3.2. Effect of NO on contents of ATP, ADP and AMP and energy charge
ATP content increased slightly within the first 5 day and decreased rapidly to the end of the storage (Fig. 2A). NO treatment maintained the significantly (P < 0.05) higher ATP content in comparison with control fruit after 10 day of storage. ADP content increased before day 15 and decreased afterwards ( Fig. 2B). NO-treated banana fruit exhibited higher ADP content in comparison with control fruit during the storage period. AMP content gradually increased with the storage time, which was inhibited by NO treatment ( Fig. 2C). Based on the changes of ATP, ADP and AMP, energy charge in banana fruit decreased during the whole storage ( Fig. 2D). Compared with control fruit, the decrease of energy charge was retarded by NO treatment.