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ALPSOY, HÜSEYİN CAN

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ALPSOY

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HÜSEYİN CAN

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    Publication
    A comparative study on chemical composition of organic versus conventional fresh and frozen tomatoes
    (Wiley, 2019-07-01) Uçurum, Özgül H.; Varis, Servet; Alpsoy, Hüseyin Can; Keskin, Merve; ALPSOY, HÜSEYİN CAN; Uludağ Üniversite; Yenişehir İbrahim Orhan Meslek Yüksekokulu; GLN-9321-2022
    In this paper, comparative study on fresh and frozen tomatoes of organic and conventionally cultivated crops was performed. Fruits of tomato cv. Rio Grande((c)) were used and stored at 18 degrees C for 12months. Quality parameters of ascorbic acid, lycopene, beta-carotene, glucose, fructose and proteins, pH, color, acidity, water-soluble solids, and elements and azoxystrobine were measured. The results showed that amount of ascorbic acid and beta-carotene were similar in organic and conventional fresh tomatoes, but lycopene was found higher in conventional ones. Na and Mg were higher in conventional samples, but P, K, Ca, and Cu were higher in organic tomatoes. Organic samples were pesticide free, however, conventional fresh and 3month stored tomatoes contained pesticides. Nitrite was not detected in any sample. These results show that organic products are healthier. Organic fresh tomatoes got the highest scores in sensory analyses.Practical applicationsTomato is one of the most consumed fruits in the world. A comparative study was performed between organic and conventionally cultivated tomato fruits, in terms of some physicochemical and secondary metabolites for measure their quality properties and also investigated of effects on storage period both of the types of tomatoes. The results showed that serious reductions were observed after 12month of storage at -18oC in fruit quality criteria and antioxidant compounds, as well as nutritional parameters. Therefore, it can be recommended that conventional and organic tomatoes should not be stored longer than 9months. Nutritive products with high yield and quality can be obtained through the optimization of controllable conditions. Further researches are needed about the effect of cultural practices such as irrigation and fertilization on the quality and nutritional value of fruit, both in organic and conventional growing systems.
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    Publication
    Effect of stationary magnetic field on seed germination and crop yield in spinach ( spinacia oleracea l.)
    (Publ House Bulgarian Acad Sci, 2019-01-01) Alpsoy, Hüseyin Can; ALPSOY, HÜSEYİN CAN; Ünal, Halil; ÜNAL, HALİL; Ziraat Fakültesi; Biyosistem Mühendisliği Bölümü; AAH-4410-2021
    This study was carried out with the aim of investigating the effects of different doses and periods of stationary magnetic field (0, 150 mT - 1 h, 150 mT - 24 h, 300 mT - 1 h, 300 mT - 24 h) on the parameters of germination percentage, germination index, mean germination time, mean time to germination, coefficient of velocity of germination, germination energy, mean daily germination, speed of germination and time to 10, 30, 50, 70 and 90% germination in the seeds of spinach cv. Matador, as well as on further plant development and yield. According to the research results, different magnetic field treatments had statistically significant effects on the germination parameters mentioned above. Magnetic field treatment of 150 mT-1 h gave the best results in general, however, the values obtained with this treatment were in the same statistical group with control values, regarding the parameters of germination percentage, germination index and mean daily germination. Plant yield was also positively affected by the same magnetic treatment in spring growing, whereas it was found ineffective in fall growing. Other magnetic field treatments (150 mT 24 h, 300 mT - 1 h and 300 mT - 24 h), generally had adverse effects on the germination parameters. As a result, it was concluded that subjecting the seeds to 150 mT stationary magnetic field for 1 h may be recommended for improving germination characteristics and the resulting yield, especially for spring-sown spinach seeds.