Article (Scientific journals)
Enzymatic synthesis and surface properties of novel rhamnolipids
Nott, Katherine; Richard, Gaetan; Laurent, Pascal et al.
2013In Process Biochemistry, 48, p. 133-143
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Abstract :
[en] New rhamnolipids were obtained via the development of a synthesis procedure consisting of two biocatalyzed steps. In the first step, naringinase was used to introduce a primary alcohol function onto rhamnose by glycosylation of 1,3-propanediol. In the second step, immobilized lipase B from Candida antarctica catalyzed the esterification of the primary hydroxyl group with mono- and di-carboxylic fatty acids of increasing chain length (from C8 to C14). For the monoic acids, the initial rate and 24 h yield decreased with increasing chain length. For the dioic acid, the number of carbon atoms of the acid did not influence these parameters. The new rhamnolipid obtained with tetradecanoic acid showed very good surface properties. At pH 5, it had a very low critical aggregation concentration of 1.70 M and it diminished water’s surface tension to 27.6 mN/m. It was also able to form stable insoluble monolayers. On the other hand, the rhamnolipid formed with tetradecanedioic acid showed far less interesting surface properties.
Disciplines :
Chemistry
Author, co-author :
Nott, Katherine ;  Université de Liège - ULiège > Chimie et bio-industries > Chimie biologique industrielle
Richard, Gaetan ;  Université de Liège - ULiège > Chimie et bio-industries > Chimie biologique industrielle
Laurent, Pascal ;  Université de Liège - ULiège > Chimie et bio-industries > Chimie biologique industrielle
Jérôme, Christine  ;  Université de Liège - ULiège > Département de chimie (sciences) > Centre d'études et de rech. sur les macromolécules (CERM)
Blecker, Christophe ;  Université de Liège - ULiège > Chimie et bio-industries > Science des alim. et formul.
Wathelet, Jean-Paul ;  Université de Liège - ULiège > Chimie et bio-industries > Chimie générale et organique
Paquot, Michel ;  Université de Liège - ULiège > Chimie et bio-industries > Chimie biologique industrielle
Deleu, Magali  ;  Université de Liège - ULiège > Chimie et bio-industries > Chimie biologique industrielle
Language :
English
Title :
Enzymatic synthesis and surface properties of novel rhamnolipids
Publication date :
2013
Journal title :
Process Biochemistry
ISSN :
1359-5113
Publisher :
Elsevier, United Kingdom
Volume :
48
Pages :
133-143
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 10 May 2013

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