Main Reaction: Butyrate +H+ >>Butyric acid

Reference: PubMed ID: 25722742
Authors: Calusinska M, Hamilton C, Monsieurs P, Mathy G, Leys N, Franck F, Joris B, Thonart P, Hiligsmann S, Wilmotte A
Title: Genome-wide transcriptional analysis suggests hydrogenase- and nitrogenase-mediated hydrogen production in Clostridium butyricum CWBI 1009.
Published: 2015 Feb 22

Butyrate + H --> Butyric acid