The results in Fig. 4 indicate that chitosan at 0.5 and 1%
could significantly decrease gray mould and blue mould caused
by B. cinerea and P. expansum in tomato fruit stored at 25
and 2 ◦C, respectively (P < 0.05). Control effects of chitosan on
both diseases were enhanced when the concentration of chitosan
increased from 0.5 to 1%. In addition, gray mould was better
controlled than blue mould in tomato fruit treated with chitosan
at both temperatures.