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What Causes Food to Mold and Stink?

If you have ever kept your leftovers in the refrigerator for more than a few days, you probably have seen what mold looks like when it has a chance to grow on food. It can look furry, fuzzy, green or black, and it loves to make a home on food. Under the right conditions, mold will take over your leftovers.

  1. What Is Mold?

    • Mold can be found anywhere and everywhere. The USDA says that molds are microscopic fungi, and there may be as many as 300,000 species of mold. Mold spreads when water, air or insects transport mold spores. Molds are thread-like and contain roots and branches. Mold thrives in humid and warm conditions, but food left in the fridge is still very susceptible to mold.

    Why Does Food Turn Moldy?

    • Food molds because mold spores are everywhere. They are just waiting for the right conditions that will allow them to germinate and grow. Food provides the right conditions for mold. Food with high water content will mold the fastest because mold needs moisture to grow. Refrigeration will slow down the growth of mold, but it will not stop it completely. When food molds, it stinks because it is ruined, and you should not eat it. The smell is a warning to you that the food is no good and may make you sick.

    Preventing Mold Growth

    • You can prevent mold growth by keeping your food covered. When food is exposed to air, it is likely going to be exposed to mold spores. Perishable foods should be stored in clean storage containers and refrigerated within two hours. Keep your kitchen and refrigerator clean. Use leftovers within three or four days to avoid dealing with moldy food.

    Handling Moldy Food

    • You will need to discard most foods you find mold on. Do not eat it. There are a few foods you can safely remove the mold from and eat. The USDA says if you find mold on hard salami or dry-cured country ham to scrub the mold off of the meat. If you find mold on hard cheeses, cut off at least one inch around the mold spot and use the cheese. Make sure you do not cut into the mold to prevent contaminating the rest of the cheese. Firm fruits and vegetables such as cabbage, carrots and peppers can be treated the same way as hard cheeses. If you find mold on any other food, throw it away.

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