where the drying constants k and a are determined from the slope
and intercept, respectively, of the ln(MR) vs time curve. For the Le-
wis equation, the intercept is set equal to 1. The equilibrium mois-
ture content (Me) was obtained by extending the drying time until
no measurable weight loss was observed. The air temperature and
humidity were measured by a temperature/humidity logger (Digi-
sense 91090-00, Cole-Parmer Instrument Co.)