Abstract
Water diffusivity was determined for a restructured potato product undergoing deep‐fat frying. Pre‐fried product gel‐strength, expressed by its deformability modulus, varied from 37 to 127 kPa and markedly affected the effective diffusion coefficients, ranging from 3.31 to 1.58 × 10−9 m2 s−1, respectively. Pre‐ and post‐fried effective water diffusivity decreased with higher deformability modulus. Frying time reduced the effective water diffusivity only when the initial deformability modulus was higher than 52 and 79 kPa for 1 and 5 min, respectively. Oil uptake criterion was found to increase with the effective water diffusivity for frying durations of 1 and 5 min.
Published Version
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