Impact of physicochemical parameters, pollen grains, and phenolic compounds on the correct geographical differentiation of fir honeys produced in Greece as assessed by multivariate analyses

Karabagias, Ioannis K.; Halatsi, Evangelia Z.; Karabournioti, Sofia; Kontakos, Stavros; Kontominas, Michael G.

doi:10.1080/10942912.2017.1300811

Cited by 7 publications

(7 citation statements)

References 29 publications

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“…The limited discriminatory power of pollenic data has been reported previously in the literature involving honeydew honeys . It should be noted that this is the first report in the literature regarding Thymus capitatus L. pollen grains as potential markers of the geographical origin of thyme honey.…”

Section: Resultssupporting

confidence: 90%

“…In the case of honey, melissopalynological analysis is the official method, for the botanical origin recognition. However, there is no unambiguous evidence that this method may be applied to the discrimination of the geographical origin of honey, with a high degree of confidence . This method requires high skilled analysts and does not ensure reliable identification if the honey investigated contains traces or no pollen .…”

Section: Introductionmentioning

confidence: 99%

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Volatile metabolites or pollen characteristics as regional markers of monofloral thyme honey?

Karabagias

2018

Separation Science Plus

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Thirty‐one monofloral thyme honeys were collected from professional beekeepers from four different regions in Greece during harvesting year 2012–2013. Aqueous solutions of honeys were subjected to headspace solid‐phase microextraction coupled to gas chromatography with mass spectrometry to record complete volatile pattern, whereas pollen screening was accomplished using the melissopalynological analysis. The primary objective was to investigate the volatile pattern and whether specific volatile metabolites or pollen grain percentages could serve as regional markers. Results showed that 37 volatile compounds, belonging to different classes, were identified and semi‐quantified, using the internal standard method. Application of multivariate analysis showed that ten volatile metabolites recorded significant variations (p<0.05) according to geographical origin of thyme honey. Linear discriminant analysis classified honeys according to geographical origin providing a classification rate of 92.3% using the cross validation method based on the statistically significant volatile metabolites. This was not the case for the overall correct classification rate based on pollen grain percentages which was only 51.6%. Volatile compounds analysis, apart from the specific information on the development of monofloral thyme honey aroma, proved to be a fast and more accurate tool for its discrimination according to production area, compared to melissopalynology.

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Section: Resultssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Volatile metabolites or pollen characteristics as regional markers of monofloral thyme honey?

Karabagias

2018

Separation Science Plus

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“…In the literature, however, there have been numerous studies focusing on the determination of physicochemical parameters [8,9], volatile compounds [10], polyphenols [11,12], minerals [2,13,14,15,16], free amino acids [17], organic acids [17], etc., for the recognition of honey geographical and botanical origin using either official or instrumental techniques in combination with chemometrics.…”

Section: Introductionmentioning

confidence: 99%

“…However, due to the press of the global market with products of low quality and of no specific origin, physico-chemical ‘’marker’’ analysis in combination with chemometrics may effectively assist in the determination of honey botanical and geographical origin and contribute to the establishment of health safety standards [8,9,15,19].…”

Section: Introductionmentioning

confidence: 99%

Two-Way Characterization of Beekeepers’ Honey According to Botanical Origin on the Basis of Mineral Content Analysis Using ICP-OES Implemented with Multiple Chemometric Tools

Louppis¹,

Karabagias

Papastephanou³

et al. 2019

Foods

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Asfaka, fir, flower, forest flowers and orange blossom honeys harvested in the wider area of Hellas by professional beekeepers, were subjected to mineral content analysis using inductively coupled plasma optical emission spectrometry (ICP-OES). The main purpose of this study was to characterize the mineral profile and content of toxic metals such as lead, cadmium and chromium, and investigate whether specific minerals could assist accurately in the botanical origin discrimination with implementation of chemometrics. Twenty-five minerals were identified (Ag, Al, As, B, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, Hg, Mg, Mn, Mo, Ni, Pb, Sb, Se, Si, Ti, Tl, V, Zn) and quantified. Results showed that the mineral content varied significantly (p < 0.05) according to honey botanical origin, whereas lead, cadmium, and chromium contents ranged between 0.05–0.33 mg kg−1, <0.05 mg kg−1, and in the range of <0.12 to 0.39 mg kg−1, respectively. Fir honeys from Aitoloakarnania region showed the highest mineral content (182.13 ± 71.34 mg kg−1), while flower honeys from Samos Island recorded the highest silicon content (16.08 ± 2.94 mg kg−1). Implementation of multivariate analysis of variance (MANOVA), factor analysis (FA), linear discriminant analysis (LDA), and stepwise discriminant analysis (SDA) led to the perfect classification (100%) of these honeys according to botanical origin with the use of Al, As, Ca, Mg, Mn, Ni, Pb, Sb, Si, Zn and total mineral content. However, the higher lead content in the majority of samples than the regulated upper limit (0.10 mg kg−1), sets the need for further improvements of the beekeepers’ practices/strategies for honey production.

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“…In addition, there have been many reports on using mineral element analysis to identify the origin of food and plants. [11][12][13][14][15] The mineral and trace elemental composition of crops reflects the cultivar and soil conditions where crops grows. [16,17] Stable isotope analysis has been used to trace the origin of cereal grains, such as rice, wheat, soybean and so on.…”

Section: Introductionmentioning

confidence: 99%

Geographical origin traceability of foxtail millet based on the combination of multi-element and chemical composition analysis

Liu¹,

Liang

Lu³

et al. 2018

International Journal of Food Properties

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Impact of physicochemical parameters, pollen grains, and phenolic compounds on the correct geographical differentiation of fir honeys produced in Greece as assessed by multivariate analyses

Cited by 7 publications

References 29 publications

Volatile metabolites or pollen characteristics as regional markers of monofloral thyme honey?

Volatile metabolites or pollen characteristics as regional markers of monofloral thyme honey?

Two-Way Characterization of Beekeepers’ Honey According to Botanical Origin on the Basis of Mineral Content Analysis Using ICP-OES Implemented with Multiple Chemometric Tools

Geographical origin traceability of foxtail millet based on the combination of multi-element and chemical composition analysis

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