Validação de métodos para determinação do teor de 3-hidroxibutirato e 3-hidroxivalerato em polímero biodegradável
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Data
2007-01-01
Autores
Santos, Ademir dos [UNESP]
Polese, Luciana [UNESP]
Ribeiro, Clovis Augusto [UNESP]
Ernandes, Jose Roberto [UNESP]
Dametto, Alessandra Cristina [UNESP]
Mangili, Lilian Silveira [UNESP]
Kesserlingh, Sonia Maria
Nonato, Roberto Vianna
Título da Revista
ISSN da Revista
Título de Volume
Editor
Soc Brasileira Quimica
Resumo
The efficiency of two methods for determining 3-hydroxybutyrate and 3-hydroxyvalerate content in the biopolymer (poly(3-hydroxybutyrate-co-3-hydroxyvalerate) has been evaluated. Both methods are based on (a) the hydrolysis of polymers, (b) the esterification with methyl (method A) and isoamilic alcohol (method B) and (c) analysis of the esters by gas chromatography using flame ionization detection (GC-FID). After optimization of the analytical conditions, the main validation parameters (linearity, quantification limit, detection limit, recovery, sensitivity and precision) were determined showing that both analytical procedures can be applied to control the process of poly(3-hydroxybutyrate) production. However, method B gives better analytical results than method A and has the advantage of not using chlorinated solvents.
Descrição
Palavras-chave
validation of methods, biopolymer analysis, polyhydroxyalkanoate composition
Como citar
Quimica Nova. São Paulo: Soc Brasileira Quimica, v. 30, n. 8, p. 1951-1955, 2007.