Evaluación de la absorción de humedad de leche en polvo envasada en diferentes materiales y almacenada a diferentes condiciones de humedad relativa
DOI:
https://doi.org/10.29105/idcyta.v8i1.47Keywords:
storage time, packing material, food storage, shelf-lifeAbstract
Powdered milk, being a dehydrated product, is highly perishable when exposed to extreme storage conditions. Therefore, the objective of this study was to evaluate the moisture absorption of powdered milk packaged in different packaging materials and stored in different relative humidity conditions. Approximately 5 g of powdered milk were packed in different packaging materials (paper, plastic and aluminum) and stored at three different relative humidity conditions (11%, 32% and 78%) at 25 ºC. Weight gain was monitored every 8 h for 5 days. A sample directly exposed to the storage condition was taken as a control. The milk packaged in paper presented a greater increase in weight in the different storage moisture, reaching an increase of approximately 30%, surpassing in some cases the control sample, which could be attributed to the absorption of water by the material. On the contrary, the milk packaged in aluminum was the one that presented the lowest moisture absorption rate (1.16´10–4 g/g·h). These results demonstrate that aluminum extends the shelf life of a dehydrated product due to the low rate of water absorption.
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Copyright (c) 2023 S.C. Soto-Flores, L.F. Amador-López, J.J. Martínez-García, M.G. Candelas-Cadillo, J.R. Minjares-Fuentes
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