Total phenolic contents and antioxidant activities of Korean domestic honey from different floral sources

Abstract

Total phenolic contents and antioxidant activities of 7 Korean domestic honey varieties and fractions from different floral sources were determined. Extracts of 7 varieties of honey were fractionated in the sequence of nhexane, chloroform, ethyl acetate, n-butanol, and water. The ethyl acetate fraction (EAF) of all 7 honey varieties retained the majority of the antioxidant activity and the total phenolic content. The antioxidant activities of the EAF from Korean raisin honey were 52.74 and 24.44 mg of vitamin C equivalents/g of dry fraction based on ABTS and DPPH radicals, respectively. Total EAF phenolic contents of 7 honey varieties ranged from 5.27 to 29.17 mg of gallic acid equivalents/g of dry fraction. High correlation coefficients between total phenolic contents and antioxidant activities indicated that phenolic compounds were the major components responsible for the antioxidant activities of honey.

Chemometric approach to the analysis of antioxidant properties and colour of typical Italian monofloral honeys

“…Analysis of the antioxidant activity and colour of the honey samples gives results in agreement with the literature reports (Persano Oddo et al ., ; Wilczyńska, ; Baek et al ., ; Can et al ., ; Petretto et al ., ) and shows that these proprieties vary with the botanical origin of honeys. In general, Strawberry Tree honeys show the highest values in all the tests, especially in the DPPH assay, despite their colour is not so dark (see Table ); however, it can be noted that these honeys have a very bitter taste that can be attributed to the presence of large amount of polyphenols (Drewnowski & Gomez‐Carneros, ).…”

Influence of origins and bee species on physicochemical, antioxidant properties and botanical discrimination of stingless bee honey

“…[15] The antioxidant activity of honeys has been reported to have a correlation with phenolics, flavonoids, products of the Maillard reaction, ascorbic acid, organic acids, enzymes, carotenoids, amino acids, proteins and mineral content. [16][17][18] Honey has often been reported to have potential antioxidant activity, which is beneficial for human health. [19] Antioxidant activity is generally attributed to the ability of antioxidant compounds to donate electrons, scavenge free radicals, and chelate transition metal ions.…”

Total Polyphenol, Flavonoid Contents and Antioxidant Activities of Dolsan Leaf Mustard Pickle during Storage

“…However, resulting antioxidant activities and extract yields of plant materials depend on the extraction solvent, due to different chemical characteristics and polarities that may or may not be soluble in a particular solvent. Polar solvents, such as aqueous mixtures containing ethanol, methanol, acetone, and ethyl acetate, have been used frequently to extract phenolics from a plant matrixes [5]. In the present study, methanol extract was the most suitable solvent for extracting phenolic compounds from DLMP.…”

“…Enzymatic ROS scavenging includes superoxide dismutase (SOD), ascorbate peroxidase (APX), and glutathione peroxidase (GPX) activities. In contrast, non-enzymatic ROS scavenging includes cellular redox buffers, ascorbate and glutathione (GSH), tocopherol, flavonoids, and carotenoids [5]. The potential antioxidant activity of food and medicinal plants is associated with phenolic contents, type, and structure [6].…”