carried out by Spectrophotometry method, using p- phenildiazonium sulfonate reagent. A
qualitative, visual comparison of colour intensity of samples with reference colour scale of
the standard solution … The histamine content is determined quantitatively by the standard
curve regression equation (y= 0.003x–0.062) with determination coefficient value (R2=
0.938). The results showed that histamine content inprocessed bullet tuna (Auxis thazard) …