Physicochemical composition and antioxidant potential of bee pollen from different botanical sources in Alagoas, Brazil

摘要

ABSTRACT Bee pollen results from the mixture of pollen and floral nectar with the salivary substances of bees and has increasingly been used as a food with therapeutic properties. In this study, 30 samples of bee pollen from Apis mellifera apiaries in three mesoregions of Alagoas (Brazil) - Mata Atl???￠ntica, South Coast and Caatinga, were collected during the dry season of 2008/09 and analysed. Mata Atl???￠ntica and Caatinga had good production of bee pollen. In the same season, Mata Atl???￠ntica contained a higher diversity of pollen types for feeding bees with a predominance of herbaceous pollen (63%), whereas the Caatinga samples contained monofloral pollen. Physicochemical data were analysed with the nonparametric Kruskal-Wallis statistical test. The Caatinga samples were analysed to determine their contents of total phenolic compounds (25.85 ???± 10.80 mg gallic acid eq/g) and flavonoids (45.62 ???± 32.19 mg quercetin eq/g) and their antioxidant activity (for instance, 70.62 ???± 4.50% in the DPPH test), which were possibly affected by the environmental conditions of this biome. Index terms:???? Apis mellifera; total phenolics; floral origin.