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Changes of enzyme activities (A, Chlase, LOX, POD, APX) and chemical components (B, ASA and MDA) in tobacco leaves during curing. Data are shown as the means ± SE (n = 6). Asterisks indicate significant differences between the values at 0 h and 48 h or 72 h based on Duncan’s multiple range test in SPSS (* p < 0.05, ** p < 0.01). Chlase, chlorophyllase; LOX, lipoxygenase; POD, peroxidase; APX, ascorbate peroxidase; ASA, ascorbic acid; MDA, malondialdehyde.
