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. 2020 May 1;6(4):e03809. doi: 10.1016/j.heliyon.2020.e03809

Figure 2.

Fig. 2

SEM micrographs of the surface and cross-section of whey protein concentrate films incorporated with nanoemulsioned α-TOC, NAT, and its mixture. F0: Film without active compounds (Control film); F1: 2% α-TOC – 0 ppm NAT; F2: 0% α-TOC – 300 ppm NAT; F3: 2% α-TOC – 300 ppm NAT.