... high levels of amino acids It contains total nitrogen of 11 .9% and NaCl of 1. 4% Liver Digest Neutralized A papaic digest of liver that contains total nitrogen of 11 .0% and NaCl of 1. 6% Mycological ... digest of animal tissues It contains total nitrogen of 14 .0% and NaCl of 1. 6% Peptone P A peptic digest of fresh meat that has a high sulfur content and contains...