Homogeneous catalytic hydrogenation of lipids in aqueous dispersions and bacterial cell membranes with an efficient water-soluble Pd(II)-sulfosalan catalyst, Na2[Pd(HSS)]

Gombos, Réka and Bunda, Szilvia and Nagyházi, Brigitta and Joó, Ferenc (2020) Homogeneous catalytic hydrogenation of lipids in aqueous dispersions and bacterial cell membranes with an efficient water-soluble Pd(II)-sulfosalan catalyst, Na2[Pd(HSS)]. CATALYSIS COMMUNICATIONS, 147. ISSN 1566-7367

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Abstract

The recently synthesized water-soluble Na2[Pd(HSS)] (Na2HSS = hydrogenated sulfonated salen) was shown to be a non-toxic, active catalyst for modification of model and biomembranes by homogeneous catalytic hydrogenation. Hydrogenation of the unsaturated fatty acyl residues in soy-bean lecithin liposomes and in biomembranes of intact Pseudomonas putida F1 cells was accompanied by substantial cis-trans isomerization around the C[dbnd]C double bonds. The hydrogenations could be run in aqueous media under mild conditions (25 °C, 1 bar H2). Partial saturation (up to 10% conversion) of the membrane lipids of P. putida F1 did not damage the cells. © 2020 Elsevier B.V.

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