Chitosan
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This document discusses chitin and chitosan. It provides information on their origin from sources like crustacean shells and insect exoskeletons. It describes their physico-chemical properties and how chitosan is derived from chitin through deacetylation. Various applications of chitosan are listed in areas like water treatment, paper production, medicine, cosmetics, biotechnology, agriculture, and food. Key properties exploited include antimicrobial effects, film forming ability, and binding capacity. Examples of specific uses include flocculation, filtration, wound dressings, drug delivery, and more.
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Chitosan
- 1. By/ Huda Eid AbdelWahab
- 2. 2 Origin and sources Physico-chemical properties Applications and uses
- 3. 3 Crustacean shells, insect exoskeleton and some fungi = mainly chitin.
- 5. 5 硫(1 4) linked D-glucose units 硫(1 4) linked N-acetyl-D-glucos- 2-amine units 硫(1 4) linked D-glucos-2-amine units Degree of DeAcetylation > 60%
- 6. 6
- 7. -OH: esterification, etherification, oxidation,Elimination, protection reactions -NH2: amidation, reduction, mono-, di- and trialkylation (electrophile subsitution), protection reactions 7
- 8. Complexation ability metal ions anionic polymers amino acids, proteins, DNA, cells dyes fats and cholesterol 8
- 9. SYNTHESIS OF SOME TEREPHTHALOYL THIOUREA CROSS-LINKED CARBOXYMETHYL CHITOSAN HYDROGELS 9
- 10. SYNTHESIS OF SILICA-CHITOSAN HYBRIDS FOR ANTIWETTING COATINGS 10
- 11. DEVELOPING A CHITOSAN SUPPORTED IMIDAZOLE SCHIFF-BASE FOR HIGH-EFFICIENCY GENE DELIVERY 11
- 12. Characterization of a Conjugate between Rose Bengal and Chitosan for Targeted Antibiofilm and Tissue Stabilization Effects as a Potential Treatment of Infected Dentin 12
- 13. 13
- 14. N-Phthaloylated Chitosan as an Essential Precursor for Controlled Chemical Modifications of Chitosan 14
- 15. 15
- 16. Synthesis And Characterization Of Chitosan Bi guanidine Hydrochloride Under Microwave Irradiation 16
- 18. 18
- 19. 19
- 20. 20
- 21. 21
- 22. SYNTHESIS ROUTE TO THE CHITOSAN DERIVATIVES OF OCTADECYL-QUATERNIZED CARBOXYMETHYL CHITOSAN 22
- 23. SYNTHESIS OF PALMITOYL GLYCOL CHITOSAN 23
- 24. 24 1-Water treatment 2-Paper Removal of metal ions Flocculant/coagulant (proteins, dyes, aminoacids) Filtration Surface treatment Photographic paper Carbonless copy paper Application Examples
- 25. 25 3-Medical 4- Cosmetics Bandages, sponges Artificial blood vessels Blood cholesterol control Tumor inhibition Skin burns, artificial skin Eye humor fluid Contact lenses Controlled release of drugs Nanoparticles for drug delivery Make-up powder Nail polish Mosturizers
- 26. 26 5- Biotechnology 6- Agriculture Enzyme/cell immobilization Protein separation Chromatography Glucose electrode Seed/leaf coating Fertilizer Controlled agrochemical release
- 27. 27 7- Food Removal of dyes and acids Preservative Color stabilization Animal feed additive As dietary food Main properties used: antimicrobial , film forming, binding capacity.