Çilekte Melatonin ve Modifiye Atmosfer Paketleme (MAP) Uygulamalarının Hasat Sonrası Depolama Süresince Meyve Kalite Özellikleri Üzerine Etkisi

Öz

Çilekte melatonin ve modifiye atmosfer paketleme (MAP) uygulamalarının hasat sonrası depolamada meyve kalite özellikleri üzerine etkisini belirlemek üzere yürütülen çalışmada ticari olgunluktaki meyveler 4 gruba ayrılarak kontrol, 0.1 mM melatonin, 0.1 mM melatonin + MAP ve MAP uygulamaları olmak üzere 20 gün muhafaza edilmiştir. Depolama süresi sonunda ağırlık kaybının en düşük olduğu uygulama %0.70 ile MAP+Melatonin uygulaması olurken en yüksek kayıp ise %6.55 ile kontrol uygulaması meyvelerinden elde edilmiştir. Depolama süresinin sonunda kontrol grubu meyveleri en düşük SÇKM değerlerine sahip olmuştur. Muhafaza süresince tüm uygulamalarda TA değerleri azalış göstermiştir. Muhafazanın 20. gününde, en yüksek TA değeri Melatonin (%0.75) uygulamasında tespit edilmiştir. Muameleye tabi tutulmuş meyvelere ait L* değerleri genel olarak muhafaza süresince artış göstermiştir. Muhafaza süresinin geneline bakıldığında a* ve b* değerlerinde dalgalanmalar meydana gelmiştir. Genel olarak kontrol grubu meyvelerinde tüm zamanlarda diğer uygulamalara göre daha düşük değerler alınmıştır. Çilek meyvelerinde en fazla organik asit içeriğini sitrik asit en düşük ise süksinik asit değerleri oluşturmuştur. 20. günde Melatonin uygulaması en yüksek Malik asit değerlerine (283.85 mg 100 g-1 FW) kontrol uygulaması ise en düşük değer (211.45 mg 100 g-1 FW) sergilemiştir. Süksinik asit değerleri 4. ve 8. günde melatonin uygulamasında diğer uygulamalara göre daha yüksek sonuçlar vermiştir. Şikimik asit ve İzositrik asit olmuştur. Genel olarak Şikimik asit değerleri muhafaza süresince azalış göstermiştir. Muhafaza süresinin sonunda çilek meyvelerinde en yüksek Şikimik asit değeri 0.77 ile MAP uygulamasından tespit edilmiş olup bunu 0.63 ile MAP+Melatonin uygulaması takip etmiştir. En düşük İzositrik asit değerleri de tüm muhafaza sürelerinde kontrol uygulamasında saptanmıştır. Muhafaza süresi sonunda en fazla İzositrik asit içeriği 141.46 ile MAP+Melatoninuygulamasında tespit edilmiş bunu 116.65 ile Melatonin uygulaması takip etmiştir. Çalışma ile melatonin ve MAP uygulamalarının çilekte hasat sonrası meyve kalitesinin korunabileceği ortaya konulmuştur.

Anahtar Kelimeler

• Çilek
• MAP
• Melatonin
• Ağırlık kaybı
• Fenolik bileşikler

Destekleyen Kurum

Bu çalışma 2021 tarihinde Siirt Üniversitesi Bilimsel Araştırma Projeleri (BAP) koordinatörlüğü 2021-SİÜZİR-046 numaralı proje ile desteklenmiştir.

Proje Numarası

2021-SİÜZİR-046

Etik Beyan

Makale Hayvan ve İnsanlar üzerinde bir araştırma değildir ve bu araştırmanın yapılabilmesi için bir Etik Kurul Raporu gerekmemiştir.

Effects of Melatonin and Modified Atmosphere Packaging on Postharvest Quality and Organic Acid Composition of Strawberry Fruits

Öz

In the study conducted to determine the effects of melatonin and modified atmosphere packaging (MAP) applications on fruit quality characteristics during post-harvest storage in strawberries, commercially mature fruits were divided into 4 groups: control, 0.1 mM melatonin, 0.1 mM melatonin + MAP, and MAP applications, and stored for 20 days. At the end of the storage period, the application with the lowest weight loss was the MAP+Melatonin application with 0.70%, while the highest loss was obtained from the control application fruits with 6.55%. At the end of the storage period, the control group fruits had the lowest soluble solids content (SSC) values. TA values decreased in all treatments during the storage period. On the 20th day of storage, the highest TA value was detected in the Melatonin (0.75%) treatment. L*values of the treated fruits generally increased during the storage period. Fluctuations occurred in a* and b* values when considering to the storage period as a whole. In general, lower values were obtained in the control group fruits at all times compared to other treatments. In strawberry fruits, citric acid had the highest organic acid content, while succinic acid had the lowest. On day 20, melatonin application showed the highest malic acid values (283.85 mg 100 g-1 FW), while the control application showed the lowest value (211.45 mg 100 g-1 FW). Succinic acid values were higher on days 4 and 8 with melatonin application compared to other applications. Shikimic acid and isocitric acid were also present. In general, shikimic acid values decreased during storage. At the end of the storage period, the highest shikimic acid value in strawberry fruits was detected with MAP application at 0.77, followed by MAP+Melatonin application at 0.63. The lowest isocitric acid values were also detected in the control application at all storage periods. At the end of the storage period, the highest isocitric acid content was detected with 141.46 in MAP+Melatonin application, followed by melatonin application at 116.65. The study showed that melatonin and MAP applications can preserve post-harvest fruit quality in strawberries.

Anahtar Kelimeler

• Strawberry
• MAP
• Melatonin
• Weight loss
• Phenolic compounds

Proje Numarası

2021-SİÜZİR-046

Kaynakça

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