title: A study of physicochemical and biopharmaceutical properties of amoxicillin tablets using full factorial design and PCA biplot.
abstract: The variables that influence the tablets obtained by direct compression method deserve to be studied to minimize formulations costs and to improve the physicochemical and biopharmaceutical properties of the compacts. Here, we explore the adjuvants effects on amoxicillin tablet formulations considering multiple responses, and indicate the most suitable formulation composition. A 2(3) full factorial design was built to different amoxicillin formulations, each one containing three replicate batches, and eight responses (physicochemical and biopharmaceutical parameters) were obtained. The microcrystalline cellulose (MCC) type Avicel PH-102 (low) or PH-200 (high), the absence (low) or presence (high) of spray-dried lactose (LAC), and the absence (low) or presence (high) of disintegrant (DIS) were the levels investigated. The more relevant responses to the distinct formulations from the experimental design were hardness, friability, and the amount of amoxicillin dissolved during the first hour. PCA biplot indicated high values of amount of drug dissolved in 60 min as advantageous responses for the investigated amoxicillin tablet formulations and high values of friability as not desirable. Considering the individual response evaluation, the most suitable amoxicillin tablet formulation should present in its composition the MCC type Avicel PH-102 (low level) and the superdisintegrant agent (DIS high level), croscarmellose sodium, but no LAC (low level).
authors.affiliation: Laboratory for Theoretical and Applied Chemometrics, Department of Physical Chemistry, Institute of Chemistry, The State University of Campinas, P.O. Box 6154, Campinas SP 13084-971, Brazil. kerly@netpoint.com.br
authors.forename: Kerly F M
authors.initials: KF
authors.lastname: Pasqualoto
authors.forename: Reinaldo F
authors.initials: RF
authors.lastname: Teófilo
authors.forename: Marcos
authors.initials: M
authors.lastname: Guterres
authors.forename: Flávia S
authors.initials: FS
authors.lastname: Pereira
authors.forename: Márcia M C
authors.initials: MM
authors.lastname: Ferreira
mesh_terms: D000658:Amoxicillin / Q000032:analysis* / Q000737:chemistry* / Q000592:standards; D001702:Biopharmaceutics / Q000592:standards; D002266:Carboxymethylcellulose Sodium / Q000592:standards; D002626:Chemistry, Pharmaceutical / Q000379:methods* / Q000592:standards; D002627:Chemistry, Physical / Q000592:standards; D019245:Compressive Strength; D012995:Solubility; D013607:Tablets
chemical_list: D013607:Tablets; D000658:Amoxicillin; D002266:Carboxymethylcellulose Sodium