Determinación de la relación entre el porcentaje del grupo amino y el grado de desacetilación del quitosano
ABSTRACT: Several methods such as elemental analysis or infrared spectroscopy technique (IR) have been already developed to determine the degree of N-acetylation, for chitin and chitosan. This paper proposed the potentiometric technique to determine the relationship between the amino group proportio...
- Autores:
-
Escobar Sierra, Diana Marcela
Castro Ramírez, Alex Mauricio
Vergara Castrillón, Natalia Andrea
- Tipo de recurso:
- Article of investigation
- Fecha de publicación:
- 2014
- Institución:
- Universidad de Antioquia
- Repositorio:
- Repositorio UdeA
- Idioma:
- spa
- OAI Identifier:
- oai:bibliotecadigital.udea.edu.co:10495/35455
- Acceso en línea:
- https://hdl.handle.net/10495/35455
- Palabra clave:
- Complejo Desacetilasa y Remodelación del Nucleosoma Mi-2
Complejo Desacetilasa y Remodelación del Nucleosoma Mi-2
Quitosano
Chitosan
Potenciometría
Potentiometry
viscosidad
Viscosity
- Rights
- openAccess
- License
- http://creativecommons.org/licenses/by-sa/2.5/co/
| Summary: | ABSTRACT: Several methods such as elemental analysis or infrared spectroscopy technique (IR) have been already developed to determine the degree of N-acetylation, for chitin and chitosan. This paper proposed the potentiometric technique to determine the relationship between the amino group proportion and the deacetylation degree of chitosan, using two chitosan samples obtained from different sources: one, by previously established protocols, and a commercial chitosan. The polymers tested were characterized by X-ray Diffraction and Fourier Transform Infrared Spectroscopy to verify the purity of the polymers. The proposed technique allowed us to demonstrate that the molecular weight of the synthesized chitosan are within the range reported for the biopolymer with amino group proportions similar to those obtained for samples of commercial chitosan. |
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