Résumé
The method comsists in preparing of a test solution by adding water to test portion, in the case of products containing more than 10 mg of free sulphur dioxide per litre, adding of acetaldhyde, then adding of p-toluidine and barbituric acid solution to an aliquot potion of the test solution, thus forming a red coloration by reaction with 5-hydroxymethylfurfural present, and spectrometric measuring at a wavelenght of 550nm.
Informations générales
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État actuel: PubliéeDate de publication: 1986-09Stade: Norme internationale confirmée [90.93]
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Edition: 1Nombre de pages: 3
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Comité technique :ISO/TC 34/SC 3ICS :67.080.01
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