Yazar "Baran, Mehmet Fırat" seçeneğine göre listele

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    1,10-fenantrolin türevi Ru(II) komplekslerinin sentezi, tanımlanması ve aromatik ketonların transfer hidrojenasyon reaksiyonlarındaki katalitik aktivitelerinin incelenmesi
    (2016) Baran, Mehmet Fırat; Baysal, Akın
    Kimyasal kararlılıkları, redoks ve floresans özelliklerinden dolayı polipridin ve fenantrolinlerin geçiş metal komplekslerine olan ilgi giderek artmaktadır. Bu kompleksler fotokimya, fotofizik ve fotoelektrokimyanın gelişmesinde önemli bir rol oynar. Fluoren ve fluorenonun azot analogları yüksek biyolojik aktiviteleri, farmasötik uygulama imkanları ve bu az bilinen bileşik sınıfının sentetik öneminden dolayı ilgi çekmektedir. 1,10-fenantrolinin türevi olan ve otuz yıl önce sentezlenen 4,5-diazafluoren-9-on ve 4,5-diazafluoren bileşiği koordinasyon kimyasındaönemli bir ligand sınıfı olarak görülmüştür. Geçiş metal kompleksleriyle katalizlenen, doymamış organik substratların indirgenmesi, hidrojenasyon veya bir donör atomdan hidrojen transferi yoluyla gerçekleştirilebilir ve fonksiyonilize bileşikleri elde etmede sentetik öncüller olan alkolleri elde etmede yararlı bir metodtur. Transfer hidrojenasyonda katalizör olarak Rh(I),Ru(II)ve Ir(III) kompleksleri yaygın olarak kullanılmış ve etkin katalizörler oldukları kanıtlanmıştır. Noyori ve çalışma arkadaşları tarafından gösterildiği gibi bünyelerinde 1,2-diaminleri taşıyan Ru(II) kompleksleri karbonil bileşiklerinin transfer hidrojenasyon için etkin katalizörlerdir. N-donör ligandları taşıyan değişik türdeki Ru(II) de kompleksleri transfer hidrojenasyonda en iyi katalizörler geliştirmek için çalışılmıştır. Bu amaçla pridin çekirdeğiiçeren polidendat ligandlar son zamanlarda başarılı bir şekilde kullanılmıştır. Yinede Ru(II) komplekslerinin homojen katalizdeki uygulaması nispeten az çalışılmıştır. Bu çalışmanın amacı; 1,10-diazafenantrolin türevi ligandların Ru(II) komplekslerini sentezlemek ve tanımlamaktır. Sentezlenen Ru(II) komplekslerinin varlığında ketonların transfer hidrojenasyonun reaksiyonlarındaki katalitik etkinliklerini incelemektir. Anahtar Kelimeler: 1,10-fenantrolin, 4,5-diazafluoren-9-on, 4,5-diazafluren, Homojen Kataliz, Rutenyum, Transfer hidrojenasyon
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    Adsorption performance of Bacillus licheniformis sp. bacteria isolated from the soil of the Tigris River on mercury in aqueous solutions
    (Taylor and Francis Ltd., 2022) Baran, Mehmet Fırat; Yıldırım, Ayfer; Acay, Hilal; Keskin, Cumali; Aygün, Hüsamettin
    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 are used as adsorbents in the removal of toxic metals from the environment and wastewaters. However, using microorganisms as bio-sorbents instead of chemical materials has become common recently due to their low cost, easy availability and presence in nature. In this study, Bacillus licheniformis in the soil isolated from the Tigris River was used as bio-sorbent. The mercury (Hg(II)) absorption behaviour of Bacillus licheniformis bacteria (BLB) was investigated using inductively coupled plasma mass spectrometry. The effects of equilibrium of adsorption time, temperature, adsorbent dosage and pH on the adsorption of Hg (II) onto BLB were determined. The maximum adsorption capacity of Hg (II) onto BLB was determined as 82.12 mg/g (T = 25°C, pH 5, Co = 50 mg/L, m = 25 mg). The BLB was characterised using Fourier transform infrared spectroscopy analysis, thermal gravimetric analysis/differential thermal analysis, scanning electron microscopy analysis and energy-dispersive X-ray spectroscopy analysis. In addition, pseudo-first-order and pseudo-second-order kinetic models were applied. The equilibrium data for the adsorption of Hg(II) onto BLB were examined by the Langmuir and Freundlich isotherm models. The activation energy was calculated using the pseudo-second-order rate constant. These results suggested the BLB can be used as an efficient adsorbent for the removal of Hg(II) metal ions from wastewater. When the results of bio-sorption studies were examined, it was found that the bio-sorbent could be reused easily. The present study suggests that microorganism bio-sorbents are useful for the efficient removal of mercury from aqueous solutions.
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    Altın nanomalzeme sentezi ve karekterizasyonu
    (Dicle Üniversitesi Mühendislik Fakültesi, 2019) Baran, Mehmet Fırat; Saydut, Abdurrahman
    Nanobiyoteknoloji, nanobilim ve teknolojide çarpıcı ve en hızlı gelişen alanlardan biridir. Altın nanopartikülleri (AuNP'ler), yeşil sentez ile herhangi bir yüzey aktif madde, stabilizatör ve kimyasal madde kullanılmadanbıttım(Pistacia terebinthus) yaprak özütü kullanılarak elde edilmiştir. Elde edilen AuNP’lerin karekterizasyonu UV-vis, SEM-EDX, XRD, FTIR ve TGA-DTA ile yapıldı. SEM-EDX, analizi incelendiğinde sentezlenen nanomalzemelerin kristal boyutunun 100 nm’nin altında olduğu ve kristal yapısının küresel olduğu anlaşılmaktadır. UV-vis, analizi verileri gösterdiki oda koşullarında farklı zaman aralıklarında yapılan ölçümler sonucunda renk değişimi ile maksimum dalga boyunun 335 nm’de karesteristik pik verdiği görüldü. XRD analizi verilerinden kristal yapılarının boyutu 14.37 nm büyüklükte olduğu hesaplandı. Ayrıca çalışmamızda sentezlenen nanomalzemenin TGA-DTA analizi yapılarak nanoparçacıkların 1000 oC ‘ye kadar dayanıklı olduğu rapor edildi.
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    Anticancer Activities of Zinc Oxide Nanoparticles (ZnONPs) Synthesized from Mentha longifolia L. Leaf Extract
    (2024) İpek, Polat; Baran, Mehmet Fırat; Hatipoğlu, Abdulkerim; Baran, Ayşe
    Recently, there has been a remarkable increase in cancer and cancer-related deaths. In this study, the impacts of zinc oxide nanoparticles (ZnONPs) produced from the aqueous leaf extract of Mentha longifolia L. (ML) on ovary adenocarcinoma (OVCAR-3), colorectal carcinoma (HCT-116), and healthy retinal pigment epithelial cell (RPE-1) lines were investigated. The MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) test was performed to discover its antiproliferative properties. As a result of the application of ML-ZnONPs on RPE-1, OVCAR-3, and HCT-116 cell lines at doses (µg/mL) of 250, 500, and 1000 for 24 hours, the viability rates (%) in the cell lines were 18.73-30.56, 21.98-28.76, and 27.27-40.93, respectively. In the 48-hour application, the viability rates (%) of the same cells were between 29.51-46.83, 32.49-40.81, and 46.82-44.37, respectively. The MTT test revealed that ML-ZnONPs strongly suppressed the growth of RPE-1, OVCAR-3, and HCT-116 cell lines. The test showed that the effect of dose increase and time on the viability of both cancer cell lines was negative.
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    Anticancer Activities of Zinc Oxide Nanoparticles (ZnONPs) Synthesized from Mentha longifolia L. Leaf Extract
    (Iğdır Üniversitesi, 2024) İpek, Polat; Baran, Mehmet Fırat; Hatipoğlu, Abdulkerim; Baran, Ayşe
    Recently, there has been a remarkable increase in cancer and cancer-related deaths. In this study, the impacts of zinc oxide nanoparticles (ZnONPs) produced from the aqueous leaf extract of Mentha longifolia L. (ML) on ovary adenocarcinoma (OVCAR-3), colorectal carcinoma (HCT-116), and healthy retinal pigment epithelial cell (RPE-1) lines were investigated. The MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) test was performed to discover its antiproliferative properties. As a result of the application of ML-ZnONPs on RPE-1, OVCAR-3, and HCT-116 cell lines at doses (µg/mL) of 250, 500, and 1000 for 24 hours, the viability rates (%) in the cell lines were 18.73-30.56, 21.98-28.76, and 27.27-40.93, respectively. In the 48-hour application, the viability rates (%) of the same cells were between 29.51-46.83, 32.49-40.81, and 46.82-44.37, respectively. The MTT test revealed that ML-ZnONPs strongly suppressed the growth of RPE-1, OVCAR-3, and HCT-116 cell lines. The test showed that the effect of dose increase and time on the viability of both cancer cell lines was negative.
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    Antioxidant properties of allium turcicum Özhatay & cowley plant extract, its effects on the proliferation and migration of cancer cells
    (Frontiers Media SA, 2024) İpek, Polat; Baran, Ayşe; Cebe, Deniz Barış; Ahmadian, Elham; Eftekhari, Aziz; Baran, Mehmet Fırat
    Cancer is a type of non-communicable disease that is responsible for numerous deaths worldwide. Cancer incidence and mortality rates are on the rise due to a combination of factors, such as a growing population, aging, and poor dietary habits. The Allium turcicum Özhatay & Cowley plant is an endemic plant in the area where it grows and is consumed by the public due to its various benefits. This endemic plant, which generally grows in high-altitude regions, is sold in bunches because it is costly, mixed with rock salt, crushed into powder, and consumed as a spice. The cytotoxic and growth-inhibitory effects of A. turcicum Özhatay & Cowley herb extract on human glioblastoma U373 cells, human colorectal carcinoma cell HCT-116, and healthy HUVEC cell lines were determined by the MTT method. After 24 and 48 h of application, logIC50 values in HUVEC, HCT-116, and U373 cells were defined as 3.737, 3.765; 3.513, 3.696, 4.476, and 4.104 μg/mL, respectively. We conducted a cell migration experiment to study the A. turcicum Özhatay & Cowley Extract (ATÖCE) impact on cancer cells’ metastatic behavior. Our findings indicate that ATÖCE has an inhibitory effect on the migration potential of the cells used in the study. We conducted experiments using DPPH, ABTS, CUPRAC, and total phenolic content to assess the antioxidant properties of ATÖCE. The findings from the antioxidant activity experiments revealed an activity level of 0.20 ± 0.046 at IC50. Additionally, the total phenolic content was measured to be 0.26 ± 0.044 mg GAE/g. Copyright © 2024 İPEK, Baran, Cebe, Ahmadian, Eftekhari and Baran.
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    Biosynthesis of silver nanoparticles from Arum dioscoridis plant leaf aqueous extract: anticancer and antimicrobial properties
    (Gültekin ÖZDEMİR, 2023) İpek, Polat; Baran, Mehmet Fırat; Yıldız, Reşit; Hatipoğlu, Abdulkerim
    This study was carried out to synthesize silver nanoparticles (AgNPs) from Arum dioscoridis (AD) leaf extract and to investigate the cytotoxic and antipathogenic effects of them. The plant material had a reducing and stabilizing effect on the synthesized nanomaterial. During the plant-mediated synthesis of nanomaterials, no substances that would cause environmental pollution were used. For the structural characterization of AD-AgNPs, Ultraviolet-visible (UV-vis) Spectroscopy, Field Emission Scanning Electron Microscopy (FE-SEM), Electron Dispersive X-ray (EDX) Spectroscopy, Fourier Transform Infrared (FT-IR) Spectroscopy, Transmission Electron Microscopy (TEM), X-ray Diffractometer (XRD), Atomic Force Microscopy (AFM) and Zetasizer analyses were performed. The produced AgNPs showed maximum surface plasmon resonance at 431.67 nm and had mostly spherical morphology. The zeta potential value of the nanomaterial was -9.76 mV and the average powder crystal size was 31.48 nm. The minimum inhibitory concentration (MIC) values (mg/L) of AD-AgNPs on Staphylococcus aureus, Escherichia coli, Bacillus subtilis, Pseudomonas aeruginosa, and Candida albicans were 0.25, 2.00, 0.125, 4.00, and 1.00, respectively. After 24 and 48 hours of application by MTT [3-(4,5-dimetiltiazol-2-il)-2,5-difeniltetrazolium bromid] assay, the half-maximal inhibitory concentrations (IC50: μg/mL) of AD-AgNPs on human colon adenocarcinoma cell (CACO-2), human breast cancer cell (MCF-7), glioblastoma multiforme cell (T98-G), and healthy human umbilical vein endothelial cell (HUVEC) lines were determined as 2.977, 2.801, 5.694, 4.392; 2.115, 2.300, 2.612, 4.091, respectively.
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    Biosynthesis, characterization, and investigation of antimicrobial and cytotoxic activities of silver nanoparticles using Solanum tuberosum peel aqueous extract
    (Elsevier Ltd., 2023) Xu, Jiajun; Yıldıztekin, Mahmut; Han, Dayong; Keskin, Cumali; Baran, Ayşe; Baran, Mehmet Fırat; Ava, Canan Aytuğ; Kandemir, Sevgi İrtegün
    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 eco-friendly approach in recent years. This study reported the ability of Solanum tuberosum (ST) peel extract to the green synthesis of non-toxic, stable, small-sized silver nanoparticles without any toxic reducing agent utilizing the phytochemical components present in its structure. UV–visible spectroscopy, X-ray diffraction analysis, Fourier transform infrared spectroscopy, flourier scanning electron microscopy, atomic force microscopy, transmission electron microscopy, and energy dispersive analysis X-ray confirmed the biosynthesis and characterization of silver nanoparticles. Also, dynamic light scattering and thermogravimetric analyses showed stable synthesized nanoparticles. The antibacterial activity of the biosynthesized silver nanoparticles was evaluated against four different bacterial strains, Escherichia coli (E. coli), Pseudomonas aeruginosa (P. aeruginosa), Staphylococcus aureus (S. aureus) Bacillus subtilis (B. subtilis), and a yeast, Candida albicans (C. albicans) using the minimum inhibitory concentration technique. The cytotoxic activities were determined against Human dermal fibroblast (HDF), glioblastoma (U118), colorectal adenocarcinoma (CaCo-2), and human ovarian (Skov-3) cell lines cancer cells using MTT test. The nanoparticle capping agents that could be involved in the reduction of silver ions to Ag NPs and their stabilization was identified using FTIR. Nanoparticles were spherical in shape and had a size ranging from 3.91 to 27.07 nm, showed crystalline nature, good stability (−31.3 mV), and the presence of capping agents. ST-Ag NPs significantly decreased the growth of bacterial strains after treatment. The in vitro analysis showed that the ST-Ag NPs demonstrated dose-dependent cytotoxicity against cell lines. Based on the data, it is feasible to infer that biogenic Ag NPs were capped with functional groups and demonstrated considerable potential as antibacterial and anticancer agents for biomedical and industrial applications.
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    Cytotoxic potential of selenium nanoparticles (SeNPs) derived from leaf extract of Mentha longifolia L.
    (2024) İpek, Polat; Baran, Ayşe; Hatipoğlu, Abdulkerim; Baran, Mehmet Fırat
    The search for alternative methods in cancer treatments has been going on for many years. In the current study conducted for this purpose, selenium nanoparticles (ML-SeNPs) were produced from the aqueous leaf extract of Mentha longifolia L. easily and inexpensively, without harming the environment. The anticancer potential of ML-SeNPs on glioblastoma cell (U373), osteosarcoma cell (U2OS), and healthy retinal pigment epithelial cell (RPE-1) lines was determined by MTT (3-(4,5-dimetiltiazol-2-il)-2,5-difeniltetrazolium bromid) test. For the test, ML-SeNPs were applied at 100, 300, and 600 µg/mL levels and interaction was provided for 24 and 48 hours. The survival rates (%) in RPE-1, U373, and U2OS cell lines in the 24-hour application were 107.49-98.89, 97.66-86.82, and 87.81-83.37, respectively. The viability rates (%) of the cells in 48 hours of application were 72.27-87.39, 68.17-73.48, and 81.00-84.67, respectively. In general, it was discovered that the cytotoxic effect of ML-SeNPs on RPE-1, U373, and U2OS cell lines was greater at low doses and increased over time. In-vivo studies that support the antiproliferative action of ML-SeNPs may boost the prospect of using them as therapeutic agents in potential cancer treatment procedures in the following years.
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    Cytotoxic potential of selenium nanoparticles (SeNPs) derived from leaf extract of Mentha longifolia L.
    (Gültekin ÖZDEMİR, 2024) İpek, Polat; Baran, Ayşe; Hatipoğlu, Abdülkerim; Baran, Mehmet Fırat
    The search for alternative methods in cancer treatments has been going on for many years. In the current study conducted for this purpose, selenium nanoparticles (ML-SeNPs) were produced from the aqueous leaf extract of Mentha longifolia L. easily and inexpensively, without harming the environment. The anticancer potential of ML-SeNPs on glioblastoma cell (U373), osteosarcoma cell (U2OS), and healthy retinal pigment epithelial cell (RPE-1) lines was determined by MTT (3-(4,5-dimetiltiazol-2-il)-2,5-difeniltetrazolium bromid) test. For the test, ML-SeNPs were applied at 100, 300, and 600 µg/mL levels and interaction was provided for 24 and 48 hours. The survival rates (%) in RPE-1, U373, and U2OS cell lines in the 24-hour application were 107.49-98.89, 97.66-86.82, and 87.81-83.37, respectively. The viability rates (%) of the cells in 48 hours of application were 72.27-87.39, 68.17-73.48, and 81.00-84.67, respectively. In general, it was discovered that the cytotoxic effect of ML-SeNPs on RPE-1, U373, and U2OS cell lines was greater at low doses and increased over time. In-vivo studies that support the antiproliferative action of ML-SeNPs may boost the prospect of using them as therapeutic agents in potential cancer treatment procedures in the following years.
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    Deciphering the effect of Potentilla fulgens root extract against healthy HUVEC cell line and cancer cell lines (A549 and SKOV-3)
    (Elsevier B.V., 2024) İpek, Polat; Baran, Ayşe; Baran, Mehmet Fırat; Eftekhari, Aziz; Khusro, Ameer; Ommati, Mohammad Mehdi; Aliyev, Elvin; Khalilov, Rovshan
    Background: Potentilla fulgens, a highly valued indigenous medicinal herb grown in high altitudes of the Himalayan region with anticancer, hypoglycaemic, antibacterial, anti-inflammatory, and antiulcerogenic properties, are used in traditional systems of medicine. This study was aimed to investigate the effect of P. fulgens root extract, as one of the natural alternatives to chemotherapeutic drugs used in cancer treatment, on proliferation, apoptosis, and autophagy of human non-small cell lung cancer cell line (A549), human ovarian cancer cell line (SKOV-3), and healthy human umbilical vein endothelial cell line (HUVEC). Methods: Anti-proliferative effect was assessed by MTT assay. The expression of autophagy and apoptosis-related proteins was evaluated by western blotting. Total oxidant status (TOS) and total antioxidant capacity (TAC) test were determined using standard kit methods. Results: Our results showed that the extract inhibited proliferation of HUVEC, A549, and SKOV-3 cells in a dose-dependent manner. MTT assay analysis revealed that the extract significantly (P<0.05) induced mortality in HUVEC, A549, and SKOV-3 cells. Western blot results revealed increased expression of NF-κB after the extract treatment but led to the down-regulation in Beclin-1, Bax, extracellular-signal-related kinase 1 and 2, Sequestosome-1, and cleaved Casp-3 levels. Treatment groups showed an increase in TOS and TAC values in A549 and SKOV-3 cell lines, while HUVEC cell line showed an increase in TAC and a decrease in TOS values, compared to the control group. Conclusions: Our findings indicated that P. fulgens root extract inhibited the proliferation of healthy cells and cancer cells through cell cycle arrest, representing its limited application as therapeutic agent in cancer treatment.
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    Determination of chemical components of the endemic species Allium turcicum L. plant extract by LC-MS/MS and evaluation of medicinal potentials
    (Elsevier Ltd, 2024) İpek, Polat; Atalar, Mehmet Nuri; Baran, Ayşe; Baran, Mehmet Fırat; Ommati, Mohammad Mehdi; Karadağ, Musa; Zor, Murat
    The Allium turcicum L. (Zuzubak) plant as a cultivated vegetable have various health benefits and consumed as a food. Due to the shortcoming evidence in literature and the importance of this plant in folk medicine, in the present study, for the first time, we evaluated the bioactive profile of components (using LC-MS/MS), cytotoxicity, anticancer, antioxidant, and antibacterial prospectives of Zuzubak methanol extract. Reported results show that the extract is rich in bioactive compounds and has anticancer activity with breast cancer cells (MCF-7), human prostate cancer cells (DU-145), and Human osteosarcoma cancer Cell lines of (IC50) in dose dependent manner in the concentration range of 31.25 ?g/mL and 2000 ?g/mL for 24 and 48 h. Western blotting results determined that the extract significantly suppressed the growth of U2OS, MCF-7, and DU-145 cancer cells by down expression of Ang-1 (angiogenic protein) and Beclin-1 (autophagy protein) and overexpression of Bax (a proapoptotic protein). The oxidative stress indices showed a reduction in RPE-1 and MCF-7 cells and an upsurge in U2OS and DU-145 cells. Additionally, the antimicrobial assay showed suppression of the growth of various pathogenic microorganisms in 4.00–8.00 ?g/concentrations of Zuzubak extract using the microdilution method. The phytochemicals identified showed promising anticancer, antioxidant effects, and antimicrobial properties, representing a valuable herbal source for drug development studies. © 2024 The Authors
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    Determination of chemical composition and antioxidant, cytotoxic, antimicrobial, and enzyme inhibition activities of Rumex acetosella L. plant extract
    (Springer Int Publ Ag, 2024) Kandemir, Sevgi İrtegun; Aktepe, Necmettin; Baran, Ayse; Baran, Mehmet Fırat; Atalar, Mehmet Nuri; Keskin, Cumali; Karadağ, Musa
    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 and Methods: The chemical composition of R. acetosella methanol extract was identified by the LC-MS/MS method. The antioxidant activity was tested using beta-carotene/linoleic acid, DPPH free radical scavenging, ABTS cation radical scavenging, CUPRAC reducing power, and metal chelating activity methods. The cytotoxic activity was determined by the MTT assay using human ovarian adenocarcinoma (Skov-3), glioblastoma (U87), human dermal fibroblasts (HDF), and human colorectal adenocarcinoma (CaCo-2) cell lines. The antimicrobial activity of methanolic extracts was tested on gram-negative (Escherichia coli and Pseudomonas aeuriginosa) and gram-positive bacteria (Staphylococcus aureus and Bacillus subtilis) using the in vitro minimum inhibition concentration method (MIC). Enzyme inhibition activity of R. acetosella methanol extract was measured spectrophotometrically against acetylcholinesterase (AChE) and glutathione S-transferase (GST) enzymes. Results: The findings showed that the major components of the methanol extract content were luteolin-7-O-glucoside (1.599 m/L), polydatin (91,024 m/L), and shikimic acid (0.773 m/L). It was determined that the extract and standard antioxidant (a-tocopherol) results in DPPH center dot, and ABTS center dot + tests performed to determine the antioxidant activity were close to each other, and this value was more effective than the standard antioxidant (alpha-tocopherol) in the CUPRAC test. These results suggested that the plant's antioxidant potential was higher when compared with reference antioxidant compounds. It was determined that the methanol extract of R. acetosella had a weaker effect on the growth of the tested microorganisms than the antibiotics used as standard. The activity of the GST and AChE enzymes was found to be severely inhibited by the methanol extract of R. acetosella. Conclusion: Based on these findings, R. acetosella L. is a medicinal and commercially beneficial plant that warrants further investigation.
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    Determination of energy usage and greenhouse gas (GHG) emissions in artichoke production
    (2024) Demir, Cihan; Baran, Mehmet Fırat; Eliçin, Ahmet Konuralp
    This study has been conducted with the purpose of determining the energy usage (EU) and greenhouse gas (GHG) emissions of artichoke production. It has been conducted in Efeler district of Aydın province of Türkiye during the 2022 production period. According to the results of the study, total input energy (EI) was calculated to be 32 211.48 MJ/ha and output energy (OE) was calculated to be 5 460 MJ/ha. EI in artichoke production were 15 718.20 MJ/ha (48.80%) chemical fertilizers energy, 8 896.98 (27.62%) diesel fuel energy, 3 832.27 (11.90%) machinery energy, 1 958.40 (6.08%) electricity energy, 1 036.35 (3.22%) irrigation water energy, 329.55 (1.02%) human labour energy, 294 MJ/ha (0.91%) plant energy and 145.73 (0.45%) chemicals energy, respectively. Energy use efficiency (EUE), specific energy (SE), energy productivity (EP) and net energy (NE) values were found as 0.17, 4.72 MJ/kg, 0.21 kg/MJ and -26 751.48 MJ/ha, respectively. The total energy inputs that were involved in artichoke production were classified as: 37.94% (12 221.28 MJ/ha) direct (IE), 62.06% (19 990.20 MJ/ha) indirect (IDE), 5.15% (1 659.90 MJ/ha) renewable (RE) and 94.85% (30 551.58 MJ/ha) non-renewable (NRE). Total GHG emission was calculated as 1 401.64 kgCO2eq/hafor artichoke production with the greatest share for diesel fuel (31.11%). GHG ratio value was calculated as 0.21 kgCO2eq/kg in artichoke production.
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    Determination of energy usage and greenhouse gas (GHG) emissions in artichoke production
    (Gültekin ÖZDEMİR, 2024) Demir, Cihan; Baran, Mehmet Fırat; Eliçin, Ahmet Konuralp
    This study has been conducted with the purpose of determining the energy usage (EU) and greenhouse gas (GHG) emissions of artichoke production. It has been conducted in Efeler district of Aydın province of Türkiye during the 2022 production period. According to the results of the study, total input energy (EI) was calculated to be 32 211.48 MJ/ha and output energy (OE) was calculated to be 5 460 MJ/ha. EI in artichoke production were 15 718.20 MJ/ha (48.80%) chemical fertilizers energy, 8 896.98 (27.62%) diesel fuel energy, 3 832.27 (11.90%) machinery energy, 1 958.40 (6.08%) electricity energy, 1 036.35 (3.22%) irrigation water energy, 329.55 (1.02%) human labour energy, 294 MJ/ha (0.91%) plant energy and 145.73 (0.45%) chemicals energy, respectively. Energy use efficiency (EUE), specific energy (SE), energy productivity (EP) and net energy (NE) values were found as 0.17, 4.72 MJ/kg, 0.21 kg/MJ and -26 751.48 MJ/ha, respectively. The total energy inputs that were involved in artichoke production were classified as: 37.94% (12 221.28 MJ/ha) direct (IE), 62.06% (19 990.20 MJ/ha) indirect (IDE), 5.15% (1 659.90 MJ/ha) renewable (RE) and 94.85% (30 551.58 MJ/ha) non-renewable (NRE). Total GHG emission was calculated as 1 401.64 kgCO2eq/hafor artichoke production with the greatest share for diesel fuel (31.11%). GHG ratio value was calculated as 0.21 kgCO2eq/kg in artichoke production.
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    Ecofriendly synthesis of silver nanoparticles using ananas comosus fruit peels: Anticancer and antimicrobial activities
    (Hindawi LTD, 2022) Baran, Ayşe; Keskin, Cumali; Baran, Mehmet Fırat; Huseynova, Irada; Khalilov, Rovshan; Eftekhari, Aziz; Kandemir, Sevgi İrtegün; Kavak, Deniz Evrim
    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 advantages of biological resources and synthesis methods are attracting attention. In this study, silver nanoparticles were synthesized from Ananas comosus fruit peels using ecofriendly method steps. The characterization of the particles obtained was determined by using a UV-visible spectrophotometer (UV-Vis.), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction diffractometer (XRD), Fourier scanning electron microscope (FESEM), and transmission electron microscopy (TEM). The nanoparticles showed maximum absorbance at 463 nm, measuring 11.61 in crystal nanosize, and presented spherical in appearance. An antimicrobial activity test was determined with the minimum inhibition concentration (MIC) method. The nanoparticles showed promising inhibitory activity on the Gram-positive and Gram-negative pathogen microorganisms (Escherichia coli ATCC25922, Staphylococcus aureus ATCC29213, Bacillus subtilis ATCC11774, Pseudomonas aeruginosa ATCC27833 bacteria, and Candida albicans yeast) at low concentrations. The cytotoxic and growth inhibitory effects of silver nanoparticles on different cancer cell lines were examined via the MTT assay.
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    Ecofriendly/Rapid synthesis of silver nanoparticles using extract of waste parts of artichoke (Cynara scolymus L.) and evaluation of their cytotoxic and antibacterial activities
    (Hindawi Limited, 2021) Baran, Ayşe; Baran, Mehmet Fırat; Keskin, Cumali; Kandemir, Sevgi İrtegün; Valiyeva, Mahbuba; Mehraliyeva, Sevil; Khalilov, Rovshan; Eftekhari, Aziz
    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 consumption, silver nanoparticles were easily synthesized in an ec-friendly, energy-free way. Characterization of the obtained nanoparticles was done with a UV-visible spectrophotometer (UV-Vis.), fourier transform infrared spectroscopy (FTIR), X-ray diffraction diffractometer (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), and zeta potential analysis data. In these data, it was determined that AgNPs have a maximum absorbance at 458.8 nm wavelength, a crystal nanosize of 28.78 nm, and a spherical appearance. The zeta potential of (-) 16.9 mV indicates that silver nanoparticles exhibit a stable structure. Particles show antimicrobial effects on pathogenic species at concentrations of 0.03-0.25 μg/ml, and it was determined by using the minimum inhibition concentration (MIC) microdilution method. By examining their cytotoxic effects on U118, CaCo-2, and Skov-3 cancer cell lines and healthy HDF cell lines by the MTT method, concentrations of inhibitive effects on survival were determined.
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    Energy balance and greenhouse gas (GHG) emissions of sauceboat pepper (Capsicum annuum L.) production in Türkiye
    (Gültekin Özdemir, 2022) Baran, Mehmet Fırat; Eliçin, Ahmet Konuralp; Bellitürk, Korkmaz; Çelik, Ahmet
    In this study, the efficiency of energy consumption and the amount of greenhouse gas emissions from the cultivation of sauceboat pepper were determined. The experiments and research data are based on the 2020 growing season and were conducted in the Karaisali district of Adana province, Turkey. The primary data used in this study, such as the financial system, labor efficiency, fuel consumption levels, weights of tools and machinery used in sauceboat pepper production, fertilizer, and seedling quantities, were obtained from existing calculations, previous studies, and various sources. The energy ratio, specific energy, energy productivity, and net energy in sauceboat pepper were calculated as 0.82, 0.98 MJ kg-1, 1.02 kg MJ-1, and -6845.51 MJ ha-1, respectively. In the case of the sauceboat peppers, the energy of the fuel oil had the highest share of the total energy input, 31.65%. It was followed by energy for planting seedlings, energy for fertilizer, water energy for irrigation, energy for human labour, energy for spraying, and energy for machinery, with 21.55%, 19.64%, 12.55%, 8.59%, 4.45%, and 1.87%, respectively. Total GHG emissions were estimated as 3703.54 kgCO2-eq ha-1 for sauceboat pepper highest-quality production portion in human labour (31.18%). Human labour was followed by diesel fuel consumption (25.79%), machine (0.08%), seedling planting (15.90%), nitrogen fertilizer (15.88%), phosphate fertilizer (4.09%), herbicides (3.68%), fungicides (1.93%), calcium consumption (0.09%), magnesium application (0.08%) and iron (0.52%). In addition, the GHG value for the production of sauceboat peppers was calculated to be 0.096 kgCO2-eq kg-1.
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    Fast and economical biosorption of lead (II) heavy metal in aqueous solutions by bacillus licheniformis sp.
    (Kahramanmaraş Sütçü İmam Üniversitesi, 2022) Baran, Mehmet Fırat; Düz, M. Zahir; Baran, Ayşe; Keskin, Cumali
    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 affects the nearest water source directly or indirectly. Lead poses a serious threat to all life forms in the ecosystem, even at low concentrations in water. Lead recovery with environmentally friendly methods is both easier and more economical. Bacillus licheniformis sp. type was used as a biosorbent in the study. Nearly 98.4% of lead was removed by using the batch biosorption method, at 25 oC, pH 5.5, with an adsorption capacity of 42.92 in 120 minutes. from the water. The properties of the biosorbent, such as its morphological appearance, were characterized by scanning electron microscopy (SEM). Besides, the functional groups affecting biosorption in the surface structure were investigated by fourier transform Infrared spectroscopy (FT-IR)while its resistance to heat treatment was measured by thermal gravimetric analysis (TGA-DTA). The lead(II) element content in the aqueous solution was also determined by inductively coupled plasma optical emission spectroscopy (ICP-OES).
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    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
    (Springer Science and Business Media, 2023) Baran, Mehmet Fırat; Keskin, Cumali; Baran, Ayşe; Kurt, Kadri; İpek, Polat; Eftekhari, Aziz; Khalilov, Rovshan; Fridunbayov, Ismayil; Cho, William C.
    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, high stability, and low toxicity, green-produced selenium nanoparticles are particularly signifcant materials for various medicinal applications. Plants include a wealth of essential phytochemicals with therapeutic and medical capabilities. Pistachio vera L. (Siirt pistachio) is a seasonal fruit that is frequently consumed for its nutritional worth and health advantages. However, the outer colored skin of the P. vera (Siirt pistachio) fruit, which is not consumed, contains many biologically active compounds. In this study, plant-mediated synthesis of selenium nanoparticles (SeNPs) was successfully accomplished after adding the sodium selenite solution to the aqueous extract of P. vera colored skin waste. The synthesized Se NPs were characterized with UV–Vis, transmission electron microscopy (TEM), dynamic light scattering (DLS), zeta distribution, atomic force microscope (AFM), Fourier transform infrared spectrum (FTIR), thermogravimetric (TGA) and diferential thermal analysis, X-ray difraction (XRD), and energy-dispersive X-ray spectrum (EDX). Biogenic Pistacia vera (PV) PV-SeNPs were also tested for their ability to suppress the development of various pathogenic bacteria and cancerous cell lines. The UV-visible (UV–Vis) spectra revealed an absorption peak at 325 nm, which refected the surface plasmon band. The signifcant selenium signal on the EDX spectrum at 1.5 keV confrmed the creation of Se NPs. The presence of several peaks on the FTIR spectrum of the aqueous extract of Pv and the nanoparticles indicated the presence of some important functional groups such as amines, carbonyl compounds, and phenols, which are important in facilitating the process of capping and bioreduction, as well as conferring stability to nanoparticles. The TEM microphotographs revealed that the nanoparticles were highly distributed, had a spherical morphological form, and were monodisperse below 10 nm. Biogenic Pv-SeNPs exhibited similar antimicrobial activity as standard antibiotics. However, it was determined that the cytotoxic activity of Se-NPs against cancer cell lines was quite high depending on the dose and time. As a result, the Pv-SeNPs are likely to be extremely benefcial in the pharmaceutical and cosmetic sectors, as well as in the food and cosmetic industries, in producing antimicrobial and/or anticancer medications.