FIGURE 1.

Mean AA composition of the WPI and PBI protein ingredients used to prepare the test solutions as measured in duplicate. PBI, protein-based ingredient; WPI, whey protein isolate; Asx, sum of Asp and Asn; Glx, sum of Glu and Gln; Cys, sum of cysteine and cystine; EAA (essential amino acids), sum of Leu, Val, Ile, Phe, Met, Arg, Trp, His, Thr, and Lys; TAA (total amino acids), sum of EAA, Tyr, Ser, Glx, Pro, Gly Asx, and Ala; BCAA, sum of Ile, Leu, and Val. Cys was not included in TAA because it could not be quantified in the plasma samples. Asx and Glx are presented as Asn and Gln are converted to Asp and Glu, respectively, during the acid hydrolysis.