Phenolic profile, antioxidant activity and palynological
analysis of stingless bee honey from Amazonas, Northern Brazil
Food Chem, 2013 Dec 15;141(4):3552-8
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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