2.11. Firmness
Firmness was measured using a FT327 pressure tester (Effegi, Milan, Italy) equipped with a 6 mm diameter probe. For each 118 M. Hu et al. / Postharvest Biology and Technology 97 (2014) 115–122 treatment, two measurements were made at 2 equidistant points on the equatorial axis of peeled fruit. Firmness was expressed as newtons (N). Each treatment had three replicates, and each replicate contained 5 fruit.