Phenolic content of Meili grapes and wine at different density levels.
(A) Skin, (B) Seed, (C) Wine. D3 = 1076 kg m-3, D4 = 1082 kg m-3, D5 = 1089 kg m-3. TPC: total phenolic content expressed as gallic acid equivalent (GAE); TFOC: total flavonoid content expressed as rutin equivalent (RE); TFAC: total flavanol content expressed as (+)-catechin equivalents (CE); TMAC: total monomeric anthocyanin content expressed as cyanidin 3-glucoside equivalent (C3GE). Different letters within the same column indicate significant differences among the different density levels (LSD test; P≤0.05).