Results 141 to 150 of about 1,148 (156)
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Antifungal effect of chito-oligosaccharides with different degrees of polymerization
European Journal of Plant Pathology, 2014Chitosan, obtained from chitin by partial N-deacetylation, shows little or no toxicity towards mammalian cells, is biodegradable, and non-allergenic. It is known that chitosan may have antifungal properties, but the effect of defined chitosan or chito-oligosaccharides (CHOS) with different degree of polymerization is not well known.
Md. Hafizur Rahman +4 more
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Immunopotentiating Effect of N-Acetyl-Chito-Oligosaccharides
1986In our previous papers on this subject (1, 2), we revealed that chit in and chitosan were able to display growth-inhibitory effects against tumor cells or pathogenic microbes inoculated in the peritoneal cavity of mice. The action mechanism of both polysaccharides was assumed to involve the active tion of phagocytic cells attracted to the peritoneal ...
S. Suzuki +4 more
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Detection of chitinase activity by 2-aminobenzoic acid labeling of chito-oligosaccharides
Analytical Biochemistry, 2009Chitinases are hydrolases capable of hydrolyzing the abundant natural polysaccharide chitin. Next to artificial fluorescent substrates, more physiological chito-oligomers are commonly used in chitinase assays. Analysis of chito-oligosaccharides products is generally accomplished by UV detection.
Ghauharali-van der Vlugt, Karen +4 more
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A chitosanase from Paecilomyces lilacinus with binding affinity for specific chito‐oligosaccharides
Biotechnology and Applied Biochemistry, 2005A purple‐spore, rhizosphere‐inhabiting nematophagous fungus, further identified as Paecilomyces lilacinus, was found to grow on chitosanase‐detecting plate. An induced endochitosanase having a molecular mass of 23 kDa was purified from the culture medium by a single cation‐exchange column‐chromatography step.
Yi-Yun, Chen +3 more
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Effect of chito-oligosaccharides over human faecal microbiota during fermentation in batch cultures
Carbohydrate Polymers, 2016Chitosan with high number of deacetylated units, its reacetylated derivative and COS obtained through an enzymatic treatment with chitosanase were tested in pH controlled batch cultures to investigate the ability of the human faecal microbiota to utilise them.
Inmaculada, Mateos-Aparicio +2 more
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Phytomedicine, 2014
Phenylethanoid glycosides, the main active ingredients in Fructus Forsythiae extract possesses strong antibacterial, antioxidant and antiviral effects, and their contents were higher largely than that of other ingredients such as lignans and flavones, but their absolute bioavailability orally was significantly low, which influenced clinical efficacies ...
Wei Zhou +5 more
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Phenylethanoid glycosides, the main active ingredients in Fructus Forsythiae extract possesses strong antibacterial, antioxidant and antiviral effects, and their contents were higher largely than that of other ingredients such as lignans and flavones, but their absolute bioavailability orally was significantly low, which influenced clinical efficacies ...
Wei Zhou +5 more
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Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 1987
We describe the synthesis of N-trifluoroacetyl chito-oligosaccharides and their use as ligands to probe the binding sites of wheat-germ agglutinin, a lectin specific for N-acetylglucosamine. The binding is monitored using intrinsic protein fluorescence, which is due to tryptophan side-chains.
P, Gatellier, J P, Grivet, F, Delmotte
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We describe the synthesis of N-trifluoroacetyl chito-oligosaccharides and their use as ligands to probe the binding sites of wheat-germ agglutinin, a lectin specific for N-acetylglucosamine. The binding is monitored using intrinsic protein fluorescence, which is due to tryptophan side-chains.
P, Gatellier, J P, Grivet, F, Delmotte
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[The inactivating effect of chito-oligosaccharides on TMV particles in vitro].
Bing du xue bao = Chinese journal of virology, 2008To confirm the inactivating effect of chito-oligosaccharides on Tobacco mosaic virus (TMV) par ticles in vitro, the difference of TMV pathogenicity was evaluated according to the decrease of local lesion numbers after inoculating with TMV mixed with chito-oligosaccharides (DP3-10) in Nicotiana glutinosa, and the virion structural change was studied by ...
Wen-Jing, Shang +4 more
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2021
The author retains copyright of this thesis. It must only be used for personal non-commercial research, education and study. It must not be used for any other purposes and may not be transmitted or shared with others without prior permission. For further terms on this licence: https://rightsstatements.org/page/InC-EDU/1.0/?language=en Contact ...
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The author retains copyright of this thesis. It must only be used for personal non-commercial research, education and study. It must not be used for any other purposes and may not be transmitted or shared with others without prior permission. For further terms on this licence: https://rightsstatements.org/page/InC-EDU/1.0/?language=en Contact ...
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Eco-friendly enzymatic approaches in Chito oligosaccharide (COS) preparation and its applications
Chitin is the 2nd most abundant polymer on the earth, is mainly found in crustacean shells, yeast, and fungi. Chitin is neutral and Insoluble in water and organic solvents due to its composite polymeric form with more degree of acetylation (DA). Chitosan is the Derivative of chitin, deacetylated chitin, basic, cationic in nature and insoluble in most ...openaire +1 more source