Browsing by Author "Keskin, Cumali"
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3-hydroxy fatty acids from the flowers of Hypericum lysimachioides var. lysimachioides
Fatty acid methyl esters in the leaves and flowers of Hypericum lysimachioides var. lysimachioides (Guttiferae) were analyzed by gas chromatography and gas chromatography-mass spectrometry. The flowers of H. lysimachioides ... -
Adsorption performance of Bacillus licheniformis sp. bacteria isolated from the soil of the Tigris River on mercury in aqueous solutions
Baran, Mehmet Fırat; Yıldırım, Ayfer; Acay, Hilal; Keskin, Cumali; Aygün, Hüsamettin (Taylor and Francis Ltd., 2022)Mercury is known to be one of the most toxic heavy metals in the environment and is released into the water systems in significant quantities through natural events and industrial process activities. Many chemical materials ... -
Analysis of bioactive compounds using LC-ESI-MS/MS, cytotoxic, antimicrobial effects, and enzyme activities from Cyclotrichium origanifolium
Aktepe, Necmettin; Baran, Ayse; Atalar, Mehmet Nuri; Baran, Mehmet Firat; Keskin, Cumali; Taskin, Abdullah; Yavuz, Oemer (Wiley, 2023)Cyclotrichium origanifolium is a medicinal plant belonging to the Lamiaceae family. In this study, phenolic content analysis, antimicrobial effects, and cytotoxic effects of extracts of C. origanifolium were investigated. ... -
Astragalus diphtherites Fenzl var. diphtherites ve Astragalus gymnalocepias Rech ((Fabaceae) taksonlarının farklı polariteye sahip çözücüler ile hazırlanan özütlerinin antioksidan ve antimikrobiyal özelliklerinin araştırılması
Keskin, Cumali (2017)Bu çalışmada Astragalus diphtherites Fenzl var. diphtherites ve Astragalus gymnalocepias Rech (Fabaceae) taksonlarının gövde ve kök kısımlarından elde edilen hekzan, etil asetat, aseton ve metanol özütlerinin total fenolik, ... -
Astragalus diphtherites FENZL var. diphtherites ve astragalus gymnalopecias RECH. FIL’in gövde ve kök kısımlarından farklı çözücüler ile elde edilen özütlerin invitro antioksidan ve antimikrobiyal özelliklerinin belirlenmesi
Keskin, Cumali; Özen, Hasan Çetin; Toker, Zuhal; Kızıl, Göksel; Kızıl, Murat (Kahramanmaraş Sütçü İmam Üniversitesi, 2018)Bu çalışmanın amacı farkı polariteye sahip çözücü serilerinden geçiren Astragalus diphtherites var. diphtherites (A. diphtherites) ve Astragalus gymnalopecias (A. gymnalopecias) türlerinin gövde ve kök kısımlarının ... -
Bazı hypericum türlerinin total yağ asidi miktarı ve yağ asidi bileşenleri
Keskin, Cumali (2016)Bazı Hypericum Türlerinin Total Yağ Miktarları ve Yağ asidi Bileşenleri Bu çalışmada Hypericum hyssopifolium (Chaix) var microcalycinum (Boiss & Heldr), Hypericum ret us um Aucher, Hypericum scabroides (Robson & Poulter), ... -
Biosynthesis, characterization, and investigation of antimicrobial and cytotoxic activities of silver nanoparticles using Solanum tuberosum peel aqueous extract
Xu, Jiajun; Yıldıztekin, Mahmut; Han, Dayong; Keskin, Cumali; Baran, Ayşe; Baran, Mehmet Fırat; Ava, Canan Aytuğ; Kandemir, Sevgi İrtegün (Elsevier Ltd., 2023)Metallic nanoparticle biosynthesis is thought to offer opportunities for a wide range of biological uses. The green process of turning biological waste into utilizable products gaining attention due to its economical and ... -
Composition of essential oil of Carthamus glaucus Bieb. subsp glaucus
Toker, Zuhal; Keskin, Cumali (Asian Journal Of Chemistry, 2008)The essential oil of water distilled aerial parts of Carthamus glaucus Bieb. subsp. glaucus (Compositae) was analyzed by GC/MS. 23 Components were characterized representing 87.3% of total component in oil sample. The major ... -
Determination of chemical composition and antioxidant, cytotoxic, antimicrobial, and enzyme inhibition activities of Rumex acetosella L. plant extract
Kandemir, Sevgi İrtegun; Aktepe, Necmettin; Baran, Ayse; Baran, Mehmet Fırat; Atalar, Mehmet Nuri; Keskin, Cumali; Karadağ, Musa (Springer Int Publ Ag, 2024)Purpose The phenolic composition, antioxidant, antimicrobial activity, enzyme inhibition activity, and cytotoxic activity potentials of the plant Rumex acetosella L. (R. acetosella) were examined in this study. Materials ... -
Ecofriendly synthesis of silver nanoparticles using ananas comosus fruit peels: Anticancer and antimicrobial activities
Baran, Ayşe; Keskin, Cumali; Baran, Mehmet Fırat; Huseynova, Irada; Khalilov, Rovshan; Eftekhari, Aziz; Kandemir, Sevgi İrtegün; Kavak, Deniz Evrim (Hindawi LTD, 2022)Metallic nanoparticles are valuable materials and have a range of uses. Nanoparticles synthesized from plant wastes by environment-friendly methods have attracted the attention of researchers in recent years. Also, the ... -
Ecofriendly/Rapid synthesis of silver nanoparticles using extract of waste parts of artichoke (Cynara scolymus L.) and evaluation of their cytotoxic and antibacterial activities
Baran, Ayşe; Baran, Mehmet Fırat; Keskin, Cumali; Kandemir, Sevgi İrtegün; Valiyeva, Mahbuba; Mehraliyeva, Sevil; Khalilov, Rovshan; Eftekhari, Aziz (Hindawi Limited, 2021)Recycling wastes and providing their use in useful fields attract attention every day. In our study, with the extract prepared from the parts of the Cynara scolymus L. (artichoke) plant that is not suitable for human ... -
Economic fast synthesis of olive leaf extract and silver nanoparticles and biomedical applications
Atalar, Mehmet Nuri; Baran, Ayse; Baran, Mehmet Firat; Keskin, Cumali; Aktepe, Necmettin; Yavuz, Omer; Kandemir, Sevgi Irtegun (Taylor & Francis Inc, 2022)In this study, silver nanoparticles (AgNPs) were synthesized economically and simply using an environmentally friendly method with the extract obtained from agricultural waste olive leaves. AgNPs synthesized according to ... -
Fast and economical biosorption of lead (II) heavy metal in aqueous solutions by bacillus licheniformis sp.
Baran, Mehmet Fırat; Düz, M. Zahir; Baran, Ayşe; Keskin, Cumali (Kahramanmaraş Sütçü İmam Üniversitesi, 2022)Lead is used in many areas of industry. Considering the prevalence of use, there is an intense lead and heavy metal content in the wastes resulting from these applications, and the toxic pollution caused by these metals ... -
Fatty acid and 3-hydroxy fatty acid composition of two Hypericum species from Turkey
Özen, Hasan Çetin; Başhan, Mehmet; Keskin, Cumali; Toker, Zuhal (Wiley, 2004)The fatty acid compositions of flowering tops of Hypericum perforatum L. and Hypericum retusum Aucher (Guttiferae) were analyzed by gas chromatography and gas chromatography-mass spectrometry. The major components were ... -
Green synthesis and characterization of selenium nanoparticles (Se NPs) from the skin (testa) of Pistacia vera L. (Siirt pistachio) and investigation of antimicrobial and anticancer potentials
Baran, Mehmet Fırat; Keskin, Cumali; Baran, Ayşe; Kurt, Kadri; İpek, Polat; Eftekhari, Aziz; Khalilov, Rovshan; Fridunbayov, Ismayil; Cho, William C. (Springer Science and Business Media, 2023)Metallic nanoparticles created by ecologically friendly synthesis processes are becoming increasingly useful in a variety of applications. Because of their strong bioactive component qualities, biocompatible architectures, ... -
Green synthesis and evaluation of antipathogenic, antioxidant, and anticholinesterase activities of gold nanoparticles (Au NPs) from Allium cepa L. peel aqueous extract
İpek, Polat; Baran, Mehmet Fırat; Baran, Ayşe; Hatipoğlu, Abdulkerim; Keskin, Cumali; Yıldıztekin, Mahmut (Springer Science and Business Media, 2023)Gold nanoparticles (Au NPs) have potentially therapeutic properties as they are synthesized via biomolecules as reducing and stabilizing agent(s). The aim of this study is to develop an easy and eco-friendly method for the ... -
Green synthesis of silver nanoparticles based on the Raphanus sativus leaf aqueous extract and their toxicological/microbiological activities
Hatipoğlu, Abdulkerim; Baran, Ayşe; Keskin, Cumali; Baran, Mehmet Fırat; Eftekhari, Aziz; Omarova, Sabina; Janas, Dawid (Springer Heidelberg, 2023)Silver nanoparticles (AgNPs) have several uses. Many scientists are working on producing AgNPs from plant extracts for use as biomedicines against drug-resistant bacteria and malignant cell lines. In the current study, ... -
Green synthesis of silver nanoparticles from Allium cepa L. peel extract, their antioxidant, antipathogenic, and anticholinesterase activity
Baran, Mehmet Fırat; Keskin, Cumali; Baran, Ayşe; Hatipoǧlu, Abdülkerim; Yıldıztekin, Mahmut; Küçükaydın, Selçuk; Hoşgören, Hülya (MDPI, 2023)The present work deals with the green synthesis and characterization of silver nanoparticles (AgNPs) using Allium cepa (yellowish peel) and the evaluation of its antimicrobial, antioxidant, and anticholinesterase activities. ... -
Green synthesis, characterization of gold nanomaterials using gundelia tournefortii leaf extract, and determination of their nanomedicinal (Antibacterial, antifungal, and cytotoxic) potential
Keskin, Cumali; Baran, Ayşe; Baran, Mehmet Fırat; Hatipoğlu, Abdulkerim; Adican, Mehmet Tevfik; Atalar, Mehmet Nuri; Yavuz, Ömer; Kandemir, Sevgi İrtegün (Hindawi LTD, 2022)Introduction. Fighting against cancer and antibiotic resistance are important challenges of healthcare systems, and developing new treatment methods has become the most concentrated area of researchers. Method and Materials. ... -
In-vitro Antioxidant, Cytotoxic, Cholinesterase Inhibitory Activities and Anti-Genotoxic Effects of Hypericum retusum Aucher Flowers, Fruits and Seeds Methanol Extracts in Human Mononuclear Leukocytes
Keskin, Cumali; Aktepe, Necmettin; Yukselten, Yunus; Asuman; Boga, Mehmet (Shaheed Beheshti Univ, Sch Pharmacy, 2017)The present study investigates the antioxidant, anticancer, anticholinesterase, anti-genotoxic activities and phenolic contents of flower, fruit and seed methanol extracts of Hypericum retusum AUCHER. The amounts of ...
