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  • Title: Characterization of Portuguese honey from Castelo Branco region according to their pollen spectrum, physicochemical characteristics and mineral contents.
    Author: Silva LR, Sousa A, Taveira M.
    Journal: J Food Sci Technol; 2017 Jul; 54(8):2551-2561. PubMed ID: 28740313.
    Abstract:
    The aim of this work was to evaluate the quality of 16 honey samples from Castelo Branco region (Portugal). Twelve are monofloral from Calluna vulgaris, Erica, Lavandula, Echium and Campanula. The mean values obtained for physicochemical parameters were: 3.82 pH; 16.80% moisture; 81.6°Brix; 0.21% ash; 357.6 μS cm-1 electrical conductivity; 33.7 meq/kg free acidity; 5.7 meq/kg lactonic acidity; 39.3 meq/kg total acidity; 9.11 mg/kg HMF; 21.3 IN invertase and 9.0° Gothe for diastase activities. The results indicate a good quality, adequate processing, good maturity and freshness of honey. Additionally, the determination of mineral contents revealed that the K was the major element. Mean values obtained were (mg/kg): Ca, 28.36; K, 701.87; Mg, 74.00; Na, 31.04; Fe, 097; Cu, 0.65; Zn, 1.23; Mn, 2.78 and P, 48.80. Among the overall determined parameters, CB2 stands out by its high values in minerals, pH, moisture, ash, electrical conductivity and enzyme activity.
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