Should Powdered Milk Be Stored in the Refrigerator? A Scientific Study and Recommendations
Introduction
Powdered milk is a long-lasting dairy product used as a substitute for fresh milk due to its extended shelf life and convenience. However, there is debate over the best way to store it: should it be refrigerated, or is room temperature storage preferable?
Scientific Findings
Studies published in the Journal of Dairy Science indicate that key factors affecting powdered milk quality include temperature, humidity, oxygen exposure, and light.
Room Temperature Storage: When stored at a moderate temperature (below 25°C) in an airtight container away from moisture and light, powdered milk can retain its quality for 12-24 months.
Refrigerated Storage: This may extend shelf life but can cause moisture absorption, leading to clumping and potential bacterial growth if not sealed properly.
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Expert Recommendations
Store powdered milk in an airtight container in a cool, dry place away from light and humidity.
If refrigerated, keep it in a moisture-resistant bag or container to prevent clumping and odor absorption.
Once opened, it is best to use it within three months for optimal quality and taste.
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Conclusion
Refrigeration is not mandatory unless the surrounding environment is excessively hot or humid. However, precautions must be taken to prevent moisture and odor absorption if stored in the fridge. The ideal storage method is in a cool, dry place with an airtight seal to maintain freshness.
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