Determination of unifloral honey volatiles from Centaurea iberica and Zizyphus spina-christi by Solid-Phase Microextraction and Gas Chromatography-Mass Spectrometry
Date
2014-09-03
Authors
Odeh, I.
Abu-Lafi, S.
Al-Najjar, I.
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Abstract
The volatiles of two different unifloral Palestinian honeys from botanical species
Centaurea iberica and Zizyphus spina-christi have been investigated for the first time.
They were isolated, identified, and quantitatively analyzed using Headspace Solid-Phase
Microextraction and Gas Chromatography Mass Spectrometry (HS-SPME-GCMS) methodology.
The resulted total ion current (TIC) chromatographic profiles reflected the
uniqueness of each type of honey and therefore the proposed procedure can be used to
characterize each kind of honey by revealing the absence or presence of certain volatile
constituents.
A total of 18 compounds were seen in Centaurea iberica honey with phenylacetaldehyde,
phenylethylalcohol, 2-ethyl hexanoic acid, 2,4,6-trimethylphenol and nonanoic
acid as the principal components, whereas 25 compounds were seen in Zizyphus spinachristi
honey with benzaldehyde, phenylacetaldehyde, phenylethylalcohol, benzeneacetonitrile,
2-ethyl hexanoic acid, octanoic acid, 2-methoxy-4-(1-propanol)-6-acetate phenol,
nonanoic acid, decanoic acid, 1-hydroxy 2,4,6-trimethylbenzene, and 5-hydroxymethyl-
2-furaldehyde as the principal constituents.
Ziziphus spina-christi honey was found to have two unequivocal potential markers:
phenylacetonitrile and 5-hydroxymethyl-2-furancarboxaldehyde, while Centaurea Italica
honey has only one representative floral origin marker compound: the 2,4,6-trimethylphenol.
Description
Keywords
honey , volatiles , Centaurea iberica , Zizyphus spina-christi