Evidence for intermolecular binding between deacetylated acetan and the glucomannan konjac mannan.
Binary mixtures of deacetylated acetan and konjac mannan form thermoreversible gels under conditions for which the individual components do not gel. Such synergistic behaviour is normally attributed to intermolecular binding between the two polysaccharides. X-ray diffraction data obtained from oriented fibres prepared from deacetylated acetan-konjac mannan gels provides direct evidence for intermolecular binding between the two polysaccharides. The novel heterotypic junction zones appear to be six-fold helices with a pitch of 5.6 +/- 0.1 nm.
Department of Food Biophysics, Institute of Food Research, Norwich Research Park, Colney, Norwich, UK.
M J
MJ
Ridout
P
P
Cairns
G J
GJ
Brownsey
V J
VJ
Morris
D000091:Acetobacter / Q000254:growth & development; D000107:Acetylation; D001665:Binding Sites; D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D005285:Fermentation; D008351:Mannans / Q000737:chemistry* / Q000302:isolation & purification; D008969:Molecular Sequence Data; D009844:Oligosaccharides / Q000737:chemistry*; D011135:Polysaccharides, Bacterial / Q000737:chemistry* / Q000302:isolation & purification; D014961:X-Ray Diffraction
D008351:Mannans; D009844:Oligosaccharides; D011135:Polysaccharides, Bacterial; C068545:acetan; C022901:(1-6)-alpha-glucomannan