African Journal of Traditional, Complementary and Alternative Medicines
African Ethnomedicines Network
Vol. 12, No. 4, 2015, pp. 134-144
Bioline Code: tc15086
Full paper language: English
Document type: Research Article
Document available free of charge
African Journal of Traditional, Complementary and Alternative Medicines, Vol. 12, No. 4, 2015, pp. 134-144
© Copyright 2015 - African Journal of Traditional, Complementary and Alternative Medicines
PROLONGED HEATING OF HONEY INCREASES ITS ANTIOXIDANT POTENTIAL BUT DECREASES ITS ANTIMICROBIAL ACTIVITY|
Jahan, Nusrat; Islam, Md. Asiful; Alam, Fahmida; Gan, Siew Hua & Khalil, Md. Ibrahim
Background: Honey is renowned for its antioxidant, antimicrobial and medicinal properties. It is typically heated and filtered during processing
to avoid crystallization. However, few studies have reported its heating effect and the antioxidant and antimicrobial activities of honey.
Materials and Methods: In this study, honey samples were collected from eight different honey-producing sites in Bangladesh and heated to
50ºC, 70ºC and 90ºC for 12 hours, while the antioxidant potentials and antimicrobial properties of the heated samples were compared with those
of the unheated samples. Antimicrobial properties were investigated against one Gram-positive and eight Gram-negative bacteria. Other
physicochemical and biochemical properties were also determined.
Results: Interestingly, there was a proportionate increase in the amount of antioxidant compounds (phenolics and flavonoids) as well as
antioxidant potentials proportional with the amount of heat introduced, whereas the antimicrobial properties of the honey samples were reduced
with increasing heat.
Conclusion: In conclusion, though prolonged heat treatment of honey can increase its antioxidant potential, antimicrobial activities are
Honey; heat; antioxidant; antimicrobial
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