Expired foods and high-protein foods are easily contaminated by microorganisms, which leads to spoilage and rancid smell. The rancid odor mainly comes from the decomposition products of protein and fat, such as indole, sulfide, mercaptan, fecal odor, cadaverine, aldehydes, ketones and bacterial toxins, which can cause human poisoning.
In addition to the rancid smell, this kind of food is characterized by sticky surface and green color. In order to avoid spoilage as much as possible, this kind of food should be eaten in time after purchase, or stored in the refrigerator or frozen. Once it expires, you can't eat it any more.
Extended data:
Tofu is rich in protein. Eating too much at a time not only hinders the absorption of iron, but also easily causes protein's indigestion, abdominal distension, diarrhea and other discomfort symptoms. Under normal circumstances, protein, a plant that people eat in the body, undergoes metabolic changes, and finally most of it becomes nitrogen-containing waste, which is excreted by the kidneys.
When people get old, the ability of the kidneys to excrete waste decreases. At this time, if you don't pay attention to your diet, eat a lot of tofu, and eat too much protein, it will inevitably increase the nitrogen-containing waste produced in your body, increase the burden on your kidneys, and further reduce your renal function, which is not conducive to your health.
Soybean contains saponin, which can prevent atherosclerosis and promote the excretion of iodine in human body. Long-term excessive consumption of tofu can easily lead to iodine deficiency, leading to iodine deficiency disorders.
Although tofu is rich in nutrition, it lacks dietary fiber. Eating tofu alone may cause constipation. Vegetables and fungus are rich in dietary fiber, which can just make up for this shortcoming of tofu. In addition, auricularia auricula and green vegetables also contain many antioxidant components, which can improve immunity and prevent diseases. Eat with tofu, they have stronger disease resistance.
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