نتایج جستجو برای: ionotropic gelation

تعداد نتایج: 6400  

Journal: :Macromolecular bioscience 2006
Hossein Omidian Jose G Rocca Kinam Park

A novel approach was developed to prepare a superporous hydrogel with superior mechanical and elastic properties. According to this method, a synthetic monomer was polymerized and crosslinked in the presence of a water-soluble alginate polymer. Later in the process, the alginate part of the synthesized hydrogel was treated with metal cations, which resulted in a hydrogel hybrid with an interpen...

2016
Balaji Venkatesan Anusha Tumala Vimala Subramanian Elangovan Vellaichamy

This data article contains the data related to the research article 'Transient silencing of Npr3 gene expression improved the circulatory levels of atrial natriuretic peptides and attenuated β-adrenoceptor activation-induced cardiac hypertrophic growth in experimental rats' (Venkatesan et al., 2016 [1]). The siRNA-Npr3 loaded chitosan nanoparticles were synthesized using ionotropic gelation met...

Journal: :Biomacromolecules 2012
Therese Andersen Jan Egil Melvik Olav Gåserød Eben Alsberg Bjørn E Christensen

Alginates in the format of scaffolds provide important functions as materials for cell encapsulation, drug delivery, tissue engineering and wound healing among others. The method for preparation of alginate-based foams presented here is based on homogeneous, ionotropic gelation of aerated alginate solutions, followed by air drying. The method allows higher flexibility and better control of the ...

2011
Tittaya Suksamran Praneet Opanasopit Theerasak Rojanarata Tanasait Ngawhirunpat

Purpose: To develop chitosan/alginate microparticles for the mucosal delivery of allergen from dust mite (Dermatophagoides pteronyssinus). Methods: Chitosan/alginate microparticles were prepared by ionotropic gelation. The effects of polymer content, crosslinking agent, and preparation method on the physicochemical characteristics of the microparticles as well as their in vitro cytotoxicity wer...

Journal: :Carbohydrate polymers 2011
Preeyanat Vongchan Yupanan Wutti-In Warayuth Sajomsang Pattarapond Gonil Suchart Kothan Robert J Linhardt

N,N,N-Trimethyl chitosan chloride is capable of forming nanocomplexes with protein through ionotropic gelation. A monoclonal antibody, raised against human liver heparan sulfate proteoglycan and specifically inhibiting hepatocellular carcinoma in vitro, was prepared in nanocomplexes of this modified chitosan. The smallest nanocomplexes (59 ± 17 nm, zeta-potential 16.5 ± 0.5 mV) were obtained at...

2010
S. Debnath D. Datta M. N. Babu R. S. Kumar V. Senthil

The activity of cytarabine was decreased by its rapid deamination to the biologically inactive metabolite uracil arabinoside. This rapid deamination is the reason for the ongoing research for effective formulation of cytarabine that can not be deaminated and exhibit better pharmacokinetic parameters. Protection of cytarabine from fast degradation and elimination was investigated by encapsulatin...

2011
Tofeeq Ur-Rehman

Simple gel formulations may be applied to enhance the systemic and local exposure of potential compounds. The aim of this thesis is the development and characterization of controlled release formulations based on thermoreversible poloxamer gels, which are suitable for novel drug delivery applications. In particular co-solvents (DMSO, ethanol), mucoadhesive polymers (chitosan, alginate) and salt...

2016
Daniel Lio David Yeo Chenjie Xu

Core-shell alginate-poly (lactic-co-glycolic) acid (PLGA) microparticles are potential candidates to improve hydrophilic drug loading while facilitating controlled release. This report studies the influence of the alginate core size on the drug release profile of alginate-PLGA microparticles and its size. Microparticles are synthesized through double-emulsion fabrication via a concurrent ionotr...

2006
Bruno Sarmento Domingos Ferreira Francisco Veiga António Ribeiro

Insulin-loaded nanoparticles were prepared by ionotropic pre-gelation of alginate with calcium chloride followed by complexation between alginate and chitosan. The influence of the pH and stoichiometry relationship between polyelectrolytes providing individual particles with a nano-scale size was assessed by photon correlation spectroscopy (PCS) and scanning electron microscopy (SEM). Insulin– ...

Journal: :Chemistry 2022

There is great contemporary interest in using cleaner technologies through green chemistry and utilizing biopolymers as raw material. Pectin found on plant cell walls, it commonly extracted from fruit shells, mostly apples or citrus fruits. has applications many areas of commercial relevance; for this reason, possible to find available information about novel methods transform pectin pursuing e...

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