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    Application of MOFs and natural clays for removal of MCPD and GEs from edible oils
    (Consejo Superior Investigaciones Cientificas-Csic, 2022) Sahin, T.; Ok, S.; Yilmaz, E.
    The aim of this study was to investigate the removal of 3-monochloropropane-1,2-diol (3-MCPD) and glycidyl esters (GEs) from edible oils by using Metal Organic Frameworks (MOF) and natural clays. First, the model oil was treated with adsorbents and titanium (IV) butoxide-terephthalate MOF (Ti-MOF) and kaolin were selected as the best performing MOF along with natural clay, respectively, for the removal of 3-MCPD and GEs. The effects of treatment conditions were also investigated, 6.0% adsorbent level, 120 min treatment time and 95 degrees C temperature were determined to be the best treatment parameters. Finally, palm oil samples were treated with Ti-MOF and kaolin under the selected conditions and removal of 3-MCPD and GEs was obtained at up to 27% and 58%, respectively. In conclusion, MOFs and natural clays showed good potential for the removal of 3-MCPD and GEs, and the efficiency of the treatment can be improved by modifying the adsorbents.
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    Öğe
    THE EFFECT OF COVID-19 PANDEMIC ON TURKISH WELL TRAINED CYCLIST'S PRE-COMPETITION ANXIETY LEVEL
    (South Ural State Univ, Scientific Research Dept, 2022) Akgonul, E. Kurkcu; Sahin, T.; Ozen, G.
    Aim. The aim of this study is to examine national team level Turkish cyclist's pre competition anxiety level before and after the COVID-19 pandemic. Materials and methods. Study held on the Turkish cyclists who is racing in international level. A total of 31 riders with mean age 18.25 +/- 1.87; length 169.45 +/- 7.73 cm and weight 61.18 +/- 6.59 kg. In the study, the Turkish version of the Sport Competition Anxiety Test-SCAT developed by Rainer Martens in 1977 was used. The one-way analysis of variance (ANOVA) was performed to determine the difference between the socio-demographic characteristics and SCAT scores of cyclist. Statistical significance was accepted as p <.05. Results. According to the findings, there is small difference between the anxiety scores of the cyclists before and after the pandemic, but it was no significant. It was concluded that the pandemic process did not statistically increase the anxiety of cyclists. In addition, it was found that there was no significant difference between the pre competition anxiety levels before and after the pandemic in terms of gender, category, economic level, education level, mother's education level, place of residence variables and specialty. Conclusion. As a result, it was found that the COVID-19 pandemic did not have a significant effect on the racing anxiety of well-trained cyclists. This result shows that the competition anxiety level of experienced athletes who have been cycling for at least 6 years and the passivity during the five-six-month pandemic period do not affect the competition anxiety levels of the athletes. However, considering the possibility of prolongation of the pandemic process, research on this issue should continue in the long term.