2.3. Fruit treatments
Fruit were treated as follows: 36 whole fruit were dipped for 5 s to 10 min, depending on the acidity of the solutions: citric acid solution (ACS) at pH 0.8, 1.0 or 1.3, tartaric acid solution (ATS) at pH 0.8, 1.0 or 1.3, citric acid plus 1% (w/w) chitosan (CCh) at pH 0.8, 1.0 or 1.3, or tartaric acid plus 1% (w/w) chitosan (TCh) at pH 0.8, 1.0 or 1.3. Non-treated fruit were used as controls. Treated and control fruit were air-dried, and distributed into groups of nine fruit each in small polyethylene baskets. Baskets were then placed in perforated plastic boxes (60 cm×40 cm) and stored for 2 weeks at 10±2 ◦C, to slow down the brown-ing rate. All experiments (treatments) were done in triplicate.