Chitin characterisation

Peesan M, Rujiravanit R, Supaphol P (2003) Characterisation of beta-chitin/poly(vinyl alcohol) blend films. Polym Test 22 381-387... 

A. Einbu, Characterisation of Chitin and a Study of its Acid-Catalysed Hydrolysis, Ph.D. thesis, Norwegian University of Science and Technology (NTNU), January, 2007. 

Einbu, A. 2007. Characterisation of chitin and a study of its acid-catalysed hydrolysis. PhD dissertation, Norwegian University of Science and Technology, Trondheim, Norway. 

Shirai, K., Palella, D., Castro, Y, Guerrero-Legarreta, I., Saucedo-Castaneda, G., Huerta-Ochoa, S., and HaU, G.M. 1998. Characterisation of chitins from lactic acid fermentation of prawn wastes. In Advance in Chitin Science, eds. R.H. Chen and H.C. Chen, 3 103-110. Taiwan, China Elsevier. 

PU based on the use of pristine castor oil were reviewed in 2010 [9, 10], including preparation and properties of an interpenetrating network with other polymers. Recent additions to this topic include work by Larock and co-workers [13, 14] on waterborne PU and their silica composites a kinetic study of the reaction of castor oil with 4,4 -methylene diphenyl diisocyanate to produce an elastomeric matrix [15] the rheology of waterborne PU dispersions for coating applications, prepared with castor oil and isophorone diisocyanate (IPDI) [16] (Scheme 3.7) and the synthesis and characterisation of gelled materials arising from the reaction of isocyanate-bearing chitin or chitosan with castor oil [17]. 

M. A. Minnath, Development And Characterisation Of Thermoplastic Polyurethane-Natural Rubber/Epoxidised Natural Rubber (TPU-NR/ ENR) Blends And Their Chitin Reinforced Composites , PhD thesis, Calicut University, 2013. 

Chang PR, Jian R, Yu J, Ma X (2010b) Fabrication and characterisation of chitosan nanoparticles/ plasticised-starch composites. Food Chem 120 736-740 Chang PR, Jian R, Yu J, Ma X (2010c) Starch-based composites reinforced with novel chitin nanoparticles. Carbohydr Polym 80 421 26... 

Several kinds of extracellular depolymerases have been purified and characterised from various microorganisms [187, 189,191, 195-197], All the depolymerases are comprised of an N-terminal catalytic domain, a C-terminal substrate binding domain, and a linker region connecting the two domains. Similar catalytic and binding domains have also been identified in other depolymerising enzymes that hydrolyse water-insoluble polysaccharides such as cellulose [198], xylan [198,199], and chitin [200], The catalytic domain contains a lipase box pentapeptide [Gly-Xi-Ser-X2-Gly] as the active site, which is common for serine hydrolase [201]. Further detailed aspects on the structure and mechanisms of PHA depolymerase (EC 3.1.1.76) can be found elsewhere [202]. 

Chitin and its deacetylated derivative chitosan are suitable bioplatforms that can be further improved by targeted functionalisation for skin repair. For example, the unique biological properties of chitosan characterised with human cell biocompatibility, human serum biodegradability, non-toxicity, antibacterial and haemostatic properties justify the use of this biopolymer in skin repair processes. The haemostatic activity of chitosan is exploited in early treatment of wounds [28], especially in large injuries subjected to heavy bleeding [29]. Many haemostatic products on the market consist thus, fully or partially, of chitosan. Moreover, chitosan aids to a rapid closure of fuU-thickness wounds due to its supportive effect to the fast growing of new blood vessels (angiogenesis) in the injured tissue [30]. Chitin and chitosan can be... 

Ohtakara, A. Ogat, H. (1984). Purification and characterisation of chitosanase from Streptomyces griseus. Ed. J. p. Zikakis, In Chitin, Chitosan and Related Enzymes, (147-159), Academic Press. 

---