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Browsing by Author "Aşkin, M.A."

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    Article
    Phenolic Profiles of Currant (Ribes Spp.) Cultivars
    (Centenary University, 2017) Okatan, V.; Gündoğdu, M.; Güçlü, S.F.; Çelıkay Özaydin, A.; Çolak, A.M.; Korkmaz, N.; Aşkin, M.A.
    The present work aimed the study of rutin, protocatechuic, catechin, p- hydroxy benzoic, chlorogenic, caffeic, kuersetin, luteolin, kamferol, p-coumaric, vanilin and ferulic acids composition in different currant varieties in Turkey. Red and black currant varieties (Goliath, Red Lake, Rovada, Rosenthal, and Booskop Giant) were analyzed for phenolic acids by using reversed-phase high performance liquid chromatography (HPLC). Results showed that p-coumaric acid (1.66-0.04 µg g-1) was the predominant phenolic acid extracted from currant varieties. In addition, other acids, namely rutin (35.41-7.23 µg g-1), Protocatechuic (3.28-2.84 µg g-1), Chlorogenic (65.49-2.38 µg g-1), and kuersetin acids (2.29-1.50 µg g-1) were obtained in extracts from currant fruit. © 2017, Centenary University. All rights reserved.
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    Article
    Studies on the Storage of Some Walnut Types Grown Around Van Lake
    (TUBITAK, 1999) Koyuncu, M.A.; Aşkin, M.A.
    In this study, some walnut types were stored in different conditions and packaging materials such as unshelled and shelled and investigated the quality variations during their storage. Our experiments showed that the most suitable conditions for walnut storage are at 0°C and 5°C and 55-65 % of relative humidity. The polyethylene bags used as a packaging are more suitable than synthetic woven and cloth bags for unshelled walnuts. Least quality losses occured on vacum bags in shelled walnuts during storage. Unshelled walnuts were stored in more quality and for longer time than shelled walnuts.When the storage temperature was increased, the quality losses increased especially the content of free fatty acids. Our investigations showed that it could be stored 18 months for unshelled walnuts and 10-12 months for shelled walnuts at between 0°C and +5°C and at 55-65% relative humidity. © 1999, TUBITAK. All rights reserved.