The pH of the solution was adjusted to pH 5.0 with 1 mol/l NaOH and the solution made up to 500 ml. Fruit were allowed to dry for 4 h at 25°C after dipping. Fruits dipped in the acid solution without chitosan, pH 5.0, were used as control. They were placed in punnets (18 fruit/punnet) and stored at 2±1°C and 90% relative humidity for progressive assessments.