Are discolored home canned green beans ok to eat?

It is generally not safe to eat discolored home-canned green beans. Discoloration in home-canned goods can indicate spoilage, which can cause foodborne illnesses. Here are some reasons why discolored home-canned green beans may not be safe to eat:

1. Bacterial Growth: Discoloration in canned goods can be a sign of bacterial growth. Certain types of bacteria, such as Clostridium botulinum, can grow and produce toxins in improperly canned foods. This bacterium produces a neurotoxin that can cause botulism, a potentially fatal illness.

2. Spoilage: Discoloration can also occur due to spoilage caused by microorganisms such as molds, yeasts, and aerobic bacteria. These microorganisms can cause changes in the color, texture, and flavor of the food.

3. Chemical Changes: Non-bacterial chemical changes can also cause discoloration in canned foods. For example, certain metals in the canning equipment or high temperatures during processing can cause discoloration. However, these chemical changes do not necessarily indicate that the food is unsafe.

4. Oxidation: Exposure to oxygen during the canning process or after opening can cause green beans to discolor. While oxidation can affect the color and flavor of the beans, it does not necessarily indicate spoilage.

To ensure safety, it is recommended to discard any discolored home-canned green beans. It is always better to err on the side of caution when it comes to consuming home-canned goods that show signs of spoilage or discoloration.