highly significantP < 0.001
Evaluation of antioxidant activity of trans-crocetin in vitro The scavenging ability of trans-crocetin for superoxide anion (•O 2 − ) was evaluated by the lumino-DMSO-NaOH luminescence system, and as shown in Table 5 , trans-crocetin had more vital scavenging abilities than the positive control ascorbic acid, with highly significant differences ( P < 0.001) compared with the control group.