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Changes in the nitrate content of hearted lettuce during cold storage.

Evolution de la teneur en nitrate de la laitue pommée pendant l'entreposage frigorifique.

Author(s) : JERMINI M., MARTINONI A., JELMINI G., CESCHI M.

Type of article: Article

Summary

The authors have studied changes in the nitrate content of hearted lettuce as a function of different cold-storage periods. Results have shown that the nitrate content increases after 24-48 hours of cold storage, hence differing from that at harvest time. The mean increase is 390 mg nitrate/kg, which corresponds to a gain of 13.8%, compared with harvest time. The mean weight of the lettuce head also varies during storage, but it is not correlated with changes in nitrate content. Out of the three solutions proposed to solve nitrate problems, the most efficient one is to grow hearted lettuce off-soil. Tests made in Cadenazzo in 1988 showed that this growing technique results in a significant decrease nitrate content.

Details

  • Original title: Evolution de la teneur en nitrate de la laitue pommée pendant l'entreposage frigorifique.
  • Record ID : 1994-2328
  • Languages: French
  • Source: Mitt. Geb. Lebensm.unters. Hyg./Trav. Chim. aliment. Hyg. - vol. 84 - n. 6
  • Publication date: 1993
  • Document available for consultation in the library of the IIR headquarters only.

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