• Title/Summary/Keyword: Research Process Engineering

Search Result 13,308, Processing Time 0.053 seconds

Pilot Scale Production of Poly (3-Hydroxybutyrate-co-3-hydroxy-valerate) by Fed-batch Culture of Recombinant Escherichia coli

  • Park, Jong-il;Lee, Sang-Yup;Kyungsup Shin;Lee, Woo-Gi;Park, Si-Jae;Chang, Ho-Nam;Chang, Yong-Keun
    • Biotechnology and Bioprocess Engineering:BBE
    • /
    • v.7 no.6
    • /
    • pp.371-374
    • /
    • 2002

  • Production of poly(3-hydroxybutyrate-co-3-hydroxyvalerate)［P(3HB/V)］, by fed-batch culture of recombinant Escherichia coli harboring a plasmid containing the Alcaligenes latus polyhy-droxyalkanoate (PHA) biosynthesis genes, was examined in two pilot-scale fermentors with air supply only, In a 30 L fermentor having a XLa value of 0.11 S­$^1$, the final P(3HB/V) concentration and the P(3HB/V) content obtained were 29.6 g/L and 70.1 wt%, respectively giving a productivity of 1.37 g P(3HB/V)/L-h. In a 300 L fermentor having a XLa of 0.03 S­$^1$, the P(3HB/V) concentration and the P(3HB/V) content were 20.4 g/L and 69 wt%, respectively giving a productivity of 1.06g P(3HB/V)/L-h. These results suggest that economical production of P(3HB/V) is possible by fed-batch culture of recombinant E. coli in a large-scale fermentor having low KLa value.

  • PDF KSCI