Short-chain fatty acids (SCFAs) (acetic acid, propanoic acid, isobutyric acid, butyric acid, isovaleric acid, valeric acid, and caproic acid) were determined as described by Zhao et al. [16 (link)] with some modifications, which are given in Supplementary File S1. Gas chromatography–mass spectrometry was used to analyze SCFAs.
Free full text: Click here