Question Statement:
Thin-layer drying of shelled corn follows Page's empirical kinetic equation: $MR = \frac{M - M_e}{M_0 - M_e} = \exp(-k t^n)$, where $M$, $M_0$, and $M_e$ are instantaneous, initial, and equilibrium moisture contents ($\text{kg/kg db}$), respectively, and $t$ is drying time in minutes. Given $M_0 = 0.24\text{ kg/kg db}$, $M_e = 0.10\text{ kg/kg db}$, drying parameter $k = 0.035\text{ min}^{-n}$, and exponent $n = 0.82$. The drying time required to reduce the corn moisture content to $M = 0.12\text{ kg/kg db}$ is ________ minutes (round off to one decimal place).