Browsing by Author "Ercan, Leyla"

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Antioxidant and Antimicrobial Capacity of Quinic Acid
(Bitlis Eren Üniversitesi Fen Bilimleri Dergisi, 2022) Ercan, Leyla; Doğru, Mehmet
Recently, agents with natural antioxidant and antimicrobial properties have been popularly studied. For this purpose, phenolic compounds, terpenes, and organic acids are examined for their antioxidant and antimicrobial properties. Of these, organic acids are increasingly being used in pharmacology, medicine, food, and industry. Quinic acid is a natural organic compound found in many edible fruits and plants. In this study, the antioxidant effect of quinic acid, which has the structure of cyclohexane carboxylic acid, was determined in vitro using seven different methods (DPPH, ABTS, CUPRAC, DMPD, FRAP, Fe3+ reduction, and Total antioxidant method). In addition, its antimicrobial effect on fungi (C. albicans), gram-positive bacteria (S. aureus, S. pyogenes), and gram-negative bacteria (E. coli, K. pneumoniae, and P. aeruginosa) were determined by the disk diffusion method. As a result, it was found that quinic acid has broad-spectrum antimicrobial properties, but its antioxidant properties are too low to be highlighted. While its antimicrobial activity was quite good, especially on K. pneumoniae E. coli, S. aureus, S. Pyogenes, and P. aeruginosa, it did not show any effect on C. albicans. Although the antioxidant property of quinic acid is low, it showed more antioxidant properties in the DMPD method, which is one of these methods, because it dissolves very well in water.
Bioactive Profile, Anticarcinogenic, Antimicrobial, Antidiabetic Effects, and in Silico Pharmacokinetic Properties of Astragalus Elatus
(Academic Press inc Elsevier Science, 2025) Ercan, Leyla; Akan, Hasan; Caliskan, Cemile Gunbegi
Because of the numerous useful components they contain, plants are significant resources that are being explored for their varied purposes in industry, food, and medicine. Recently, particularly endemic species have gained attention with the identification of their different ingredients and characteristics and the exploration of their precious features. This research assessed the endemic species Astragalus elatus's bioactive components utilizing UHPLC-Orbitrap (R)-HRMS, its antibacterial qualities utilizing the disc diffusion method, its cytotoxic impact on cervical cancer utilizing the MTT method, and its apoptosis effect by annexin V methods. Additionally, Astragalus elatus's antidiabetic activity was revealed by in silico and in vitro examinations of its inhibitory effect on the enzymes alpha-Amylase and alpha-Glucosidase. Consequently, it was discovered that A. elatus can be utilized in the treatment of cervical cancer and has effective cytotoxic and apoptotic effects on HeLa cells. Additionally, it was detected that A. elatus possesses antibacterial and anti-diabetic properties. Compared to gram-negative bacteria, A. elatus had a greater inhibitory effect on gram-positive bacteria. The pharmacokinetically significant characteristics and their tendency for chemical reactions of this plant's primary phenolic compounds were identified by utilizing DFT, molecular docking, and ADME/T.
Citation - WoS: 4
Citation - Scopus: 3
Comparison of chemical and antimicrobial properties of different nanoparticles synthesized from Verbascum x calcicolum Hub.-Mor. Hybrid
(Elsevier, 2024) Ercan, Leyla; Günbegi Çalışkan, Cemile; Caliskan, Cemile Gunbegi; Kilic, Murat; 21.02. Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri Bölümü; 21. Vocational School of Health Services / Sağlık Hizmetleri Meslek Yüksekokulu; 01. Mardin Artuklu University / Mardin Artuklu Üniversitesi
Recent advances in nanoparticle synthesis have led to an increase in the use of environmentally acceptable plantderived nanoparticles, given their wide range of applications. Due to their stability and several advantageous characteristics, selenium nanoparticles also stand out in these investigations in addition to metallic nanoparticles like silver, gold, iron, and zinc. These nanoparticles' favorable qualities for human health, such as antioxidant and antibacterial activities, are being studied in addition to their chemical characteristics. This investigation aimed to produce zinc oxide nanoparticles (VcZnO) and selenium nanoparticles (VcSe) from hybrid Verbascum x calcicolum Hub.-Mor. And to examine their antioxidant and antimicrobial properties. Utilizing the disk diffusion method and well methods, its antibacterial capabilities were studied. In vitro antioxidant capabilities were also assessed utilizing the DPPH, FRAP, and CUPRAC techniques. As a result, it emerged that zinc oxide nanoparticles synthesized from hybrid Verbascum x calcicolum were effective on gram-positive bacteria and gram-negative bacteria such as Staphylococcus aureus (MIC = 160 mg/ml for VcZnO), Pseudomonas aeruginosa (MIC = 80 mg/ml for VcZnO), Klebsiella pneumoniae (MIC = 40 mg/ml for VcZnO and, MIC = 120 mg/ml for VcSe), Escherichia coli (MIC = 20 mg/ml for VcZnO). While selenium nanoparticles are more favorable in terms of antioxidant capabilities, zinc nanoparticles demonstrate stronger antibacterial properties than selenium nanoparticles. Thus, it has been discovered that the use of different nanoparticles of various plants can be more efficient in different applications. It has also been found that Verbascum x calcicolum is a material that can be used successfully in nanoparticle synthesis.
Cytotoxic Effect of Zinc Oxide and Selenium Nanoparticles Synthesized From Orobanche Picridis on Lung Cancer as Well as Their Antimicrobial and Antioxidant Properties
(Wiley, 2025) Ercan, Leyla; Caliskan, Cemile Gunbegi
Orobanche picridis represents a fascinating example of an obligate parasitic plant due to its lack of chlorophyll. It is of significant interest to botanists, ecologists, and biologists because of its complex parasitic lifestyle and specific host preferences. The purpose of this work was to generate zinc oxide (OrZnO) nanoparticles (NPs) and selenium (OrSe) nanoparticles from O. picridis and examine their characterization as well as their antibacterial, anticarcinogenic, and antioxidant characteristics. To this purpose, the produced NPs were characterized utilizing a scanning electron microscope, energy-dispersive X-ray spectroscopy, X-ray diffraction, and Fourier-transform infrared spectroscopy. The antimicrobial activity of OrZnO and OrSe NPs was assessed employing the disc diffusion and agar well diffusion methods, while in vitro antioxidant activity was assessed through three different assays: DPPH, FRAP, and ABTS. The MTT assay was utilized to ascertain the cytotoxicity of these nanoparticles against lung cancer, and acridine orange/ethidium bromide staining was carried out to analyze morphological and DNA alterations in these cells. Consequently, the synthesized OrZnO NPs exhibited stronger antibacterial capabilities than the OrSe NPs, while both demonstrated antioxidant properties. In addition to their potent cytotoxic action, both NPs induced apoptosis by altering the DNA and shape of the lung cancer (A549) cells.
Citation - WoS: 3
Determination of Antimicrobial Activity of Nasturtium Officinale and Its Content of Volatile Organic Compounds and Fatty Acids
(Kahramanmaras Sutcu Imam Univ Rektorlugu, 2022) Ercan, Leyla; Dogru, Mehmet
Due to the side effects of antibiotics used in the treatment of diseases caused by pathogenic bacteria, and antibiotic resistance that develops due to the misuse of antibiotics, scientists have turned to the search for alternative antimicrobial compounds. Plants and antimicrobial compounds in plants are widely researched because they are natural and have been a familiar resource in the field of complementary medicine for centuries. In this study, antimicrobial activities of the methanol and water extracts of Nasturtium officinale prepared at different concentrations were investigated on gram-positive bacteria, gram-negative bacteria, and fungi by the disc diffusion method. In addition, volatile organic compound and fatty acidcontent of the plant were determined. For this purpose, fatty acids were determined by converting them to methyl esters in GC-FID (gas chromatography flame ionization detector), volatile compounds were determined by SPME (Solid-phase microextraction) method in GC-MS (gas chromatography-mass spectrometry). In addition, the amounts of volatile components in different parts of the plant were shown comparatively within the scope of the research. According to the results obtained; it was revealed that Nasturtium officinale has an antimicrobial effect on Bacillus megaterium, Escherichia coli, Candida albicans, Pseudomonas aeruginosa, Bacillus Spizizenii, Klebsiella pneumoniae, Staphylococcus aureus bacteria. The plant showed a stronger antimicrobial effect, especially on P. aeruginosa, C. Albicans, and E. coli. It has also been determined that Nasturtium officinale has important essential fatty acids as well as many volatile components. In the analyzes made, it was determined that the main volatile component of Nasturtium officinale was alpha-Terpinolene.
Determination of Phenolic Compounds in Nasturtium Officinale by Lc-Ms / Ms Using Different Extraction Methods and Different Solvents
(2023) Ercan, Leyla; Doğru, Mehmet
This study aimed to determine the phenolic compound contents of Nasturtium officinale (N. officinale) extracts prepared with water, methanol, ethanol, and chloroform, as well as extracts prepared by evaporation and lyophilization, and parts of N. officinale by LC-MS/MS (Liquid Chromatography-Mass spectrometry/Mass spectrometry). The results obtained not only contribute to knowledge about the benefits of N. officinale but also show the effect of different solvents and different extraction methods on the determination of phenolic compounds. In addition to these results, the importance of the cold chain in the determination of some phenolic compounds has also been demonstrated. While it is observed that the number of phenolic components obtained from the extracts prepared with methanol and ethanol is high; It is observed that some phenolic compounds such as quinic acid, fumaric acid, aconitic acid, and p-coumaric acid dissolve very well in water and temperature is important.
Examination of the Inhibition Effect of Extracts of Berberis crataegina Fruit on Elastase, Xanthine Oxidase, Tyrosinase, and Calcium Oxalate Crystal
(2025) Ercan, Leyla
Çeşitli bitki ve bitki kısımlarının enzimler ve böbrek taşları üzerindeki etkisi üzerine araştırmalar yapılmaktadır. Kalsiyum oksalat kristali, idrar sistemine zarar veren böbrek taşlarının ana bileşenidir ve hem cerrahi operasyonlara hem de maddi sıkıntılara neden olabilir. Ayrıca bazı enzimlerin aşırı çalışması birçok sağlık sorununa yol açabilir. Örneğin ürik asit kristallerinin birikmesinden kaynaklanan hiperürisemi de dahil olmak üzere birçok hastalık, ksantin oksidaz enziminin aşırı aktivitesinden kaynaklanabilir. Ayrıca cilt yaşlanmasına karşı koruma sağlayan araştırma alanlarından biri de elastaz aktivitesinin azaltılmasıdır. Gıda ve kozmetik alanında da tirozinaz enzimini baskılayarak pigmentasyonun önlenmesine yönelik çalışmalar yürütülmektedir. Bu nedenle aşırı aktivitesi çeşitli rahatsızlıklara neden olan bu enzimlerin inhibitörü olarak kullanılabilecek bitkisel ilaçlar dikkat çekmektedir. Bu çalışmada Berberis crataegina'nın iki farklı meyve ekstresinin (metanol ve etanol) kalsiyum oksalat kristalleri ve ksantin oksidaz, elastaz ve tirozinaz enzimleri üzerindeki in vitro inhibisyon etkisi araştırıldı. Ayrıca monomerik antosiyaninlerin miktarı ve toplam fenolik ve flavonoid içerikleri de değerlendirildi. B. crataegina meyvesinin her iki ekstrenin de kalsiyum oksalat kristallerinin oluşumunu engellediği gözlendi. Bununla birlikte, etanol ekstresinin, ksantin oksidaz, elastaz ve tirozinaz enzimlerini inhibe etmede metanol ekstresinden daha iyi performans gösterdiği bulunmuştur. Tüm bu özellikleri nedeniyle B. crataegina meyvesi gıda, kozmetik ve sağlık uygulamalarında etkin bir şekilde kullanılabilecek doğal kaynaklardan biridir.
Citation - WoS: 2
Citation - Scopus: 2
Investigation of Antibacterial and Antifungal Efficacy of Zinc and Silver Nanoparticles Synthesized From Nasturtium Officinale
(Ankara Univ, Fac Agriculture, 2023) Ercan, Leyla
Nanoparticles are nano -sized materials that can be widely used in fields such as medicine, pharmacology, and industry. The use of natural and easily available materials in nanoparticle synthesis is preferable for economic reasons. Plants are extremely suitable for the synthesis of nanoparticles due to their wide availability and the large number of components they contain with various properties. For this purpose, silver nanoparticles and zinc nanoparticles (AgNPs and ZnNPs), two different nanoparticles were synthesized from an edible plant, watercress (Nasturtium officinale). Scanning electron microscopy, scanning electron microscopy -energy dispersive X-ray, UV-VIS spectroscopy, X-ray diffraction (XRD), and fourier transform infrared spectrophotometer (FTIR) analyses of these nanoparticles were performed. In addition, the antimicrobial effects of these synthesized nanoparticles were determined using the disk diffusion method. The nanoparticles obtained from Nasturtium officinale were effective on Gram-negative bacteria (Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa), Gram-positive bacteria (Staphylococcus aureus, Streptococcus pyogenes), and fungi (Candida albicans). In particular, AgNPs with broad-spectrum antimicrobial activity were obtained from the watercress. While ZnNPs showed inhibition effects of 49% on K. pneumoniae, 51% on S. aureus, and 62% on C. albicans, AgNPs showed inhibition effects of 93% on P. aeruginosa, 87% on S. aureus, 81% on E. coli, 80% on C. albicans, 72% on K. pneumoniae, and 56% on S. pyogenes. The results show that Nasturtium officinale can be used effectively in the production of new biotechnological products, particularly ones with antimicrobial properties.
Citation - WoS: 1
Citation - Scopus: 1
Phytochemical Profile, Antimicrobial, Antioxidant, Anti-Xanthine Oxidase, and Anti-Elastase Activities of Centaurea Hyalolepis: an in Silico and in Vitro Analysis
(Wiley-v C H verlag Gmbh, 2025) Ercan, Leyla; Günbegi Çalışkan, Cemile; Caliskan, Cemile Gunbegi; Akan, Hasan; 21.02. Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri Bölümü; 21. Vocational School of Health Services / Sağlık Hizmetleri Meslek Yüksekokulu; 01. Mardin Artuklu University / Mardin Artuklu Üniversitesi
This study aimed to examine the antibacterial, antioxidant, and enzyme activity of Centaurea hyalolepis, as well as the total phenolic and carotenoid contents, and volatile and phenolic components. Gas chromatography-mass spectrometry was used for the volatile component analysis of C. hyalolepis, while liquid chromatography-mass spectrometry was used for the phenolic component analysis. Furthermore, the antimicrobial activity was evaluated using disc diffusion and microdilution techniques. The antioxidant capacity was investigated in vitro using four distinct methods (2,2-diphenyl-1-picrylhydrazyl, 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid, cupric ion-reducing antioxidant capacity, and N,N-dimethyl-p-phenylene diamine). Additionally, both in vitro and in silico studies were carried out to determine the inhibitory effect on xanthine oxidase and elastase. Consequently, it was determined that C. hyalolepis has antioxidant properties and is a highly efficient antibacterial agent against Bacillus megaterium, Pseudomonas aeruginosa, Bacillus subtilis subsp. spizizenii, Klebsiella pneumoniae, Escherichia coli, Staphylococcus aureus, Klebsiella aerogenes, and Candida albicans. Additionally, C. hyalolepis contains many volatile compounds, such as 2-methyl propanoic acid, 3,5-octadien-2-one, 2,6-dimethyl cyclohexanol, hexanal, pentanal, anethole, and beta-cyclocitral. It also has a large number of phenolic components, including chlorogenic acid, apigenin 7-glucuronide, quinic acid, and 4-hydroxybenzoic acid. Moreover, C. hyalolepis was shown to inhibit xanthine oxidase and elastase.
Verbascum Kotschyi Boiss. & Hohen. Kullanılarak Sentezlenen Çinko Oksit ve Selenyum Oksit Nanopartiküllerinin Antioksidan ve Antimikrobiyal Özelliklerinin Karşılaştırılması
(Kahramanmaras Sutcu Imam Univ Rektorlugu, 2025) Kılıç, Fatma Mungan; Günbegi Çalışkan, Cemile; Ercan, Leyla; Mungan Kılıç, Fatma; Çalışkan, Cemile Günbeği; 21.02. Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri Bölümü; 16.03. Department of Medical and Aromatic Plants / Tıbbi ve Aromatik Bitkiler Bölümü; 16. School of Vocational Higher School of Kızıltepe/ Kızıltepe Meslek Yüksekokulu; 21. Vocational School of Health Services / Sağlık Hizmetleri Meslek Yüksekokulu; 01. Mardin Artuklu University / Mardin Artuklu Üniversitesi
Son yıllarda nanopartiküllerin birbirinden farklı alanlarda kullanımı araştırılmaktadır. Bu çalışmalar içinde özellikle yeşil sentez ile doğa dostu ve sağlığa faydalı nanopartiküllerin sentezi oldukça ilgi çekmektedir. Aynı zamanda bu çalışmalar ile değeri ve pek çok özelliği bilinmeyen çok sayıda bitki türünün önemi de açığa çıkarılmaktadır. Bu nedenle bu bitki türlerinden biri olan ve üzerinde nanopartikül çalışmaları yapılmayan bir tür olan Verbascum kotschyi’den çinko oksit ve selenium nanopartiküller sentezleyip bu nanopartiküllerin antimikrobiyal ve antioksidan özelliklerini belirlemek amaçlanmıştır. Verbascum kotschyi’den sentezlenen nanopartiküllerin SEM, EDX, FTIR analizleri yapıldıktan sonra üç farklı yöntemle (DPPH, CUPRAC ve FRAP) in vitro antioksidan kapasiteleri belirlenmiştir. Ayrıca disk difüzyon yöntemi ile gram-pozitif, gram-negatif bakteriler ve mantar üzerine antimikrobiyal etkisi belirlenmiştir. Sonuç olarak Verbascum kotschyi’den sentezlenen çinko oksit nanaopartiküller selenyum nanopartiküllere kıyasla daha fazla antimikrobiyal özellik sergilemiştir. Ancak selenyum nanaopartiküller çinko oksit nanaopartiküllerden daha etkin antioksidan özellik sergilemiştir. Böylece Verbascum kotschyi’nin nanopartikül sentezi ile oluşturulabilecek ürünleri sayesinde farklı alanlarda kullanılabilecek özelliklere sahip olduğu tespit edildi.