Abstract

Grey mould diseases caused by Botrytis cinerea are one of the main factorsreducing table grapes postharvest quality. The effect of high CO2 concentrations onsome fruit biochemical parameters in the presence of a high disease pressure wasevaluated. Bunches of 'Italia' table grapes were artificially infected by spraying witha conidial suspension of B. cinerea, packed in polyamide/polyethylene bags in threedifferent initial modified atmosphere (MA) conditions and stored at 3°C for 18 days.Changes in phenolic compounds in both skin and flesh, glucose and fructose content,polygalacturonase (PG) activity, and the incidence of grey mould rots wereevaluated every 6 days during storage. The results showed that high CO2concentrations did not significantly affect PG activity which, on the contrary, wasfound higher in Botrytis-infected samples than in corresponding non-inoculatedsamples. Moreover, in artificially infected samples, a positive correlation betweenhigh CO2 levels associated to the lowest disease incidence and the high concentrationof caftaric acid (the most representative phenolic compound) in the skin, was found.Therefore, it can be assumed that high CO2 concentrations could contribute tomaintain high levels of phenolic compounds in the table grapes' skin, which, in turn,might be involved in counteracting the disease development.

Autore Pugliese

• Di Venere Donato , Sergio Lucrezia , Pieralice Maria , Linsalata Vito

Tutti gli autori

• M.A. Gatto; L. Sergio; M. Pieralice; V. Linsalata; N.A. Cascarano; D. Di Venere

Titolo volume/Rivista

Non Disponibile

Anno di pubblicazione

2015

ISSN

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ISBN

978-94-62610-62-0

Numero di citazioni Wos

Nessuna citazione

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

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