Comparison of convective and infrared heating as means of drying pomegranate arils (Punica granatum L.)
作者： Samia Briki , Bariza Zitouni , Besma Bechaa , Malek Amiali
DOI: 10.1007/S00231-019-02644-8
关键词:
摘要: The purpose of this study is to compare convective and infrared heating as means drying pomegranate arils. process was conducted at 50, 60 70 °C. minimal times required reach 9 ± 0.2% moisture (mass/mass) starting from 78 ± 0.2% were 510 94 min respectively for drying. Calculation aril effective diffusivity (Deff) based on Fick’s second law diffusion. At all temperatures, Deff values ranged 2.56·10–10 4.75·10–10 m2/s, 0.87·10–9 2.64·10–9 m2/s Effective found increase temperature increase. Pomegranate one the major sources polyphenolic phytochemicals. Polyphenol stability might be affected by heat treatments that are during Based maximal total polyphenol content (205 ± 0.89 mg/100 g) dried product, optimal 50 °C. This product also had an intense garnet-red color a satisfactory rehydration capacity. Various models kinetics tested conformity with results obtained in study. model best fit data modified logistic Midilli et al., than other models.
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