Lemon slices in water can go bad overnight if left out of the fridge, especially in certain conditions. When fruit is cut, its protective outer layer is compromised, making it more vulnerable to bacterial growth and oxidation. Here are some factors to consider:
Temperature: If the room temperature is warm or hot, bacteria can multiply more rapidly, leading to spoilage.
Time: Leaving the lemon slices in water overnight gives bacteria more time to grow and can increase the chances of spoilage.
Hygiene: If the lemon slices or the container they are in aren't clean, it can introduce additional bacteria, hastening spoilage.
Air Exposure: Exposure to air can cause the lemon slices to oxidize, leading to a change in flavor and potentially promoting bacterial growth.
For safety reasons, it's best to refrigerate lemon slices in water if you intend to keep them for an extended period. Refrigeration helps slow down bacterial growth and preserves the freshness of the lemon slices. If you leave them out overnight, it's better to discard them the next day to avoid the risk of consuming spoiled or contaminated slices.