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This paper reports an attempt to characterize the residues extracted after enzymatic hydrolysis of Cladophora microcrystalline cellulose comprising two crystalline allomorphs of cellulose, Iα and I β . Cellulose I α is preferentially hydrolyzed by Trichoderma cellulase ( Hayashi, Ishihara,...
To develop biodegradable materials with high performance, we prepared a novel waterborne polyurethane (PU) from rapeseed oil based polyol, and then used it to modify the glycerol plasticized starch (PS) to overcome the intrinsic drawbacks of the starch materials, such as poor mechanical...
Starches isolated from rhizomes of two cultivars of edible canna (namely; Thai-green and Thai-purple) were modified by acetylation in order to reduce retrogradation and increase gel stability. Acetylation was carried out by treating starches with 5, 7 and 9% (w/w) of acetic anhydride at room...
Hylon VII and waxy corn starch–water suspensions (30%) were subjected to high pressure treatment at 650 MPa for 3, 6 and 9 min. Cross-polarisation/magic angle spinning (CP/MAS) 13 C NMR, X-ray, HPLC, optical microscopy (LM) and scanning electron microscopy (SEM) were used to monitoring...
When native cellulose is treated by catalytic oxidation with 2,2,6,6-tetramethylpiperidine-1-oxy radical (TEMPO)/NaBr/NaClO under aqueous conditions, significant amounts of carboxylate and aldehyde groups can be introduced on surfaces of cellulose I crystallites and into disordered regions...
The thermal and functional properties of starches from a wild-type corn, and amylose extender25 , dull39 , sugary2 ( su2 ), and sugary1 ( su1 ) corn mutants, all in the same (ExSeed68) genetic background were evaluated and related to their structural features obtained in a previous study. The...
The effects of monovalent cation and anion species on the conformation of gellan chains in aqueous solutions were examined by optical rotation (OR) and fluorescence anisotropy measurements. The OR measurement suggested that a cation species with a large ionic radius aggregates the gellan chains...
The influence of molecular weight and substitution degree of sulfated polysaccharides on their biological activity is considered in majority of works involving the anticoagulant or antiviral properties of these substances. Therefore, the present paper describes the effect of preparation...
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