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Mathematical modeling of thin layer drying of Golden apples
Scopus
Toplam 217 atıf DOI
In this study, a laboratory dryer was used for thin layer apple drying process and moisture ratio at any drying time were compared by Newton, Page, Modified Page, Henderson and Pabis, logarithmic, two-term, two-term exponential, Wang and Singh, Thompson, diffusion approximation, Modified Henderson and Pabis, Verma et al. and Midilli et al. models. The effect of drying air temperature and velocity on the coefficients of the best suited moisture ratio model were determined by multiple regression method. Root mean square error (RMSE) and chi-square (χ2) were used for the determination of the best suitable model. In addition to these statistical parameter, the modeling efficiency (EF) was also determined. According to the results, Midilli et al. model is superior to the others for explaining drying behaviour of apple. It is possible to predict moisture content of the product with generalised model showing the effect of drying air temperature and velocity on the model constants and coefficients. © 2005 Elsevier Ltd. All rights reserved.
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The Effects of Drying Parameters on Drying Characteristics, Colorimetric Differences, Antioxidant Capacity and Total Phenols of Sliced Kiwifruit
Scopus
Havuzumuzda 18 atıf almış
The influence of drying parameters on drying characteristics, colorimetric differences, antioxidant capacity and total phenols of sliced kiwifruit were researched. The kiwi fruits dried between 2.6 h and 12.1 h for different drying conditions. Total phenol content of dried fruits were ranged from 2.03–2.71 mg GAE/L. Free radical scavenging activity were varied from 26.04% to 40.91%. The effect of different drying temperatures were not very effective on the total phenol content of kiwi fruits. But, the free radical scavenging activity were variable. While L* value were in the range of 51.41 and 72.90, the a* value were ranged between –8.22 and 3.47 and the b* value between 22.24 and 40.37. The most suitable model is Midilli et al. model with low RMSE, reduced chi-square and high modeling efficiency values. While the effective diffusivity ranged between 2.63 × 10–10 and 1.29 × 10–9 m2.s–1, the activation energy was between 28.51 and 34.16 kJ mol–1.
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Kurumlar (2)
Akdeniz Üniversitesi
Antalya, Turkey
Selçuk Üniversitesi
Selçuklu, Turkey