Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Karbancioglu-Guler, Funda(2)
- Oztekin, Sebahat(2)
- Acar, Emine Gizem(1)
- Alp, Hakan(1)
- Arıcı, Faruk(1)
- Bayram, Sinan(1)
- Başoʇlu, Aysel(1)
- Bufon, Carlos C. B.(1)
- Cengiz, Ekrem(1)
- Devecioglu, Dilara(1)
- Dikmetas, Dilara Nur(1)
- Duran, Celal(1)
- Graeff, Carlos F. O.(1)
- Gundogdu, Ali(1)
- Imamoglu, Mustafa(1)
- Ocak, Miraç(1)
- Ocak, Ümmühan(1)
- Ozdes, Duygu(1)
- Paulin, João V.(1)
- Senturk, H. Basri(1)
- Serencam, Huseyin(1)
- Soylak, Mustafa(1)
- Tosun, Gonca(1)
- Yayli, Nurettin(1)
Yayınlar
- MakaleYalnız künye2024Scopus SJRQ2Middle School Fifth-Grade Students’ Level of Understanding the Concept of Condensation in Different Contexts
Cengiz, Ekrem; Arıcı, Faruk
Evaporation, condensation, and boiling are fundamental concepts taught in science and chemistry classes, closely linked to daily life. These concepts are vital for students to grasp the transformation and conservation of matter, the particulate nature of matter, and related principles. This study evaluated fifth-grade students’ comprehension of condensation across various contexts. The research involved 80 male and 59 female students from a public school in a qualitative phenomenological study. Data analysis utilized the content analysis method. As a result of the study, it was revealed that the students who participated in the research did not understand the concept of condensation sufficiently and could not explain this concept at the desired level in different contexts. Based on the findings, incorporating real-life contexts when teaching the concept of condensation can enhance the understanding of the topic. Moreover, it highlights the significance of an investigative approach to learning new concepts.
AtıfScopus1WoS1OpenAlex2
İncele - Derleme MakaleAçık Erişim2023Scopus SJRQ1Recent Insights into the Use of Antagonistic Yeasts for Sustainable Biomanagement of Postharvest Pathogenic and Mycotoxigenic Fungi in Fruits with Their Prevention Strategies against Mycotoxins
Oztekin, Sebahat; Dikmetas, Dilara Nur; Devecioglu, Dilara; Acar, Emine Gizem; Karbancioglu-Guler, Funda
Fungi-induced postharvest diseases are the leading causes of food loss and waste. In this context, fruit decay can be directly attributed to phytopathogenic and/or mycotoxin-producing fungi. The U.N. Sustainable Development Goals aim to end hunger by 2030 by improving food security, sustainable agriculture, and food production systems. Antagonistic yeasts are one of the methods presented to achieve these goals. Unlike physical and chemical methods, harnessing antagonistic yeasts as a biological method controls the decay caused by fungi and adsorbs and/or degrades mycotoxins sustainably. Therefore, antagonistic yeasts and their antifungal mechanisms have gained importance. Additionally, mycotoxins’ biodetoxification is carried out due to the occurrence of mycotoxin-producing fungal species in fruits. Combinations with processes and agents have been investigated to increase antagonistic yeasts’ efficiency. Therefore, this review provides a comprehensive summary of studies on preventing phytopathogenic and mycotoxigenic fungi and their mycotoxins in fruits, as well as biocontrolling and biodetoxification mechanisms.
AtıfScopus75WoS62OpenAlex74
İncele - MakaleAçık Erişim2023Scopus SJRQ1Exploring the Charge Transport of a Natural Eumelanin for Sustainable Technologies
Paulin, João V.; Bayram, Sinan; Graeff, Carlos F. O.; Bufon, Carlos C. B.
Eumelanin, the main quinone-based biomaterial of the melanin family of compounds, is emerging as a model for medical and sustainable electronic interfaces due to its biocompatibility, biodegradability, and transducing abilities. The study utilizes current-voltage measurements and impedance/dielectric spectroscopy under a controlled hydration atmosphere to investigate the charge transport of eumelanin produced from the S. parvus BSB49 strain. We show no differences in the electrical response in highly hydrated conditions compared to the standard synthetic eumelanin. Hence, our findings provide the groundwork to assess the potential use of this natural eumelanin in sustainable organic (bio)electronic applications.
AtıfScopus13WoS14OpenAlex16İncele - MakaleAçık Erişim2022Scopus SJRQ1Simultaneous Detection of Ochratoxin A and Aflatoxins in Industrial and Traditional Red and isot Pepper Flakes along with Dietary Exposure Risk Assessment
Oztekin, Sebahat; Karbancioglu-Guler, Funda
This study focused on the co-occurrence of aflatoxins (AFs) and ochratoxin A (OTA) in traditionally and industrially dried red pepper flakes (DRPFs) and isot pepper flakes (IPFs). Following the multitoxin immunoaffinity column (IAC) clean-up, high-performance liquid chromatography coupled with fluorescence detection (HPLC-FLD) was used to quantify AFs and OTA. The limit of detection (LOD) and limit of quantification (LOQ) values were 0.11 and 0.18 μg kg-1(AFB1), 0.04 and 0.08 μg kg-1(AFB2), 0.13 and 0.18 μg kg-1(AFG1), 0.04 and 0.11 μg kg-1(AFG2), and 0.10 and 0.21 μg kg-1(OTA), respectively. AFB1,AFB2, AFG1, and OTA were found to be positive in 93, 74, 17, and 94% of all samples, respectively. The contamination levels in positive samples ranged from 0.23 to 38.69, 0.04 to 2.14, 0.13 to 0.88, and 0.18 to 52.19 μg kg-1for AFB1, AFB2, AFG1, and OTA, respectively, while no AFG2was found above the detection limit (0.04 μg kg-1). None of the industrial isot peppers exceeded the European Union limits, while the levels of AFB1(5 μg kg-1), total AFs (10 μg kg-1), and OTA (20 μg kg-1) of the traditional peppers were above the limit by 30% (16/54), 26% (14/54), and 4% (2/54), respectively. Co-occurrence of AFB1-AFB2-OTA was the most frequent, accounting for 54% (29/54) of all samples. At the upper bound (UB), estimated average exposure to AFB1, total AFs, and OTA was determined to be 0.175, 0.189, and 0.124 ng kg-1bw day-1in all samples, respectively. The margin of exposure (MoE) value of AFB1and total AFs was found to be 977 and 909, indicating high health concerns compared to OTA (MoE >10,000). AFB1and total AFs may result in 0.0058 and 0.0062 liver cancer cases/100,000 person/year at UB, respectively, and weekly OTA exposure was 0.868 ng kg-1bw, well below the provisional tolerable weekly intake, hence not of health concern. AFs exposure could endanger health, whereas OTA posed no toxicological concerns through dried red pepper consumption.
AtıfScopus17WoS17OpenAlex15İncele - MakaleYalnız künye2015Scopus SJRQ1Simple time-saving method for iron determination based on fluorescence quenching of an azaflavanon-3-ol compound
Başoʇlu, Aysel; Tosun, Gonca; Ocak, Miraç; Alp, Hakan; Yayli, Nurettin; Ocak, Ümmühan
A simple and time-saving spectrofluorometric method developed using an azaflavanon-3-ol compound was used for the determination of iron in various food samples. Nitric acid and hydrogen peroxide were used for digestion of samples in a closed microwave system. The method was validated by analyzing two certified reference materials (CRM-SA-C Sandy Soil C and Mixed Polish Herbs INCT-MPH-2). Measurements were carried out using a modified standard addition method. The standard addition graph was linear until 21.6 mg/L in the determination of iron(III). Detection and quantification limits were 0.81 and 2.4 mg/L, respectively. Satisfactory accuracy was obtained for spinach, dill, mint, purslane, rocket, red lentils, dry beans, and two iron medicinal tablets. High recoveries were found for streamwater samples fortified at three different concentrations. The method is simple, time-saving, cost-effective, and suitable for the determination of the iron content of foods.
AtıfScopus22WoS19OpenAlex21İncele - MakaleYalnız künye2012Scopus SJRQ1Adsorption of phenol from aqueous solution on a low-cost activated carbon produced from tea industry waste: Equilibrium, kinetic, and thermodynamic study
Gundogdu, Ali; Duran, Celal; Senturk, H. Basri; Soylak, Mustafa; Ozdes, Duygu; Serencam, Huseyin; Imamoglu, Mustafa
The ability of activated carbon which was produced by chemical activation using zinc chloride from tea industry wastes (TIWAC) to adsorb phenol molecules from aqueous solution was tested by equilibrium, kinetic, and thermodynamic parameters. Phenol adsorption on TIWAC took place with a high yield at pH values in the range 4 to 8. The optimum contact period was observed as 4.0 h and from the adsorption graphs plotted as a function of time; it was established that phenol adsorption on TIWAC conformed more to a pseudosecond-order kinetic model. Additionally, it was determined that the adsorption rate is controlled by intraparticle diffusion as well as film diffusion. It was established that phenol adsorption on TIWAC can be better defined by the Langmuir adsorption model and its adsorption capacity was 142.9 mg·g-1 from the linear Langmuir equation. Temperature had an adverse effect on adsorption yield, and hence, the adsorption process was exothermic in our case. Moreover, increasing electrolyte concentration in the medium has a positive effect on adsorption yield. From the data obtained, it was concluded that the removal of phenol from aqueous solution by TIWAC produced from tea industry wastes with a very low cost took place with an extremely high performance.
AtıfScopus228WoS212OpenAlex222İncele - DergiJournal of Chemical and Engineering Data
- DergiACS Omega
- DergiJournal of Chemical Education
- DergiJournal of Agricultural and Food Chemistry
- DergiACS Applied Bio Materials