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Vacuum Cooling of Cooked Mussels (Perna perna)
E. Huber
L. P. Soares
B. A. M. Carciofi
H. Hense
Departamento de Engenharia Química e Engenharia de Alimentos, Universidade Federal de Santa Catarina. Caixa Postal 476, 88040900, Florianópolis, SC, Brazil
J. B. Laurindo
Departamento de Engenharia Química e Engenharia de Alimentos, Universidade Federal de Santa Catarina. Caixa Postal 476, 88040900, Florianópolis, SC, Brazil joao{at}enq.ufsc.br
Mussels pass through a thermal treatment during industrial processing with hot water or steam and then are pre-cooled before the manual extraction of the meat. This pre-cooling is classically accomplished by the immersion of the cooked mussels in cold water. In this work, vacuum cooling of mussels after the cooking stage was used as a technique to quickly decrease the product temperature and to avoid a possible microbial contamination by the cooling water or by manipulation. In about 3 minutes, mussels were cooled from about 90 °C to 20 °C. The relative weight loss during the vacuum cooling of the whole sample (meat and shell) was about 8% of the initial samples weight, for temperatures drop cited above. In this way, there was a 8.7 0.26 °C temperature drop for each 1% of weight loss. For separated meat (without shell), the ratio was 7.5 0.30 ºC per 1% weight loss, which agreed with the literature for vacuum cooling of meats in general. A simple numerical simulation was able to determine weight loss during the vacuum cooling process, providing data that agreed very well with experimental results. The vacuum cooling technique is a promising alternative for processing pre-cooked mussels, because process time is shortened and cross-contamination risk is significantly reduced in the cooling stage. The water loss is not a serious problem when the cooled mussels are canned in brine.
Key Words: mussels vacuum cooling weight loss
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Food Science and Technology International, Vol. 12, No. 1,
19-25 (2006)
DOI: 10.1177/1082013206062387

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