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Oxydase de polyphénol, changements de couleur et déshydratation des rachis de raisins de table lors du développement et de l'entreposage : influence du N-(2-chloro-4-pyridyle)-N-phenylurée (CPPU).

Polyphenol oxidase activity, colour changes, and dehydration in table grape rachis during development and storage as affected by N-(2-chloro-4-pyridyl)-N-phenylurea (CPPU).

Auteurs : CARVAJAL MILLÁN E., CARVALLO T., OROZCO J. A., et al.

Type d'article : Article

Résumé

Flame Seedless grapes were sprayed with CPPU at 0, 2.5 and 5.0 ppm to develop rachis resistant to browning and dehydration. Rachis polyphenol oxidase (PPO) activity was determined during cluster development. Cluster components were weighed at commercial and physiological maturity. PPO activity, rachis colour changes and cluster weight loss were evaluated at 0 °C for 8, 16, 32 and 56 days. CPPU-treated rachis had a decrease in PPO activity, less colour change and less weight losses.

Détails

  • Titre original : Polyphenol oxidase activity, colour changes, and dehydration in table grape rachis during development and storage as affected by N-(2-chloro-4-pyridyl)-N-phenylurea (CPPU).
  • Identifiant de la fiche : 2003-0243
  • Langues : Anglais
  • Source : J. agric. Food Chem. - vol. 49 - n. 2
  • Date d'édition : 2001

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