RT info:eu-repo/semantics/article
T1 Carvacrol encapsulation in chitosan–carboxymethylcellulose–alginate nanocarriers for postharvest tomato protection
A1 Sánchez Hernández, Eva
A1 Santiago Aliste, Alberto
A1 Correa Guimaraes, Adriana
A1 Martín Gil, Jesús
A1 Gavara Clemente, Rafael José
A1 Martín Ramos, Pablo
K1 Nanotechnology
K1 Nanoparticles
K1 Nanoparticulas
K1 Polymers
K1 Polymerization
K1 Polimeros y polimerización
K1 Spectroscopy
K1 X-ray spectroscopy
K1 Infrared spectroscopy
K1 Espectroscopia de infrarrojos
K1 Transmission electron microscopy
K1 Microscopy
K1 Nanoencapsulation
K1 Microencapsulación
K1 Fungicides
K1 Fruit - Postharvest diseases and injuries
K1 Frutas - Enfermedades y plagas
K1 Sustainable agriculture
K1 Agricultura sostenible
K1 2206.10 Polímeros
K1 2209.21 Espectroscopia
K1 2301.20 Espectroscopia de Rayos X
K1 2301.12 Microscopia
K1 3102 Ingeniería Agrícola
K1 3101.05 Fungicidas
AB 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.
PB MDPI
SN 1422-0067
YR 2024
FD 2024
LK https://uvadoc.uva.es/handle/10324/67293
UL https://uvadoc.uva.es/handle/10324/67293
LA eng
NO International Journal of Molecular Sciences, 2024, Vol. 25, Nª. 2, 1104
NO Producción Científica
DS UVaDOC
RD 24-nov-2024