| 초록 |
Marine biomass has been focused as a promising feedstock for biorefinery. In order to enhance the production of biorefinery process with bio-derived compounds from macroalgae, screening suitable microorganisms capable of utilizing macroalgae as carbon sources should be preceded. Laminaria japonica, one of the most plentiful brown algae in Korea, could be a great resource for biorefinery due to its high growth rate and carbohydrate contents. Mannitol is one of major carbohydrates obtained from L. japonica however most traditional fermenting microorganisms cannot utilize it. In this study, the fermenting ability using mannitol by Serratia sp. JMP1, isolated from the gut of turban shell, was investigated. Mannitol was proved as more favorable carbon source than glucose for ethanol production by Serratia sp. JMP1. In addition, increasing in pH and substrate concentration brought escalation of both formic acid and ethanol production. Especially, accumulated formic acid at high pH condition can be a prominent source to the MFC system. |
