Semiautomatic determination of furanic aldehydes in food and pharmaceutical samples by a stopped-flow injection analysis method.
A kinetic study of the reactions of 5-hydroxymethyl-2-furfuraldehyde and furfural with 2-thiobarbituric acid (TBA) by a stopped-flow flow injection analysis technique has been undertaken. A semiautomatic method for the analytical determination of these furanic aldehydes is proposed on the basis of reaction with TBA. The proposed stopped-flow method was successfully applied to several commercial pharmaceutical preparations and food samples. The procedure is faster than the earlier procedure for determination of these compounds in foods and pharmaceuticals.
Espinosa-Mansilla
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A
University of Extremadura, Department of Analytical Chemistry, Badajoz, Spain.
Muñoz de la Peña
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A
Salinas
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F
D002138:Calibration; D017022:Flow Injection Analysis / Q000295:instrumentation / Q000379:methods*; D005504:Food Analysis; D005662:Furaldehyde / Q000031:analogs & derivatives* / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D004364:Pharmaceutical Preparations / Q000737:chemistry*; D013696:Temperature; D013858:Thiobarbiturates; D013997:Time Factors
D004364:Pharmaceutical Preparations; D013858:Thiobarbiturates; C008046:5-hydroxymethylfurfural; D005662:Furaldehyde; C029684:thiobarbituric acid