Results 381 to 390 of about 174,598 (410)

Chitin and carbon aerogels from chitin alcogels

Carbohydrate Polymers, 2009
Abstract Supercritical point drying of gels is a common technique for the production of a specific category of nano-porous materials called aerogels. We have successfully prepared chitin aerogels by extracting the solvent from the alcogels (gels with an alcohol as the solvent) with carbon dioxide under supercritical conditions.
Chrysoula M. Michailof, Costas Panayiotou, George Stauropoulos, Costas Tsioptsias   +3 more
openaire   +2 more sources

Immunological aspects of chitin and chitin derivatives administered to animals

1999
Chitosan amino groups are recognized by the immune system. Therefore, every derivative of chitin should be assayed immunologically if biomedical applications are sought. Macrophages are activated to various extents by chitin derivatives. Deacetylated chitin (30% deacetylation) and chitin sulfate stimulate the production of circulating antibodies ...
Hiroshi Tamura, I Azuma, Seiichi Tokura
openaire   +2 more sources

Peripheral enzymatic deacetylation of chitin and reprecipitated chitin particles

Bioresource Technology, 2006
The enzymatic deacetylation of various chitin preparations was investigated using the fungal chitin deacetylase (CDA) isolated from Rhizopus oryzae growth medium. Specific extracellular enzyme activity after solid state fermentation was 10 times higher than that after submerged fermentation.
Tangir Ahamed, Willem F. Stevens, Renuka Karuppuswamy, Kyaw Nyein Aye   +3 more
openaire   +3 more sources

Chitin and chitin-based biomaterials: A review of advances in processing and food applications.

Carbohydrate Polymers, 2022
Jiran Lv, Xiaohui Lv, M. Ma, D. Oh, Zhengqiang Jiang, X. Fu   +5 more
semanticscholar   +1 more source

Effect of degree of deacetylation of chitin on the properties of chitin crystallites

Journal of Applied Polymer Science, 1997
In the present article, chitin from crab shell was systematically deacetylated using a NaOH treatment with control of the reaction time. The degree of deacetylation, monitored using solid-state NMR, revealed that the reaction was pseudo-first order. Based on this, swollen and NaOH-saturated particles are proposed as the reaction system. The weight loss
Jia Li, Robert H. Marchessault, J.-F. Revol   +2 more
openaire   +2 more sources

Chitin, chitin synthase and chitin synthase conserved region homologues in Wangiella dermatitidis

1993
The phenomenon of polarized growth leading to yeast and hyphal phenotypes in fungi is dependent upon the coordinated expression of genes and the complex interactions of their products (Drubin, 1991). While certain aspects of polarized growth are beginning to be understood in Saccharomyces cerevisiae, study of this fungus alone may not lead to a ...
Michelle Momany, Paul J. Szaniszlo
openaire   +2 more sources

Progress in chitin analytics.

Carbohydrate Polymers, 2021
M. Tsurkan, A. Voronkina, Y. Khrunyk, M. Wysokowski, I. Petrenko, H. Ehrlich   +5 more
semanticscholar   +1 more source

Chitin and chitosan: Properties and applications

, 2006
M. Rinaudo
semanticscholar   +1 more source

A review of chitin and chitosan applications

, 2000
M. N. R. Kumar
semanticscholar   +1 more source

Drug delivery applications of chitin and chitosan: a review

Environmental Chemistry Letters, 2020
R. Parhi
semanticscholar   +1 more source