Exploring New Horizons for Wine Grapes: Modulating Functional Effects by Varying Harvest Timing and Solar Exposure

Identifier:  imarina:9437338

Handle: https://hdl.handle.net/20.500.11797/imarina9437338

Authors:  Rico, Daniel; Schorn-Garcia, Daniel; Acena, Laura; Garcia-Casas, Maria Jesus; Busto, Olga; Boque, Ricard; Mestres, Montserrat; Martin-Diana, Ana Belen

Abstract:
Grenache (GN) and Cabernet Sauvignon (CS) are two traditional red grape varieties widely cultivated in the Mediterranean area and both late-ripening cultivars, which makes them less sensitive to global warming conditions and more stable to harvest timing. Although different studies have evaluated the final antioxidant properties of grapes and pomaces, few studies have explored the effect of sun exposure and harvest on the nutritional and antioxidant properties of these products. This study investigates the control of sunlight and ripening as tools to tailor nutritional and antioxidant properties of grape juices (GJ) and their byproducts (pomace GP). The compositional analysis showed no significant (p >= 0.05) differences associated to either harvesting timing or exposure to sunlight for either of the two studied varieties. However, differences (p