Liver and yeast extracts were assayed satisfactory and the niacine added was recovered quantitatively.doi:10.1590/S0074-02761945000100013VillelaGilberto G.HargreavesAlberto BInstituto Oswaldo Cruz, Ministério da Saúde
A small decrease in the amount of B group vitamins was observed during the shelf life of the products. In the case of vitamin C this decrease was slightly higher. The present research shows the need of increased quality control and inspection....