G-chitin

The predominant acetamide peak is considered by many authors (17, 24, 25) to be characteristic of decomposition products of N-acetylamino sugars. These materials could enter the water sample from natural processes because they form a major constituent of microbial cell walls (e.g., chitin peptidoglycan). 

Schluter U, Seifert G. Chitin synthesis Inhibition by Nikkomycin in the integument of Manduca sexta An ultrastrcutural and fluroescence microscopic study. J. Invertebrate Pathol. 1989, 53, 387-391. 

Roberts, G. Chitin Chemistry. Macmillan, London (1998a)... 

Peter M.G., Chitin and chitosan in fungi, in Polysaccharides II Polysaccharides from Eukaryotes, Ed. Sternbiichel A., Wiley-VCH, Weinheim Biopolymers, 6,2002, pp. 123-157. 

Goddard ED. Substantivity through cationic substitution. Cosmet Toilet 1987 102 71-80. Hutter JM, Clarke MT, Just EK, Lichtin JL, Sakr A. Colloid titration a method to quantify the adsorption of cationic polymer by bleached hair. J Soc Cosmet Chem 1991 42 87-96. Aruchami M, Gowri N, Sundara-Rajulu G. Chitin deacetylases in invertebrates. In MuzareUi R, Jeuniaux C, Gooday GW, eds. Chitin in Nature and Technology. New York Plenum Press, 1986 263-268. 

Utilization of natural polymers as structural materials is not new. Nature itself has always used, e.g. chitin as the exoskeleton of several molluscs, keratin for thermoinsulation in hair, cellulose offer the structure of higher plants, silk in spiderwebs... 

Cholesterol... Each weighed sample (0.05-0.5 g chitin and H-alg.) was mixed with 25 ml of cholesterol standard solution (150 mg/isopropyl alcohol 1000 ml). After shaking for 10 min and standing for 1 h, a 1 ml portion of the supernatant liquid was taken out and transferred into 3.0 ml of the cholesterol E-Test solution. The mixture was shaken vigorously and left to stand for 5 min at 37 , and then the extinction was measured at 600 nm. For every run of absorbance, titrating and radioactivity experiments a blank solution was made and measured simultaneously. 

In the present method, all hexoses (In the form of either mono- or polysaccharides) are expressed as an equivalent amount of glucose. Methylpentoses are also reported, quantitatively, as an equivalent weight of glucose. Pentoses (monomers or polymers) and hexuronides are recorded as only a fraction of the equivalent weight of hexose. Hexosamines (e.g. chitin) and mannitol are not measured at all. A qualitative indication of the presence of much pentose or hexuronide may be obtained by spectrophotometry. 

G. Chitin und Chitosan E chitine et chitosane Chitin is an ubiquitous polysaccharide found as skeletal material in marine and terrestrial invertebrates and in lower forms of the plant kingdom. 

The variation in particle size appears to have an influence on the time required for equilibrium. The observed results reported that the time required to reach equilibrium is about Ih for particle sizes of 0.2 mm, with a quantity of eadmium removed at an equilibrium of 13.57 mg/g ehitin while for partiele sizes 4.1-6.3 mm, the time neeessary is about 4 h with a weak eapaeity of cadmium removal of about 7.5 mg/g chitin. 

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