glycol catabolic process 1,2-propanediol catabolic process https://github.com/geneontology/go-ontology/issues/30214 propanediol catabolism 1,2-dihydroxypropane catabolic process biological_process 1,2-dihydroxypropane catabolism The chemical reactions and pathways resulting in the breakdown of propanediol, a sweet, colorless, viscous, hygroscopic liquid with the formula CH3-CHOH-CH2OH. propanediol degradation propanediol catabolic process propylene glycol catabolic process propanediol breakdown GO:0051144 propylene glycol catabolism