Geographical origin and botanical type honey authentication through elemental metabolomics via chemometrics

Spiros A Drivelos; Georgios P Danezis; Michał Halagarda; Stanisław Popek; Constantinos A Georgiou

doi:10.1016/j.foodchem.2020.127936

Geographical origin and botanical type honey authentication through elemental metabolomics via chemometrics

Food Chem. 2021 Feb 15:338:127936. doi: 10.1016/j.foodchem.2020.127936. Epub 2020 Aug 25.

Authors

Spiros A Drivelos¹, Georgios P Danezis², Michał Halagarda³, Stanisław Popek³, Constantinos A Georgiou⁴

Affiliations

¹ Chemistry Laboratory, Department of Food Science and Human Nutrition, Agricultural University of Athens, 75 Iera Odos, 118 55 Athens, Greece.
² Chemistry Laboratory, Department of Food Science and Human Nutrition, Agricultural University of Athens, 75 Iera Odos, 118 55 Athens, Greece; FoodOmics.GR Research Infrastructure, Greece.
³ Department of Food Product Quality, Cracow University of Economics, ul. Sienkiewicza 5, 30-033 Krakow, Poland.
⁴ Chemistry Laboratory, Department of Food Science and Human Nutrition, Agricultural University of Athens, 75 Iera Odos, 118 55 Athens, Greece; FoodOmics.GR Research Infrastructure, Greece. Electronic address: http://www.aua.gr/georgiou.

PMID: 32932081
DOI: 10.1016/j.foodchem.2020.127936

Abstract

The trace and rare earth elements content of 93 honeys of different botanical type and origin have been studied through ICP-MS. Discriminant Analysis (DA) was successful for botanical type and geographical origin classification while Cluster Analysis (CA) was successful only for botanical type. Through Probabilistic Neural Network (PNN) analysis, 85.3% were correctly classified by the network according to their geographical origin and 73.3% according to their organic characterization. A Partial Least Squares (PLS) model was constructed, giving a prediction accuracy of more than 95%. Information obtained using Rare Earths (Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) and trace elements (Li, Mg, Mn, Ni, Co, Cu, Sr, Ba, Pb) via chemometric evaluation facilitated classification of honey samples.

Keywords: Authenticity; Botanical type; Chemometrics; Elemental metabolomics; Geographical origin; Honey; Rare earth elements.

MeSH terms

Cheminformatics*
Cluster Analysis
Discriminant Analysis
Fraud / prevention & control
Geography*
Honey / analysis*
Least-Squares Analysis
Metabolomics*
Metals, Rare Earth / analysis
Neural Networks, Computer
Spectrum Analysis
Trace Elements / analysis

Substances

Metals, Rare Earth
Trace Elements