نتایج جستجو برای: chitosan conduit

تعداد نتایج: 24586  

2014
Fatemeh Ajalloueian Hossein Tavanai Jöns Hilborn Olivier Donzel-Gargand Klaus Leifer Abeni Wickham Ayyoob Arpanaei

Novel nanofibers from blends of polylactic-co-glycolic acid (PLGA) and chitosan have been produced through an emulsion electrospinning process. The spinning solution employed polyvinyl alcohol (PVA) as the emulsifier. PVA was extracted from the electrospun nanofibers, resulting in a final scaffold consisting of a blend of PLGA and chitosan. The fraction of chitosan in the final electrospun mat ...

2016
Bi Foua Claude Alain Gohi Hong-Yan Zeng A Dan Pan

Pepsin was used to effectively degrade chitosan in order to make it more useful in biotechnological applications. The optimal conditions of enzymolysis were investigated on the basis of the response surface methodology (RSM). The structure of the degraded product was characterized by degree of depolymerization (DD), viscosity, molecular weight, FTIR, UV-VIS, SEM and polydispersity index analyse...

2017
Hashem Rasti Kazem Parivar Javad Baharara Mehrdad Iranshahi Farideh Namvar

This study presents the first ever data of extracting chitin from the Chiton shell, which was then converted to the soluble chitosan by soaking in the 45% NaOH solution. The obtained chitin and chitosan were characterized by the seven different methods. Antioxidant activity of the extracted chitosan was also evaluated using the two methods. The shell content was divided into calcium carbonate (...

2017
Xiaoqian Zhang Kecheng Li Ronge Xing Song Liu Pengcheng Li

Chitosan plays an important role in regulating growth and eliciting defense in many plant species. However, the exact metabolic response of plants to chitosan is still not clear. The present study performed an integrative analysis of metabolite profiles in chitosan-treated wheat seedlings and further investigated the response of enzyme activities and transcript expression related to the primary...

2015
Chelsea L. Bueter Chelsea Linnay Bueter Christopher M. Sassetti Jennifer P. Wang Christopher Sassetti Jennifer Wang Jatin Vyas

Chitin is an abundant polysaccharide found in fungal cell walls, crustacean shells, and insect exoskeletons. The immunological properties of both chitin and its deacetylated derivative chitosan are of relevance due to frequent natural exposure and their increasing use in translational applications. Depending on the preparation studied and the endpoint measured, these compounds have been reporte...

2004
Nan Li

In this study, we examined the properties of chitosan-cellulose hydrogel beads as an adsorbent and its application for lead ion adsorption. Chitosan was blended with cellulose to improve the mechanical strength of chitosan hydrogel beads and the chitosan-cellulose hydrogel beads were cross-linked with ethylene glycol diglycidyl ether (EGDE) to enhance their acid-resistant ability. Scanning elec...

2017
Raphaël Riva Anne des Rieux Nicolas Duhem Christine Jérôme Véronique Préat

Chitosan is a nontoxic, biodegradable, and biocompatible polysaccharide of b(1-4)-linked D-glucosamine and N-acetyl-D-glucosamine. This derivative of natural chitin presents remarkable properties that have paved the way for the introduction of chitosan in the biomedical and pharmaceutical fields. Nevertheless, the properties of chitosan, such as its poor solubility in water or in organic solven...

2010
Akram Zamani Lars Edebo Claes Niklasson Mohammad J. Taherzadeh

The temperature-dependent hydrolysis and solubility of chitosan in sulfuric acid solutions offer the possibility for chitosan extraction from zygomycetes mycelia and separation from other cellular ingredients with high purity and high recovery. In this study, Rhizomucor pusillus biomass was initially extracted with 0.5 M NaOH at 120 °C for 20 min, leaving an alkali insoluble material (AIM) rich...

Journal: :The Journal of biological chemistry 2011
Chelsea L Bueter Chrono K Lee Vijay A K Rathinam Gloria J Healy Christopher H Taron Charles A Specht Stuart M Levitz

Chitin is an abundant polysaccharide found in fungal cell walls, crustacean shells, and insect exoskeletons. The immunological properties of both chitin and its deacetylated derivative chitosan are of relevance because of frequent natural exposure and their use in medical applications. Depending on the preparation studied and the end point measured, these compounds have been reported to induce ...

2006
Chalonglarp TANGSADTHAKUN Sorada KANOKPANONT Neeracha SANCHAVANAKIT Tanom BANAPRASERT Siriporn DAMRONGSAKKUL

Biopolymer blends between collagen and chitosan have the potential to produce cell scaffolds with biocompatible properties. In this study, porous scaffolds were fabricated by freeze drying the solution of collagen and chitosan and crosslinked by dehydrothermal treatment (DHT). Various types of scaffolds were prepared by varying compositions of collagen and chitosan. The scaffolds were fully cha...

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