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. 2019 Jul 8;56(9):4045–4056. doi: 10.1007/s13197-019-03873-9

Fig. 4.

Fig. 4

Contact angles of water, formamide and diiodomethane on the surface of gelatin films incorporated with mint essential oil (MEO) at different concentrations. Equal letters in the columns for the same parameter mean that the samples did not differ significantly (p > 0.05)