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      Characterization of Ziziphus lotus (jujube) honey produced in Algeria

      1 , 2 , 2 , 2
      Journal of Apicultural Research
      Informa UK Limited

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          Methods of Melissopalynology

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            Identification and quantification of antioxidant components of honeys from various floral sources.

            Little is known about the individual components of honey that are responsible for its antioxidant activity. The present study was carried out to characterize the phenolics and other antioxidants present in honeys from seven floral sources. Chromatograms of the phenolic nonpolar fraction of the honeys indicated that most honeys have similar but quantitatively different phenolic profiles. Many of the flavonoids and phenolic acids identified have been previously described as potent antioxidants. A linear correlation between phenolic content and ORAC activity was demonstrated (R(2) = 0.963, p < 0.0001). Honeys were separated by solid-phase extraction into four fractions for sugar removal and separation based on solubility to identify the relative contribution of each fraction to the antioxidant activity of honey. Antioxidant analysis of the different honey fractions suggested that the water-soluble fraction contained most of the antioxidant components. Specific water-soluble antioxidant components were quantified, including protein; gluconic acid; ascorbic acid; hydroxymethylfuraldehyde; and the combined activities of the enzymes glucose oxidase, catalase and peroxidase. Of these components, a significant correlation could be established only between protein content and ORAC activity (R(2) = 0.674, p = 0.024). In general, the antioxidant capacity of honey appeared to be a result of the combined activity of a wide range of compounds including phenolics, peptides, organic acids, enzymes, Maillard reaction products, and possibly other minor components. The phenolic compounds contributed significantly to the antioxidant capacity of honey but were not solely responsible for it.
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              Evaluation of the phenolic content, antioxidant activity and colour of Slovenian honey

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                Author and article information

                Journal
                Journal of Apicultural Research
                Journal of Apicultural Research
                Informa UK Limited
                0021-8839
                2078-6913
                June 20 2017
                January 2018
                November 22 2017
                January 2018
                : 57
                : 1
                : 166-174
                Affiliations
                [1 ] Faculty of Sciences, Department of Biology, University Amar Telidji, Laghouat, Algeria
                [2 ] Faculty of Sciences, Department of Vegetal Biology and Soil Sciences, University of Vigo, Ourense, Spain
                Article
                10.1080/00218839.2017.1399663
                5e3edd97-2c86-452b-a307-b8500b2c4428
                © 2018
                History

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