Results 171 to 180 of about 153,064 (212)

Preparation and characterisation of chitosans with oligosaccharide branches

Carbohydrate Research, 2002
The trimer 2-acetamido-2-deoxy-D-glucopyranosyl-beta-(1-->4)-2-acetamido-2-deoxy-D-glucopyranosyl-beta-(1-->4)-2,5-anhydro-D-mannofuranose (A-A-M) was reductively N-alkylated onto a fully de-N-acetylated chitosan (F(A)
Kristoffer, Tømmeraas, Magnus, Köping-Höggård, Kjell M, Vårum, Bjørn E, Christensen, Per, Artursson, Olav, Smidsrød   +5 more
openaire   +2 more sources

Characterization of novel galactosylated chitin-oligosaccharides and chitosan-oligosaccharides

International Dairy Journal, 2014
This study determined whether chitin-oligosaccharides and chitosan-oligosaccharides (COS) are suitable acceptor carbohydrates for the LacLM-type β-galactosidase of Lactobacillus plantarum. Enzymatic reactions were carried out with lactose as galactosyl-donor and chitinbiose (N,N′-diacetyl chitobiose), chitintriose (N,N′N″-triacetyl chitotriose) or a ...
Black, Brenna A., Yan, Yalu, Galle, Sandra, Hu, Ying, Curtis, Jonathan M., Gänzle, Michael G.   +5 more
openaire   +1 more source

Synthesis of silica chitosan oligosaccharides nanoparticles

Agro Productividad, 2023
Objective: To obtain chitosan oligosaccharides (COS) and evaluate COS uses for the obtention of nanosystem based on silica as vehicle and compare the COS-silica nanosystem with the chitosan (Chi) precursor system as Chitosan-silica nanosystems. Design/methodology/approach: A combination of hydrolysis chemical and mechanical (microwave assisted) were ...
Salazar-Navarro, Alexis A., Rivera-Reyna, Nallely E., González-Mendoza, Daniel   +2 more
openaire   +1 more source

Antioxidant Activity of N-Carboxymethyl Chitosan Oligosaccharides

Bioorganic and Medicinal Chemistry Letters, 2008
Three N-carboxymethyl chitosan oligosaccharides (N-CMCOSs) with different degrees of substitution (NA: 0.28, NB: 0.41, and NC: 0.54, respectively) were prepared by the control of the amount of glyoxylic acid in the etherification process of chitosan oligosaccharide (COS).
Fang Mao
exaly   +3 more sources

Cellobiohydrolases Produce Different Oligosaccharides from Chitosan

Biomacromolecules, 2016
Chito-oligosaccharides (COSs) are bioactive molecules with interesting characteristics; however, their exploitation is still restricted due to limited amounts accessible with current production strategies. Here we present a strategy for the production of COSs based on hydrolysis of chitosan by using readily available glycosidases.
Gregor, Tegl, Christoph, Öhlknecht, Robert, Vielnascher, Alexandra, Rollett, Andreas, Hofinger-Horvath, Paul, Kosma, Georg M, Guebitz   +6 more
openaire   +2 more sources

Asymmetric wettable polycaprolactone-chitosan/chitosan oligosaccharide nanofibrous membrane as antibacterial dressings

Carbohydrate Polymers, 2023
Wound infection and inflammation hinder the process of wound healing and bother human beings chronically. As a naturally degradable macromolecule, chitosan (CS) has been widely used in antibacterial wound dressings. However, the antibacterial property of chitosan is inhibited by its water insolubility.
Yanhui, Kong, Wenjing, Zhang, Tian, He, Xue, Yang, Wanghua, Bi, Jiwei, Li, Wenzhe, Yang, Weichao, Chen   +7 more
openaire   +2 more sources

Microencapsulation of norfloxacin in chitosan/chitosan oligosaccharides and its application in shrimp culture

International Journal of Biological Macromolecules, 2016
Norfloxacin chitosan/chitosan oligosaccharide microcapsules (NCCM) were prepared by emulsion-chemical crosslinking method. The characteristics of obtained microcapsules were evaluated by scanning electron microscopy, Fourier transform infrared spectroscopy and release experiments.
Ziru, Lian, Rong, Pan, Jiangtao, Wang
openaire   +2 more sources

Application of Feruloyl Oligosaccharides in Degradable Chitosan Film

Journal of Food Science
ABSTRACT The objective of this research was to investigate the effects of how feruloyl oligosaccharides (FOs) on the physical properties, antioxidant activity, and antimicrobial efficacy of chitosan‐based (CS) films.
Yongmei Lyu, Wanjie Mao, Luyi Shen, Zhihan Ge, Kaiqi Li, Shuai Shao, Yueling Shang, Fengwei Li, Yitong Chen, Xiaohong Yu   +9 more
openaire   +2 more sources

The effect of chitosan oligosaccharides on bread staling

Journal of Cereal Science, 2010
Abstract The aim of this work was to investigate the effects of chitosan oligosaccharides and chitosan on the rate of staling and properties of bread crumb and crust. Rates of crumb firming varied with storage time. The possible mechanisms including prevention of amylose–lipid complexation, acceleration of dehydration from both starch and gluten ...
Garry Kerch, Janis Zicans, Remo Merijs Meri   +2 more
openaire   +1 more source

Chitin, Chitosan, Oligosaccharides and Their Derivatives

2010
THE SOURCES AND PRODUCTION OF CHITIN AND CHITOSAN DERIVATIVES Chitin and Chitosan from Terrestrial Organisms Nitar Nwe, Tetsuya Furuike, and Hiroshi Tamura Chitin and Chitosan from Marine Organisms Wolfram M. Bruck, John W. Slater, and Brian F. Carney Chitin and Chitosan from Microorganisms Zorica Knezevic-Jugovic, Zivomir Petronijevic, and Andrija ...
openaire   +1 more source