Authenticity and geographic origin of global honeys determined using carbon isotope ratios and trace elements

Xiaoteng Zhou, Mark Patrick Taylor, Helen Salouros, Shiva Prasad

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Honey is the world’s third most adulterated food. The addition of cane sugar or corn syrup and the mislabelling of geographic origin are common fraudulent practices in honey markets. This study examined 100 honey samples from Australia (mainland and Tasmania) along with 18 other countries covering Africa, Asia, Europe, North America and Oceania. Carbon isotopic analyses of honey and protein showed that 27% of commercial honey samples tested were of questionable authenticity. The remaining 69 authentic samples were subject to trace element analysis for geographic determination. One-way ANOVA analysis showed a statistical difference (p < 0.05) in trace element concentrations of honey from Australian regions and different continents. Principal component analysis (PCA) and canonical discriminant analysis (CDA) coupled with C5.0 classification modelling of honey carbon isotopes and trace element concentrations showed distinct clusters according to their geographic origin. The C5.0 model revealed trace elements Sr, P, Mn and K can be used to differentiate honey according to its geographic origin. The findings show the common and prevalent issues of honey authenticity and the mislabelling of its geographic origin can be identified using a combination of stable carbon isotopes and trace element concentrations.

LanguageEnglish
Article number14639
Pages1-11
Number of pages11
JournalScientific Reports
Volume8
DOIs
Publication statusPublished - 2 Oct 2018

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Carbon Isotopes
Honey
Trace Elements
Oceania
Tasmania
Canes
Discriminant Analysis
North America
Principal Component Analysis
Zea mays
Analysis of Variance
Carbon
Food

Bibliographical note

Copyright the Author(s) 2018. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Cite this

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title = "Authenticity and geographic origin of global honeys determined using carbon isotope ratios and trace elements",
abstract = "Honey is the world’s third most adulterated food. The addition of cane sugar or corn syrup and the mislabelling of geographic origin are common fraudulent practices in honey markets. This study examined 100 honey samples from Australia (mainland and Tasmania) along with 18 other countries covering Africa, Asia, Europe, North America and Oceania. Carbon isotopic analyses of honey and protein showed that 27{\%} of commercial honey samples tested were of questionable authenticity. The remaining 69 authentic samples were subject to trace element analysis for geographic determination. One-way ANOVA analysis showed a statistical difference (p < 0.05) in trace element concentrations of honey from Australian regions and different continents. Principal component analysis (PCA) and canonical discriminant analysis (CDA) coupled with C5.0 classification modelling of honey carbon isotopes and trace element concentrations showed distinct clusters according to their geographic origin. The C5.0 model revealed trace elements Sr, P, Mn and K can be used to differentiate honey according to its geographic origin. The findings show the common and prevalent issues of honey authenticity and the mislabelling of its geographic origin can be identified using a combination of stable carbon isotopes and trace element concentrations.",
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Authenticity and geographic origin of global honeys determined using carbon isotope ratios and trace elements. / Zhou, Xiaoteng; Taylor, Mark Patrick; Salouros, Helen; Prasad, Shiva.

In: Scientific Reports, Vol. 8, 14639, 02.10.2018, p. 1-11.

Research output: Contribution to journalArticleResearchpeer-review

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