and pH of medium on the antifungal activity of chitosan against Fulvia fulva(Cooke) Cifferri in vitro have been investigated.The results indicated that the chitosans have strong anti-fungal activities
and the activity increased with the increase of concentration
decrease of pH of medium
lactic acid and acetic acid were the better solvent
the 86% of deacetylation degree and the middle molecular weight of CS have better effect than others.