Sürdürülebilir Kalkınma Amaçları
Yayınlar
- MakaleAçık Erişim2023The Antioxidant Capacities and Antimicrobial Activities of Some Salvia L. Seeds
Ökkeş; Yılmaz, Okkes; Yilmaz; Kurşat, Murat; Kirbag, Sevda; Civelek, Şemsettin; Emre, Irfan; Sönmez, Pınar Erecevıt; Emre, Mustafa Yunus
The goal of present study is to find the penolic contents, antioxidant activities and antimicrobial capacities in the seeds of five Salvia L. taxa two of which are endemics (Salvia euphratica var. leiocalycina and Salvia euphratica var. euphratica). The flavonoid and phenolic acid are determined by using HPLC while the antioxidant activities are determined based on different methods. Also, the antimicrobial activities of some Salvia species are determined by using the well agar method. The current study found that the studied Salvia species have low flavonoid. It has been found that Salvia euphratica var. euphratica has high vanillic acid, ferulic acid and rosmarinic acid among the studied taxa. Similarly, it has been found that Salvia euphratica var. euphratica has high DPPH and ABTS radical scavening capacity in all concentrations. It has been also found that Salvia euphratica var. euphratica has highest total phenolic content (372,63±0,87 µgGAE/mg) whilst Salvia tricholoda has low total phenolic content (46,41±1,71 µgGAE/mg). In addition, this study demonstrated that Salvia tricholoda has lowest metal chelating activity (37,35±0,51%). Furthermore, present study found that the lipid peroxidation levels of the studied Salvia taxa are between 18,21±0,37 mg/kg and 21,03±0,22 mg/kg while it has been found that the antibacterial properties of the Salvia taxa under study are altering.
AtıfOpenAlex1TR Dizin1
İncele - MakaleAçık Erişim2021Nhibitory Property of Poly (AN-co-VP) Copolymer on Some Dermatophyte Fungiand Yeasts Causing Fungal Infections
Torgut, Gulben; Kirbag, Sevda; Sönmez, Pınar Erecevıt; Pıhtılı, Güzin
Antimicrobial susceptibility test for poly (AN-co-VP) copolymer, which we think could be an ideal drug in treatment interventions was evaluated with disk diffusion method and minimum inhibitor concentration. In the antimicrobial measurement data, it was determined that the poly (AN-co-VP) copolymer dissolved in pure water is a significant inhibitory property against the growth of yeast (on Candida spp. with 11.33±0.3 mm barrier area) and dermatophyte fungi (on Epidermophyton sp. and Trichophyton sp.with 12.33±0.3 mm barrier area) (p<0.001) and no inhibitory properties were observed in preventing the growth of all bacteria (Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Staphylococcus aureus, Bacillus megaterium). MIC limit values that prevent the growth of dermatophytes and yeasts supporting the disc diffusion method are 50-100 μL. This study is an alternative approach in order to limit the spread of superficial fungal infections they cause and eliminate these infections that tend to become chronic since this polymer extract has no inhibitory properties on bacteria but prevents the growth of yeast and dermatophytes.
AtıfOpenAlex1İncele - MakaleYalnız künye2021İnsanlarda Ciddi Hastalıklara Neden Olan Bakteri, Maya ve Dermatofit Mantarları Üzerinde Poly (DMAA-co-MMA) 'nin İnhibe Edici Etkisi
Kirbag, Sevda; Sönmez, Pınar Erecevıt; Pıhtılı, Güzin
Bu çalışmada insanlarda ciddi hastalıklara neden olan bakteri, maya ve dermatofit mantarları gibi mikroorganizmalar üzerindeki poli dimetilakrilamid-ko-metilmetakrilat’ın poli P (DMAA-co-MMA) diklorometan içeren çözeltilerinin inhibitör etkilerini araştırıldı. Disk difüzyon yöntemi ile incelenen bu çözelti, Bacillus megaterium ve Klebsiella pneumoniae dışındaki tüm bakterilerin (Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus) ve dermatofit mantarlarının çoğalmasını engelleyerek antimikrobiyal özelliğe sahiptir. Antimikrobiyal duyarlılık verilerinde, diklorometan içinde çözünen poli P (DMAA-ko-MMA) maya ve dermatofit mantarlarının büyümesine karşı inhibe edici bir etkiye sahiptir (Candida spp. üzerinde 11.3mm / inhibisyon alanı - 12.3 mm / inhibisyon alanı) ve Epidermophyton sp. üzerinde 11.3 mm / inhibisyon alanı - Trichophyton sp. üzerinde 11.3 mm / inhibisyon alanı) (P <0.001). Disk difüzyon yöntemini güçlendiren MIC (Minimal inhibisyon konsantrasyonu) sınır değerleri bakteriler, mayalar, dermatofitlerin büyümesini engelleyen en küçük değer olarak 50-100 μL'dir (10 mL de 4500- 9000 μg). Antimikrobiyal bileşik, gelecek bu alandaki çalışmaları aydınlatmak için büyük avantaj sağlayabilir. Çalışmada kullanılan polimer, iltihaplanma ve mantar enfeksiyonlarına neden olan mikroorganizmalar ile savaşan antimikrobiyal polimerlere umut verici yeni bir katkı sağlayacaktır.
- MakaleAçık Erişim2021The antioxidant and antimicrobial capacities of phenolic profiles of some Salvia L. Seeds grown in Turkey
Emre, Irfan; Kursat, Murat; Kirbag, Sevda; Erecevit, Pinar; Emre, Mustafa Yunus; Yilmaz, Okkes; Civelek, Semsettin
The aim of current study is to show phenolics, antioxidant capacities and antimicrobial activities of seeds of five Salvia L. (S. frigida Boiss., S. candidissima subsp. candidissima Vahl., S. virgata Jacq., S. verticillata L. var. verticillata and S. russellii Benth.) taxa grown in Turkey. The flavonoid and phenolic acid contents were measured by using HPLC whilst the antioxidant capacities were determined by using different methods. In addition, agar well diffusion method was used to determine the antimicrobial activities of Salvia species in this study. It was found that S. frigida, S. verticillata var. verticillata and S. russellii have the highest catechin contents and S. frigida and S. verticillata var. verticillata have high rosmarinic acid while S. frigida, S. candidissima subsp. candidissima and S. verticillata var. verticillata have high vanilic acid. Also, it was determined that S. frigida and S. verticillata var. verticillata have high DPPH radical scavenging activities in 150 and 250 µL while S. frigida and S. verticillata var. verticillata have highest ABTS radical scavenging activity in all concentrations apart from 25 µL for S. frigida. Furthermore, S. frigida and S. verticillata var. verticillata have high total phenolic contents. On the other hand, Salvia species have similar lipid peroxidation inhibitions. However, the metal chelating activities of Salvia species are different. And also, it was demonstrated that Salvia taxa have antimicrobial activity.
AtıfScopus7OpenAlex7TR Dizin2
İncele - MakaleAçık Erişim2020Description of the Protective Feature of Oregano Essential Oil Sold as a Commercial Site on Rainbow Trout
Kirbag, Sevda; Kuzgun, Nermin Karaton
The essential oil extracted from plants has a shelf-life effect. This study was carried out to determine the difference of natural oregano essential oil, which is considered to be a potential food additive, from commercially available, and its effects on rainbow trout containment by using low amounts of this essential oil. The changes in rainbow trout samples were analyzed by applying commercially available oregano essential oil at a low rate (RT1: 1% and RT2: 2%), by looking at the following parameters. When the microbial load, sensory properties, pH, TVB, TBA numbers are examined in terms of thyme essential oil application and day relationship, the limit to be consumed in samples with 1% oregano essential oil is (RT1), on average, between the 3rd and the 6th days. It is between the 3rd and 9th days in the samples applied with 2% oregano essential oil (RT2). According to the microbial load results, the rainbow trout sample (RT: control) exceeded the consumable limit on day 6 th and showed the highest value (P <0.05). In addition, it has been proven with the TVB and TBA values that the samples applied with essential oil are of good quality. In a sense, the shelf life is stabilized thanks to the oregano essential oil. The preservative effect was greater as soon as the oregano essential oil concentration was greate.
AtıfOpenAlex5TR Dizin3İncele - MakaleAçık Erişim2014Scopus SJRQ4Antimicrobial Activity of the Methanol Extracts and Essential Oil with the Composition of Endemic Origanum acutidens (Lamiaceae)
Gulec, Azime Kucukgul; Erecevit, Pinar; Yuce, Ebru; Arslan, Ali; Bagci, Eyup; Kirbag, Sevda
The chemical composition of hydro distilled essential oil from Origanum acutidens (Hand. and Mazz.) Ietswaart was collected from Tunceli (Turkey) were analyzed by GC and GC-MS. Essential oil and methanol extract of Origanum acutidens were tested against Yersinia ruckeri (ATCC 29473), Aeromonas hydrophila (ATCC 607920), Lactococcus garviae (ATCC 43921) Staphylococcus aureus (ATCC 29213) fish pathogenic bacterial strains. The analysis of the essential oil of Origanum acutidens showed the presence of 6 components accounting for 93.8 % of the total amount. Calvacrol (61.8 %), p-cymene (15.5 %) and thymol (12.7 %) that possessed antimicrobial activity were found as the major component. The final concentrations of the methanol extract and the essential oil were determined by using disk diffusion assay. Mean inhibition zones of bacterial strains for Origanum acutidens essential oil varied from 28.0 +/- 1.2 and 36.7 +/- 0.7 mm. The inhibition zones of methanol extract (10 mu L and 20 mu L) of Origanum acutidens against bacterial strains were in the range 8.7 +/- 0.7 - 11.0 +/- 0.6 mm and 12.7 +/- 0.67 - 22.7 +/- 1.3 mm, respectively. Our results suggest that both the methanol extract and the essential oil of Origanum acutidens may be valuable as potential antibacterial agents against the major fish pathogens.
AtıfWoS7OpenAlex12
İncele - MakaleAçık Erişim2013Scopus SJRQ3ANTIMICROBIAL ACTIVITIES OF SOME EUPHORBIA SPECIES
Kirbag, Sevda; Erecevit, Pinar; Zengin, Fikriye; Guvenc, Ayse Nilay
In this study, the antimicrobial activities of methanolic extracts and latex of some Euphorbia species used for medical purposes in Turkey were investigated. The extracts of Euphorbia aleppica L., Euphorbia szovitsii Fisch.&Mey. var. harputensis Aznav. ex M. S. Khan, Euphorbia falcata L. sub. falcata var. falcata, Euphorbia denticulata Lam., Euphorbia macroclada Boiss., Euphorbia cheiradenia Boiss.&Hohen, Euphorbia virgata Waldst.&Kit., Euphorbia petiolata Banks&Sol. were prepared with methanol. The antimicrobial activities of these extracts were examined on test microorganisms as follows: Staphylococcus aureus COWAN 1, Bacillus megaterium DSM 32, Proteus vulgaris FMC 1, Klebsiella pneumonia FMC 5, Escherichia coli ATCC 25922, Pseudomonas aeruginosa DSM 50071, Candida albicans FMC 17, Candida glabrata ATCC 66032, Epidermophyton sp. and Trichophyton sp. by the disc diffusion methods and well agar method. The MIC values of extracts were determined according to the broth microdulitions method. Results indicated that extracts of Euphorbia species inhibited the growth of tested microorganisms in the different ratio. Also, the MIC values of extracts were determined as 31,2-1000 mu g.
AtıfWoS29OpenAlex30
İncele - MakaleAçık Erişim2013Scopus SJRQ3Determination of phytochemical characteristics of the extract of Zea mays with Saccharomyces boulardii
Erecevit, Pinar; Kirbag, Sevda; Yilmaz, Okkes
Fatty acid, vitamin, phytosterol, flavonoid, and resveratrol contents and antimicrobial activities of Zea mays L. (corn) extracts treated with Saccharomyces boulardii were determined and compared. The total fatty acid, vitamin, and phytosterol contents in corn extract were at certain levels. It was detected that total fatty acid levels and vitamin contents of corn extracts prepared with Saccharomyces boulardii increased; however, flavonoid contents decreased at different rates. In addition to this, it was observed that naringin, resveratrol, and myricetin flavonoids were present in the extracts that contained S. boulardii. In the study, it was noticed that Z. mays L. (corn) had antioxidant and antimicrobial activities at different rates. It was observed that S. boulardii developing in extracts obtained from plants affected bioactive compounds at different rates.
AtıfWoS3OpenAlex4İncele