Exploring substrate specificities of a recombinant Rhizopus oryzae lipase in biodiesel synthesis

Research output: Contribution to journalArticle

Abstract

The alcoholysis of triolein was used to explore the specific features of a recombinant Rhizopus oryzae lipase (rROL) for biodiesel synthesis. For this purpose, different acylglycerols were compared as substrates in lipase-catalysed transesterification. rROL was shown to exhibit a higher specificity towards 1-monoolein than triolein compared to other R. oryzae lipases, being more than 4-fold more specific; in contrast, rROL did not accept 2-monoolein as substrate, concluding that it is highly 1,3-positional specific. Comparing ethanol and methanol as acyl-acceptors, it was observed that the latter caused more lipase inactivation. Regarding alcohols, it was also demonstrated that acyl migration occurred in moderate alcohol concentrations.

Details

Authors
Organisations
External organisations
  • Autonomous University of Barcelona
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Bioenergy

Keywords

  • Acylglycerols, Biodiesel, Lipase, Rhizopus oryzae, Transesterification
Original languageEnglish
JournalNew Biotechnology
StateE-pub ahead of print - 2017 Jul 12
Peer-reviewedYes