RT journal article
T1 Impact of preharvest and postharvest treatment combinations on increase of stilbene content in grape
A1 Fernández-Marín, María Isabel
A1 F. Guerrero, Raúl
A1 Puertas, Belén
A1 García-Parrilla, María Carmen
A1 González Collado, Isidro
A1 Cantos-Villar, Emma
A2 Química Orgánica
K1 benzothiadiazole
K1 chitosan
K1 methyl jasmonate
K1 resveratrol
K1 piceatannol
K1 viniferins
K1 functional grape
K1 ultraviolet C light
AB Aims : Stilbene-enriched grape is an interesting new food product with numerous health-promoting properties, mainlydue to its high added-value compound content, notably resveratrol. The aim of this study was to evaluate the effectsof different elicitors, alone or in combination with ultraviolet C light (UVC) postharvest treatment, on stilbene concentration in grapes. Methods and results : Three preharvest treatments were tested, namely benzothiadiazole, (BTH), methyl jasmonate (MEJA) and chitosan (CHIT). After harvesting, these treatments were combined with UVC postharvest treatment. The stilbene extraction method was validated method. Moreover, and grape quality was evaluated. Of the preharvest treatments, only BTH significantly increased trans-resveratrol concentration in grape, but this appears to be linked to a ripening delay. When pre- and postharvest treatments were combined, only the MEJA-UVC combination was successful in reducing by three days the day of maximum induction of stilbenes (trans resveratrol and piceatannol).Conclusion: The MEJA-UVC combination reached similar grape trans-resveratrol contents than UVC alone, butadditionally the time to reach maximum trans-resveratrol after the UVC treatment was reduced by three days andtherefore grape quality was preserved. Significance and impact of the study: The achieved results provide a potential treatment combination that allows functional grapes to be obtained in a shorter period than with UVC light alone, making it more applicable.
PB Vigne et Vin Pulbications Internationals
YR 2013
FD 2013
LK http://hdl.handle.net/10498/20581
UL http://hdl.handle.net/10498/20581
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 12-nov-2026