Fig. 3: The chemical structure of microbial biomass (MB) materials.
From: High oxygen barrier packaging materials from protein-rich single-celled organisms

FTIR spectra for (a) the MB powder with 25 wt% glycerol (Gly, blue line), a MB film (25 wt% Gly, black line) and MB tray (20 wt% Gly, orange line). In (b, c, d): deconvoluted FTIR spectra in the amide I region 1580–1700 cm-1. The black dotted lines are experimental base-line corrected FTIR data.