Rehydration Kinetics of Sun-Dried Eggplants (Solanum melongena L.) at Different Temperatures

Year 2018, Volume: 16 Issue: 3, 257 - 263, 29.10.2018

Engin Demiray , Yahya Tülek

https://doi.org/10.24323/akademik-gida.474923

Cited By: 3

Abstract

In this study,
sun-dried eggplant samples were rehydrated at three different rehydration water
temperatures (25, 35 and 45°C) and the effect of rehydration kinetics were determined.
Four different models were used to model the rehydration behaviors of sun-dried
eggplants, and non-linear regression analysis were performed to obtain the
model that gives the best fit to experimental data. The coefficients of models
were calculated. According to regression analysis, Peleg model gave a better
fit for all rehydration conditions applied. Additionally, the effective
diffusivities were between 3.21×10^-8 and 4.06×10^-8 m²
s^-1. Rehydration water temperature influenced rehydration rates, and
moisture uptake of samples was faster at high temperatures.

Keywords

Eggplant, Sun drying, Rehydration, Kinetics, Peleg model

Güneşte Kurutulmuş Patlıcanların (Solanum melongena L.) Farklı Sıcaklıklardaki Rehidrasyon Kinetiği

Abstract

Çalışmada, güneşte kurutulmuş patlıcan
örneklerinin rehidrasyonunda, üç farklı rehidrasyon suyu sıcaklığının (25, 35
ve 45°C) rehidrasyon kinetiğine etkisi incelenmiştir. Dört farklı modelle,
rehidrasyonda elde edilen deneysel sonuçların uygunluğu doğrusal olmayan
regresyon analizi uygulanarak karşılaştırılmış ve modellere ait katsayılar
hesaplanmıştır. Deneysel sonuçlara en iyi uyum gösteren modelin Peleg modeli
olduğu belirlenmiştir. Çalışmada ayrıca efektif difüzivite katsayıları da
belirlenmiş ve 3.21×10^-8- 4.06×10^-8 m² s^-1
değerleri arasında hesaplanmıştır. Yüksek sıcaklıkta yapılan rehidrasyon işleminde
nem kazanımının daha hızlı olduğu belirlenmiştir.

Keywords

Patlıcan, Güneşte kurutma, Rehidrasyon, Kinetik, Peleg modeli

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