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Couleur du jus d'orange traité par des champs électriques à intensité élevée pendant l'entreposage frigorifique et comparaison avec du jus pasteurisé.

Colour of orange juice treated by high intensity pulsed electric fields during refrigerated storage and comparison with pasteurized juice.

Auteurs : CORTÉS C., ESTEVE M. J., FRÍGOLA A.

Type d'article : Article

Résumé

High intensity pulsed electric field (HIPEF) is one of the nonthermal minimal processing technologies interesting for scientists and food industry as a new, alternative (preservation) process for liquid food. The authors have evaluated the effect on colour, browning and hydroxymethylfurfural (HMF) of a pasteurized orange juice and the same orange juice treated by HIPEF, during 7 weeks stored in refrigeration at 2 and 10°C. Pasteurized orange juice presents greater yellow tendency (b) and less red tendency (a) than the untreated orange juice, while HIPEF orange juice presents a coloration more similar to the untreated orange juice. Colour variations (DE) during storage are greater in orange juice pasteurized than in HIPEF treated orange juice. Non-thermal treated orange juice has less nonenzymatic browning than the pasteurized one. There is a significant increase in this parameter from the fourth week of storage in all the juices stored at 10°C, while in the ones stored at 2°C the browning index values are maintained during more time. There are no significant variations in the HMF content of the juices pasteurized or treated by HIPEF respect the untreated orange juice. During refrigerated storage, HMF is always below the maximum values established. [Reprinted with permission from Elsevier. Copyright, 2007].

Détails

  • Titre original : Colour of orange juice treated by high intensity pulsed electric fields during refrigerated storage and comparison with pasteurized juice.
  • Identifiant de la fiche : 2008-1314
  • Langues : Anglais
  • Source : Food Control The International Journal of HACCP and Food Safety - vol. 19 - n. 2
  • Date d'édition : 02/2008

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