Application of Elicitors, as Conventional and Nano Forms, in Viticulture: Effects on Phenolic, Aromatic and Nitrogen Composition of Tempranillo Wines
Metadatos
Mostrar el registro completo del ítemAutor
Pérez Álvarez, Eva P.; Parra Torrejón, Belén; Ramírez Rodríguez, Gloria Belén; Delgado López, José ManuelEditorial
MDPI
Materia
Methyl jasmonate Nanoparticles Wine taste properties Foliar application Phenolic compounds Amino acids Aroma
Fecha
2022-09-13Referencia bibliográfica
Pérez-Álvarez, E.P... [et al.]. Application of Elicitors, as Conventional and Nano Forms, in Viticulture: Effects on Phenolic, Aromatic and Nitrogen Composition of Tempranillo Wines. Beverages 2022, 8, 56. [https://doi.org/10.3390/beverages8030056]
Patrocinador
Spanish Government RTI2018-096549-B-I00 RTI-2018-095794-A-C22Resumen
The phenolic, aromatic and nitrogen composition of a wine determines its organoleptic
profile and quality. Elicitors have been used as a tool to stimulate the plant’s defense systems, favoring
the synthesis of secondary metabolites. In this pioneering study, the elicitor methyl jasmonate in
conventional form (MeJ) and in nanoparticle form (ACP-MeJ), with a concentration ten times lower,
was applied in a Tempranillo vineyard over two seasons. The phenolic, nitrogen and volatile
composition and the sensory properties of the MeJ-based wines were determined. The results showed
that the effects of foliar applications of MeJ modify the wine composition. Thus, although the total
concentration of most of the groups of phenolic compounds was not altered, several compounds,
such as petunidin-3-glucoside, quercetin-3-glucoside, epigallocatechin and most of the stilbenes,
increased, in both years, in the treated wines. Amino acids were influenced differently in each of the
years studied, and volatile compounds generally did not improve in the treated wines. However, the
ACP-MeJ wines were the best rated by the tasters, highlighting their equilibrium on the taste and
their genuineness and odor quality. Therefore, foliar applications of ACP-MeJ can be considered a
useful tool to improve wine quality.