What sign indicates that meat has spoiled?

The indication that meat has spoiled is most commonly associated with changes in its color. When meat turns brown or green, it is a sign that bacteria have started to break it down, leading to spoilage. Fresh meat typically exhibits a bright red color due to oxygen exposure, which creates a desirable appearance. A firm texture is also a characteristic of fresh meat, as spoilage often results in a softer or slimy feeling. As for odor, fresh meat should have a neutral or mild smell, while spoiled meat emits a strong, unpleasant odor. Therefore, when assessing the freshness of meat, a brown or green coloration serves as a clear warning that the meat is no longer safe for consumption and may pose health risks.