Partager

Transition vitreuse d'une solution aqueuse d'acide ascorbique concentrée par congélation étudiée par analyse thermique différentielle.

Glass transition of freeze-concentrated aqueous solution of ascorbic acid as studied by alternating differential scanning calorimetry.

Auteurs : ANDERSEN A. B., SKIBSTED L. H.

Type d'article : Article

Résumé

Aqueous solutions of ascorbic acid have been shown, using differential scanning calorimetry (DSC), to form glassy states during freezing. Alternating DSC, as a new technique, further helped to study five thermal events observed during heating of frozen ascorbic acid solutions to complete melting from below the temperature for maximal freeze concentration of ascorbic acid in water depends somewhat on heating rate and was found to be -54 deg C for 10 deg C/minute.

Détails

  • Titre original : Glass transition of freeze-concentrated aqueous solution of ascorbic acid as studied by alternating differential scanning calorimetry.
  • Identifiant de la fiche : 1999-0925
  • Langues : Anglais
  • Source : Lebensm.-Wiss. Technol. - vol. 31 - n. 1
  • Date d'édition : 1998

Liens


Voir d'autres articles du même numéro (7)
Voir la source

Indexation