http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Deurim YUN,Young Soon UM,Sung Ok HAN 한국생물공학회 2021 한국생물공학회 학술대회 Vol.2021 No.10
Hexanoic acid (HA) is a useful chemical as a precursor of food additive, perfume, and hexanol, an alternative for gasoline. Clostridium sp. JS66 produces HA using syngas as carbon and energy sources. In this study, we conducted mixotrophic fermentation by supplying glucose and syngas together to increase HA production. During the mixotrophic fermentation, produced HA was removed by adsorbent resin to prevent HA inhibition. As a result, gas consumption and HA production increased 6.1 and 3 fold, respectively, under mixotrophic fermentation comparing to no resin mixotrophic fermentation. This result indicates in situ removal of HA is necessary for high production of HA by mixotrophic fermentation. To improve HA production further, high CO pressure was applied during mixotrophic fermentation with absorbent resin. Notably, the final HA concentration under high CO pressure was 5.5 g/L, which was 2.4 times higher than under low CO conditions. This result demonstrates that mixotrophic fermentation under high CO pressure with in-situ removal HA system is effective for high HA production by providing sufficient reducing power for chain elongation and preventing HA inhibition.