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Salento Honey (Apulia, South-East Italy): A Preliminary Characterization by 1 H-NMR Metabolomic Fingerprinting

Author

Listed:
  • Chiara Roberta Girelli

    (Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce-Monteroni, 73100 Lecce, Italy)

  • Roberta Schiavone

    (Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce-Monteroni, 73100 Lecce, Italy)

  • Sebastiano Vilella

    (Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce-Monteroni, 73100 Lecce, Italy)

  • Francesco Paolo Fanizzi

    (Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce-Monteroni, 73100 Lecce, Italy)

Abstract

Honey is a natural sweet substance produced by honeybees from the nectar of flowers, plant secretions or plant-sucking insect excretions. Sugars and water constitute the major components, other minor components characterize the organoleptic and nutritional properties. To date, Salento (Apulia region, Italy) honey production is considerably threatened due to the suggested use of neonicotinoids in order to control the insect-vectored bacterium Xylella fastidiosa (subsp. pauca ). Metabolomics based on Nuclear Magnetic Resonance (NMR) spectroscopy was used to describe, for the first time, the composition of honey samples from different Salento producers. Exploratory Principal Component Analysis (PCA) showed, among the observed clustering, a separation between light and dark honeys and a discrimination according to producers, both further analyzed by supervised multivariate analysis. According to the obtained data, although limited to small-scale emerging production, Salento honey shows at the molecular level, a range of specific characteristic features analogous to those exhibited by similar products originating elsewhere and appreciated by consumers. The impact on this production should therefore be carefully considered when suggesting extensive use of pesticides in the area.

Suggested Citation

  • Chiara Roberta Girelli & Roberta Schiavone & Sebastiano Vilella & Francesco Paolo Fanizzi, 2020. "Salento Honey (Apulia, South-East Italy): A Preliminary Characterization by 1 H-NMR Metabolomic Fingerprinting," Sustainability, MDPI, vol. 12(12), pages 1-20, June.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:12:p:5009-:d:373482
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    References listed on IDEAS

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    1. Kettaneh, Nouna & Berglund, Anders & Wold, Svante, 2005. "PCA and PLS with very large data sets," Computational Statistics & Data Analysis, Elsevier, vol. 48(1), pages 69-85, January.
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