Colorimetric determination of tryptophan: the effect of light on the acetic anhydride requirements.
D000085:Acetates; D000089:Acetic Anhydrides; D003124:Colorimetry; D007202:Indicators and Reagents; D008027:Light; D014364:Tryptophan / Q000032:analysis*; D014466:Ultraviolet Rays
D000085:Acetates; D000089:Acetic Anhydrides; D007202:Indicators and Reagents; C031800:acetic anhydride; D014364:Tryptophan