Hasat sonrasi kitosan uygulamalarinin depo koşullarindaki patatesin bazi kimyasal değişimleri üzerine etkisi

Öz

Amaç: Bu çalışmanın amacı; kitosan uygulamasının patateste kuru madde oranı, C vitamin içeriği, toplam suda çözünür kuru madde oranı, toplam fenolik madde içeriği ve toplam antioksidan içeriği gibi bazı kimyasal özellikler üzerindeki etkisinin belirlenmesidir. Materyal ve Yöntem: Soğuk hava deposunda gerçekleştirilen bu araştırmada, depolama öncesi patates yumrularına 4 doz (kontrol, %0.5, %1 ve %2) kitosan, püskürtme yöntemiyle uygulanmıştır. Bulgular: Kitosan uygulamaları arasında %1 kitosan dozu, depolama sırasında kuru madde oranı artışını (%50) ve C vitamini içeriğinin azalışını (yaklaşık %40) önleme açısından en etkili olan doz olarak belirlenmiştir. Toplam fenolik bileşiklerin depolama sonunda kontrole göre %20 artması kitosan uygulamaları ile önlenmiştir.
Sonuçlar: Sonuçlar, kitosan uygulamasının, depolama sırasında patateslerde meydana gelen bazı kimyasal değişiklikleri azaltabileceğini göstermektedir.

Anahtar Kelimeler

• Biyoaktif Bileşikler
• C vitamini
• Solanum tuberosum L.

The effect of post-harvest chitosan applications on some chemical changes of potatoes during storage

Abstract

Objective: The objective of this study was determination of effects of the chitosan application on changes at some chemical properties of potatoes such as dry matter rate, C vitamin amount, total soluble solids rates, total phenolic compounds and total antioxidant capacity. Material and Method: In this research carried out in cold storage, 4 doses (control, 0.5%, 1% and 2%) of chitosan were applied to potato tubers by spraying method before storage. Results: Among chitosan treatments, 1 % treatment was most effective in terms of preventing the increase dry matter rate (by 50%) and the decrease C vitamin content (by approximately 40%) during the storage. The increase of total phenolic compounds by 20% at the end of storage was prevented with chitosan applications compared to control. Conclusion: Results show that the application of chitosan can reduce some chemical changes that occur in potatoes during storage.

Keywords

• Bioactive compounds
• C vitamin
• Solanum tuberosum L.

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