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Interesterification of phosphatidylcholine with lipases in organic media

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Summary

Lipases were investigated with respect to their ability to catalyse the incorporation of fatty acids into phosphatidylcholine (PC) by interesterification reactions. The enzymes were dried onto solid support materials and the conversions were carried out in water-saturated toluene. Three lipases (two fungal and one plant enzyme) had the desired activity; immobilized lipase from Mucor miehei (Lipozyme) was the most active enzyme. The Lipozyme-catalysed interesterification was selective for the sn-1 position of PC and during 48 h of reaction around 50% of the fatty acids in this position were replaced with heptadecanoic acid, a fatty acid which was practically absent in the original phospholipid. Due to adsorption on the support material and the competing hydrolysis reaction the total amount of PC in the reaction solution decreased to about 40% of the original amount. Higher interesterification rates were obtained with free fatty acids as acyl donors than with fatty acid esters.

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Authors and Affiliations

  1. Department of Biotechnology, Chemical Center, University of Lund, P. O. Box 124, S-221 00, Lund, Sweden

    Ingemar Svensson, Patrick Adlercreutz & Bo Mattiasson

Authors
  1. Ingemar Svensson
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  2. Patrick Adlercreutz
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  3. Bo Mattiasson
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Svensson, I., Adlercreutz, P. & Mattiasson, B. Interesterification of phosphatidylcholine with lipases in organic media. Appl Microbiol Biotechnol 33, 255–258 (1990). https://doi.org/10.1007/BF00164517

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  • DOI: https://doi.org/10.1007/BF00164517

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