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Modélisation de la qualité des fruits dans des scénarios à température variable : pouvons-nous fonder notre modèle sur l'indépendance des paramètres ?

Modelling fruit quality in variable temperature scenarios: can we assume history independence?

Auteurs : EAST A. R., MAWSON A. J., TANNER D. J., et al.

Résumé

Models developed for prediction of fruit physiology and/or quality in variable temperatures often apply the time-temperature-tolerance hypothesis, assuming that the temperature change itself does not have an effect on subsequent fruit behaviour. This assumption is in contrast to evidence provided by prestorage heat treatments and intermittent warming studies. Data was collected with Pink Lady apples, mimicking in commercial cool-chain scenario, where fruit were exposed to 20°C for 0, 1, 3 or 6 days before returning to storage. Fruit exposed to 20°C were induced to an altered physiological state on return to cool storage (as evidenced by a doubling in ethylene production) although this did not correspond to changes in respiration rate or the rate of loss of quality parameters measured. These results are discussed with respect to current modelling techniques.

Détails

  • Titre original : Modelling fruit quality in variable temperature scenarios: can we assume history independence?
  • Identifiant de la fiche : 2006-1834
  • Langues : Anglais
  • Source : Proceedings of the Third International Symposium on applications of modelling as an innovative technology in the agri-food chain. Model-IT 2005.
  • Date d'édition : 02/05/2005

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