Antimicrobial, Antioxidant, and Antimutagenic Activities of Five Turkish Pear Cultivars | Antimikrobielle, antioxidative und antimutagene Eigenschaften von fünf türkischen Birnensorten
2018
Erbil, Nurcan | Murathan, Zehra Tugba | Arslan, Mehmet | Ilcim, Ahmet | Sayin, Bilge
The pear (Pyrus spp.) is one of the most important fruits consumed in daily life. The aim of this study was to determine the total phenolic and ascorbic acid contents, as well as the antimicrobial, antioxidant, and antimutagenic activities, of various pear cultivars. The fruits of five pear (Pyrus communis L.) cultivars (‘Deveci’, ‘Kizil’, ‘Egirsah’, ‘Gugum’, and ‘Banda’) were used in this study. It was determined that the peel and pulp of the ‘Kizil’ pear had the highest total phenolic content (402.5 mg/100 g and 215.2 mg/100 g, respectively), while those of the ‘Banda’ pear had the lowest total phenolic content (326 mg/100 g and 126.1 mg/100 g, respectively). Additionally, the ‘Kizil’ pear showed the highest antioxidant capacity in the 2,2’-azino-bis(3-ethylbenzothiazoline-6-6-sulphonic acid) (ABTS) and ferric-reducing ability assay (FRAP) (1.72 μmol TE/g FW and 161.25 μmol Fe II/g FW, respectively) and the highest ascorbic acid content (16.02 mg/100 g). The ‘Banda’ pear showed the highest antibacterial activity against the test bacteria. However, none of the pear extracts displayed antifungal activity. While all doses of the ‘Kizil’, ‘Gugum’, and ‘Banda’ pear extracts used in this study, except 80 μL/plate, exhibited antimutagenic activities, only the lowest dose (10 μL/plate) of the ‘Deveci’ pear extract showed the antimutagenic activity against induced mutagenesis in the Salmonella typhimurium TA 98 strain. Consequently, the five Turkish pear cultivars used in this study exhibited different levels of antimicrobial, antioxidant, and antimutagenic activities.
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