University of Khartoum

Physicochemical characteristics and Antioxidant Ability of Bee Honey From Three Nectar Sources

Physicochemical characteristics and Antioxidant Ability of Bee Honey From Three Nectar Sources

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Title: Physicochemical characteristics and Antioxidant Ability of Bee Honey From Three Nectar Sources
Author: Ali, Aya Ali Abdalla
Abstract: The objectives of the current study were the estimation of the physicochemical characteristics and antioxidants capacity of three different honey types; namely, Sunt (Acacia nilotica), Sidir jabli (Ziziphus) and Sidir enab (Ziziphus vulgaris). Samples of the honey were analyzed for their main chemical components, physical properties, total poly-phenols and total flavonoids content. Anti-oxidants were estimated by using various assays including, total reducing power ability (TRPA), chelation of Fe+2 ions and hydrogen peroxide scavenging. These various antioxidant activities were compared to vitamin C standard antioxidants. The three types of honey contained significantly (P≤0.05) different amounts of moisture, ash, protein. Sunt honey had the highest value (29.85%) of moisture content, and Sidir enab honey had the lowest value (20.05%). Sunt honey had the highest value (0.80%) of ash content, while Sidir enab honey had the lowest value (0.05%). Sunt honey had the highest value (0.99%) of protein content, and Sidir jabli honey had the lowest value (0.59%). With regard to mineral content, sodium had the highest range 309.10 - 317.90 ppm and phosphorus had the lowest one 19.68 - 23.48 ppm. According to the levels of antioxidant groups, Sidir jabli honey contained the highest amount of total poly-phenols (285.10 mg/100g), and Sidir enab honey had the lowest amount (165.20 mg/100g). Sunt honey had the highest value of flavonoids (1.35 mg/100g), and Sidir enab honey had the lowest value (0.25mg/100g). Total sugars were in the range 85.92% to 70.31% where Sidir enab contained the highest and Sunt the lowest. Sidir jabli had the highest (60.38%) and Sidir enab had the lowest (55.40%) value of reducing sugars. Sunt honey showed the greatest TRPA, while Sidir jabli had the lowest. Sidir jabli honey had the greatest value of Chelation of Fe+2 ion at the highest concentration (1000) compared to other honey at different levels. Sidir enab honey had the greatest activity of scavenging of H2O2 to remove H2O2 from the reaction media in comparison to the other honey bee types.
URI: http://khartoumspace.uofk.edu/123456789/17004
Date: 2015-11-12


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