Abstract

Table grapes (cv. Italia) were stored at 5 °C in air or in modified atmosphere with low O2 (1%) and low(0.03-10%) or high (> 20%) CO2. Volatile organic compounds (VOCs) associated with quality (respiration rate,acetaldehyde and ethanol, water status of rachis) and sensory parameters (visual quality, rachis browning,characteristic odour and flavour, off-odour and off-flavour) were evaluated. Low CO2 preserved the quality andsensory parameters, whereas high CO2 caused a fermentative metabolism. A total of 126 VOCs were identified byHS-SPME/GC-MS analysis. Principal component analysis (PCA) identified (Z)-2-hexenal and (E,Z)-2,4-hexadienalas potential marker of freshness; whereas, acetaldehyde, ethanol, 1-butanol, 3-methyl-1-butanol, 1-octanoland 1-nonanol were correlated to fermentation processes. Partial least-square regression analysis (PLSR)was used to identify (R2 =0.95) the main predictors of off-odour as ethanol and ethyl acetate (+) and hexanaland ?-linalool (-).

Autore Pugliese

• Logrieco Antonio Francesco , Pace Bernardo , Cefola Maria , Linsalata Vito

Tutti gli autori

• Cefola M.; Damascelli A.; Lippolis V.; Cervellieri S.; Linsalata V.; Logrieco A.F.; Pace B.

Titolo volume/Rivista

Postharvest biology and technology

Anno di pubblicazione

2017

ISSN

0925-5214

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

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Numero di citazioni Scopus

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Settori ERC

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Codici ASJC

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