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MotherBee's Food Science Talk - Shelf life and Storage of food

Updated: Sep 17, 2023


Shelf life and Storage of food
Shelf life and Storage of food

As home bakers, we often find ourselves immersed in the joy of creating delightful treats, whether it's fresh bread, delectable cakes, or scrumptious pastries. But beyond the artistry of baking lies the science of Shelf life and Storage of food – a crucial aspect that can make or break your baked goods. In this blog post, we'll unravel the mysteries of storage, exploring the roles of molds and yeast growth, and how they can influence the quality and safety of your culinary creations.


Understanding the Enemies: Molds


Molds are a common threat to bakers and food enthusiasts. These microorganisms thrive in specific environments, influenced by factors such as pH, moisture, salinity, and temperature.


  1. Moisture Matters: Molds require moisture to grow and reproduce. Even a small amount of moisture can be enough for them to thrive. That's why it's essential to store baked goods in a dry environment and to avoid sealing them in airtight containers when they're still warm, as trapped moisture can lead to mold growth.

  2. Proper Cooling: When cooling baked goods like bread or cakes, it's crucial to allow them to cool completely before storing. This helps prevent condensation inside storage containers, reducing the moisture available for mold growth.

  3. Avoiding Cross-Contamination: To prevent cross-contamination, ensure that storage containers and surfaces are thoroughly cleaned and dried before storing baked goods. Even a trace of mold can spread to other items.

  4. Storage Containers: Use airtight, food-grade containers to store baked goods. These containers help maintain a dry environment and protect against external contaminants.

  5. Storage Temperature: Molds tend to thrive at temperatures between 77°F (25°C) and 86°F (30°C). Storing baked goods in a cool, dry place can help inhibit mold growth.

  6. Timeframe for Mold Formation: Molds can begin to develop on baked goods within a few days to a week, depending on environmental conditions. It's essential to monitor stored items regularly and discard anything showing signs of mold growth.

  7. Environmental Factors: Molds have specific preferences when it comes to pH, moisture, and salinity. Most molds prefer a slightly acidic to neutral pH (around 4.6 to 7). Reducing the acidity by adding more sugar or using acidic ingredients can help deter mold growth.

Embracing the Allies: Yeast Growth


Yeast, on the other hand, is a friend to bakers. It's a microorganism responsible for fermentation, a process that leavens bread and imparts a delightful aroma and flavor.


  1. Controlled Fermentation: Yeast growth is essential for bread-making, as it ferments sugars and produces carbon dioxide gas, which causes the dough to rise. Properly controlled fermentation times are crucial for achieving the desired texture and flavor.

  2. Refrigeration or Freezing: To slow down yeast activity, some recipes call for refrigeration or freezing of dough. This can be particularly useful if you want to prepare dough in advance and bake it later. However, be mindful of the recommended temperatures and durations to maintain yeast viability.

  3. Stale Bread Revival: Yeast can also play a role in reviving stale bread. A quick reheat in the oven can help refresh the texture and aroma, thanks to yeast's ability to reactivate slightly.


In the world of baking, understanding the science of storage, molds, and yeast growth is essential for producing high-quality, safe, and delicious treats. By controlling moisture levels, being vigilant for mold growth, and harnessing the power of yeast fermentation, you can elevate your baking game and ensure that every bite is a delightful experience.


So, the next time you're in the kitchen, remember that the artistry of baking is beautifully intertwined with the science of storage. Embrace this knowledge, and watch your culinary creations rise to new heights!


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