Tükenmez Emre, Ümmügülsüm
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Name Variants
Tukenmez, Ummugulsum
Tukenmez Emre, U.
Tükenmez, Ümmügülsüm
Tukenmez Emre, U.
Tükenmez, Ümmügülsüm
Job Title
Doktor Öğretim Üyesi
Email Address
ummugulsumtukenmez@artuklu.edu.tr
Main Affiliation
Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri Bölümü
Status
Website
ORCID ID
Scopus Author ID
Turkish CoHE Profile ID
Google Scholar ID
WoS Researcher ID
Sustainable Development Goals Report Points
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Scholarly Output
3
Articles
2
Citation Count
194
Supervised Theses
0
3 results
Scholarly Output Search Results
Now showing 1 - 3 of 3
Review Citation - WoS: 3Citation - Scopus: 3Harnessing Polysaccharides for Sustainable Food Packaging(Springer Science and Business Media Deutschland GmbH, 2025) Tükenmez Emre, Ümmügülsüm; Sirin, S.; Nigdelioglu Dolanbay, S.; Aslim, B.; Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri BölümüThis review provides a comprehensive analysis of food packaging techniques, focusing on the limitations of conventional methods and the promising potential of polysaccharide-based materials as sustainable alternatives. Traditional packaging materials, such as plastics, glass, metal, and paper, pose significant environmental risks due to their non-biodegradable nature. In contrast, polysaccharide-based materials, derived from renewable sources, are biodegradable and offer enhanced food preservation properties. These materials boast several advantages, including biodegradability, renewability, and superior physical attributes such as excellent barrier properties and mechanical strength. The review also delves into transformation techniques aimed at improving the effectiveness of polysaccharide-based materials. These include physical and chemical modifications to optimize their performance. Furthermore, a detailed categorization of polysaccharides is provided based on their origin, encompassing animal-derived polysaccharides (chitin, chitosan), plant-derived polysaccharides (cellulose, starch, pectin, gum arabic, guar gum, tragacanth gum, locust bean gum), marine-derived polysaccharides (alginate, agar, carrageenan), and microbial-derived polysaccharides (pullulan, xanthan gum, dextran, bacterial cellulose). Additionally, we explore case studies highlighting the practical applications and performances of these materials in the food packaging industry. © The Author(s) 2025.Article Citation - WoS: 28Citation - Scopus: 30Structural analysis and biological functionalities of iron(III)- and manganese(III)-thiosemicarbazone complexes: in vitro anti-proliferative activity on human cancer cells, DNA binding and cleavage studies(Springer, 2019) Tükenmez Emre, Ümmügülsüm; Yılmaz, Zehra Kübra; Şahin, Onur; Aslim, Belma; Tükenmez, Ümmügülsüm; Ülküseven, Bahri; Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri BölümüOne iron(III) and two manganese(III) complexes based on thiosemicarbazone were synthesized and characterized using analytical and spectroscopic data. The crystallographic analysis showed the square pyramid structures of the complexes. Electronic spectra analysis was performed to determine the nature of the interaction between the complexes and calf thymus DNA (CT-DNA). DNA cleavage activities of the complexes were examined by gel electrophoresis (pBR322 DNA). The cytotoxicity of the complexes was determined against human cervical carcinoma (HeLa) and human colorectal adenocarcinoma (HT-29) cell lines by MTT assay. The results indicated that complex Fe1 is bound to CT-DNA via the intercalation mode, while complexes Mn1 and Mn2 are bound to CT-DNA via groove binding and/or electrostatic interactions rather than the intercalation mode. In addition, they showed good binding activity, which followed the order of Fe1 > Mn2 > Mn1. Complexes were found to promote the cleavage of DNA from supercoiled form (SC, Form I) to nicked circular form (NC, Form II) without concurrent formation of Form III, revealing the single-strand DNA cleavage. No significant cleavage was found in the presence of Mn1 and Mn2; however, it was observed at 2000 and 3000 µM concentrations of Fe1. The ability of Fe1 to cleave DNA was greater than that of other complexes and these results are in conformity with their DNA-binding affinities. Cytotoxicity determination tests revealed that the complex Fe1 on HeLa and HT-29 cells exhibited a higher anti-proliferative effect than Mn1 and Mn2 (Fe1 > Mn2 > Mn1). These studies suggested that the complex Fe1 could be a good candidate as a chemotherapeutic drug targeting DNA.Article Citation - WoS: 28Citation - Scopus: 30Structural analysis and biological functionalities of iron(III)- and manganese(III)-thiosemicarbazone complexes: in vitro anti-proliferative activity on human cancer cells, DNA binding and cleavage studies(SPRINGER, 2019) Tükenmez Emre, Ümmügülsüm; Yilmaz, Zehra Kubra; Sahin, Onur; Aslim, Belma; Tukenmez, Ummugulsum; Ulkusever, Bahri; Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri BölümüOne iron(III) and two manganese(III) complexes based on thiosemicarbazone were synthesized and characterized using analytical and spectroscopic data. The crystallographic analysis showed the square pyramid structures of the complexes. Electronic spectra analysis was performed to determine the nature of the interaction between the complexes and calf thymus DNA (CT-DNA). DNA cleavage activities of the complexes were examined by gel electrophoresis (pBR322 DNA). The cytotoxicity of the complexes was determined against human cervical carcinoma (HeLa) and human colorectal adenocarcinoma (HT-29) cell lines by MTT assay. The results indicated that complex Fe1 is bound to CT-DNA via the intercalation mode, while complexes Mn1 and Mn2 are bound to CT-DNA via groove binding and/or electrostatic interactions rather than the intercalation mode. In addition, they showed good binding activity, which followed the order of Fe1>Mn2>Mn1. Complexes were found to promote the cleavage of DNA from supercoiled form (SC, Form I) to nicked circular form (NC, Form II) without concurrent formation of Form III, revealing the single-strand DNA cleavage. No significant cleavage was found in the presence of Mn1 and Mn2; however, it was observed at 2000 and 3000 mu M concentrations of Fe1. The ability of Fe1 to cleave DNA was greater than that of other complexes and these results are in conformity with their DNA-binding affinities. Cytotoxicity determination tests revealed that the complex Fe1 on HeLa and HT-29 cells exhibited a higher anti-proliferative effect than Mn1 and Mn2 (Fe1>Mn2>Mn1). These studies suggested that the complex Fe1 could be a good candidate as a chemotherapeutic drug targeting DNA. [GRAPHICS]
