KSBB Journal
- 제13권5호
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- Pages.626-630
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- 1998
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- 1225-7117(pISSN)
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- 2288-8268(eISSN)
유기산 및 포도당 혼합배지에서 Azotobacter vinelandii UWD의 생장 및 생분해성 고분자 생산에 대한 질소원의 영향
Effect of Nitrogen Source on the Growth of Azotobacter vinelandii UWD and Production of Biodegradable Plastics in the Mixture of Organic Acids and Glucose
초록
Ammonium limitation did not promote ply(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) production of Azotobacter vinelandii UWD. In acid phase, ammonium limitation during utilization of propionic acid and butyric acid led to 35% decrease in product yield. In glucose phase, both biomass yield and polymer yield decreased about 22% under ammonium limitation. However, in nitrogen-fixing culture glucose was consumed 25% faster and the final PHBV wt% decreased slightly. Under nitrogen limitation a portion of the carbon sources was used fro nitrogen fixation rather than biomass and polymer formation, resulting in a decrease in biomass yield and polymer yield.
키워드