Metabolic changes of Malvasia grapes for wine production during postharvest drying

Journal of Agricultural and Food Chemistry
Vincenzo CostantiniFabio Mencarelli

Abstract

Malvasia (Vitis vinifera L.) grapes were harvested at 17.8% of soluble solids content (SSC) and placed inside an innovative dehydration room where temperature, relative humidity, and air flow were maintained, respectively, at 15 degrees C, 40%, and 1-1.5 m s(-1). Weight loss of bunches reached approximately 33% in 29 days. SSC increased inversely proportionally with the weight decrease, reaching at the end of experiment 23%. Abscisic acid (ABA) increased rapidly from around 29 to 80 microg g(-1) of dry weight at 11.7% of bunch weight loss and then declined gradually. Lipoxygenase (LOX) showed the same behavior as ABA, whereas alcohol dehydrogenase (ADH), read in the way of ethanol oxidation, increased continuously when the weight loss reached approximately 19.5%. In parallel with the activity of LOX, C6 compound [hexanal, hex-1-enol, (E)-hex-2-enal] concentrations reached a peak at 11.7% of weight loss, whereas ethanol and acetaldehyde increased with the increase of ADH and successively decrease and ethyl acetate increased. Proline increased initially as ABA and successively with the increase of ADH, 5.3-fold increase versus 4.2-fold increase of proteins. Postharvest dehydration of Malvasia grapes shows a biphasic pattern: a fi...Continue Reading

Citations

Jun 19, 2012·Journal of Agricultural and Food Chemistry·Ana MarquezJulieta Merida
Nov 18, 2008·Journal of Experimental Botany·Anita ZamboniMario Pezzotti
May 21, 2013·Plant Science : an International Journal of Experimental Plant Biology·Massimiliano CorsoClaudio Bonghi
Dec 20, 2014·Journal of the Science of Food and Agriculture·Roberto BeghiRiccardo Guidetti
Jan 11, 2011·Journal of the Science of Food and Agriculture·Luca RolleSusana Río Segade
Feb 28, 2015·Food Chemistry·Marilinda LorenziniBarbara Simonato
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Feb 2, 2017·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Joanna M GambettaDavid W Jeffery
Jul 27, 2018·Journal of the Science of Food and Agriculture·Simone GiacosaLuca Rolle
Jan 26, 2018·Journal of the Science of Food and Agriculture·Fabio Mencarelli, Andrea Bellincontro
Jan 9, 2019·Frontiers in Plant Science·Susana Río SegadeLuca Rolle
May 8, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Davide SlaghenaufiMaurizio Ugliano
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Jun 5, 2010·Journal of Agricultural and Food Chemistry·Fabio MencarelliDanilo Corradini
Jun 3, 2021·Metabolites·Chiara SanmartinAndrea Bellincontro

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