Physicochemical attributes and pollen spectrum of Portuguese heather honeys
1999
Andrade, P.B. | Amaral, M.T. | Isabel, P. | Carvalho, J.C.M.F. | Seabra, R.M. | Cunha, A.P. da
The qualities of selected honey samples of "Serra da Lousa" (Portugal) from three consecutive harvests (20 samples from each harvest) were evaluated by determining the pollen spectrum and physicochemical attributes. The following determinations were carried out: moisture, electrical conductivity, hydroxymethylfurfural, diastase activity, pH, acidity (free, lactone and total), formol number, reducing sugars, apparent sucrose, insoluble material and ash. The samples were found to meet all major national and international honey specifications. Honeys were considered to be monofloral whenever the dominant pollen was found to be over 45% of total pollen. From the 60 studied samples, 70% were monofloral honeys from Erica sp., 17% monofloral honeys from Ericaceae (Erica sp. and Calluna vulgaris (L.) Hull) and 13% multifloral honeys with a high percentage of Erica sp.
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