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Brains On! Science podcast for kids
How can you tell when food is expired?
Apr 16, 2024
Why does food go bad? Discover the world of food expiration dates and the importance of the sniff test. Learn about the history of expiration dates and how to identify spoiled food. Explore the evolution of food preservation and distribution, and the truth about expiration dates leading to food waste.
26:42
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Quick takeaways
- Different preservation methods like refrigeration, pickling, and drying slow down bacteria and fungi growth in food.
- Expiration dates on food packages serve as estimates for freshness and safety, but sensory cues like smell also play a crucial role in detecting food spoilage.
Deep dives
Food Spoilage and Preserving Techniques
Food spoils when bacteria and fungi grow, causing unpleasant taste and potential sickness. Various preservation techniques like refrigeration, pickling, and drying slow down bacteria and fungi growth. Refrigeration inhibits their growth by creating a cold environment, pickling food with salt and vinegar makes it acidic, slowing spoilage. Drying removes water, preventing bacterial growth.
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Discover
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Listen to the best highlights from the podcasts you love and dive into the full episode