Figure 2.

Inhibitory effect of graded levels of fish protein hydrolysates (FPH) on bacterial [(A) V. harveyi; (B) V. scophthalmi; and (C) V. anguillarum] growth. The x-axis indicates the incubation time (h), and the y-axis indicates the optical density (OD) measured at 600 nm. The experiments were repeated at least three times, and the average OD was presented in the figures.