Chitosan composite microparticles: A promising gastroadhesive system for taxifolin.
Carbohydr Polym
; 218: 343-354, 2019 Aug 15.
Article
en En
| MEDLINE
| ID: mdl-31221339
ABSTRACT
Taxifolin possesses gastroprotective property but is characterized by low water solubility, is instabile in alkaline medium, and is degraded by the intestinal bacteria flora. The purpose of the work was therefore to produce a gastroadhesive formulation to prolong taxifolin residence time and release in the stomach. We first demonstrated that taxifolin is stable in simulated gastric fluid with or without pepsin and mucus, and is able to cross pig gastric mucus layer and stomach mucosa. Next, gastromucoadhesive microparticles composed of Syloid® AL-1 mesoporous silica, chitosan and HPMC were produced using spray-drying. Microparticles were characterized by a spherical shape and a mean volume-equivalent diameter around 12 µm. The optimized microparticles were able to release taxifolin and to adhere to pig stomach mucosa for 5 h.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Quercetina
/
Fármacos Gastrointestinales
/
Portadores de Fármacos
/
Quitosano
Límite:
Animals
Idioma:
En
Revista:
Carbohydr Polym
Año:
2019
Tipo del documento:
Article
País de afiliación:
Brasil