Main Reaction: diacetyl >> acetoin + NADH

Reference: PubMed ID: 23567699
Authors: Mazumdar S, Lee J, Oh MK
Title: Microbial production of 2,3 butanediol from seaweed hydrolysate using metabolically engineered Escherichia coli.
Published: 2013 May

diacetyl --> acetoin + NADH