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Öğe Antimicrobial Activity of Six Pomegranate (Punica granatum L.) Varieties and Their Relation to Some of Their Pomological and Phytonutrient Characteristics(Mdpi, 2009) Duman, Ahmet D.; Ozgen, Mustafa; Dayisoylu, Kenan S.; Erbil, Nurcan; Durgac, CoskunArils from six pomegranate (Punica granatum L.) varieties grown in the Mediterranean region of Turkey were tested for their antimicrobial properties by the agar diffusion and minimum inhibitory concentration (MIC) methods against seven bacteria: (Bacillus megaterium DSM 32, Pseudomonas aeruginosa DSM 9027, Staphylococcus aureus Cowan 1, Corynebacterium xerosis UC 9165, Escherichia coli DM, Enterococcus faecalis A10, Micrococcus luteus LA 2971), and three fungi (Kluvyeromyces marxianus A230, Rhodotorula rubra MC12, Candida albicans ATCC 1023). It has been observed that the pomegranate aril extracts had antimicrobial effect on all microorganisms, giving inhibition zones ranging in size from 13 to 26 mm. The MIC values for active pomegranate extracts ranged between 30 and >90 mu g/mL. The results obtained appeared to confirm the antimicrobial potential of the Punica granatum varieties.Öğe Antimicrobial, Antioxidant, and Antimutagenic Activities of Five Turkish Pear Cultivars(Springer, 2018) Erbil, Nurcan; Murathan, Zehra Tugba; Arslan, Mehmet; Ilcim, Ahmet; Sayin, BilgeThe 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 mu mol TE/g FW and 161.25 mu mol 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 mu L/plate, exhibited antimutagenic activities, only the lowest dose (10 mu L/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.Öğe Bektaşi Üzümü (Ribes uva-crispa L.) ve Dağ Frenk Üzümünün (Ribes alpinum L.) Bazı Biyokimyasal İçerik ve Biyolojik Aktiviteleri Yönünden Karşılaştırılması(2021) Erbil, Nurcan; Murathan, Zehra Tuğba; Arslan, Mehmet; İlçim, AhmetRibes L. cinsine ait bitkiler çoğu zaman doğal olarak yetişen, son zamanlarda da kültürü yapılan çalı formundaki bitkilerdir. Bu cinse ait olan bektaşi üzümü ve frenk üzümünün sağlık açısından çeşitli faydalara sahip olduğu bilinmekte olup, bu faydalarından dolayı son yıllarda insanoğlunun dikkatini cezbetmiş durumdadır. Bu çalışmada Beşikdüzü/Trabzon’dan toplanmış olan bektaşi üzümü (Ribes uva-crispa L.) ve dağ frenk üzümünün (Ribes alpinum L.) toplam askorbik asit, toplam fenolik ve toplam flavonoid içerikleri ile antioksidan, antibakteriyel ve mutajen aktivileri araştırılmıştır. Elde edilen sonuçlar neticesinde, bektaşi üzümü ve dağ frenk üzümünün sahip olduğu toplam fenolik, flavonoid ve askorbik asit değerleri arasında istatistiksel olarak bir fark gözlenmemiştir (p>0.05). Antioksidan aktivite değerlerinin ise dağ frenk üzümünde daha yüksek olduğu belirlenmiştir. Antibakteriyel aktivite sonuçları incelendiğinde de benzer bir şekilde dağ frenk üzümü ekstraktının test bakterilerine karşı daha yüksek aktivite sergilediği tespit edilmiştir. Ayrıca; bektaşi üzümü ve dağ frenk üzümü ekstraktlarının hiçbirinde Salmonella typhimurium TA 98 ve TA 100’e karşı herhangi bir mutajen aktiviteye rastlanmamıştır.Öğe Some Biological Effects of the Fruits and Leaves of Different Apple Cultivars, Including Red-Fleshed Apples, Grown in a Microclimatic Region of Turkey: Part I(Springer, 2020) Erbil, Nurcan; Arslan, Mehmet; Murathan, Zehra Tugba; Ilcim, Ahmet; Borekci, Bilge SayinApple is a fruit that is frequently consumed in daily diet and is very useful for human health. In this study, seven apple cultivars grown in Posof district in Ardahan province, including red-fleshed 'Ici Kirmizi' and 'Japon apples' were investigated. 'Japon apple' was found to have the highest values of total phenolic and ascorbic acid contents. The highest content of chlorophyll a (1.14 mu g/g) was measured in 'Mahara apple', while the highest contents of chlorophyll b and total carotenoids (1.22 and 0.70 mu g/g, respectively) were also observed in 'Japon apple'. All the fruits and leaves of the apple cultivars, used in this study exhibited differential antioxidant and antibacterial effects. Except for 'Seker apple', all methanolic leaf extracts exhibited inhibitory effects onSaccharomyces cerevisiae. In addition, the strongest antimicrobial activities were observed in 'Japon apple'. While none of the doses of aqueous fruit extracts showed antimutagenic activities, different doses of the methanolic leaf extracts of the samples exhibited antimutagenic effects.Öğe Some Biological Effects of the Fruits and Leaves of Different Apple Cultivars, Including Red-Fleshed Apples, Grown in a Microclimatic Region of Turkey: Part I (vol 62, pg 399, 2020)(Springer, 2021) Erbil, Nurcan; Arslan, Mehmet; Murathan, Zehra Tugba; Ilcim, Ahmet; Sayin Borekci, Bilge[Abstract Not Available]
