However, they were located underneath the CS adsorption isotherms.
This result shows that added CO had an effect on the adsorption behavior of CS, probably due to some interactions
between CS and CO of the hydrophobic–hydrophilic type as will be discussed below.
Transformation of the samples at high temperature and pressure favored these interactions.
Although water cannot be adsorbed by CO, this later component could block the water sorption sites of CS leading to a decreased moisture content of the CS–CO blends as compared to CS, particularly for aw values greater than 0.7 (Fig. 1c and d).