Results 21 to 30 of about 3,625 (178)

Chitooligosaccharide from Pacific White Shrimp Shell Chitosan Ameliorates Inflammation and Oxidative Stress via NF-κB, Erk1/2, Akt and Nrf2/HO-1 Pathways in LPS-Induced RAW264.7 Macrophage Cells

Foods, 2023
Chitooligosaccharide (COS), found in both insects and marine sources, has several bioactivities, such as anti-inflammation and antioxidant activities. However, the mechanism of shrimp shell COS on retardation of inflammatory and antioxidant effects is ...
Lalita Chotphruethipong, Pithi Chanvorachote, Ratchaneekorn Reudhabibadh, Avtar Singh, Soottawat Benjakul, Sittiruk Roytrakul, Pilaiwanwadee Hutamekalin   +6 more
doaj   +1 more source

Determination of the Deacetylation Degree of Chitooligosaccharides [PDF]

Marine Drugs, 2017
The methods for determination of chitosan content recommended in the Chinese Pharmacopoeia and the European Pharmacopoeia are not applicable for evaluation of the extent of deacetylation (deacetylation degree, DD) in chitooligosaccharides (COS). This study explores two different methods for assessment of DD in COS having relatively high and low ...
Yao Jiang, Chuhan Fu, Sihui Wu, Guihua Liu, Jiao Guo, Zhengquan Su   +5 more
openaire   +3 more sources

Crystal structure of ChbG from Klebsiella pneumoniae reveals the molecular basis of diacetylchitobiose deacetylation

Communications Biology, 2022
Structural and functional characterization of Klebsiella pneumonia ChbG (which lacks sequence homology) reveals the mechanism of chitooligosaccharide processing by ChbG.
So Yeon Lee, Bashu Dev Pardhe, Tae-Jin Oh, Hyun Ho Park   +3 more
doaj   +1 more source

Dietary chitooligosaccharide supplementation alleviates intestinal barrier damage, and oxidative and immunological stress in lipopolysaccharide-challenged laying hens

Poultry Science, 2022
: This study aimed to investigate the effects of chitooligosaccharide (COS) on intestinal barrier, antioxidant capacity, and immunity of lipopolysaccharide (LPS)-challenged laying hens.
Y.F. Gu, Y.P. Chen, R. Jin, C. Wang, C. Wen, Y .M. Zhou   +5 more
doaj   +1 more source

Bactericidal Action of Shrimp Shell Chitooligosaccharide Conjugated with Epigallocatechin Gallate (COS-EGCG) against Listeria monocytogenes

Foods, 2023
The antibacterial effect of chitooligosaccharide conjugated with five different polyphenols, including catechin (COS-CAT), epigallocatechin gallate (COS-EGCG), gallic acid (COS-GAL), caffeic acid (COS-CAF), and ferulic acid (COS-FER), against Listeria ...
Jirayu Buatong, Ajay Mittal, Pimonsri Mittraparp-arthorn, Suriya Palamae, Jirakrit Saetang, Soottawat Benjakul   +5 more
doaj   +1 more source

Facile Method for Surface-Grafted Chitooligosaccharide on Medical Segmented Poly(ester-urethane) Film to Improve Surface Biocompatibility

Membranes, 2021
In the paper, the chitooligosaccharide (CHO) was surface-grafted on the medical segmented poly(ester-urethane) (SPU) film by a facile two-step procedure to improve the surface biocompatibility.
Yifan Liu, Zhengqi Liu, Ya Gao, Weiwei Gao, Zhaosheng Hou, Yuzheng Zhu   +5 more
doaj   +1 more source

Anti-Inflammatory Activity of Chitooligosaccharides in Vivo [PDF]

Marine Drugs, 2010
All the reports to date on the anti-inflammatory activity of chitooligosaccharides (COS) are mostly based on in vitro methods. In this work, the anti-inflammatory activity of two COS mixtures is characterized in vivo (using balb/c mice), following the carrageenan-induced paw edema method.
Fernandes, João C., Spindola, Humberto, Sousa, Vanessa de, Santos-Silva, Alice, Pintado, Manuela E., Malcata, Francisco Xavier, Carvalho, João E.   +6 more
openaire   +5 more sources

Antibacterial Activity of Chitooligosaccharides

Zeitschrift für Naturforschung C, 2008
The aim of this study was to investigate the antibacterial activity of chitooligosaccharide, prepared by partial acid hydrolysis of chitosan, and of an aminoglycosylated derivative, prepared by reductive alkylation of the chitooligosaccharide, against E. coli and S. aureus.
Luis, Lillo, Julio, Alarcón, Gerardo, Cabello, Carlos, Céspedes, Claudia, Caro   +4 more
openaire   +2 more sources

Potential Medical Applications of Chitooligosaccharides

Polymers, 2022
Chitooligosaccharides, also known as chitosan oligomers or chitooligomers, are made up of chitosan with a degree of polymerization (DP) that is less than 20 and an average molecular weight (MW) that is lower than 3.9 kDa. COS can be produced through enzymatic conversions using chitinases, physical and chemical applications, or a combination of these ...
openaire   +2 more sources

Development of enzymatically produced chitooligosaccharide from shrimp industrial waste: opportunity and challenge

Squalen, 2010
Since identified having better properties such as solubility in water and bioactivities comparedto its polymer form, chitooligosaccharide has obtained great attention either from researcher andindustries.
Ekowati Chasanah
doaj   +1 more source