Optimization of ultrasound-assisted osmotic dehydration of pomegranate seeds (Punica granatum L.) using response surface methodology
23 июня 2021 года
14:48
Optimization of ultrasound-assisted osmotic dehydration of pomegranate seeds (Punica granatum L.) using response surface methodology
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Title: Optimization of ultrasound-assisted osmotic dehydration of pomegranate seeds (Punica granatum L.) using response surface methodology
Author, co-author: Bchir, B.; Bouaziz, M. A.; Ettaib, R.; Sebii, H.; Danthine, Sabine; Blecker, Christophe; Besbes, S.; Attia, H.
Abstract: The main objective was to investigate the effect of ultrasound-assisted osmotic dehydration (UOD) pretreatment on the dehydration kinetics and the physicochemical properties of pomegranate seeds using a response surface methodology, in order to optimize the process. Quality attributes of seeds were estimated through the assessment of physical and thermal characteristics. Results showed a good correlation of experimental values with the model. The optimum conditions used for UOD and osmotic dehydration (OD) were found to be 240 min, 60°Brix, 41°C, and 240 min, 29°Brix, 50°C, respectively. UOD pretreatment led to a higher mass transfer rate than the OD process. UOD-treated seeds reached the optimal moisture content (10%) and water activity (aw 

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Optimization of ultrasound-assisted osmotic dehydration of pomegranate seeds (Punica granatum L.) using response surface methodology
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[en] Dehydration ; Differential scanning calorimetry ; Drying ; Food preservation ; Physicochemical properties ; Plants (botany) ; Surface properties ; Ultrasonics ; X ray powder diffraction ; Antioxidant properties ; Bioactive compounds ; Dehydration kinetics ; Experimental values ; Pretreatment methods ; Response surface methodology ; Thermal characteristics ; Ultrasound pre treatments ; Osmosis
Abstract :
[en] The main objective was to investigate the effect of ultrasound-assisted osmotic dehydration (UOD) pretreatment on the dehydration kinetics and the physicochemical properties of pomegranate seeds using a response surface methodology, in order to optimize the process. Quality attributes of seeds were estimated through the assessment of physical and thermal characteristics. Results showed a good correlation of experimental values with the model. The optimum conditions used for UOD and osmotic dehydration (OD) were found to be 240 min, 60°Brix, 41°C, and 240 min, 29°Brix, 50°C, respectively. UOD pretreatment led to a higher mass transfer rate than the OD process. UOD-treated seeds reached the optimal moisture content (10%) and water activity (aw 
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