Bazı çilek (Fragaria vesca L.) çeşitlerinde modifiye atmosferde muhafaza süresince fiziksel ve kimyasal değişimler
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Date
2014
Authors
Akın, İpek
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Journal ISSN
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Publisher
Uludağ Üniversitesi
Abstract
Çalışma, Dünyada üzümsü meyveler içerisinde üretimi ve ekonomik değeri önemli olan çilek meyvelerinde (Fragaria vesca L.), farklı modifiye atmosferde paketleme (MAP) uygulamalarının, muhafaza süresi ve kalite üzerine etkilerini araştırmak amacıyla yapılmıştır. Çalışmada Bursa-Nilüfer ilçesi Atlas Köyü'nden temin edilen 'Aromas' ve Karacabey ilçesi Yarış Köyü'nden temin edilen 'Kabarla' çilek meyveleri kullanılmıştır. Hasattan sonra meyveler kontrol grubu ve MAP grubu olarak ikiye ayrılmıştır. Kontrol grubu meyvelerine hiçbir uygulama yapılmazken, MAP grubu üç farklı geçirgenlikte (MAP-L, MAP-M, MAP-H), 25 μm, polietilen örtü ile oluşturulmuştur. Daha sonra, kontrol grubu ve MAP grubu örnekleri 0±0,5°C ve %90±5 nispi nem koşullarında 12 gün süreyle muhafaza edilmiştir. Muhafaza başlangıcında ve muhafaza süresi boyunca 3 günlük periyotlarla örnekler alınarak oda şartlarında (25°C ve %65±5 nispi nem) muhafazaya ilaveten 2 gün raf ömrü için bekletilmişlerdir. Örneklerde ağırlık kaybı, suda çözünebilir kuru madde, titre edilebilir asit, pH, askorbik asit, duyusal analizler (genel görünüm ve tat), meyve dış ve et rengi, MAP bileşimi (CO2, O2, C2H4) ve patolojik bozulma gibi kalite parametreleri incelenmiştir. Çalışma genel olarak değerlendirildiğinde, her iki çilek çeşidinin de MAP uygulamaları ile kalite özelliklerini koruyarak, 12 gün boyunca başarılı bir şekilde muhafaza edilebileceği tespit edilmiştir. 'Aromas' çilek çeşidinin 0+2. güne kadar raf ömrüne dayanarak pazarlanabilir nitelikte kalması, ancak 'Kabarla' çilek çeşidinin raf ömrüne dayanmaması da çeşit farklılığı ve önemini ortaya koymuştur.
This research was carried out to investigate the effects of different modified atmosphere packaging (MAP) applications on storage time and quality in strawberries (Fragaria vesca L.) having important production and economic values in berries in the world. Strawberries of 'Aromas' from Atla Village in Nilufer, Bursa and 'Kabarla' from Yarış Village in Karacabey, Bursa were used in this research. Strawberries were grouped into two as control and MAP groups after the harvest. While there was no application to control group, MAP was sub grouped into three different permeability (MAP-L, MAP-M, the MAP-H) with 25 µm polyethylene shield materials. There after control and MAP group samples were stored at 0±0.5°C with 90 ±5% relative humidity conditions for 12 days. Samples were taken at three day intervals and kept at room condition (25°C with 65±5% relative humidity) for storage +2 day shelf life. The strawberry samples were investigated for weight loss, soluble solids, titratable acidity, pH, ascorbic acid, sensory examination (appearance and taste), fruit and fruit flesh color, MAP composition (CO2, O2, C2H4) and quality parameters such as pathological distortion As a general evaluation of the research, it was determined that both strawberry cultivars can be stored for 12 days with the MAP applications and the cultivars could successfully preserve the quality characteristics of strawberry varieties. The importance and variations of the cultivars demonstrated that 'Aromas' strawberry cultivars could preserve marketable quality up to 0+2 day shelf life, while 'Kabarla' could not stand for shelf life.
This research was carried out to investigate the effects of different modified atmosphere packaging (MAP) applications on storage time and quality in strawberries (Fragaria vesca L.) having important production and economic values in berries in the world. Strawberries of 'Aromas' from Atla Village in Nilufer, Bursa and 'Kabarla' from Yarış Village in Karacabey, Bursa were used in this research. Strawberries were grouped into two as control and MAP groups after the harvest. While there was no application to control group, MAP was sub grouped into three different permeability (MAP-L, MAP-M, the MAP-H) with 25 µm polyethylene shield materials. There after control and MAP group samples were stored at 0±0.5°C with 90 ±5% relative humidity conditions for 12 days. Samples were taken at three day intervals and kept at room condition (25°C with 65±5% relative humidity) for storage +2 day shelf life. The strawberry samples were investigated for weight loss, soluble solids, titratable acidity, pH, ascorbic acid, sensory examination (appearance and taste), fruit and fruit flesh color, MAP composition (CO2, O2, C2H4) and quality parameters such as pathological distortion As a general evaluation of the research, it was determined that both strawberry cultivars can be stored for 12 days with the MAP applications and the cultivars could successfully preserve the quality characteristics of strawberry varieties. The importance and variations of the cultivars demonstrated that 'Aromas' strawberry cultivars could preserve marketable quality up to 0+2 day shelf life, while 'Kabarla' could not stand for shelf life.
Description
Keywords
Çilek, MAP, Polietilen, Kalite, Muhafaza, Strawberry, Polyethylene, Quality, Storage
Citation
Akın, İ. (2014). Bazı çilek (Fragaria vesca L.) çeşitlerinde modifiye atmosferde muhafaza süresince fiziksel ve kimyasal değişimler. Yayınlanmamış yüksek lisans tezi. Uludağ Üniversitesi Fen Bilimleri Enstitüsü.