4.7 Article

Kaempferitrin: A Flavonoid Marker to Distinguish Camellia oleifera Honey

Journal

NUTRIENTS
Volume 15, Issue 2, Pages -

Publisher

MDPI
DOI: 10.3390/nu15020435

Keywords

C; oleifera honey; flavonoid; LC-MS; MS; kaempferitrin; marker

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This study used LC-MS/MS to compare the flavonoid types in C. oleifera honey and nine other monofloral honeys, and identified eight distinct flavonoids in C. oleifera honey. Two distinct flavonoids were found in both C. oleifera honey and nectar by comparing them with the common flavonoids. Furthermore, kaempferitrin was identified as the distinct flavonoid marker in C. oleifera honey using the PLS-DA model.
C. oleifera is an economically important oilseed crop and medical plant. However, as a characteristic honey resource, the standard protocol used to identify the composition of C. oleifera honey has not been established yet. Previously, distinctive flavonoid has been shown as an effective marker to trace the botanical origin of honey. In this study, we examined the flavonoid types in C. oleifera honey and nine other monofloral honeys by using liquid chromatography tandem-mass spectrometry (LC-MS/MS) and compared the differences and identified eight distinct flavonoids in C. oleifera honey. Then, comparing the 8 flavonoids with the 14 flavonoids common to C. oleifera honey and nectar, two distinct flavonoids were identified in C. oleifera honey and nectar. Finally, we identified kaempferitrin as the distinct flavonoid marker in C. oleifera honey using the degree of influence of the partial least-squares discriminant analysis (PLS-DA) model on C. oleifera honey and ployfloral honey.

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