2.2. Hydratation of samples
All standards and lyophilised polysaccharides were kept
over phosphorus pentoxide and their infrared spectra were
collected. This collection had been equilibrated at 25 8C and
relative humidity of air 96% in a desiccator for 72 h. The
samples were labelled as ‘hydrated’ and their infrared spectra
were acquired. Then, to each sample, a few drops of water were
added and the saturated solution or gel was created. These
samples were labelled as ‘solution’ and their infrared spectra
were collected. The water content of saccharides in dry and
hydrated states is presented in Table 1.