Chitosan characterization

Desbrieres J, Martinez C et al (1996) Hydrophobic derivatives of chitosan characterization and rheological behaviour. Int J Biol Macromol 19 21-28... 

Brugnerotto, J., Lizardi, J., Goycoolea, F.M., Arguelles-Monal, W., Desbrieres, J., Rinaudo, M. An infrared investigation in relation with chitin and chitosan characterization. Polymer. 42(8), 3569-3580 (2001a)... 

Figure 4.1 Repeat unit of (a) chitin (polyf N-acetyl-p-D-glucosamine)), and (b) chitosan (poly(D-glucosamine). (c) Structure of partially acetylated chitosan characterized by an average degree of acetylation DA.

Many years ago chitin was seen as a scarcely appeahng natural polymer due to the variety of origins, isolation treatments and impurities, but the works of several analytical chemists and the endeavor of an increasing number of companies have qualified chitins and chitosans for sophisticated applications in the biosciences. Chemistry today offers a range of finely characterized modified chitosans for use in the biomedical sciences. Moreover, surprising roles of these polysaccharides and related enzymes are being unexpectedly discovered [351]. 

Nunthanid, J., Laungtana-Anan, M., Sriamornsak, R, Limmatvapirat, S., Puttipipatkhachorn, S., Lim, L. Y. Khor, E. (2004). Characterization of chitosan acetate as a binder for sustained release tablets. Journal of Controlled Release, Vol. 99, 1, (September 2004), pp. (15-26), ISSN 0168-3659... 

Beri, R. G., Walker, J., Reese, E. T., and Rollings, J. E., Characterization of chitosans via coupled size-exclusion chromatography and multiple-angle laser light-scattering techniques, Carb. Res., 238, 11, 1993. 

Xu, Y. and Hanna, M.A.Chitosan/day nanocomposite films preparation and characterization Abstract in 2005 IFT Annual Meeting July 15-20, New Orleans, Louisiana. 

The effectiveness of zeolites in catalysis and separation can often be improved by the textural and chemical properties of the matrices in which they are imbedded. Chitosan gels issued from renewable resources are already used as supports for the preparation of heterogeneous catalysts in the form of colloids, flakes or gel beads [1, 2], In this study we present several methods for the incorporation of zeolites in chitosan matrices and characterize the synergic effect of the components on the properties of the composite. 

Table 7. Characterization of symplexes produced between chitosan and polyacrylic acid of various molecular weights...

El Sherbiny IM, Lins RJ, Abdel-Bary EM, Harding DRK (2005) Preparation, characterization, swelling and in vitro drug release behaviour of poly [N-acryloylglycine-chitosan interpoly-meric pH and thermally-responsive hydrogels. European Polymer Journal 41 2584-2591. 

Z. Wu, W. Feng, Y. Feng, Q. Liu, X. Xu, T. Senkino, A. Fuji, M. Ozaki, Preparation and characterization of chitosan-grafted multiwalled carbon nanotubes and their electrochemical properties, Carbon, vol. 45, pp. 1212-1218, 2007. 

Ghen, X., Yang, H., Gu, Z., and Shao, Z. (2001) Preparation and characterization of HY zeolite-filled chitosan membranes for pervaporation separation. /. Appl. 

Chatterjee, S., Adhya, M., Guha, A. K., and Chatterjee, . P. (2005). Chitosan from Mucor rouxii Production and physico-chemical characterization. Process Biochem. 40,395-400. 

Anal, A.K., Tobiassen, A., Flanagan, J., Singh, H. (2008). Preparation and characterization of nanoparticles formed by chitosan-caseinate interactions. Colloids and Surfaces B Biointerfaces, 64, 104-110. 

Zhang, C., Ping, Q.E., Zhang, H. (2004). Self-assembly and characterization of paclitaxel-loaded N-octyl-O-sulfate chitosan micellar system. Colloids and Surfaces B Biointerfaces, 39, 69-75. 

Ogawa, S., Decker, E.A., McClements, D.J. (2004). Production and characterization of O/W emulsions containing droplets stabilized by lecithin-chitosan-pectin multilayered membranes. Journal of Agricultural and Food Chemistry, 52, 3595-3600. 

Zhang, Y., Yang, Y., Tang, K., Hu, X., Zou, G. (2008). Physicochemical characterization and antioxidant activity of quercetin-loaded chitosan nanoparticles. Journal of Applied Polymer Science, 107, 891-897. 

A.G. Boricha and Z. Murthy, Acrylonitrile butadiene styrene/chitosan blend membranes Preparation, characterization and performance for the separation of heavy metals, J. Membr. Sci., 339(l-2) 239-249, September 2009. 

Van der Lubben, I.M., et al. 2001. Chitosan microparticles for oral vaccination preparation, characterization and preliminary in vivo uptake studies in murine Peyer s patches. Biomaterials 22 687. 

Lim, S.T., et al. 2001. In vivo and in vitro characterization of novel microparticulates based on hyaluronan and chitosan hydroglutamate. AAPS Pharmsci Tech 2 article 20. 

Rossi, S., et al. 2001. Characterization of chitosan hydrochloride-mucin rheological interaction Influence of polymer concentration and polymer mucin weight ratio. Eur J Pharm Sci 12 479. 

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