8 foods you shouldn't leave overnight

(Baonghean.vn) - In family meals, leftover food is often saved for the next day. However, some types of food left overnight can have unforeseen harmful effects on health.

Seafood

Seafood is at the top of the list of food types.Seafood should not be left overnight because after a night, the protein in it will decompose, and consuming such foods can damage liver or kidney function.

Leaving seafood overnight also makes it susceptible to bacterial contamination. During cooking, some bacteria in seafood cannot be completely eliminated at high temperatures. If it is then frozen, the bacteria can naturally regenerate or revive. Therefore, eating seafood that has been refrigerated overnight is unsafe and can easily lead to diarrhea, food poisoning, and vomiting.

Mushroom

Mushrooms are widely used in cooking. Besides their high water content, mushrooms also contain a relatively high amount of salt, especially snow mushrooms. When left overnight, their nutritional value is depleted, and the nitrate salts can decompose, producing toxins.

Even dried wood ear mushrooms can be stored for a long time, but once cooked, you need to consume them all within the day.

Soy products

Tofu and other tofu products contain a relatively high water content, as well as abundant protein and other nutrients, making them a rich source of nourishment for microorganisms.

Tofu, if left for too long, can easily breed many dangerous pathogens, such as Clostridium botulinum bacteria. This bacterium has a toxin that is many times more potent than potassium cyanide.

This toxin is destroyed by temperatures above 100 degrees Celsius after a few minutes, but if not heated to such a temperature, it becomes extremely dangerous. Therefore, it is best not to keep soy products for a second meal.

Chicken eggs

Nutrition experts say that boiled eggs left overnight, if not refrigerated but stored outside at temperatures of 10 degrees Celsius or higher, create conditions for microorganisms to grow, which can be very harmful to the stomach and intestines when consumed.

Therefore, boiled eggs should only be reused if they were thoroughly cooked the first time and then re-boiled before eating. Note that soft-boiled eggs should ideally not be eaten.

Vegetables and soups

Because leafy green vegetables contain a high amount of nitrates, if they are left for too long after cooking, bacteria will break them down, and the nitrates will turn into nitrites – a carcinogenic substance that cannot be removed even by reheating. Therefore, you should not eat vegetables that have been left overnight.

The best way to preserve soup for longer is to avoid adding seasonings like salt and MSG while cooking. After cooking, use a clean spoon to scoop out a portion into a separate bowl to eat during the day, and store the rest in an earthenware or glass pot in the refrigerator.

Because leftover soup stored in aluminum or stainless steel pots for extended periods can cause chemical reactions, it's best to use glass or ceramic containers for storing soup.

Mixed salad

Mixed salads contain many ingredients such as mayonnaise, vinegar, dried fruit, etc. Even if you store it in the refrigerator for the next day, salads can still become moldy and spoiled.

Salads are usually made from fresh vegetables, which often contain many bacteria that cannot be completely removed even after thorough washing. When combined with the ingredients in mayonnaise, this creates a "feast" for microorganisms to thrive. These bacteria can easily cause intestinal diseases and even food poisoning.

Potato

Potatoes are actually a healthy food when boiled with the skin on. However, if you reheat potatoes in the microwave, all the beneficial nutrients disappear, replaced by substances harmful to the human body.

Grilled food

Grilled food not only loses its distinctive flavor, but leaving grilled food overnight is also unhealthy. Specifically, when refrigerated, the food becomes infested with bacteria and mold that thrive in low-temperature environments.

Green tea

The morning is the start of a day, so brew a fresh pot of green tea and only enjoy it during the day. Do not drink green tea that has been left overnight, as it will lose all its vitamins, proteins, and other beneficial nutrients.

Moreover, green tea can become discolored, and the vitamins B and C it contains can be degraded. In addition, green tea left overnight can produce many harmful bacteria and fungi, making it very dangerous to drink leftover green tea from the previous day.

Ngoc Anh

(Synthetic)