Synthesis, characterisation and microbial utilisation of amorphous polysugars from lactose

•New polysugars have been generated from the melt condensation of monosaccharides and characterised.•Microwave radiation efficiently depolymerised lactose.•Bifidobacteria displayed marked differences in growth on polysugars compared to galactooligosaccharide. The melt polymerisations of glucose, gal...

Full description

Saved in:
Bibliographic Details
Published in:Carbohydrate polymers 2015-03, Vol.117, p.223-229
Main Authors: Daines, Alison M., Smart, Zlatka, Sims, Ian M., Tannock, Gerald W., Hinkley, Simon F.R.
Format: Article
Language:English
Subjects:
Bifidobacterium - metabolism
Biotransformation
Carbohydrate analysis
Lactose - chemistry
Melt polymerisation
Microbial utilisation
Microwave
Microwaves
Polymerization
Polysaccharides - chemical synthesis
Polysaccharides - metabolism
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•New polysugars have been generated from the melt condensation of monosaccharides and characterised.•Microwave radiation efficiently depolymerised lactose.•Bifidobacteria displayed marked differences in growth on polysugars compared to galactooligosaccharide. The melt polymerisations of glucose, galactose, xylose and fucose with citric acid, and mixtures of sugars therein are reported. Characterisation of the citric-acid catalysed reaction products indicated similar degrees of branched polymerisation but differences in the overall molecular weight of the polymers produced. The dairy by-product lactose could not be polymerised in a similar fashion but was shown to be readily hydrolysed using microwave radiation and a polymer generated from the melt condensation of the resultant glucose and galactose monosaccharides. A preliminary assessment of the bifido-bacterial utilisation of the lactose-derived polymerised products demonstrated a significantly different growth profile compared to commercially utilised galactooligosaccharides (GOS).
ISSN:0144-8617
1879-1344
DOI:10.1016/j.carbpol.2014.09.061