Fig. 6

Effects of 1.5% chitosan treatment on the energy levels and activities of enzymes related to energy metabolism in postharvest longan fruit. Energy levels are assessed by ATP (a), ADP (b), AMP (c) content, and energy change (d). Enzymes related to energy metabolism include CCO (E), SDH (F), Ca2+-ATPase (G) and H+-ATPase (H). Error bars represent SD (n = 4). Bars with different letters within a sampling date indicate significant differences (P < 0.05).