Multicommuted flow system for the determination of glucose in animal blood serum exploiting enzymatic reaction and chemiluminescence detection

• Tipo: Artigo em Revista Científica Internacional
• Data: 2003

Autores

Pires, CK (Autor) Outra; Martelli, PB (Autor) Outra; Reis, BF (Autor) Outra; Lima, JLFC (Autor) FFUP; Saraiva, MLMFS (Autor) FFUP

Revista

Título: Journal of Automated Methods and Management in Chemistry

Vol. 25 Nº 5

Páginas: 109-114

ISSN: 1463-9246

Editora: HINDAWI PUBLISHING CORPORATION

Indexação

ISI Web of Knowledge - 8 Citações

ISI Web of Science

Scopus - 7 Citações

Classificação Científica

CORDIS: Ciências da Saúde

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

Outras Informações

ID Authenticus: P-000-FBD

DOI: 10.1080/14639240310001643463

Resumo (PT): An automatic flow procedure based on multicommutation dedicated for the determination of glucose in animal blood serum using glucose oxidase with chemiluminescence detection is described. The flow manifold consisted of a set of three-way solenoid valves assembled to implement multicommutation. A microcomputer furnished with an electronic interface and software written in Quick BASIC 4.5 controlled the manifold and performed data acquisition. Glucose oxidase was immobilized on porous silica beads (glass aminopropyl) and packed in a minicolumn (15 } 5 mm). The procedure was based on the enzymatic degradation of glucose, producing hydrogen peroxide, which oxidized luminol in the presence of hexacyanoferrate(III), causing the chemiluminescence. The system was tested by analysing a set of serum animal samples without previous treatment. Results were in agreement with those obtained with the conventional method (LABTEST Kit) at the 95% confidence level. The detection limit and variation coefficient were estimated as 12.0 mg l−1 (99.7% confidence level) and 3.5% (n=20), respectively. The sampling rate was about 60 determinations h−1 with sample concentrations ranging from 50 to 600 mg l−1 glucose. The consumptions of serum sample, hexacyanoferrate(III) and luminol were 46 μl, 10.0 mg and 0.2 mg/determination, respectively. <br> <br> <a target="_blank" href="http://www.hindawi.com/journals/jammc/2003/457134.abs.html"> Texto integral</a> <br> <br>

Abstract (EN): An automatic flow procedure based on multicommutation dedicated for the determination of glucose in animal blood serum using glucose oxidase with chemiluminescence detection is described. The flow manifold consisted of a set of three- way solenoid valves assembled to implement multicommutation. A microcomputer furnished with an electronic interface and software written in Quick BASIC 4.5 controlled the manifold and performed data acquisition. Glucose oxidase was immobilized on porous silica beads ( glass aminopropyl) and packed in a minicolumn ( 15 x 5 mm). The procedure was based on the enzymatic degradation of glucose, producing hydrogen peroxide, which oxidized luminol in the presence of hexacyanoferrate( III), causing the chemiluminescence. The system was tested by analysing a set of serum animal samples without previous treatment. Results were in agreement with those obtained with the conventional method ( LABTEST Kit) at the 95% confidence level. The detection limit and variation coefficient were estimated as 12.0 mg l(-1) ( 99.7% confidence level) and 3.5% ( n = 20), respectively. The sampling rate was about 60 determinations h(-1) with sample concentrations ranging from 50 to 600 mg l(-1) glucose. The consumptions of serum sample, hexacyanoferrate( III) and luminol were 46 mul, 10.0 mg and 0.2 mg/ determination, respectively.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6