In this study honey samples produced by Melipona (Michmelia)
seminigra merrillae, collected in seven counties distributed in the central and
southern region of Amazonas state in Brazil, were analysed for their botanical
origin, content and profile of phenolic compounds, and antioxidant and
antimicrobial activities.
Twenty-two pollen types were identified. The total phenolic
content ranged from 17 to 66mgGAE/g of extract; the highest contents were found
in honeys produced from pollen types such as Clidemia and Myrcia. The
antioxidant activity was higher in the samples that contained higher quantities
of phenolic compounds. In relation to the antibacterial activity, samples CAD3,
CAD4 and SAD3 presented the best results. Fourteen phenolic compounds were
determined. Among them, we identified the flavonoid taxifolin, which has not
previously been described in honeys from stingless bees, and we report the
identification of catechol in Brazilian honey samples for the first time.
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