Pollen diversity and volatile variability of honey from Corsican Anthyllis hermanniae L. habitat

International audienceMelissopalynological, physicochemical, and volatile analyses of 29 samples of Corsican _summer maquis_ honey were performed. The pollen spectrum was characterized by a wide diversity of nectariferous and/or polleniferous taxa. The most important were Anthyllis hermanniae and Rubus sp., associated with some endemic taxa. Castanea sativa was also determined in these honeys with a great variation. The volatile fraction was characterized by 37 compounds and dominated by phenolic aldehydes and linear acids. The major compounds were phenylacetaldehyde, benzaldehyde, and nonanoic acid. Statistical analysis of pollen and volatile data showed that 18 samples were characterized by a high abundance of phenylacetaldehyde, which might relate to the high amount of A. hermanniae and Rubus sp. Eleven other samples displayed a higher proportion of phenolic ketones and linear acids, which characterized the nectar contribution of C. sativa and Thymus herba-barona, respectively

Pollen diversity and volatile variability of Corsican blossom honey

International audienc

Melissopalynological and volatile analysis of Corsican ”automne maquis” honey from Arbutus unedo L. habitat

International audienc

Caractérisation des huiles essentielles de propolis et bourgeons de Populus nigra var. italica

International audienc

Essential oil compositions of propolis and Populus nigra var. italica buds from Corsica island

International audienc

Chemical compositions of essential oils from Corsican propolis and Populus nigra var. italica buds.

International audienc

Melissopalynological origin determination and volatile composition analysis of Corsican "Erica arborea spring maquis" honeys

International audienceMelissopalynology and volatiles' analysis are applied for origin identification of 45 Corsican ''spring maquis'' honeys, regionally representative of this Protected Denomination of Origin ''Miel de Corse-Mele di Corsica'' range. They are dominated by Erica arborea pollens. Studies of statistical distribution, biogeographical typology and altitudinal distribution of the 50 characteristic taxa certify the Corsican origin of these honeys. The volatile fraction extracted by headspace solid-phase microextraction (HS-SPME) from CorsicanE. arborea flowers was dominated by octen-3-ol, (E)-b-ocimene and (Z)-b-ocimene whereas 4-propylanisol, p-anisaldehyde, benzaldehyde and 3-furaldehyde were identified as the main volatile components of Corsican honeys. Taking into account the volatile fraction and melissopalynological and physicochemical data, cluster analysis and principal component analysis highlighted the correlation between the relative frequency of E. arborea pollens, the total peak areas of spring maquis honeys and the amounts of p-anisaldehyde and 4-propylanisol

Melissopalynological and volatile analysis of honeys from Corsican Erica arborea maquis

International audienc

Melissopalynological origin determination and volatilecomposition analysis of Corsican "chestnut grove" honeys

International audienceFifty Corsican ''chestnut grove'' honeys were certified by melissopalynological analysis. Castanea sativawas strongly overrepresented and was accompanied mainly by Rubus sp., Quercus ilex, Anthyllis hermanniae, Myrtus communis, Genista sp., Erica arborea, Cistus creticus, and Fraxinus ornus. Headspace solid-phase microextraction was performed to investigate the volatile composition of Corsican chestnut catkins and chestnut grove honeys. The main compounds of the chestnut catkins were acetophenone (21.5%), methyl salicylate (13.4%), nonanal (10.9%), and linalool (7.5%), whereas the major constituents of the honeys were 2-aminoacetophenone (11.4%), benzaldehyde (10.8%), acetophenone (7.0%), nonanoic acid (5.9%), octanoic acid (5.0%), and 3-furaldehyde (4.9%). By entering the aromatic intensity, the relative frequency of C. sativa, Rubus sp. and A. hermanniae pollens, and the physicochemical parameters as discriminate variables, principal component analysis (PCA) and cluster analysis (CA) showed that the distribution of Corsican ''chestnut grove'' honeys correlates with climatic events and/or honeybee foraging behaviours

Volatile components as chemical markers of botanical origins of honey bee from Guiana

International audienc