HPLC chromatogram of phenolic compounds monitored in
crude extract of the PL cell line suspension culture over one
growth period of 24 days in a high-anthocyanin production
medium. 1: caffeic acid (CA); 2: chlorogenic acid (CH); 3:
3,4-dicaffeoylquinic acid (3,4-DCQA); 4: 3,5-dicaffeoylquinic
acid (3,5-DCQA); 5: 4,5-dicaffeoylquinic acid (4,5-DCQA); 6:
3,4,5-tricaffeoylquinic acid (3,4,5-TCQA).