Availability of Amino Acids in Some Foods

Abstract
It was found that all 10 of the essential amino acids in roast beef are completely available to the rat. Wide variations occurred in the availability of the individual amino acids in cottonseed flour. Lysine in this protein source was only 65% available. The corresponding value for arginine in the same sample was 93%. The availability of each of the essential amino acids in wheat and peanut flour was found to be relatively high. For wheat the values ranged from 92.2 to 98.8%, and for peanut flour from 94.8 to 99.5%.