Figure 1.

Water vapour permeability (WVP) of (a) chitosan and (b) alginate-based films, varying the olive oil (O, % w/w) and soybean lecithin (L, % w/w) contents according to Table 1. Bars are expressed as mean ± standard deviation. Means in bars with different letters are significantly different (p < 0.05), based on Tukey’s test performed separately for alginate and chitosan-based films.