Firmness is the main feature of fruit quality [18]. The firmness values of chitosan coated and uncoated red kiwifruit were shown in Table 1. It was observed that firmness values of uncoated red kiwifruit started to decline after the first days of storage meanwhile statistically reliable changes of this parameter were not detected during the period from 7 to 14 days. Consequently, the firmness of uncoated berry samples was low and presented 30.9% of initial value after 26 days of storage. Decline of berry firmness was characteristic to chitosan coated samples as well. This parameter for coated berries presented 24.2% of initial value at the end of storage. Based on these results, we can state that chitosan coating affected the berry firmness value significantly up to the eighteenth day of storage and later no significant differences were determined at p ≤ 0.01 significance level (Fig. 1a). As Krupa, Latocha and Liwinska [18] have reported, fruit firmness rapidly decreased for cultivars of A. arguta and A. arguta × Avicularia purpurea during the first 14 days of storage at 1 °C.