Phenolic compounds, antioxidant capacity and physicochemical properties of Brazilian Apis mellifera honeys

Forty-nine honey samples from five monofloral (eucalyptus, mastic, wildflower, Japanese grape and quitoco) and six polyfloral honeys were analyzed for their physicochemical and antioxidant compounds. Levels of total phenolics and flavonoids as well as individual composition were analyzed by HPLC. Th...

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Bibliographic Details
Published in:Food science & technology 2018-05, Vol.91, p.85-94
Main Authors: Nascimento, Kelly Souza do, Gasparotto Sattler, José Augusto, Lauer Macedo, Luciene Fagundes, Serna González, Carol Viviana, Pereira de Melo, Illana Louise, da Silva Araújo, Elias, Granato, Daniel, Sattler, Aroni, de Almeida-Muradian, Lígia Bicudo
Format: Article
Language:English
Subjects:
Antioxidant capacity
Botanical origin
Brazil
Honey
Phenolics
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Summary:Forty-nine honey samples from five monofloral (eucalyptus, mastic, wildflower, Japanese grape and quitoco) and six polyfloral honeys were analyzed for their physicochemical and antioxidant compounds. Levels of total phenolics and flavonoids as well as individual composition were analyzed by HPLC. The oxygen radical absorption capacity (ORAC), the ferric reducing antioxidant power (FRAP), and the 2,2-diphenyl-1-picrylhydrazyl free radical assays (DPPH) were performed to determine antioxidant capacity. The highest antioxidant capacity was observed in eucalyptus and mastic honeys; gallic acid levels were greatest in both of them while p-coumaric acid was highest in Japanese grape honey. Physicochemical and antioxidant properties of honey were found to be dependent on its botanical origin. Linear discriminant analysis was able to differentiate 90% of honeys in terms of the seasons when they were collected and the main discriminant responses were p-coumaric acid, titratable acidity, diastase activity, and total flavonoids content. LDA correctly classified 96% of honeys according to their botanical origin. •Monofloral honey types presented different phenolic profiles.•Eucalyptus and Schinus terebinthifolius honeys had the highest antioxidant capacity.•Physicochemical and bioactive properties of honey are dependent on its botanical origin.•Honeys collected in the same season presented a great similarity in phenolic composition.•Multivariate Analyses (LDA) are useful tools to authenticate honeys.
ISSN:0023-6438
1096-1127
DOI:10.1016/j.lwt.2018.01.016