1, color change: the color of spoiled shredded beef will become dull, black or green.

2, odor changes: the deterioration of shredded beef will emit an unpleasant sour smell or smell of corruption.

3, texture changes: the texture of shredded beef after deterioration will become sticky or sticky, the surface of the sticky material.

4, mold growth: if the shredded beef stored for a long time and more humid conditions, mold growth will occur.

5, pest infection: spoiled shredded beef will suffer from pest infection, insect moths, insect feces traces.