Showing papers in "International Journal of Biological Macromolecules in 2008"

TL;DR: The main chemical modifications of chitosan that have been proposed in the literature are reviewed and a wide range of derivatives with a broad range of applications are presented.

TL;DR: Fucoidan, a group of sulfated heteropolysaccharide, was extracted from Laminaria japonica, an important economic alga species in China as mentioned in this paper.

TL;DR: In this paper, a series of alkene-functional polymers were synthesized by controlled polymerization techniques in order to investigate and compare the efficiency and orthogonality of both photochemically and thermally initiated thiol−ene click coupling reactions.

TL;DR: Hydrolyzed fucoidans, from sporophyll of Undaria pinnatifida, were used to determine the effects of molecular weight (Mw) and hydrolysis conditions on cancer cell growth and suggest that anticancer activity of fu coidans could be significantly enhanced by lowering their Mw only when they are depolymerized by mild condition.

TL;DR: Compared with other commercially available hydrocolloids like xanthan gum, guar gum and locust gum ZW3 EPS showed much better emulsifying capability and was glucogalactan in nature.

TL;DR: Ultra-fine gelatin fibers were successfully fabricated by electrospinning from the solutions of Nile tilapia skin-extracted gelatin in either acetic acid or formic acid aqueous solutions, and a combination between smooth and beaded fibers was observed.

TL;DR: Analyses of fluorescence spectra, viscosity measurements and molecular modeling of IOC-DNA interactions indicate that IOC is a minor groove binder of ct-DNA and preferentially binds to AT rich regions.

TL;DR: These polysaccharides showed significant activation of phenylalanine-ammonia lyase (PAL), lipooxygenase (LOX) and glutathione-S-transferase (GST) defence enzyme activities in tobacco plants.

TL;DR: CLEA of subtilisin has good stability in nonpolar organic solvents and it has high thermal stability up to 60 degrees C and therefore can be used as a catalyst for the biotransformation of compounds which are not soluble in aqueous medium.

TL;DR: The chemical modification of chitin and chitosan by phosphorylation is expected to be biocompatible and is able to promote tissue regeneration and be able to bring new or improved properties.

TL;DR: Results of X-ray diffraction analyses indicated that the intensity of diffraction peak at 19 degrees of PVA became lower and broader with increasing the amount of GA in the CS/PVA/GA ternary blend film.

TL;DR: Preliminary immunological tests in vitro showed CPP could stimulate concanavalin A (ConA)- or lipopolysaccharide (LPS)-induced lymphocyte proliferation in a dose-dependent manner.

TL;DR: The laminated films exhibited higher ultimate tensile strength (UTS) than the single whey protein films (260% and 200% in the Whey-zein-glycerol and whey-ZEin-olive oil films, respectively).

TL;DR: Dynamic viscoelastic properties of collagen solutions with concentrations of 0.5-1.5% (w/w) were characterized by means of oscillatory rheometry at temperatures ranging from 20 to 32.5 degrees C and showed a shear-thinning flow behavior.

TL;DR: Chitinous material isolated from the mycelium of seven species of Basidiomycetes to evaluate the possibility of using fungal biomass as a source of chitin and chitosan characterised for its purity, degree of acetylation and crystallinity.

TL;DR: The structure of aggregates formed by the globular protein beta-lactoglobulin (beta-lg) after heat induced denaturation was studied using light scattering and size exclusion chromatography and the influence of varying the pH above the iso-electric point was investigated in the absence of added salt.

TL;DR: High yield and high degree of substitution (DS) and the solubility of the polymer was improved and the P-chitosan showed less thermal stability and crystallinity than the chitan, due to the phosphorylation.

TL;DR: Fish scales, which are hitherto discarded as waste, were collected and cleaned thoroughly, hydrolyzed under controlled acidic conditions, neutralized and made in to a sheet, i.e., fish scale collagen sheet (FCS), characterized for its infrared spectroscopy, thermo-gravimetric analysis, scanning electron microscopy, and mechanical properties.

TL;DR: The potential application of the CS/PEGDA film as wound dressing material was evaluated in vitro by using mouse fibroblasts (L929) as reference cell lines, indirect cytotoxicity assessment indicated that CS/ PEGDA films were nontoxic to L929 cell.

TL;DR: The results showed that modified sAPSs inhibited IBDV to infect CEF significantly in comparison with non-modified APS(t), which indicated that sulfated modification could enhance the antiviral activity of the APS, by which it would be expected to develop a new-type antiviral drug.

TL;DR: Correlation analysis indicated that most structural parameters were positively correlated with thermal properties with few exceptions, whereas the content of fraction fa' ("'" stands for molar-based chain length ratio) was negatively correlated with the thermal properties.

TL;DR: The interaction between xanthan and selected bivalent cations was studied by means of conductometry, viscometry, and nuclear magnetic resonance spectroscopy to propose a possible structure of a chelate-like complex which involves the pyruvate units at the terminal ends of the side chains as the main binding sites.

TL;DR: The results suggested that the spruce AcGGM and GGM are potentially important as additives with immuno-potentiating and antioxidant properties in food products and pharmaceutical formulations.

TL;DR: Results demonstrated that L. barbarum polysaccharides administration significantly increases glycogen level and anti-oxidant enzyme activities, and decreased malondialdehyde level and creatine kinase activities in skeletal muscle.

TL;DR: It seems that the beta-chitin scaffolds are useful in the tissue-engineering field because of its abundance, biodegradability, non-toxicity, chemical inertness and biocompatible properties.

TL;DR: The impact of homogalacturonans deficiency on the cell wall porosity of Arabidopsis thaliana QUA1 mutant was investigated using NMR measurements of protons mobility interpreted in terms of pore size variations at nanometer and micrometer scales to inform about the porosity network density and heterogeneity.

TL;DR: To fabricate a biomimetic nanostructured bicomponent scaffolds, two types of chitin/silk fibroin (SF) nanofibrous scaffolds (blend scaffolds and hybrid scaffolds) were prepared by electrospinning or simultaneous electrosp spinning of ch itin/SF solutions.

TL;DR: The covalently immobilized Saccharomyces cerevisiae alcohol dehydrogenase to magnetic Fe(3)O(4) nanoparticles via glutaraldehyde coupling reaction was studied and enhanced thermal stability and good durability in the repeated use after recovered by magnetic separations.

TL;DR: Chitin-based polyurethane elastomers (PUEs) were synthesized by step growth polymerization techniques using poly(epsilon-caprolactone) (PCL) varying diisocyanate and chain extender structures in accordance with proposed PUEs structure and crystallinity showed that crystallinity decreased from aliphatic to aromatic characters of the diisOCyanates used in the final PU.

TL;DR: The levan solutions exhibited the pseudoplastic behavior, which was characterized by the power law model, and the exponential equation was favorably applied to describe the effect of concentration on the apparent viscosity of the levan polysaccharides.