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- Can, Zehra(9)
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Yayınlar
- MakaleYalnız künye2018Scopus SJRQ3Determination of in-vitro antioxidant, anti-urease, anti-hyaluronidase activities by phenolic rich bee products from different region of Turkey
Can, Zehra
In this study, enzyme inhibition of urease and hyaluronidase are clinically important functions were examined by different authenticity bee products. Different floral honey, pollen and propolis samples were analyzed in terms of total phenolic compounds (TPC), total flavonoid contents (TFC), ferric reducing antioxidant capacity (FRAP), cupric reducing antioxidant capacity (CUPRAC), and 2,2-diphenyl-1-picryhydrazyl (DPPH) free radical scavenging activities as antioxidant determinants. For the determination of the phenolic composition of the products, RP-UV-HPLC was used. TPC of the honey, pollen and propolis samples were ranged from 17 to 95 and 770 to 989 mg of gallic acid (GAE)/100g, 135-258 mg of GAE/g, and TFC was 1 to 10 mgQE/100g, and 78 to 99 mgQE/100 g, and 9 to 10 mg of QE/g, respectively. Among the bee products, propolis samples were showed the highest phenolic componds, that contained different quantity of protocatequic acid, catechin, caffeic acid, p-coumaric acid, p-hydroxybenzoic acid, ferulic acid and rutin. The urease inhibition vales (IC50) were changed from 7.02 to 33.25 mg/mL, 5.00 to 8.78 and 0.16 to 1.98 mg/mL in the honey, pollen and propolis samples, respectively. The hyaluronidase inhibition values (IC50) were changed from 0.02 to 0.46 g/mL, 0.02 to 0.26 g/mL and 3.26 to 9.21 μg/mL in the honey, pollen and propolis samples, respectively. Honey, pollen and propolis have a significant inhibition on the enzymes, the inhibition may be due to secondary metabolites of phenolic compounds and the mechanism of the inhibition should be studied in detailed.
AtıfScopus8
İncele - MakaleYalnız künye2016Scopus SJRQ3PHYTOCHEMICAL PROFILES OF WILD GROWN BLACKBERRY AND MULBERRY IN TURKEY
Akin, Meleksen; Eyduran, Sadiye Peral; Ercisli, Sezai; Yilmaz, Ilker; Cakir, Ozlem
Blackberry and mulberry are main berry crops grown in Black Sea region mostly in humid shade forest areas and its important for local people's diet and also important for the maintenance of their health and prevention of disease. Present study aimed to determine the content of vitamin C, organic acids (citric acid, tartaric acid, oxalic acid, malic acid, succinic acid, fumaric acid), sugars (glucose and fructose) and phenolic compounds (catechin, rutin, quercetin, chlorogenic acid, ferulic acid, o-coumaric acid, p-coumaric acid, caffeic acid, syringic acid, vanillic acid, and gallic acid), as well as antioxidant capacity (Trolox Equivalent Antioxidant Capacity, TEAC assay) in the wild grown blackberry and mulberry fruit. Among phenolic acids, chlorogenic acid was the predominant for all wild grown blackberries, white and black mulberries. The presence of oxalic acid was only detected in the wild blackberry genotype. As a result, the phytochemical recognition of the wild grown blackberry, black and white mulberries might contribute to forthcoming investigations for developing the efficiency of food industry.
AtıfWoS8
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