Enzymatic reactions and synthesis of n-butyl caproate: esterification, transesterification and aminolysis using a recombinant lipase from Geobacillus thermoleovorans CCR11

Environ Technol. 2010 Sep;31(10):1101-6. doi: 10.1080/09593331003758805.

Abstract

The recombinant lipase LipMatCCR11 from the thermophilic strain Geobacillus thermoleovorans CCR11 was applied in the synthesis of n-butyl caproate via transesterification in hexane and xylene. The short chain flavour ester was obtained by alcoholysis from ethyl caproate and n-butyl alcohol and acidolysis from n-butyl butyrate and caproic acid. This enzyme was also used in the condensation reaction from caproic acid and n-butanol. The conversion percentages at equilibrium (Xe) were similar to those obtained with Candida antarctica lipase fraction B (CAL-B) in the same reaction conditions, while lower conversion velocities (k) were attained. LipMatCCR11 reached high conversion percentages in either hexane or xylene as organic media (> 63%); the enzyme was also able to catalyze the aminolysis reaction of ethyl caproate with benzyl amine in hexane obtaining a conversion percentage > 62%.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alkenes / chemistry
  • Caproates / chemistry
  • Caproates / metabolism*
  • Esterification
  • Geobacillus / enzymology*
  • Geobacillus / genetics
  • Kinetics
  • Lipase / chemistry
  • Lipase / genetics
  • Lipase / metabolism*
  • Recombinant Proteins / chemistry
  • Recombinant Proteins / genetics
  • Recombinant Proteins / metabolism*
  • Xylenes / chemistry

Substances

  • Alkenes
  • Caproates
  • Recombinant Proteins
  • Xylenes
  • 1-hexene
  • butyl caprylate
  • Lipase