Search
Now showing items 31-40 of 137
Conductivities And Thermal Studies Of Polymeric Electrolytes Based On Poly(epichlorohydrin)/sodium Salts
(Soc Plast Eng, Brookfield, CT, United States, 1999)
Controle analítico das perdas ligno(hemi)celulósicas durante a derivatização química do bagaço de cana
(Universidade Tecnológica Federal do ParanáCuritibaDepartamento Acadêmico de Química e Biologia, 2014-03-10)
The cane sugar bagasse from the sugarcane mills has been used to generate electricity by burning and steam generation, and in the near future it will also be directed to the production of cellulosic ethanol. The bagasse ...
Preparação e caracterização de derivados de enzimas industriais em quitosana
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Engenharia Química - PPGEQ, 2008-04-25)
In this work, several strategies were tested to improve the covalent multipoint attachment of chymotrypsin, carboxypeptidase A and cellulase on chitosan. Hybrid gels with different internal structures were obtained using ...
Improving the properties of chitosan as support for the covalent multipoint immobilization of chymotrypsin
(American Chemical Society, 2008-07)
Changing gel structure and immobilization conditions led to a significant improvement in the covalent multipoint attachment of chymotrypsin on chitosan. The use of sodium alginate, gelatin, or κ-carrageenan, activation ...
Development of alginate microparticles as efficient adsorption matrix for protein recovery
(Elsevier, 2019-05)
Alginate microparticles were prepared by spray drying technique and chemically cross-linked with epichlorohydrin. Microparticles were characterized by size, surface morphology (SEM), zeta potential, thermal analysis (TGA/DSC) ...
Operational and Thermal Stability Analysis of Thermomyces lanuginosus Lipase Covalently Immobilized onto Modified Chitosan Supports
(Humana Press, 2017-06)
The aim of this paper was to evaluate different strategies of chitosan activation using cross-linking reagent like glycidol, epichlorohydrin, and glutaraldehyde for Thermomyces lanuginosus lipase (TLL) immobilization. ...
TEOS as an improved alternative for chitosan beads cross-linking: A comparative adsorption study
(John Wiley & Sons Inc, 2014-11)
In this work the use of tetraethoxysilane (TEOS) for cross-linking of chitosan hydrogel beads was studied at the level of 1 mmol TEOS per gram of chitosan. They were compared with glutaraldehyde and epichlorohydrin ...