Highly selective biocatalytic synthesis of monoacylglycerides in sponge-like ionic liquids
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Other documents of the author: Lozano, Pedro; Gómez, Celia; Nieto Cerón, Susana; Sánchez Gómez, Gregorio; Garcia-Verdugo, Eduardo; Luis, Santiago V.
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http://dx.doi.org/10.1039/C6GC01969B |
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Title
Highly selective biocatalytic synthesis of monoacylglycerides in sponge-like ionic liquidsAuthor (s)
Date
2016-08Publisher
The Royal Society of ChemistryBibliographic citation
LOZANO, Pedro, et al. Highly selective biocatalytic synthesis of monoacylglycerides in sponge-like ionic liquids. Green Chemistry, 2017.Type
info:eu-repo/semantics/articlePublisher version
http://pubs.rsc.org/-/content/articlehtml/2017/gc/c6gc01969bSubject
Abstract
The biocatalytic synthesis of monoacylglycerides (MAGs) was carried out by the direct esterification of fatty acids (i.e. capric, lauric, myristic, palmitic and oleic acids, respectively) with glycerol in different ... [+]
The biocatalytic synthesis of monoacylglycerides (MAGs) was carried out by the direct esterification of fatty acids (i.e. capric, lauric, myristic, palmitic and oleic acids, respectively) with glycerol in different ionic liquids (ILs) based on cations with long alkyl side-chains (e.g. 1-hexadecyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [C16mim][NTf2], 1-dodecyl-3-methylimidazolium tetrafluoroborate [C12mim][BF4], etc.). Although all ILs have been shown as suitable reaction media for Novozym 435-catalyzed esterification of glycerol with free fatty acids, a high selectivity of MAGs was only observed in the [C12mim][BF4] case (e.g. up to 100% selectivity and 100% yield for monolaurin). Furthermore, as these ILs are temperature switchable ionic liquid/solid phases that behave as sponge-like systems, a straightforward protocol for IL-free MAG recovery, based on iterative centrifugations at controlled temperature, has been developed. [-]
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