TY - JOUR AU - Pérez-Tello, Guillermo O. AU - Martínez-Téllez, Miguel Ángel AU - Vargas-Arispuro, Irasema AU - González-Aguilar, Gustavo A. PY - 2009 TI - Chilling Injury in Mamey Sapote Fruit (Pouteria sapota): Biochemical and Physiological Responses JF - American Journal of Agricultural and Biological Sciences VL - 4 IS - 2 DO - 10.3844/ajabssp.2009.137.145 UR - https://thescipub.com/abstract/ajabssp.2009.137.145 AB - Problem statement: Cold storage is needed in order to delay senescence and achieve a longer commercial life of tropical fruits like mamey sapote (Pouteria sapota), therefore, the physiological and biochemical responses of this fruit to cold storage were evaluated. Approach: Samples from different storage temperature (20, 10 and 2°C) were taken at five-day intervals and Chilling Injury Index (CII), decay (%), pulp firmness, weight loss (%), sucrose, fructose and glucose contents, electrolyte leakage (%), ethylene and carbon dioxide production rates and the activities of Peroxidase (POD), Polyphenoloxidase (PPO) and Phenylalanine Ammonia-Lyasa (PAL), were evaluated. Results: CII of fruit stored at 2 and 10°C was similar and symptoms included abnormal ripening into trimming zones close to the skin and pulp. Development of CI symptoms was more evident after 10 days of storage at 2 and 10°C. This trend may be associated with decrease of sucrose content but not with fructose that increased on fruits stored at 2°C (p