Enzymatic esterification of glycerol and stearic acid in non-conventional mediaCsanádi, Zsófia (Avtor) Bélafi-Bakó, Katalin (Avtor) Szentgyörgyi, Eszter (Avtor) Gubicza, László (Avtor) Knez, Željko (Avtor) Leitgeb, Maja (Avtor) glycerol-mono-stearateLipaseionic liquidssupercritical $CO_2$carbon dioxideIonic liquids as trihexyl-tetradecyl-phophonium-dicyanamide (Cyphos 105) and cocosalkyl-pentaethoxi-methyl-ammonium-methosulfate (Ammoeng 100) were applied for the esterification of stearic acid and glycerol using Candida antarctica lipase (Novozyme 435). When only ILs were applied as solvents at 1:15 initial substrate molar ratio the conversion was 76 and 78 % in the case of two kinds of ILs, respectively. Mixed the ILs and supercritical $CO_2$ the conversion reached 79 and 86 %. The conversion was found highest in supercritical $CO_2$, reached 90 %. Moreover formation of glycerol-di-stearate is much lower in the case of ILs comparing with $SCCO_2$.20102015-07-10 17:31:08Znanstveno delo52376sl