CONVECTIVE DRYING OF CHOKEBERRY CV. “VIKING” AND MODELING OF DRYING KINETICS

Year 2024, Volume: 49 Issue: 5, 847 - 862, 10.10.2024

Nafiye Ünal , Ahmet Süslü , Recep Külcü , Cüneyt Dinçer , Eda Elif Yavuzlar , Can Ertekin

https://doi.org/10.15237/gida.GD24019

Abstract

In this study, the effects of drying air temperatures (50, 60, 70, and 80°C) and velocities (0.5, 0.8, and 1.2 m/s) on chokeberry quality during convective drying were evaluated. The drying time decreased significantly with increasing drying air temperatures and velocities, from 2265 minutes at 50°C to 195 minutes at 80°C, and from 360 minutes at 0.5 m/s to 240 minutes at 1.2 m/s at 70°C. Higher drying air temperatures and velocities also enhanced the fruit color quality. The best antioxidant activity, anthocyanin, and phenolic content were achieved at 70°C with dryin air velocities between 0.5 m/s and 1.2 m/s. The Midilli et al. model provided the best fit for the drying kinetics, with high accuracy (R²≥0.9978, χ²≤0.0003, RMSE≤0.0161).

Keywords

Antioxidants, antioxidant capacity, black chokeberries, drying, modeling, Rosacea

ARONYANIN KONVEKTİF KURUTULMASI VE KURUTMA KİNETİĞİNİN MODELLEMESİ

Abstract

Bu çalışmada, konvektif kurutma sırasında farklı kurutma havası sıcaklıklarının (50, 60, 70 ve 80°C) ve hızlarının (0.5, 0.8 ve 1.2 m/s) aronya meyvesi kalitesi üzerindeki etkileri incelenmiştir. Artan sıcaklık ve hava hızı ile kuruma süresi önemli ölçüde azalmış; 50°C’de 2265 dakika olan süre, 80°C’de 195 dakikaya düşmüştür. 70°C’de ise 0.5 m/s’de 360 dakika olan süre, 1.2 m/s’de 240 dakikaya düşmüştür. Daha yüksek sıcaklık ve artan hava hızları meyve rengi kalitesini iyileştirmiştir. En yüksek antioksidan aktivitesi, toplam antosiyanin ve toplam fenolik içerik 70°C’de, 0.5 m/s ile 1.2 m/s hava hızları arasında elde edilmiştir. Kuruma kinetiklerinin tanımlanmasında ise Midilli ve ark. modeli yüksek doğrulukla uyum sağlamıştır (R²≥0.9978, χ²≤0.0003, RMSE≤0.0161).

Keywords

Antioksidanlar, Antioksidan kapasitesi, Siyah aronya, Kurutma, Modelleme, Rosacea

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