Chitosan is commercially obtained through partial deacetylation of chitin, leading to the formation of N-acetyl-glucosamine and d-glucosamine copolymer. Chitosan is a soluble form of chitin, and has been used in various industrial applications including uses in food preservation and packaging (Kausar,...
In trout exposed to 0.75 or 0.075 ppm chitosan, large areas of lamellar fusion were observed. These results show that soluble acidified chitosan is highly toxic to rainbow trout even at low concentrations.doi:10.1016/S0044-8486(99)00359-2Graham Bullock...
Gelatin is a traditional water-soluble biopolymer with the distinctive advantages of nontoxicity, biodegradability, and low cost, and it can act as a sorbent to form complexes with metal ions16,17. However, the amino groups of gelatin (or chitosan) can not only be used as the crosslinking ...
Chitosan is soluble in acid aqueous media at pH 5–6 at 24 °C; sol-gel transition can occur by known gelation techniques such as ionotropic, cross linker-mediated, polyelectrolyte complexed or self-assembled6. Each one provides different characteristics to the gel material formed; cross ...
Hirano S, Yamaguchi Y, Kamiya M (2002) Novel N-saturated-fatty-acyl derivatives of chitosan soluble in water and in aqueous acid and alkaline solutions. Carbohydr Polym 48(2):203–207 Honary S, Ghajar K, Khazaeli P, Shalchian P (2011) Preparation, characterization and antibacterial properti...
The MTS is reduced by cells to formazan, a colored product soluble in an aqueous solution, in a culture medium. This conversion is carried out by mitochondrial dehydrogenase enzymes present in viable cells in the culture. Here, the amount of product formed (formazan), determined from the ...
solubilitydilute aqueous acid (pH <6.5).: soluble form(Coarse ground flakes and powder) colorWhite to Off-white OdorOdorless biological sourceshrimp shells Viscosity800-2000cP1wt. % in 1% acetic acid(25°CBrookfield)(lit.) Water SolubilityH2O: insoluble ...
However, the poor water solubility of chitosan is a major disadvantage. Here, a novel chitosan-sodium carbonate complex was formed by adding a large amount of sodium carbonate to a chitosan/acetic acid solution, which is water-soluble. Fourier transform infrared spectroscopy, energy dispersive ...
It has also been found that chitosan gets easily degraded in the lysozyme in the serum [162,163]. Ma Guang-hui et al. developed a partially quaternized derivative of CS N-((2-hydroxy-3-trimethylammonium) propyl) chitosan chloride (HTCC) to deliver poorly water soluble drugs by oral route...
In general, chemical and physical modification of adsorbents by surfactants aims to enhance the ability of these adsorbents to remove pollutants and achieve higher efficiency50. Cetyl trimethyl ammonium bromide (CTAB) is a cationic detergent, soluble in H2O, less toxic, highly biodegradable surfactant ...