What to do if the watermelon is too big to finish

There are a lot of fruits in summer. People feel very happy in summer, especially female friends, because there are many kinds of fruits to eat. Watermelon is a fruit that people often eat in summer. Usually people will buy a watermelon and take it home to eat, but sometimes they cannot finish it. What should you do if the watermelon is too big to finish? Here I will tell you how to preserve watermelon.

1. Can you put the unfinished watermelon in the refrigerator?

(1) If you can’t finish eating the watermelon, cover it with plastic wrap and put it in the refrigerator. This will produce a large number of bacteria, so it is not a good insurance method.

In response to this issue, the Beijing Academy of Agricultural Sciences once conducted experiments. A bacterial culture experiment was conducted on watermelons that were placed in a refrigerator and wrapped in plastic wrap but not preserved for 17 hours. The result was quite unexpected.

1. Watermelons covered with plastic wrap actually breed more bacteria. The surface of the watermelon wrapped in plastic wrap is still wet, and condensed colorless droplets can be seen where the plastic wrap touches the watermelon flesh.

2. The half watermelon that was placed directly in the refrigerator had wilted flesh on the surface and contained significantly less moisture than the watermelon covered with plastic wrap. However, the number of bacterial flora is significantly lower than that of those preserved with plastic wrap.

(II) Reasons for the increase in bacterial content in watermelon pulp treated with plastic wrap:

1. The watermelon pulp itself contains a certain amount of bacteria. When the plant grows, it will secrete some substances that inhibit the reproduction of bacteria. This is why the sweet potatoes grown in the field will not rot. When the watermelon is picked, the substances that inhibit the reproduction of bacteria will no longer be produced, so the bacteria inside the watermelon begin to multiply.

2. Use plastic wrap to cover the surface of the cut watermelon to form a relatively closed space inside the watermelon, preserving the moisture inside the watermelon. At the same time, the temperature inside the watermelon will not drop to 4 degrees Celsius quickly, which provides convenient conditions for the reproduction of bacteria. Because at a temperature of 4 degrees Celsius, the reproduction of bacteria will be inhibited.

It is recommended to buy smaller watermelons, or not to keep them for too long, especially not overnight.