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Document IIF

Effet des conditions de refroidissement sur la perte de masse des viandes cuites, au cours d'un refroidissement par circulation lente d'air et d'un refroidissement par air forcé.

Effect of cooling conditions on weight loss of cooked meat during slow air and air blast cooling processes.

Auteurs : WANG L. J., SUN D. W.

Résumé

Weight loss of cooked meat during slow air cooling processes is affected by the cooling conditions such as air velocity, air temperature and relative humidity. Weight loss has been theoretically analysed by an experimentally validated finite element model. The results show that for cooling a large block of cooked meat from the core temperature of 74 to 5 °C (maximum temperature) by air blast cooling method, air velocity has little effect on the total weight loss. The total weight loss increases significantly with the decrease in relative humidity of the air. If the relative humidity is reduced from 92 to 65%, the total weight loss will be increased by 20%. Lower air temperatures produce fast cooling at the surface and thus lower the weight loss greatly. However, air temperature below 0 °C may freeze the surface of the product. The results also show that most of the weight loss occurs at the beginning of the cooling process due to high surface temperature. Therefore, low air temperature can initially be used to accelerate the decrease of the surface temperature near to the freezing point of water, and a higher air temperature can then be used to avoid surface freezing of the products.

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Pages : 2001-1

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    20 €

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Détails

  • Titre original : Effect of cooling conditions on weight loss of cooked meat during slow air and air blast cooling processes.
  • Identifiant de la fiche : 2005-1356
  • Langues : Anglais
  • Source : Rapid Cooling of Food.
  • Date d'édition : 28/03/2001

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