Solvent-Free Enzymatic Synthesis of Fatty Alkanolamides

Pär Tufvesson, Annika Annerling, Rajni Hatti-Kaul, Dietlind Adlercreutz

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

An environmentally benign and volume efficient process for enzymatic production of alkanolamides is described. Immobilized Candida antarctica lipase B, Novozym1435, was used to catalyze the condensation of lauric acid with monoethanolamine. The reaction temperature of 908C was required to keep the reactants in a liquid state. Stepwise addition of the amine minimized problems caused by the formation of a highly viscous amine/fatty acid ionpair. The enzyme was both very active and stable under the reaction conditions, with about half of the activity remaining after 2 weeks. The maximum amide yield obtained when using equimolar amounts of the reactants was 75%, which could be increased to 95% upon water removal. Special precautions to avoid co-distillation of the amine were required. Two different strategies to avoid the amine loss are presented.
Keyword: Biosurfactant,Ethanolamine,Amide,Immobilized lipase
Original languageEnglish
JournalBiotechnology and Bioengineering (Print)
Volume97
Issue number3
Pages (from-to)447-453
ISSN0006-3592
DOIs
Publication statusPublished - 2007
Externally publishedYes

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