Figure 3

HPLC–DAD chromatograms for samples of (a) pulp wine, (b) peel wine, (c) pulp vinegar, (d) pulp vinegar + extract, (e) peel vinegar, (f) peel vinegar + extract. Gallic acid (1), catechin (2), caffeic acid (3), epicatechin (4), coumaric acid (5), ferulic acid (6).