Next Article in Journal
Readily Available Chiral Benzimidazoles-Derived Guanidines as Organocatalysts in the Asymmetric α-Amination of 1,3-Dicarbonyl Compounds
Next Article in Special Issue
Chemical Constituents of Murraya tetramera Huang and Their Repellent Activity against Tribolium castaneum
Previous Article in Journal
Complete Chloroplast Genome Sequence and Phylogenetic Analysis of the Medicinal Plant Artemisia annua
Previous Article in Special Issue
Identification and Biological Evaluation of Secondary Metabolites from Marine Derived Fungi-Aspergillus sp. SCSIOW3, Cultivated in the Presence of Epigenetic Modifying Agents
 
 
Article

Portuguese Honeys from Different Geographical and Botanical Origins: A 4-Year Stability Study Regarding Quality Parameters and Antioxidant Activity

REQUIMTE, LAQV/Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
*
Authors to whom correspondence should be addressed.
Molecules 2017, 22(8), 1338; https://doi.org/10.3390/molecules22081338
Received: 18 July 2017 / Revised: 8 August 2017 / Accepted: 9 August 2017 / Published: 11 August 2017
(This article belongs to the Collection Bioactive Compounds)
Portuguese honeys (n = 15) from different botanical and geographical origins were analysed regarding their quality parameters (diastase activity, hydroxymethylfurfural content, moisture and pH), colour (L*, a*, b*) and antioxidant profile (total phenolics content, total flavonoids content, DPPH• scavenging activity, and ferric reducing power). The samples were analysed fresh and after 4-years of storage (at 25 °C and protected from light). The hydroxymethylfurfural content and diastase activity of the fresh samples were in accordance with the recommended values described in the legislation. In general, the antioxidant activity of the samples correlated more with the bioactive compounds content than with colour. The storage affected differently each individual sample, especially regarding the antioxidant profile. Nevertheless, although in general the lightness of the samples decreased (and the redness increased), after 4 years, 11 samples still presented acceptable diastase activity and hydroxymethylfurfural values. View Full-Text
Keywords: honey; botanical and geographical origins; colour; antioxidants; storage honey; botanical and geographical origins; colour; antioxidants; storage
Show Figures

Graphical abstract

MDPI and ACS Style

Soares, S.; Pinto, D.; Rodrigues, F.; Alves, R.C.; Oliveira, M.B.P.P. Portuguese Honeys from Different Geographical and Botanical Origins: A 4-Year Stability Study Regarding Quality Parameters and Antioxidant Activity. Molecules 2017, 22, 1338. https://doi.org/10.3390/molecules22081338

AMA Style

Soares S, Pinto D, Rodrigues F, Alves RC, Oliveira MBPP. Portuguese Honeys from Different Geographical and Botanical Origins: A 4-Year Stability Study Regarding Quality Parameters and Antioxidant Activity. Molecules. 2017; 22(8):1338. https://doi.org/10.3390/molecules22081338

Chicago/Turabian Style

Soares, Sonia, Diana Pinto, Francisca Rodrigues, Rita C. Alves, and M. Beatriz P.P. Oliveira. 2017. "Portuguese Honeys from Different Geographical and Botanical Origins: A 4-Year Stability Study Regarding Quality Parameters and Antioxidant Activity" Molecules 22, no. 8: 1338. https://doi.org/10.3390/molecules22081338

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop