Structural parameters of amylopectin clusters and semi-crystalline growth rings in wheat starches with different amylose content.
Small-angle X-ray scattering (SAXS) and scanning electron microscopy (SEM) were used to investigate the internal structure of wheat starch granules with different amylose content. Different approaches were used for treatment (interpretation) of SAXS data to assess the values of structural parameters of amylopectin clusters and the size of crystalline and amorphous lamella in different wheat starches. The average values of the semi-crystalline growth rings thickness in starches have been determined and the relationship between structural characteristics and thermodynamic melting parameters is discussed.
Yuryev
Vladimir P
VP
Institute of Biochemical Physics, Russian Academy of Sciences, Kosygina Str. 4, 119991 Moscow, Russia. v.yuryev@sky.chph.ras.ru
Krivandin
Alexei V
AV
Kiseleva
Valentina I
VI
Wasserman
Lyubov A
LA
Genkina
Natalia K
NK
Fornal
Jozef
J
Blaszczak
Wioletta
W
Schiraldi
Alberto
A
D000687:Amylopectin / Q000737:chemistry* / Q000648:ultrastructure; D000688:Amylose / Q000032:analysis*; D003460:Crystallization; D008855:Microscopy, Electron, Scanning; D013213:Starch / Q000737:chemistry* / Q000648:ultrastructure; D013816:Thermodynamics; D014908:Triticum / Q000737:chemistry* / Q000648:ultrastructure; D014961:X-Ray Diffraction
D013213:Starch; D000688:Amylose; D000687:Amylopectin