Figure 2
From: Revealing the constituents of Egypt’s oldest beer using infrared and mass spectrometry
Metabolites analysis of the beer resides from the vats. (A) Representative overlaid chromatograms of non-volatile primary metabolites in vats analyzed as silylated products; (B) Relative percentage of chemical classes of compounds in beer residue samples as analyzed using GC-MS for non-volatiles analysis post silylation; (C) Representative GC-MS chromatogram of headspace volatiles collected from vats; (D) Relative percentage of chemical classes of volatile compounds in beer residue samples as analyzed using GC-MS.
