojos
Transmission electron microscopy
Microscopy
Nanoencapsulation
Microencapsulación
Fungicides
Fruit - Postharvest diseases and injuries
Frutas - Enfermedades y plagas
Sustainable agriculture
Agricultura sostenible
Materias Unesco
2206.10 Polímeros
2209.21 Espectroscopia
2301.20 Espectroscopia de Rayos X
2301.12 Microscopia
3102 Ingeniería Agrícola
3101.05 Fungicidas
ISSN
1422-0067
Revisión por pares
SI
Patrocinador
Junta de Castilla y León y Fondo Europeo de Desarrollo Regional (FEDER) - (project VA148P23)
Fundación General de la Universidad de Valladolid - (proyecto APLICADRON)
Unión Europea, Programa Horizon (HORIZON-CL6-2022-FARM2FORK-01) - (project ID 101084398)
Fundación General de la Universidad de Valladolid - (proyecto APLICADRON)
Unión Europea, Programa Horizon (HORIZON-CL6-2022-FARM2FORK-01) - (project ID 101084398)
Version del Editor
Propietario de los Derechos
© 2024 The authors
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
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