Abstract
ABSTRACT The effect of ultrasonic (US) pre-treatment on the drying characteristics of Loligo vulgaris (European squid) was investigated in oven and vacuum oven. In each method, effective moisture diffusivities (Deff ) and activation energies (Ea ) were determined. According to mathematical modeling with fifteen models, the Midilli and Kucuk model best fit the oven and US vacuum oven; Alibas and parabolic best fit the vacuum oven and US oven, respectively. Deff values were found to be between 0.612–1.84 × 10−10 m2/s. Vacuum increased the Ea values, and the highest Ea was found as 47.67 kJ/mol with vacuum oven. The lowest ΔE value was obtained with the US vacuum oven. As a result, it was observed that US pretreatment was beneficial in color protection while increasing the drying time, whereas vacuum shortened the drying time and was effective in color protection.
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