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In this study, a quantitative method for measuring the content of iota (ι), kappa (κ), lambda (λ), mu (μ) and nu (ν) carrageenan in powder samples from industrial production was developed using rapid spectroscopic techniques and chemometrics. The reference method for quantification was 600...
Two chitooligosaccharide samples (COS1 and COS2) were prepared by enzymatic degradation of chitosan. The molecular weight of the main component was determined by mass spectrometry to be 2340 and 4303, respectively. They showed cholesteric liquid crystal structures in concentrated solutions. The...
The polysaccharide (VSP) from the gum exudate of quaruba ( Vochysia lehmannii ) had two components of almost identical M w centred at 24,800, as shown by HSPEC-MALLS. The presence of aggregates was shown since carboxy-reduction gave VSP-RED, which contained low molecular weight components with M...
Starch from cultivars of black bean, pinto bean, smooth pea, lentil and wrinkled pea starches were isolated and their composition, physicochemical properties and susceptibility towards porcine pancreatic α-amylase determined. The yield of starch ranged from 16.4 to 34.1% on a whole seed basis....
The influence of modified α, β and γ-cyclodextrins (mCDs) on water solutions of the elastin-like thermo-responsive poly(VPGVG) has been studied in this work. The studied mCDs are hydroxypropyl-α-CD MS=0.6, hydroxypropyl-β-CD MS=0.6, hydroxypropyl-β-CD MS=0.8, hydroxypropyl-β-CD MS=1.0,...
The suitability of TGA/IR method for the analysis of the degree of substitution (DS) of acetylated starch (SA) was assessed. Ten standard samples were analysed for their DS by hydrolysis method and, those of the standards which could be properly dissolved, also by 1 H NMR. NMR analysis shows as...
The (1→3)(1→4)-β- d -glucans from four cereal sources (oats, wheat, barley and rye) and one lichen source (Icelandic moss) were used to test two proposed structurally based hypotheses about the gelling mechanism of these polymers. Structures were evaluated using high performance anion...
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