“…Several volatile compounds such as geranylacetone, mequinol, and eugenol were isolated from the spine grape from V. davidii, that have not been reported for other Vitis species, while (E,E)-2,4-hexadienal, which is not produced by V. vinifera, was also found in the spine grape in a wide concentration (Meng et al, 2013). Despite this differentiating attribute reported by these authors, the (E,E)-2,4-hexadienal has been found in grape berries from different V. vinifera grapevine varieties, such as Airén, Cabernet Sauvignon, Chardonnay, Kyoto, Macabeo, Sauvignon Vert and Tempranillo Blanco (García, Chacón, Martínez, & Izquierdo, 2003;González-Barreiro, Rial-Otero, Cancho-Grande, & Simal-Gándara, 2015;OuYang et al, 2015;Savoi et al, 2016;Martínez, Rubio-Bretón, Vicente, & García-Escudero, 2018;Wang et al, 2019). On the other hand, it was reported that C6 compounds were the predominant family of aromatic volatile compounds in most of the V. davidii spine grape clones, being trans-2-hexenal the most predominant (Meng et al, 2013).…”