文摘
A newly-isolated strain of Serratia marcescens, G12, was characterized for 2,3-butanediol (2,3-BD) production. In shake-flask and batch fermentations, 2,3-BD reached 48.5 and 51?g?l?, respectively. Low amounts of (~8?g?l?) of acetoin were also formed. In fed-batch fermentations, strain G12 produced 72.8?g 2,3-BD?l? with glucose initially at 130?g?l?. When aeration rate was increased to 2.5?vvm for the fermentation process, 2,3-BD reached 87.8?g?l? and the highest productivity was 1.6?g?l??h?. Acetoin was at 6.2?g?l?. G12 therefore may be a suitable candidate strain for large-scale production of 2,3-BD.