Reference : The Structure and Thermal Stability of Amylose−Lipid Complexes: A Case Study on Amylo...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/169275
The Structure and Thermal Stability of Amylose−Lipid Complexes: A Case Study on Amylose−Glycerol Monostearate
English
Goderis, Bart [KUleuven > > > >]
Putseys, Joke [> >]
Gommes, Cédric mailto [Université de Liège - ULiège > Département de chimie appliquée > Département de chimie appliquée >]
Bosmans, Gertrui [> >]
Delcour, Jan [> >]
2014
Crystal Growth & Design
Elsevier Science
14
3221-3233
Yes (verified by ORBi)
International
1528-7483
Amsterdam
The Netherlands
[en] Three different crystalline amylose−glycerol monostearate (GMS) complexes with increasing thermal
stability can be distinguished: type I, type IIa, and type IIb. All complexes consist of GMS-loaded amylose helices that pack hexagonally into lamellar habits. The complex melting points are proportional to the thickness of the lamellae and depend on the amount of water in the system. For type I complexes, SAXS experiments reveal folded amylose chains and a lamellar thickness governed by the presence of two stretched lipid molecules per amylose helix. In the conversion from type I to type IIa complexes, the short amylose chains unfold and assume a stretched conformation, which increases the number of aligned lipid molecules within the helices to four. In type IIb complexes, another pair of lipid molecules is added. The derived quantitative relation between crystal layer thickness, water content and melting point for amylose−GMS complexes also predicts the melting points of other amylose−monoacyl glycerol complexes.
http://hdl.handle.net/2268/169275
http://pubs.acs.org/doi/abs/10.1021/cg4016355

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