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  • Küçük Resim
    Öğe
    Effects of modified atmosphere packaging and ethanol vapor treatment on the chemical composition of 'Red Globe' table grapes during storage
    (Elsevier, 2012) Ustun, Durmus; Candir, Elif; Ozdemir, Ahmet Erhan; Kamiloglu, Onder; Soylu, Emine Mine; Dilbaz, Ramazan
    The sugar, organic acid, and anthocyanin contents and antioxidant capacity of 'Red Globe' table grapes packaged in perforated polyethylene (PPE) or ZOEpac modified atmosphere packaging (MAP) bags, with or without different grades of ethanol vapor-generating sachets (Antimold (R) 30, Antimold (R) 60 or Antimold (R) 80) or an SO2-generating pad, were evaluated during 3 months of storage at 0 degrees C. Fructose, glucose, malic, and tartaric acid contents remained unchanged in grapes packaged in PPE or ZOEpac bags containing an SO2-generating pad throughout storage. In grapes packaged in PPE or ZOEpac bags with or without Antimold (R) sachets, fructose, glucose, and malic acid contents decreased whereas tartaric acid content increased during storage due to a higher incidence of fungal decay as compared to SO2 treatments. Citric acid content decreased in all treatments during storage. Anthocyanin content increased in the first 2 months of storage and then decreased by the end of storage. An Antimold (R) 80 sachet added to ZOEpac bags resulted in higher anthocyanin content, ferric-reducing antioxidant power (FRAP) and trolox equivalent antioxidant capacity (TEAC) during storage. (C) 2012 Elsevier B.V. All rights reserved.
  • Küçük Resim
    Öğe
    Farklı derim sonrası uygulamaların Red Globe üzüm çeşidi muhafazasına etkileri
    (2005) Özkaya, Okan; Dündar, Ömür; Özdemir, Ahmet Erhan; Dilbaz, Ramazan
    Bu çalışmada deneme materyali olarak, Tarsus-Yenice koşullarında yetiştirilen ülkemiz yeni üzüm çeşitlerinden Red Globe çeşidi Kullanılmıştır. Derimi yapılan üzümlerde ön ayıklamadan hemen sonra, a) 0.05 mm kalınlığında polietilen torbaya alınmış ve zorlanmış hava akımlı önsoğutma uygulanmış, b) 0.05 mm kalınlığında polietilen torbaya alınmış, üzerine sodyum metabisülfıt pedi yerleştirilmiş ve zorlanmış hava akımlı önsoğutma uygulanmış, c) %35'lik etanol + %2'lik sitrik asit çözeltisine 1 dakika daldırılmış, 0.05 mm kalınlığında polietilen torbaya alınmış ve zorlanmış hava akımlı önsoğutma uygulanmış olmak üzere üç farklı uygulama yapılmıştır. Uygulamalardan hemen sonra karton kutulara yerleştirilen üzümler 0 °C, %90-95 oransal nem koşullarında 4 ay muhafaza edilmiştir. Araştırma sonucunda Red Globe üzüm çeşidinin uygulamalarla 2 ay başarılı şekilde muhafaza edilebileceği bulunmuştur.
  • Küçük Resim
    Öğe
    Modified atmosphere packaging and ethanol vapor to control decay of 'Red Globe' table grapes during storage
    (Elsevier Science Bv, 2012) Candir, Elif; Ozdemir, Ahmet Erhan; Kamiloglu, Under; Soylu, Emine Mine; Dilbaz, Ramazan; Ustun, Durmus
    The aim of this study was to determine the efficacy of several alternative postharvest treatments to sulfur dioxide (SO(2)) in maintaining quality and reducing fungal decay during cold storage of 'Red Globe' table grapes. Grapes were packaged in perforated polyethylene (PPE) or modified atmosphere packaging (MAP) bags (ZOEpac or Antimicrobial) with or without different grades of ethanol vapor-generating sachets (Antimold (R) 30. Antimold (R) 60 or Antimold (R) 80) or a SO(2)-generating pad, and the grapes were kept at 0 degrees C and 90-95% relative humidity for 4 months. Packaging of grapes with a SO(2) pad in PPE or ZOEpac bags provided better control of fungal decay and stem browning than PPE or ZOEpac bags alone, PPE or ZOEpac bags with Antimold sachets or Antimicrobial bags alone. The PPE bag containing the Antimold (R) 80 sachet was as effective as the SO(2) treatments in reducing the incidence of fungal decay in naturally infected and artificially inoculated grapes for 1 month. Ethanol vapor released by the Antimold sachets enhanced berry color, but caused stem browning depending on ethanol vapor concentrations in the headspace of the bags. The ZOEpac-210 bags alone resulted in significantly lower weight loss and incidence of stem browning, compared to other treatments: however, they did not reduce fungal decay or develop an appreciable level of modified atmosphere. (C) 2011 Elsevier B.V. All rights reserved.