Super atmospheric O2 packaging of Chinese cabbage reduced the production of lignin

Fresh-cut Chinese cabbage was packaged by super atmospheric O2, and held at 4??C, taking air packaging as control. The contents of lignin and H2O2 and, the activities and transcription expressions of four key enzymes of lignin synthesis, i.e., phenylalanine ammonia-lyase (PAL), 4-coumarate: CoA ligase (4-CL), cinnamyl alcohol dehydrogenase (CAD) and peroxidase (POD), were determined in the cabbage. The results showed that the lignin content of the cabbage packaged by super atmospheric O2 was markedly reduced (p?