Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

Permanent URI for this collectionhttps://hdl.handle.net/11147/7148

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  • Article
    Citation - WoS: 1
    Toxicological Assessment of Melamine-Functionalized Graphene Oxide and Carbon Nanotubes Using Zebrafish Models
    (Wiley, 2025) Özhan, Güneş; Yildirim, Serkan; Kokturk, Mine; Nazli, Dilek; Kiliclioglu, Metin; Ozhan, Gunes; Menges, Nurettin; 01. Izmir Institute of Technology; 04. Faculty of Science; 04.03. Department of Molecular Biology and Genetics
    Graphene oxide (GO) and carbon nanotube (CNT)-based nanomaterials have attracted significant interest in various industrial and biomedical applications due to their unique physicochemical properties; however, concerns about their potential toxicity, especially when modified with additives like melamine (M), remain largely unresolved. This study investigates the toxicological effects and underlying mechanisms of graphene oxide-melamine (GO-M) and carbon nanotube-melamine (CNT-M) nanoparticles in zebrafish (Danio rerio) embryos and larvae. To this end, developmental toxicity, phenotypic and behavioral changes, as well as histopathological and immunofluorescence alterations, were evaluated following acute exposure to GO-M and CNT-M nanoparticles at concentrations of 5, 10, and 20 mg/L. Results showed that both nanoparticles delayed larval hatching, particularly at higher concentrations (10 and 20 mg/L). Malformations were observed at 20 mg/L in the GO-M group and at 10 and 20 mg/L in the CNT-M group. Additionally, significant changes in larval length and eye area were observed at all concentrations for both nanoparticles. Behavioral assessments revealed that CNT-M exposure at 10 and 20 mg/L significantly impaired head sensorimotor reflexes, while all concentrations affected tail reflexes. In contrast, GO-M exposure did not significantly alter sensorimotor responses. These findings suggest differential toxic mechanisms and neurobehavioral effects of GO-M and CNT-M nanoparticles during early zebrafish development.
  • Article
    Citation - WoS: 1
    Citation - Scopus: 1
    A Green Route to Albumin/Albumin Polyelectrolyte Complex Nanoparticles in Water With High Drug Loading for Drug Delivery
    (Elsevier, 2025) Sozer-Demirdas, Sumeyra Cigdem; Akdoğan, Yaşar; Cakan-Akdogan, Gulcin; Akdogan, Yasar; 01. Izmir Institute of Technology; 03. Faculty of Engineering; 03.09. Department of Materials Science and Engineering
    A polyelectrolyte complex (PEC) formation offers a simple and green approach to obtaining albumin nanoparticles (NPs) without the use of organic solvents, crosslinkers and specialized equipment. The prepared cationic albumin proteins interact with anionic albumin proteins to form albumin PEC NPs (110 nm) with +37 mV surface zeta potential. Furthermore, albumin PEC NPs preparation in water alone achieves chlorambucil (CHL) loading up to 17 times higher than the conventional desolvation method, largely due to the elimination of drug loss to organic solvents. CHL loaded albumin PEC NPs also decreased the cell viability (Huh-7) to 44 % within 24 h. This study demonstrates that high drug-loaded albumin NPs can be alternatively synthesized by using albumin polyelectrolyte properties, and applied in drug delivery applications.
  • Book Part
    Developments in Antimicrobial Food Packaging From Zein Incorporating Natural Active Agents
    (Elsevier, 2025) Yemenicioğlu, A.; Yemenicioğlu, Ahmet; 03.08. Department of Food Engineering; 03. Faculty of Engineering; 01. Izmir Institute of Technology
    In this chapter, the current developments in using zein for antimicrobial food packaging have been discussed with particular emphasis on incorporated natural active agents. Although zein could be incorporated with antimicrobial enzymes and peptides, incorporation of phenolic compounds, essential oils, and organic acids into zein packaging have gained a particular interest as these natural antimicrobial agents also help reducing classical brittle nature of zein films. The composites or blends of zein with lipids and fatty acids still maintain their importance as antimicrobial films having sustained release properties. However, recent developments have also addressed different benefits of using zein nanofibers, nanoparticles, and nanoemulsions in packaging. Moreover, zein has also become a promising material to obtain antimicrobial electrospun mats. This chapter discusses not only traditional antimicrobial zein films and coatings, but also recently developed zein-based antimicrobial materials. © 2025 Elsevier Inc. All rights reserved.