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- 저자 : Sibel Silici (검색결과 2 건)
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Antioxidant activities of honeybee products and their mixtures
Duran Özkök,Sibel Silici 한국식품과학회 2017 Food Science and Biotechnology Vol.26 No.1
In this study, the total phenolic content (TPC), antioxidant activity, and free radical scavenging activities (FRSA) of 70 samples comprising honeybee products (honey, pollen, royal jelly, and propolis) and their mixtures were determined. The TPC was determined in accordance with the Folin–Ciocalteu method, antioxidant activity with phosphomolybdenum, and FRSA with the 1,1- diphenyl-2-picryl hydrazyl (DPPH) assays. Honeybee propolis showed the greatest TPC, antioxidant activity, and FRSA followed by pollen, honey, and royal jelly, respectively. A positive correlation was observed between TPC and antioxidant activity of honey, pollen and mixed samples (respectively, r=0.91, r=0.93 and r=0.92) (p<0.01). Similarly, honey and mixed samples exhibited positive correlations with TPC and FRSA (respectively, r=0.98 and r=0.92) (p<0.01). It was concluded that honeybee products and their mixtures have antioxidant activity and FRSA and these effects may be attributed to their phenolic content.
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Antifungal Activity of the Honeybee Products Against Candida spp. and Trichosporon spp.
Ayşe Nedret Koç,Sibel Silici,Filiz Kasap,Hatice Tuna Hörmet-Öz,Hikmet Mavus-Buldu,Barış Derya Ercal 한국식품영양과학회 2011 Journal of medicinal food Vol.14 No.1
Honeybee products (honey, royal jelly, pollen, and propolis) were evaluated for their ability to inhibit the growth of 40 yeast strains of Candida albicans, Candida glabrata, Candida krusei, and Trichosporon spp. The broth microdilution method was used to assess the antifungal activity of honeybee products against yeasts. Fluconazole was selected as the antifungal control agent. Using the broth microdilution method, minimal inhibitory concentration ranges with regard to all isolates were 5–80% (vol/vol), 0.06–1μg/mL, 0.002–0.25μg/mL, 0.006–0.1μg/mL, and 0.02–96μg/mL for honey, royal jelly, pollen, propolis, and fluconazole, respectively. The antifungal activities of each product decreased in the following order: propolis >pollen>royal jelly>>honey. This study demonstrated that honeybee products, particularly propolis and pollen, can help to control some fluconazole-resistant fungal strains.
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