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Effect of high CO2 on phenolics content and the activity of phenylalanine ammonia-lyase (PAL) in Romaine lettuce.

Effet d'une atmosphère riche en CO2 sur la teneur en phénols et l'activité de la phénylalanine ammoniac-lyase (PAL) de la laitue Romaine.

Author(s) : HAMZA F., CASTAIGNE F., COUTURE R., MAKHLOUF J.

Type of article: Article

Summary

The role of phenol metabolism in the development of brown lesions on the midrib of Romaine lettuce (Lactuca sativa L.) leaves stored under high CO2 was assessed. Results indicate that the development of brown lesions under CO2 at low temperature was not related to the activation of PAL. However, after aeration of the production, brown lesions symptoms increased with the phenol content of tissues. The data suggest that the regulation of phenol synthesis, particularly chlorogenic acid by CO2, involves the regulation of other enzymes than PAL, later in the phenylpropanoid pathway.

Details

  • Original title: Effet d'une atmosphère riche en CO2 sur la teneur en phénols et l'activité de la phénylalanine ammoniac-lyase (PAL) de la laitue Romaine.
  • Record ID : 1995-0300
  • Languages: French
  • Source: Sci. Aliments - vol. 14 - n. 3
  • Publication date: 1994
  • Document available for consultation in the library of the IIR headquarters only.

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