2,3-butanediol (BDO) was the main b

2,3-butanediol (BDO) was the main byproduct (26.6 g/L). Less than 10 g/L of the other metabolites was produced.
As 1,3-Propanediol (PDO) and other metabolites accumulated, the rate of PDO production decreased significantly due mainly to the toxic effects of these metabolites.