Bread crumbs can't be eaten after the expiration date. Food has a shelf life, and expired breadcrumbs have been spoiled, shoveling a lot of bacteria, consumption will be harmful to human health.

While the expired breadcrumbs don't look like they've changed much, but their internal deterioration has already occurred, and they're starting to harbor bacteria. Continuing to use expired breadcrumbs may cause diarrhea, gastrointestinal discomfort, and in severe cases, food poisoning may occur. Therefore, the expired breadcrumbs can not be eaten again.

Expanded:

1, microorganisms. p>1, microorganisms to blame. There are microorganisms everywhere in the environment, and food is easily contaminated by microorganisms during production, processing, transportation, storage, and sales. As long as the temperature is suitable, microorganisms will grow and multiply, decompose the nutrients in food to meet their own needs. At this point, the protein in the food is destroyed, the food will emit a foul and sour taste, lose the original toughness and elasticity, the color will also change.

2, the role of enzymes. Animal food has a variety of enzymes, under the action of enzymes, food nutrients are broken down into a variety of low-level products. Usually see the rice rancid, fruit rot, is the carbohydrates are broken down by the enzyme fermentation.

3, the chemical reaction of food. Fats and oils are easily oxidized, resulting in a series of chemical reactions, oxidized fats and oils have a strange taste, such as fat meat will turn from white to yellow.

Baidu Encyclopedia - Food Spoilage