UV monitoring of sugars during wine making

B. Roig (1) , O. Thomas (1)

1 IMT - MINES ALES - IMT - MINES ALES

A UV/UV system for the spectrophotometric determination of sugars during wine production is described. The methodology is based on the formation of a UV-absorbing byproduct produced by the photodegradation of sugars. Under the given experimental conditions, the influence of increasing the amount of acids and alcohol is negligible. The measurement by UV/UV is compared with FTIR as reference method and validated according to the French norm AFNOR XPT 90 210.

Mots clés: UV spectrophotometry; sugar; photooxidation

Domaines: Chimie analytique; Sciences de l'environnement

B. Roig, O. Thomas. UV monitoring of sugars during wine making. Carbohydrate Research, 2003, 338 (1), pp.79 - 83. ⟨10.1016/S0008-6215(02)00396-8⟩. ⟨hal-01662686⟩