This study was conducted to evaluate the effect of different pretreatment methods (blanching, microwave, and pulsed electric field [PEF]) on drying and rehydration behavior of okra. Drying rates were significantly (P < 0.05) influenced by the different pretreatments. The control samples had the lowest coefficient of diffusivity while samples pretreated with PEF at maximum energy input (4 kV/cm, 500 nF) had the highest coefficient. A simple exponential model used for describing the drying behavior of okra gave moisture diffusivity values ranging between 4.56 × 10-10 and 8.05 × 10-10 m2/s and the coefficient of determination values were between 0.94 and 0.98. Rehydration capacities of the control and pretreated samples were significantly different.
|Number of pages||6|
|State||Published - 2008|
Bibliographical noteFunding Information:
The authors acknowledge the funding support of Natural Sciences and Engineering Research Council (NSERC) of Canada for the successful completion of this work. The contribution of Afekwo Mbonu toward a successful completion of this work is also acknowledged.
- PEF pretreatment
- Pulsed electric field
ASJC Scopus subject areas
- Chemical Engineering (all)
- Physical and Theoretical Chemistry