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Can you freeze protein powder?

Yes, you can freeze protein powder, although it is not necessary for extending its shelf life under normal storage conditions. Protein powders are dry goods, and their shelf life can typically be extended by keeping them in a cool, dry place away from moisture and direct sunlight. However, freezing protein powder can be beneficial in certain circumstances.

Freezing protein powder may be useful if:

Excess Moisture: You live in a very humid environment where moisture may cause the powder to clump.
Long-term Storage: You have purchased protein powder in bulk and wish to keep a portion of it fresh for extended periods beyond its typical shelf life.

When freezing protein powder, follow these tips to ensure its quality:

Airtight Storage: Use an airtight container or heavy-duty freezer bag to prevent moisture from getting into the powder. Removing as much air as possible from the bag or container will also help preserve the quality of the powder.
Thawing: Allow the protein powder to come to room temperature before opening the container to prevent condensation from forming on the powder, which could cause it to clump.
Shelf Life: Generally, protein powders can last up to two years if stored properly, but always check the expiration date provided by the manufacturer.

Remember, while freezing can help preserve the protein powder, frequent temperature changes (from freezing to thawing) should be avoided as they can cause condensation and affect the texture and efficacy of the powder (1).

Mann, J., & Truswell, A. S. (2017). Essentials of Human Nutrition. Oxford University Press. Chapter on Protein Powders and Preservation.

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