Figure 10.

Amino acid sequence of albumin peptide before (a) and after (b) food colorant binds to different amino acids contained in the chain. (a) Trypsin (symbolized by red scissors) is shown cleaving the amino acid chain of a 16–40 sequence of albumin; (b) colorants (symbolized by yellow hexagons) bind to the major amino acids arginine (R), histidine (H), and lysine (K) present in the albumin sequence, making it difficult for the trypsin to cleave the sequence, and decreasing digestive effectivity.