The influences of pH control strategies on the distribution of 1,3-propanediols and 2,3-butanediols production by an isolated indigenous Klebsiella sp. Ana-WS5

Hong Wei Yen, Fang Tzu Li, Jo Shu Chang

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In the simultaneous biological production of 1,3-propanediols (PDO) and 2,3-butanediols (BDO), glycerol was suggested to be a suitable carbon source. Extra addition of 10. g/L of lactic acid can create about a 30% increase in total diols production compared to the control batch. Several different pH control strategies were investigated. The results indicated that the batch with the uncontrolled pH had the highest total diols production among all pH control strategies, although it had the lowest productivity. Even the strategy of pH fluctuation did not enhance total diols production, it significantly enhanced the productivity. The soluble metabolite products (SMPs) analysis also indicated that the pH fluctuation will only affect BDO production, but had no impacts on the induction of more metabolites produced. Conclusively, both adding lactic acid and the pH fluctuation strategy are simple and efficient methods of simultaneously enhancing BDO and PDO production.

Original languageEnglish
Pages (from-to)292-296
Number of pages5
JournalBioresource technology
Volume159
DOIs
Publication statusPublished - 2014 May

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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