chitosan

The chitosan-chondroitin sulfate blend film, which had special curvature, was used to construct rabbit corneal endothelium in vitro.

Chitosan has good antibacterial property, and it has been used in antibacterial finishing of fabrics.

Chitin was an abundant natural resource, and chitosan was the product of the deacelation reaction of chitin.

Chitosan has an obviously absorptive effect to fat, and has been used to make latest diet pills.

A complex coacervation method was used to prepare aspirin microcapsule using chitosan and Gum-arabic as the wall materials.

Chitosan has been widely used in biomedicine field due to its good biocompatibility, biodegradation and bioactivity.

Results: Chitosan membrane showed no toxicity and did not cause hemolysis, pyrogen or hyperergia.

With regard of these review, we suggested chitosan could be a potential material for periodontal regeneration.

Chitosan was able to repair the damaged spinal cord so that it could carry signals from the animal's body to its brain.

The invention relates to a plant stress-resistant inducer, which takes Chitosan oligosaccharide solution as an effective active component.

The results showed that the silver containing chitosan fibers was better than chitosan and viscose rayon fibers in antimicrobial properties.

With the deepening of chitosan and its derivatives research, the utilization value of this kind of renewable resources would increase.

Objective To evaluate the feasibility of repairing the long defects in rabbits by double-bridging technique and chitosan-collagen chambers.

Conclusion Chitosan is of great value and has splendid future as a biomaterial in peripheral nerve regeneration.

Conclusions Chitosan and its water soluble derivatives have no cytotoxicity.

Chitosan is widely used in textiles dyeing and finishing and its application may improve the dye-uptake and reduce the salt consumption .

Chitosan was the deacetyl chitin, and the biological characteristics of chitosan and its application in broiler production were reviewed.

The invention discloses chitosan oligosaccharide chelated copper and a preparation method thereof.

The results show that it is possible to prepare chitosan from the sheet of choral quadricarinatus.

The invention discloses selenium chitosan oligosaccharide and a preparation method thereof.

The invention discloses a chitosan oligosaccharide chelating ferrous and a preparation method thereof.

Chitosan is the only alkaline polysaccharose in the natural world, which has good bioadhension, biodegradability and biocompatibility.

CONCLUSION Chitosan microspheres could prolong the residence time of drug in the nasal cavity and increase the bioavailability of etoposide.

The result showed that, immersion under pressurized condition could prepare chitosan with a higher degree of deacetylation and hi. . .

The structural characteristics of chitosan make it have particular physical and chemical properties and biological activity.

The immobilized superoxide dismutase can be prepared by crosslinking glutaraldehyde on chitosan, and possessed good properties.

Chitosan has been proved to be able to low serum lipid level, which might affect the genesis and development of AS.

One aspect of the disclosure herein contemplates a composite film comprising lysozyme incorporated within a chitosan polymer matrix.

Addition of sodium alginate, sodium polyacrylate, and glyceryl alcohol entirely increases the light transmission of the chitosan membrane.

Results suggest that the Konjac glucomannan-chitosan blend film has the properties of good biodegradability and cell compatibility.

Finally, we studied the characteristic of the microparticles composed of chitosan and liposomes as the carrier of oligonucleotide(ODN).

This paper introduces the structural characteristics and important chemical properties of chitosan, and the applications of its derivatives.

Chitosan has been widely applied on the industry of effluent treatment owing to its good adsorptive characters and chemical properties.

The presence of a large excess of chitosan gives rise to a second mechanism of interaction.

The invention relates to a chitosan-immobilized allinase and a method for preparing allantolin allicin.

Research and application of natural polymer flocculant-chitosan and its ramifications on wastewater treatment are reviewed in recent years.

The invention discloses a chitosan oligosaccharide chelating Zn and a preparation method thereof.

CONCLUSION The chitosan nanoparticles will not completely release the loaded drug without a specific enzyme.

[Ingredients] Health Hawthorn, Ilex, cassia, American Ginseng, chitosan, fructooligosaccharides, L-carnitine, malic acid peptide.

OBJECTIVE To investigate the affinity of N-succinyl-chitosan samples to cancer cells, and select the best one as the drug targeting carrier.

In this study, with the sulfuric acid solution as the crosslinker, chitosan bioadhesive microspheres were prepared via ionic crosslinking.

The results show that the prepared film is better than the chitosan film and can be used as coating film of slow-release fertilizers.

Meanwhile, the relative properties of chitosan applied to administration for the colon-specific was researched.

Thus, microparticles composed of chitosan and liposomes may be a preeminently potential drug carrier.

The low molecular weight chitosan showed good film-forming effect and ideal anti-bacterium effect as well.

Chitosan microspheres, as a novel drug delivery system, have been widely investigated in recent years.

The purpose of this study is to covalently modify adenoviral capsid with chitosan, a cationic and natural polymer.

The invention relates to salbutamol modified guanidinated chitosan and a preparation method and application thereof.

Results: Chitosan has no effect on the content of chrysophanol, and solid compositions decreased by 30. 8%.

The hydrophilicity of the blend was effectively enhanced, and accelerated the degradation rate of chitosan.

But could chitosan restore the spinal cord's ability to transmit electrical signals to the brain through a damaged region?

Some chitosan samples with the different degree of deacetylation were determined by the method, the reproducibility was good.

Conclusion: This method can be used to establish the quality control of chitosan hemostatic sponge.

The studies proved the feasibility of the preparation of microcapsule from chitosan for the use in carbonless paper.

By acetylating the chitosan fibers, chitin fibers can be made through a batch process.

Chitosan has been widely used in medical field since its good biological activity, biocompatibility and biodegradability.

Conclusions: The chitosan sponges are effective delivering the antibiotic and reducing the bacteria within the wounds.

The results showed that the absorption of the low concentration free acid by crosslinked chitosan resin obeys the formation of mo. . .

The biodegradability and biocompatibility of a chitosan film were investigated in mice.

Methods Breviscapine chitosan-alginate microcapsules were prepared by coacervation technology.

However, the fact that chitosan shows poor solubility in neutral or basic aqueous media limits its application.

Nanoparticles composed of cholesterol hydrophobic-modified chitosan could not transport across BBB through electrostatic adsorption.

The results indicate that the higher the concentration of chitosan in the capsules , the slower the release rate of capsules.

Conclusion: N-trimethyl chitosan chloride may be used as an absorption enhancer in pharmaceutical preparation.

Chitosan is material from deacetylation of chitin, which from arthropod, coelenterate, annelids, protozoans, part of algae and fungi.

Chitosan (CHN), which exists widely in nature, is a natural macromolecular material with good biodegradability and biocompatibility.

Objective To explore the clinical value of medical chitosan hydrogel dressing used in hemorrhoidectomy.

The results show that: 1. With the addition of rare earth-chitosan chelate increased, the rate of egg production raise gradually.

The preparation and physical and chemical properties of chitosan and its derivatives are introduced.

The preparation and applications in drug control releasing of chitosan bead, chitosan nanoparticle and, chitosan membrane are introduced.

As an elicitor, chitosan oligomers has an important roles in the interaction between pathogenic fungi and its host.

CONCLUSION The chitosan could be used in the purification procedure of Haitang mixture with simple procedure and fine effect.

It was also found that the degree of N-succinylation had effect on both the solubility and gelation of N-succinyl-chitosan.

Results The chitosan had no toxicity effect to the ciliary movement of toad palate and nasal mucosal morphology of rats.

Conclusion: Chitosan clarification method can replace alcohol-precipitation method in refining of the decoction of Jiangtangtongmai.

Method : The chitosan and glycerine were used as the supplementary materials to prepare gatifloxacin film agent.

Conclusion Chitosan-collagen multiplicity carrier can obviously promote the growth of intrahepatic bile duct epithelial cell.

s Objective To observe the clinical effects of medical chitosan in preventing postoperative cicatricial adhesion of lumbar disc herniation.

Aim: To investigate the effects of Chitosan oligosaccharides (COS) on attenuating menadione-induced stress injury in macrophages.

The results indicated that chitosan could promote fermentation in rumen, increase synthesis of microbe protein and decomposition of fiber.

The new crosslinked chitosan films are expected to be used as controllable degradation biomaterials.

The discussion of the degradation mechanism: Chitosan is not hydrolyze in neutral soak in vitro.

Objective: To develop headspace gas chromatography for the determination of residual solvent in chitosan ester.

It has been reported that chitosan has wound-healing, free radical scavenging and radioprotective effects.

Objective: To prepare glimepiride-chitosan patch and to investigate the activities of transdermal penetration of the patch.

The mechanical properties of films made from the suspensions of blended natural polysaccharides, cellulose and chitosan, are studied.

High degree of deacetylation and low molecular Chitosan L-lactate which has good solubility in water has good antibacterial effects.

Food grade macromolecule chitosan purchased from different company were analysed, and the quality criterion of raw material were determined.

Mitogen-activated protein kinases mediate the oxidative burst and saponin synthesis induced by chitosan in cell cultures of Panax ginseng.

CONCLUSION: The iodine-chitosan complex is a useful preparation for surgical disinfection and sterilization.

Aminoin chitosan and carboxy on the surface of fiber form strong ionic linkage.

The breaking strength and pliability of blended membrane were increased gradually with the increased content of chitosan.

The recent developments of research at home and abroad on depolymerization of chitosan by papain were introduced in this paper.

Methods The folatecoupled chitosan was prepared by the reaction of the activated folate ester with the amine group on the chitosan.

A interior decorative multicolor paint is obtained by chitosan, as paint membrane, mixing with short color fibers and crosslinking agent.

The results showed that the chemical reaction between the chitosan and the wool fiber happened.

Natural polymers, chitin and chitosan, obtained from shells of crab and shrimp has been widely used in various fields.

The Chitosan oligosaccharide prepared in this invention is characterized by good water solubility, high productivity and low cost.

In this thesis, works focus on the application of chitosan and methacrylate on drug controlled release and water pollution respectively.

The degree of deacetylation has a great effect on the physiochemical and bioactive properties of chitosan.

The presence of chitosan aggregates affects the viscoelastic properties and reinforces the hydrogel network.

The localization of the activity of immobilized urease on chitosan membrane was studied by X-ray microanalysis.

Chitosan has many active groups, so many derivatives and many composites can be prepared with other materials.

In this paper a semi-dry method with microwave treatment is described for the deacetylation of chitin to obtain chitosan.

Conclusion Polyelectrolyte layer-by-layer coated chitosan-alginate microgels can release payload in a pulsed fashion in vitro.

The results show that the PEGlated chitosan and PEGlated chitosan-folate microspheres can be prepared by inverse crosslinking -emulsion.

CONCLUSION Ionic polymeric method is suitable for preparing the chitosan nanoparticles with small diameter.

As natural polymers, chitin and chitosan had many unique physical, chemical and biological characteristics.

The results showed that Chitosan inhibited the growth of human fibroblast and stimulated the growth of human epidermal keratinocyte.

OBJECTIVE To investigate the chitosan flocculation procedure in purification of Haitang mixture.

The optimum condition of chitosan-coating treatment was determined through orthogonal test, with citrus Tian-cao as material.

But chitosan is only dissolved in some organic acid, therefore its application is limited.

There will be high academic value for the development and application of chitosan as a preservative and its further processing.

Chitosan gel beads were prepared using sodium tripolyphosphate (TPP) and sodium hexametaphosphate (SHMP) composite as crosslinking agents.

The data showed that chitosan derivatives played an active role in suppression of tumour growth and prolongation of survival period.

Compound coagulant CAF has been successfully prepared from chitosan(made from natural chitin), poly aluminum chloride and ferric chloride.

The degradation of the chitosan capsule in the rat cecum medium was evaluated by scanning electron microscope.

Methods: We prepared glimepiride patch with chitosan and polyvinyl alcohol, respectively.

Chitosan gauze treated by lysine can raised affinity with chondrocyte and cause it grow in three-dimension supplied by chitosan gauze.

In this research, shrimp head shell as raw material and using ethanol extract classification precipitation low chitosan.

Chitosan had no effects on the contents of astragaloside IV and polysaccharide, but alcohol obviously decreased the t. . .

The original chitosan carrier is modified to improve the transfection efficiency and the targeted property to respiratory cells.

OBJECTIVE: To review the application status of chitosan gel in the treatment of adhesion following tubal recanalization.

Chitosan is easily modified for the production of polysaccharide matrix objects which is used for anticoagulant.

The film forming properties of an edible film prepared by chitosan with some additives were studied.

Chitosan film for clear, strong, flexible materials, excellent blocking performance of oxygen.

Chitosan is one of the most abundant substance in nature, and it is a multi-functional polymer.

Moving towards this goal, Edwards has developed an improved method for more uniformly embedding chitosan in cotton fibers.

Discussed the biological polymer chitosan and its derivatives form the basic structure of liquid crystal state conditions.

RESULTS Amphiphilic chitosan derivation may form drug loading micelle in the water, which has good drug loading capability.

V. value was lower than 11%. The size of chitosan microspheres could be controlled by using membranes with different pore size.

Alkalimetry is standard method of determining degree of deacetylation of chitosan generally applied in aquaculture and other industry.

An optimal concentration of chitosan in the experiment was selected by measuring of relative electrolytic leakage.

Conclusion: Chitosan is effective to prevent the recurrence of tubal obstruction after interventional recanalization.

The process flows and optimum process parameters for the preparation of chitin, chitosan and CAF are introduced in detail.

Worsted woolen cloth treated by chitosan can obtain good antibacterial property and washing endurance.

The graft modification offered some new functions to chitin and chitosan and enlarged their application fields.

Keeping track of the knowledge about viscometric properties of chitosan was important for it's application and exploiture.

Conclusion The process of chitosan was simple, which could be used to purify the active components of compound Zhenzhutiaozhi capsule.

On the contrary, chitosan-prepared scaffold was hard, without enough elasticity following freeze-dry.

OBJECTIVE: To introduce the research and application of liver targeting chitosan drug nano-carrier system.

Chitosan fiber is prepared by solution spinning and dried at different temperatures and ratios of stretch and shrink.

Cotton fiber consolidated with chitosan has antibacterial function.

As a rich resource and extensive use of natural polymers, the market prospects of chitosan and its derivatives is very significant.

OBJECTIVE To observe the effect of chitosan capsule filled with dexamethasone(DSP) liposome lyophilized powder on colitis in rats.

chitosan; cariogenic bacteria; adhesion of bacteria; plaque.

Furthermore, N-Carboxyethyl chitosan(CEC), with various isoelectric points was synthesized by reaction of acrylic acid with chitosan.

Amphiphilic chitosan derivatives with the biocompatibility have a potential application as controlled release drug carriers.

Conclusion chitosan biomembrane bas inhibition effect on the healing process of the filter surgery.

Study on Chitosan Preservation Films Coating Tricholoma matsutake Sing .

Objective To observe the therapeutic effect of chitosan oral ulcer spray in treatment of recurrent aphthous ulcer(RAU).

The above study suggested that chitosan is effective in improving surimi texture and qualities. It is promising to apply chitosan to food.

Next Cho tested whether a dose of chitosan could prevent large molecules from leaking from damaged spinal cord cells.

Finally, chitosan is very abundant, and its production of low cost and ecologically interesting.

The paper is a review about synthesis, characters and applications of oligo- sugar of chitin and chitosan.

OBJECTIVE To investigate a dual hepatocyte-targeting preparation of norcantharidin with model chitosan carrier.

The technique and formula of gelatinous confections with chitosan were determined.

In addition, the technique of phenolic waste water treatment with chitosan and its derivative was discussed.

It is researched that the degree of deacetylation, molecular weight and concentration of Chitosan affect on the effect of finish.

According to the research about chitosan adsorbing metal ions at home and abroad, the comment and prospect was considered in this paper.

Conclusion Taking the place of alcohol, chitosan could be used as good clarifier to deal with the extracts of Lanqin.

As a novel polymeric micellar material for hepatocyte-targeting, galactosylated acyl chitosan was synthesized.

Objective To synthesize N-galactosylated chitosan as hepatocyte-targeting carrier and prepare loading norcantharidin nanoparticles.

Some study achievement of applications of Chitosan in fabric finishing were summarized in this paper.

The results showed that the derivative of Chitosan oligosaccharide C60 has good antioxidant activities.

Chitosan adsorbed Ag ions under certain conditions, and stable antibacterial finishing agent was prepd . therefrom.

The derivatives and composite materials from chitin and chitosan were summarized.

In this paper, the production processes of chitin, chitosan or derivatives from oyster shells of Guangdong has been reported.

Meanwhile this novel kind of chitosan-based self-assembled vesicles has the foreground of application.

Objective: The adsorption mechanism of metal ions on chitosan modified by vanillin(V- CTS )was studied.

The above novel chitosan derivatives have higher adsorption capacity for heavy metal ions.

Through adding different levels of rare earth-chitosan chelate (RECC) in diet for Carassius auratus L.

vinegar; precipitate; chitosan; egg white; gelatin.

The use of natural renewable resources of lignin, tannin, soybean protein, starch and chitosan in wood adhesive was introduced .

Chitosan is characterized by sufficient resource, low price and good biocompatibility, which is a substitute for polylysine.

The bacteria and epiphyte in activated sludge can produce chitosanase and some non-specific hydrolase, which can degrade chitosan.

And, the significant degradation of the chitosan capsule was found in the rat cecum content.

Methods Chitosan was modified with bromo-isobutane and chloroacetic respectively in the presence of sodium hydroxide.

N-phthaloyl chitosan is prepared into suspension solution coated on plain tablets of propranolol hydrochloride.

ConclusionThe fly maggot powder is rich in nutrition. Flyblow chitosan has significant anti-oxidant capability.

This paper reviewed the advancements of application of chitosan as drug carrier in the anti-tumor field.

In addition, the reaction velocity was also affected by degree of deacetylation of chitosan.

In another study the antiproliferative effect of chitosan ester on cultured bovine aortic smooth muscle cells (BASMCs) were observed.

and the modified chitosan has the potential practical value of respiratory diseases, particularly gene therapy of asthma.

The best ratio between Chitosan and clay is various to different types of water bodies.

Fully hydrophobic acylated chitosan was prepared and characterized by elemental analysis, FTIR and 1HNMR.

The recent progress in adsorbents for metal ions based on chitosan and its derivates was summarized in this article.

Results: The wounds treated with the antibiotic-loaded chitosan sponge had significantly less bacteria than the untreated wounds (P 05).

Rare earth-chitosan chelate could reduce the content of cholest in eggs and blood by effecting hepatoenteral circulation.

The trend of degression of chitosan molecular weight becomes slow with delay of reaction.

In addition, chitosan can improve wound healing, hemostasis , anti-viral, anti-inflammatory effects and be used as a drug delivery carrier.

Chitosan was dissolved in trifluoroacetic acid to fabricate CS nanofibers by electrospinning.

Studied the application of crab chitosan in clarifying sugarcane juice.

and carrying out dialyzing and freeze drying to obtain the sulfated chitosan.

The second stage is the deacetylation of the main chain and the cleavage of glycosidic linkage of chitosan, which is exothermic.

the intermission alkali treatment can obtain chitosan of high deacelation degree with high molecule weight.

The invention belongs to the field of medical materials, in particular to chitosan stent and preparation method thereof.

The HA modified chitosan scaffolds has the value of research and development prospect in nervous tissue engineering.

The dyed cotton fabric is undergone chitosan immersion. Its dyeing process could be carried out lower salt addition.

Shandong Guanghao Biological Products Co. , Ltd, Which founded in 2001. Is the largest enterprise in the line of chondroitin and chitosan.

Chitosan is a unique degradable polymer of biological activity.

and 4. adding the extractum, the povidone iodine solution into the chitosan solution, and adding water.

The kinetics of flocculation and removal of Microcystis aeruginosa by chitosan-modified clays was studied.

In this study, "xuan hua-milk" grapes were soaked with chitosan compound at preharvest.

The recent research progress in the construction and application of biosensors based on chitosan-gold nanoparticles is reviewed.

Our aim is to develop a novel type crosslinked chitosan resin (AECTS) with good properties in this paper.

Chitosan was prepared from natural cuttlebone wastes.

XRD patterns showed that the N-phthaloyl-chitosan oligosaccharide can crystallize though there is a bulky substituent group hung from it.

Chitosan is a natural bio-organic resource, second to the cellulose.

In this paper, the preparation of hydroxy ethyl chitosan sulfate was studied.

Degradation rate (DR) of chitosan in the hydrogels decreased with increase of SD.

Synthesis and adsorption properties of calix[6]arene derivatives modified chitosan.

Deacetylation degree has direct effect on properties of chitosan.

Conclusion The Chitosan can inhibits the CNV after corneal alkali burn.

Woven from chitosan fibers, a blood-clotting agent derived from shrimp shells, it absorbs 16 times its weight in blood.

The synthesis of N-succinyl-chitosan and properties were studied.

The effect of ionic strength on the flocculation and removal of Microcystis aeruginosa by clays and chitosan-modified clays were studied.

It is concluded that preparing chitosan by oxido-degradation and enzyme-degradation is a highly promising method.

Chitosan is an ideal microencapsulation material because it is a bio- degradable natural polymer without toxicity.

The present invention relates to the preparation process of chitosan base macroporous high water absorption resin.

The optimum concentration of seed soaked with carboxymethyl chitosan to promote the germination of B. chinensis seeds was 0. 10%.

Objective: To explore the effect of chitosan in prevention recurrence of tubal adhesion.

The chitosan films prepared by wet phase separation was studied.

Chitosan had repaired the damaged cell membranes.

Objective To evaluate the effect of chitosan biomembrane on the rabbit filter surgery.

The clarifying conditions of chitosan were optimized by employing the content of astragaloside IV, total amyloses as indexes.

The effect of chitosan to morphology of nasal mucosa was investigated by nasal medication of rats.

Methods The free amino group in the deacetylated chitosan was determined by linear titration.

The antibacterial ability of chitosan to E. coli was related to the protonation of amino group.

OBJECTIVE To establish a method for determining the deacetylation degree in chitosan by 1H-NMR.

In this paper, the application of chitosan in analytical chemistry has been reviewed, and 43 references were cited.

And chitosan hydrogel can enhance wounds healing of rats.

The chitosan stent is formed by weaving chitosan fibers.

Sustained-release performance of N-phthaloyl chitosan is tested by using coating tablet as example.

The Optimum Condition for Producing Chitosan from Pupa Skin of Silkworm Bombyx Moril L .

Objective Chitosan was used as clarifier in dealing with the extracts of Lanqin.

The article discusses how to improve the sizing properties of chitin size by enzyme degradation of chitosan.

Chitosan had desorption effect on Streptococcus mutans.

it included sol-gel methods of chitosan and alginate.

Chitosan and ion exchange resins can effectly decrease the acidity of kiwi wine.

Chitosan fibers had in recent years found applications various niche end uses such as antimicrobial textiles and wound dressings.

The combination between chitosan and protein was very weak.

The chitosan was prepared from chitin by deacetylating and the degree of deacetylation was 83%.

The process of crease-proof treatments for silk fabrics has been studied with chitosan.

The effect of the cation of chitosan and quaternized chitosan (or CMCTS) is proved again.

Local Antibiotic Delivery Using Tailorable Chitosan Sponges: The Future of Infection Control?

The development and application of chitosan have aroused recently wide interest home and abroad.

The study examine the drug release mechanism of famotidine chitosan microcapsule.

REVIEW OF RESEARCH ON CHITIN AND CHITOSAN FROM FUNGI.

The chitosan adds advantageous properties to the hydrogel such as enhanced cell spreading and adhesion.