In humans, endogenous sources of glutamine include those from waste urea nitrogen.
Donors also are screened for disease risk factors using a health history questionnaire.
The results of the studies described below support this conclusion.
These changes were minimal in animals at 2 and 4 ppm.
More urinary metabolites were recovered than had been administered in the studies with unlabelled substance, indicating that the test material was not completely eliminated before oral administration.
Production volumes and intake values for each flavouring agent in this group are reported in Table 2, which also gives the available information on natural occurrence.