Comparative Studies on the Effect of Normal and Controlled Atmosphere Storage Conditions on Some Important Apple Cultivars-2

Abstract

This study was carried out on Starking Delicious, Starkrimson Delicious, Golden Delicious and Starkspur Golden Delicious, widely-grown apple cultivars of the Marmara Region, during the storage. Results indicated that one way-controlled CA condition was suitable for Golden Delicious and Starkspur Golden Delicious cultivars without any appreciable quality losses during 6 months-period of storage. However, the same system was found to be unsuitable for Starking Delicious and Starkrimson Delicious varieties due to predominating CO₂ injury and mealy breakdown disorders. Linder conditions exceeding 6 months of storage, the quality risks increased due to decreased acid content and lower flesh firmness which proposes that normal CA condition (double-gas control) is required for all the cultivars mentioned for extended storage until CO₂ gas concentrations higher than %7 has been tested for only Golden Delicious and Starkspur Golden Delicious cultivars.

Keywords

• Apple
• Normal Atmosphere
• Controlled Atmosphere
• Storage

Bazı Önemli Elma Çeşitlerinin Normal ve Kontrollü Atmosferde Depolanmaları Üzerine Karşılaştırmalı Araştırmalar-2

Abstract

Bu çalışma 1982/1983 saklama mevsiminde, Marmara bölgesinin yaygın standart çeşitlerinden Starking Delicious, Starkrimson Delicious, Golden Delicious ve Starkspur Golden Delicious çeşitleri üzerinde yürütülmüştür. Denemede tek yönlü KA (kontrollü atmosfer) yöntemiyle (%7 CO₂-%14 O₂) çift yönlü KA yönteminin (%3 CO₂-%3 O₂) anılan çeşitlerin saklama potansiyeli üzerindeki etkileri akıcı sistemde NA’le (normal atmosfer) karşılaştırmalı olarak incelenmiştir. Sonuçlar tek yönlü KA yönteminin 6 aylık saklama süresi içinde Golden Delicious ve Starkspur Golden Delicious çeşitleri için kalite riski taşımadığını göstermektedir. Ancak elmalardaki CO₂ zararı ve meyve tekstüründeki unlulaşma bu yöntemin Starking Delicious ve Starkrimson Delicious çeşitlerinde kullanılmasını engelleyen etmenler olarak görülmüştür. Saklama süresinin 6 ayı geçmesi durumunda, tek yönlü KA yönteminde meyvelerde olgunluğun hızlanmasından doğan kalite riski (asit içeriğindeki azalışlar, meyve etindeki yumuşama, vb.) artmış ve bu nedenle de uzun süreli saklama periyodunda Golden Delicious ve Starkspur Golden Delicious çeşitlerinde %7 CO₂’den daha yüksek CO₂ içeren atmosfer bileşimleri deneninceye kadar 4 çeşit içinde meyve endüstrisine çift yönlü KA yönteminin önerilmesi sonucuna varılmıştır.

Keywords

• Elma
• Normal Atmosfer
• Kontrollü Atmosfer
• Depolama

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