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. 2024 Jan:535:108991.
doi: 10.1016/j.carres.2023.108991. Epub 2023 Nov 26.

Structural characterization of a nonionic rhamnolipid from Burkholderia lata

Charles Gauthier  1 , Serge Lavoie  2 , Sonja Kubicki  3 , Marianne Piochon  2 , Maude Cloutier  4 , Maude Dagenais-Roy  5 , Marie-Christine Groleau  5 , André Pichette  2 , Stephan Thies  3 , Eric Déziel  6
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Structural characterization of a nonionic rhamnolipid from Burkholderia lata

Charles Gauthier et al. Carbohydr Res. 2024 Jan.

Abstract

We present the isolation and structural characterization of a novel nonionic dirhamnolipid methyl ester produced by the bacterium Burkholderia lata. The structure and the absolute configuration of the isolated dirhamnolipid bearing a symmetrical C14-C14 methyl ester chain were thoroughly investigated through chemical degradation and spectroscopic methods including 1D and 2D NMR analysis, HR-ESI-TOF-MS, chiral GC-MS, and polarimetry. Our work represents the first mention in the literature of a rhamnolipid methyl ester from Burkholderia species.

Keywords: Biosurfactants; Burkholderia lata; Methyl ester; Nonionic rhamnolipids; Nuclear magnetic resonance; Structural characterization.

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Conflict of interest statement

Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Charles Gauthier reports financial support was provided by Natural Sciences and Engineering Research Council of Canada. Eric Deziel reports financial support was provided by Natural Sciences and Engineering Research Council of Canada. Serge Lavoie reports financial support was provided by Natural Sciences and Engineering Research Council of Canada. Charles Gauthier reports financial support was provided by Quebec Health Research Fund. Stephan Thies reports financial support was provided by Ministry of Culture and Science (NRW, Germany). Sonja Kubicki reports financial support was provided by Ministry of Culture and Science (NRW, Germany). Sonja Kubicki reports financial support was provided by Mitacs Canada. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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