期刊
FOOD CHEMISTRY
卷 102, 期 2, 页码 481-487出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2006.05.058
关键词
active packaging; perforated films; Humidipak (R); shelf-life; cheese
Saloio cheese - a regional Portuguese cheese - is currently sold unpackaged or in a vacuum package. Neither of these packaging systems is acceptable: the first system yields a cheese too hard, because of excessive water loss, while the second yields a white cheese with poor textural properties. The use of a packaging system with a tailor-made moisture barrier, i.e., allowing for water loss, but at a lower rate, is a way of extending the cheese's shelf-life. The adequate water vapour permeability to preserve the cheese was previously determined as 6.8 x 10(-7) g m/m(2) day Pa at 8 degrees C. The objective of this work was to develop a packaging system providing the required relative humidity inside the package. Two systems were tested: (i) the active system Humidipako and (ii) perforated plastic films. Both packaging systems succeeded in extending the cheese's shelf-life by significantly decreasing the water loss. Perforated films require further study on moulds growth control. (c) 2006 Elsevier Ltd. All rights reserved.
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