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Title: Effect of power ultrasound pretreatment on edamame prior to freeze drying
Authors: Xu, H.S.
Zhang, M.
Duan, X.
Mujumdar, A. 
Sun, J.
Keywords: Edamame
Freeze-drying pretreatment
Immersion freezing
Power ultrasound
Issue Date: 2009
Citation: Xu, H.S., Zhang, M., Duan, X., Mujumdar, A., Sun, J. (2009). Effect of power ultrasound pretreatment on edamame prior to freeze drying. Drying Technology 27 (2) : 186-193. ScholarBank@NUS Repository.
Abstract: Immersion freezing with the aid of power ultrasound prior to freeze drying of edamame was investigated. The effect of power ultrasound on the freezing rate was influenced by ultrasonic power, exposure time to ultrasound field, and the pulse duration of the ultrasound that was applied. The higher the ultrasound power and the longer the exposure time, the stronger the ultrasonication effect on edamame was. However, the ultrasound power, ultrasound intermittency, and exposure time need to be chosen with consideration of the thermal effect of ultrasound. Response surface methodology (RSM) was adopted for optimization. The hardness and the water-holding capacity of edamame after thawing were 6050 g and 92%, respectively, when 58-W ultrasound power was applied for 0.7 min, 50% pulsed at the coolant temperature of - 20°C.
Source Title: Drying Technology
ISSN: 07373937
DOI: 10.1080/07373930802603342
Appears in Collections:Staff Publications

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