Assessment of volatile profile as potential marker of chilling injury of basil leaves during postharvest storage
Abstract
The volatile profile of three sweet basil cultivars, "Italico a foglia larga", "Cammeo" and "Italiano classico", packagedin air at 4 or 12 °C until 9 days, was monitored by solid phase microextraction with GC-MS. Chilling injury (CI) scoreand electrolyte leakage were also assessed. In total, 71 volatile organic compounds (VOCs) were identified in the headspaceof basil samples. A preliminary principal component analysis highlighted the dominant effect of the cultivar onVOCs profiles. Data analysis by post-transformation of projection to latent structures regression (ptPLS2) clarified therole played by time and temperature of storage. Temperature influenced the emission of volatiles during storage, withmuch lower total volatile emissions at 4 °C compared to 12 °C. Finally, a ptPLS2 regression model performed on VOCsand the two CI parameters allowed selection of 10 metabolites inversely correlated to both CI parameters, which can beconsidered potential markers of CI in basil leaves.
Autore Pugliese
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R. Cozzolino; B. Pace; M. Cefola; A. Martignetti; M. Stocchero; F. Fratianni; F. Nazzaro; B. De Giulio
Titolo volume/Rivista
Food chemistry
Anno di pubblicazione
2016
ISSN
0308-8146
ISBN
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Codici ASJC
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