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Traitements au dioxyde de carbone : taux modifiés d'anthocyanines, de la phénylalanine ammoniac-lyase et de la glucosyltransférase des grenades.

Changes in pomegranate anthocyanins, phenylalanine ammonia lyase and glucosyltransferase in response to carbon dioxide treatments.

Auteurs : GIL M. I., HOLCROFT D. M., KADER A. A.

Résumé

The authors investigated the influence of CO2 on the changes in aril pigmentation in pomegranate and on activity of phenylalanine ammonia lyase (PAL) and UDP-glucose: flavonoid 3-O-glucosyltransferase in California-grown Wonderful pomegranates. Pomegranates were placed in jars and ventilated with air or air enriched with 10% CO2 at 10 °C and were analyzed initially, and after 1, 2, 4 and 6 weeks. Six anthocyanins were identified and quantified. CO2 treatments inhibited the growth of decay organisms compared with air stored fruits. CO2 had no effect on pH, titratable acidity and soluble solids content of pomegranate juice. Evolutions of anthocyanin content, monoglucoside derivatives, diglucosides, PAL activity and GT activity were observed and measured.

Détails

  • Titre original : Changes in pomegranate anthocyanins, phenylalanine ammonia lyase and glucosyltransferase in response to carbon dioxide treatments.
  • Identifiant de la fiche : 2001-0283
  • Langues : Anglais
  • Source : CA '97. Proceedings of the 7th international controlled atmosphere research conference.
  • Date d'édition : 13/07/1997
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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