The objectives of this study were to investigate the effects of
chitosan on the control of gray mould and blue mould, caused
by B. cinerea and P. expansum in tomato fruit stored at different temperatures, as well as to evaluate the antifungal activity of
chitosan against both pathogens in vitro, and the elicitation of
defense markers, including polyphenoloxidase (PPO), peroxidase
(POD), and phenolic compounds by chitosan in fruit.