Cereal Chem 56:321 - 323.  |  VIEW ARTICLE
Sorption and Desorption Kinetics of Carbon Tetrachloride Vapor on Wheat Kernels.

C. C. Chang and B. G. Kyle. Copyright 1979 by the American Association of Cereal Chemists, Inc. 

Kinetic data for the sorption and desorption of carbon tetrachloride vapor on wheat kernels containing 12% moisture have been obtained at 86 F. Both whole kernels and pearled kernels were studied. In all cases an internal diffusion model adequately represented the data; however, with whole kernels the diffusivity for desorption was found to be approximately one-third that found for the sorption process. The data for pearled wheat produced essentially equal diffusivities for the sorption and desorption processes. A seed coat resistance mechanism is used to explain these results.