Fig. 2: Dynamic changes in FT-IR spectra during in vitro fermentation.

0 h, 6 h, 12 h, 24 h, and 48 h indicate the FT-IR spectra at different time points of fermentation.
0 h, 6 h, 12 h, 24 h, and 48 h indicate the FT-IR spectra at different time points of fermentation.