Are long beans still edible if they develop spots after being stored in the refrigerator for too long?

Generally, it is not recommended to eat green beans (or yardlong beans) that have developed spots after being stored in the refrigerator for a long time. The detailed explanation is as follows:

The spots on green beans may indicate spoilage caused by the growth of microorganisms such as bacteria or mold. Although refrigeration slows down food deterioration and extends shelf life, the low temperature inside the refrigerator does not eliminate all bacteria, and the high humidity environment can still promote microbial growth. When stored for too long, green beans may become moldy or spoiled, and such beans should not be consumed.

Eating spotted green beans may introduce harmful substances into the body, such as toxic ketones and ketols, which can increase the burden on the liver and potentially cause significant damage. Moreover, green beans are highly nutritious, but their nutritional value significantly decreases when stored for extended periods in the refrigerator, reducing the body's ability to absorb essential nutrients and negatively affecting overall health.

In daily life, it is advisable to consume fresh vegetables and fruits shortly after purchase to prevent spoilage and nutrient loss due to prolonged storage. Additionally, green beans must be thoroughly cooked before eating, as undercooked beans may lead to food poisoning.