FIG. 2.

Growth of S. ludwigii in laboratory media at 25°C in the presence of no chitosan (control) (○), 0.2 g of native chitosan per liter (■), and chitosan hydrolysates with viscosities of 96 s (□), 24 s (▴), 17 s (▵), and 9 s (●). The hydrolysates were prepared by the oxidative-reductive degradation method. The results are means based on five replicate values for absorbance at 620 nm (A₆₂₀). Bars indicate standard error.