Y characteristics dimension y coordinate h m moisture transfer coefficient (m/s) G lag factor R 2 coefficient of determination χ 2 chi-squared parameter L characteristic dimension (half-thickness for slab, radius for cylinder) (m) z coordinate WB shrimp without boiling SB shrimp boiled in salt solution SBS shrimp boiled in salt solution and subjected to liquid smoking process Greek symbols Φ dimensionless moisture content µ 1 root of the characteristic equation Subscripts e equilibrium i initial