Entering the summer,
Watermelon is a favorite fruit to quench your thirst.
so
Is an overnight watermelon a watermelon that has been left out overnight?
Can you eat watermelon overnight?
How to understand overnight food
Overnight food isn't just leftovers from the day and left over for the next day. Foods that have been left out for more than 10 hours are classified as overnight food. If you cut the watermelon at 10 a.m. and eat it again at 8 p.m., although it has not been overnight, but it has been left for more than 10 hours, it is also considered an overnight watermelon.
Whether the watermelon can be eaten overnight or not depends mainly on whether the knife and the film covering the watermelon are clean, whether it is refrigerated in time after cutting, whether there are other sources of contamination in the refrigerator, and how long it can be stored.
In general, an intact watermelon is sterile inside and can be stored for a long time. Once the watermelon is cut, it will come into contact with germs from the outside world, and as time goes on, the bacteria will increase.
A TV program conducted an experiment on watermelon storage, using a clean knife and a cutting board, a knife that has cut the flesh and a cutting board, and immediately sealing the cut watermelon with plastic wrap and storing it in the refrigerator for 24 hours. The two watermelons were then cultured for bacteria. The results showed that watermelons treated with clean knives and cutting boards contained 160 bacterial colonies per 25 grams, which was within the safe range. Watermelons, on the other hand, treated with meat-cut knives and cutting boards, contain 8,400 bacterial colonies per 25 grams, which is beyond the safe range. It can be seen that watermelon can be eaten overnight, but only if it is cut with a clean knife and cutting board, and sealed in plastic wrap as soon as possible.
It's healthier to eat in moderation
Watermelon has high sugar content and sufficient water, if calculated according to 8% sugar content, 1000 grams of watermelon has 80 grams of sugar, and the energy is about 300 kcal, and the satiety of watermelon is relatively poor, and everyone is easy to eat more.
It is recommended to eat 200~350 grams of watermelon flesh per day, and 350~650 grams if it contains melon skin. Diabetics can consider eating watermelon between meals, eating 200 grams of watermelon in two divided doses of 100 grams each time. People with weak gastrointestinal function try not to eat iced watermelon.
In addition to cut watermelon, seafood, soy products, dairy products, green leafy vegetables, cooked food, etc., should not be stored overnight at room temperature in summer, which can easily lead to excessive bacteria and cause diarrhea and other diseases.
Remind everyone that when eating food overnight, it must be heated thoroughly, steaming, boiling, stewing, stir-frying, etc., which can kill most bacteria.
Source: Guangxi CDC
Editor: Li Zhiying
Duty Director: Yuan Yuzi
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