If the biological quality of the protein is lower than that of casein, the minimum amount of protein increases proportionally to compensate for the lower biological quality. Note: If you need help accessing information in different file formats, please refer to the Download Guide for Viewer and Reader. 2Needed only for infant formulas other than milk formula. The information on this page is current as of 1 April 2018. Subsection D – Nutritional requirements Article 107. 100 Nutritional specifications. 50 FR 45108, Oct.