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Développement des fibres avant et après récolte des asperges : influence des températures au cours de la culture, de l'entreposage et de la manipulation.

Pre- and postharvest fibre development in green asparagus as related to temperature during growth, storage and handling.

Auteurs : BHOWMIK P. K., MATSUI T., SUZUKI H., et al.

Type d'article : Article

Résumé

The effect of temperature during growth, storage, and handling on the fibre content of harvested green asparagus (Asparagus officinalis L. cvs. TE215 and KA979) was studied. Spears were harvested every month from March to October from greenhouse cultivation and the fibre content was measured rheologically by measuring the breaking force to shear the spears. The fibre content decreased until August in both cultivars and after that it started to increase. The effect of harvesting season on breaking force seemed to be dependent on temperature during the growing period. A highly significant negative correlation was found between temperature during the growing period and fibre content and the correlation between soil temperature and breaking force was superior to the correlations determined for air temperature and breaking force. Temperature during postharvest storage and handling appeared to have considerable effect on breaking force. Asparagus stored at 10 °C gave lower breaking force readings than that stored at 25 °C. The spears stored at 20 °C with butts in water had the lowest breaking force values. The fibre content of the spears increased more when they were transferred to 25 °C and the increase was maximum in spears stored for 14 days at 1 °C. There were no specific relationships between average monthly temperature during the growing period and breaking force to shear asparagus spears under different storage conditions.

Détails

  • Titre original : Pre- and postharvest fibre development in green asparagus as related to temperature during growth, storage and handling.
  • Identifiant de la fiche : 2004-1818
  • Langues : Anglais
  • Source : J. Food Agric. Environ. - vol. 1 - n. 3-4
  • Date d'édition : 08/2003

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