A THERMOANALYTICAL APPROACH TO THE STUDY OF THE TISSUTAL WATER OF MOUSE SALIVARY-GLANDS

The salivaryglands participate to a different extent when secreting the different components of saliva. The cellular water plays a very important role in this process, but studies concerned with water analysis and characterization in these organ tissues have not been reported in the literature. The different kinds of water, their percentages and their stabilities were determined by thermal analysis of mousesalivaryglands: submandibular, sublingual and parotid. The water was released from the different types of gland in different temperature ranges; the most stable being the submandibular gland, followed by the parotid gland, and then the sublingual gland. The total water per cent was approximately the same (about 72.5%) in the submandibular and sublingual glands even if bound with different energies to the matrix, but a remarkable difference was found between the water per cent corresponding to the first process of the submandibular and sublingual glands. The parotid glands showed a lower per cent (66.6%) for total water. Finally, the thermogravimetric curves were found using the same analysis, to obtain the ashes content of the glands.