Harvest year effects on Apulian EVOOs evaluated by 1H NMR based metabolomics

Nine hundred extra virgin olive oils (EVOO) were extracted from individual olive trees of four olive cultivars (Coratina, Cima di Mola, Ogliarola, Peranzana), originating from the provinces of Bari and Foggia (Apulia region, Southern Italy) and collected during two consecutive harvesting seasons (20...

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Bibliographic Details
Published in:PeerJ (San Francisco, CA) CA), 2016-12, Vol.4, p.e2740-e2740
Main Authors: Girelli, Chiara R, Laura Del Coco, Papadia, Paride, De Pascali, Sandra A, Fanizzi, Francesco P
Format: Article
Language:English
Subjects:
Agricultural Science
Cluster difference
Cultivars
Data analysis
Extra-virgin olive oil (EVOO)
Fatty acids
Food Science and Technology
Harvest
Harvest year effect
Harvesting
Humidity
Metabolomics
Multivariate analysis
NMR
Nuclear magnetic resonance
Nuclear Magnetic Resonance (NMR)
Olive oil
Rain
Rainfall
Seasons
Single-cultivar
Software
Statistics
Summer
Trees
Triacilglycerols (TAG)
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Summary:Nine hundred extra virgin olive oils (EVOO) were extracted from individual olive trees of four olive cultivars (Coratina, Cima di Mola, Ogliarola, Peranzana), originating from the provinces of Bari and Foggia (Apulia region, Southern Italy) and collected during two consecutive harvesting seasons (2013/14 and 2014/15). Following genetic identification of individual olive trees, a detailed Apulian EVOO NMR database was built using 900 oils samples obtained from 900 cultivar certified single trees. A study on the olive oil lipid profile was carried out by statistical multivariate analysis (Principal Component Analysis, PCA, Partial Least-Squares Discriminant Analysis, PLS-DA, Orthogonal Partial Least-Squares Discriminant Analysis, OPLS-DA). Influence of cultivar and weather conditions, such as the summer rainfall, on the oil metabolic profile have been evaluated. Mahalanobis distances and J2 criterion have been measured to assess the quality of resulting scores clusters for each cultivar in the two harvesting campaigns. The four studied cultivars showed non homogeneous behavior. Notwithstanding the geographical spread and the wide number of samples, Coratina showed a consistent behavior of its metabolic profile in the two considered harvests. Among the other three Peranzana showed the second more consistent behavior, while Cima di Mola and Ogliarola having the biggest change over the two years.
ISSN:2167-8359
2167-8359
DOI:10.7717/peerj.2740