The 53rd Hiroshima University Biomass Evening Seminar
(The 13th Hiroshima University ACE Seminar)was held.
Date & Time:Thu .18 May., 2017 16:20-17:50
Place: Engineering 110 Lecture Room, Higashi-Hiroshima Campus, Hiroshima University
Commentary: Yukihiko MATSUMURA
Professor, Institute of Engineering, Hiroshima University
Lecture: Toyokazu MIURA
Reseacher , Graduate School of Advanced Sciences of Matter, Hiroshima University
“Biomethane production from brown algae”
Marine macroalgae are receiving increasing attention as a feedstock for biomethane
production because they do not compete with food for farm land and are less resistant to
degradation than lignocellulosic feedstocks. In this study, halophilic microbes were used toproduce methane from brown algae, which contain high levels of salt, without dilution ofsalinity.
Lecture: Shota NAKAI
M2 Student, Graduate School of Advanced Sciences of Matter, Hiroshima University
“Lipid production by using short-chain fatty acid-assimilating microorganism and marine biomass.”
Using a marine low organic acid-assimilating bacterium Nitratireducter sp. OM-1 strain, we are aiming to establish biorefinery technology for biofuel production from biomass such as marine macroalgae.
Strain OM-1 can accumulate oils at 60% of dry cell weight intracellular under the stress condition of nitrogen starvation. In this research, we studied on various culture conditions to improve oil production.
Lecture: Kaisei TAKEMURA
M1 Student, Graduate School of Advanced Sciences of Matter, Hiroshima University
“Effect of modification of acetate synthesis pathway on intracellular ATP pool in Moorella thermoacetica ”
Moorella thermoacetica ATCC39073 that can grow on H2-CO2 gas and produces acetate. We modified acetic acid synthesis pathway in M. thermoacetica, and succeeded to breed the mutant strain dpdul::aldh that produced ethanol from fructose. However, the mutant didn’t grow under H2-CO2 gas. We speculated that the decrease in supply of ATP due to the destruction of acetic acid synthesis pathway resulted in the no growth on H2-CO2. To prove the assumption, we measured intracellular ATP pool in the wild type grown on H2-CO2 gas and fructose, and the mutant strain dpdul::aldh grown on fructose. As speculated, the intracellular ATP pools in the wild type with H2-CO2 gas and the mutant with fructose were one-fifth than that in wild type with fructose.
Chair: Obie FAROBIE
Visiting Reseacher, Institute of Engineering, Hiroshima University