Sürdürülebilir Kalkınma Amaçları

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  • MakaleYalnız künye2026Scopus SJRQ3
    Green revolution in nanotechnology: phytogenic CuO nanoparticles for biomedical and pharmaceutical applications

    Ceylan, Yusuf; Korkmaz, Nesrin; Kaçan, Fatma N.; Aydin, Ali; Korkmaz, Şengül A.; Yildirim, Ebru Ş.

    Copper oxide nanoparticles (CuO NPs) were synthesized using a green approach with Vitis vinifera L. extract, a plant rich in secondary metabolites that act as natural reducing agents. The obtained CuO NPs were characterized by XRD, EDX, and STEM analyses. FT-IR analysis revealed the presence of functional groups originating from plant biomolecules and confirmed the formation of Cu–O bonds, indicating the successful synthesis and stabilization of CuO NPs. XRD confirmed distinctive CuO diffraction peaks at 32.38°, 35.35°, 38.61°, 40.75°, 48.79°, 51.90°, 57.66°, 61.38°, 65.94°, and 75.12°. STEM imaging showed predominantly spherical, well-dispersed nanoparticles with an average size of 23–38 nm. Antibacterial analysis revealed a minimum inhibitory concentration (MIC) of 4 µg mL−1 against Escherichia coli ATCC 25922. In anticancer assays, the CuO NPs demonstrated notable cytotoxicity at both low concentrations and even at levels below the control group in A549, Calu-1, and Saos-2 cancer cell lines, highlighting their strong biomedical potential.

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  • MakaleYalnız künye2026Scopus SJRQ2
    Oxalic Acid–MAP Synergy in Maintaining Postharvest Grape Quality and Biochemical Content

    Küçüker, Emine; Ağlar, Erdal; Sümbül, Ahmet; Demir, Selda; Özcengiz, Ceyda Kizgin; Güzel, Sedat

    This study was conducted to investigate the effects of oxalic acid (OA) and modified atmosphere packaging (MAP) applications, both alone and in combination, on the preservation of postharvest quality characteristics of grapes. All samples were stored at 4 ± 1 °C and approximately 80–85% relative humidity for 28 days. The OA + MAP treatment most effectively limited weight loss (10.49%), soluble solids content (SSC; 20.62°Bx), and decay rate (1.78%), while providing the best preservation of total phenolic content (68.25% change), antioxidant activity (53.19% change), and individual phenolic compounds at the end of the storage period. A decrease in color parameters, including L* and a* values, was observed, with OA treatment particularly prominent in preserving the red color. Principal component analysis and hierarchical heatmap analysis confirmed distinct clustering of treatments from the control, highlighting the process efficiency of packaging-based interventions. The combination of OA and MAP treatments was more effective than either treatment alone in reducing quality losses in grapes during storage. Therefore, the widespread use of OA + MAP in commercial storage and marketing processes is recommended.

    • SDG 2 · Açlığa Son
    • SDG 12 · Sorumlu Üretim ve Tüketim
  • MakaleYayıncıda açık erişim2023Scopus SJRQ3
    Vitamin content and MDA levels of certain white grape varieties from different altitudes in Turkey

    Akbaba, Emel; Aydın, Sevinç; Sanyürek, Nesrin Karaca; Çakır, Atilla; Erişir, Figen Erdem

    Grapevine (Vitis vinifera L.) is regarded as one of the world’s most important fruit crops in terms of acreage and commercial worth. Grapes are used to make not only wine but also fresh fruit, dried fruit, and juice. The quality of grapes or wine is significantly affected by environmental factors such as altitude, soil type, and climate. In this study, the 5 white grape varieties (Ağın beyazı, Tahannebi, Kabarcık, Şilfoni, and Besni) grown at different altitudes (800 m, 1000 m and 1200 m) in Turkey were investigated for their vitamin, and phytosterol concentrations as well as lipid peroxidation content. Şilfoni grape harvested at 800 m was found to possess the lowest lipid peroxidation content. High altitudes, were found to reduce lipid peroxidation contents in the Ağın beyazı, Tahannebi, and Kabarcık strains. The highest stigmasterol (98.34 μg/g), and beta-sitosterol (86.90 μg/g) concentrations were found within Şilfoni grape variety harvested at 800 m. The highest vitamin D-2 and D-3 levels were found in Ağın beyazı (1.39 μg/g) and Kabarcık (4.13 μg/g) grape varieties, both harvested at 1200 m. Kabarcık grape, however, revealed the highest concentrations of R-tocopherol (63.09 μg/g) and alpha-tocopherol (24.13 μg/g) at 1200 m within the samples. The highest vitamin K-2 level was determined within the Tahannebi grape (15.44 μg/g) from 1200 m. It was observed that the vitamin and phytosterol concentrations of white grape varieties tended to increase, while the lipid peroxidation values tended to decrease at high altitudes, especially at 1200 m. This study also exhibited a strong relationship among Vitamin D3, R-tocopherol, and alpha-tocopherol in the studied white grape cultivars.

    • SDG 2 · Açlığa Son
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