Mass Transfer and Solute Diffusion in Brined Cucumbers
نویسنده
چکیده
The exchange of malic acid, lactic acid, NaCl, and sugar between cucumber and cover brine was monitored over a course of 16 days for 5 sizes of cucumbers. Experimental results showed that sugar exchange between cucumbers and cover brine was the slowest. In comparison to Ficks diffusion equation, the exponential equation better described the movement of solutes during the brine fermentation of cucumbers. Diffusion coefficient of sugar was estimated to vary from 1.80 x 10-9 to 9.18 x 10-9 m2/s. Solute sorption rate from the exponential model varied from 0.0204 to 0.233 h-1 and decreased with increase in cucumber size and solute molecular weight.
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