2.3. Chilling injury (CI) index
The incidence of CI was assessed every day during the ripening
period following 2 and 4 weeks of cold storage. The CI index was determined using a rating scale ranging from 0 to 4 based on
common visual symptoms of dark coloration and prominence of
lenticels on the skin area of affected fruit. The scale used was: 0 = no
damage; 1 = very light damage; 2 = light damage; 3 = moderate
damage and 4 = severe damage, as previously described by Nair
et al. (2004). The CI index was calculated by the following formula:
[(A × B)/5C], in which A represents the injury score of individual
fruit, B is the number of fruit affected, 5 is the total number of scores
storage. The CI index(0–4) used and C is the total number of fruit recorded.