Why are cucumbers green? How long can you keep cucumbers?

Cucumbers are sweet and cool in nature. They can be cooked or eaten raw. Cucumbers with the skin preserved are richer in nutrients. To prevent the harm of pesticide residues on the skin to human health, cucumbers can be soaked in salt water for ten minutes before eating. So why are cucumbers green? How long can cucumbers be kept? Let's take a look at the introduction of Encyclopedia Knowledge Network!

Contents of this article

1. Why are cucumbers green?

2. How long can cucumbers be kept?

3. Can cucumbers and grapes be eaten together?

Why are cucumbers green?

Cucumbers are green because chlorophyll accounts for the largest proportion of them, but when they reach maturity, the chlorophyll is gradually decomposed and they will turn yellow. Cucumbers can be stored in salt water. Change the water every 3 to 5 days and the cucumbers can be stored for 15 days. Alternatively, wrap the cucumbers in paper towels and store them in a ventilated place.

1. Contains chlorophyll

Cucumbers are green because they contain a lot of chlorophyll. The chlorophyll content of cucumbers is the highest when they are immature, so they appear green. However, after reaching maturity, the chlorophyll is gradually decomposed and the color of the cucumber changes from green to yellow.

2. Preservation in salt water

Cucumbers can be stored in salt water. First, put the cucumbers in clean water, then add a small amount of salt and stir evenly. Then place them in a cool environment and change the water for the cucumbers every 3 to 5 days. This can extend their storage time to 15 days.

3. Store in a well-ventilated place

Cucumbers can be stored in a ventilated place. Wrap the cucumbers with paper towels and store them in a cool and ventilated place. The paper towels can absorb the moisture on the surface of the cucumbers and keep their skin dry, thereby inhibiting the growth of bacteria and microorganisms and extending the shelf life of the cucumbers.

How long can cucumbers be kept?

Under normal temperature conditions, cucumbers can be stored in a cool, ventilated environment for about 3 to 4 days. The suitable storage temperature for cucumbers is around 12℃-13℃. Under this condition, cucumbers can be stored for a long time. If the temperature is too high, the storage time will be relatively reduced.

Can cucumbers and grapes be eaten together?

Cucumbers and grapes can be eaten together. Cucumbers are juicy and can often be eaten raw as fruit. Eating them with grapes will not produce toxins that are harmful to the body. However, cucumbers should not be eaten with peanuts, red dates, colored peppers, oranges, and tomatoes, and grapes should not be eaten with milk, seafood, or foods high in potassium.

1. You can eat together

Cucumbers and grapes can be eaten together. Cucumbers contain vitamin B2, which can prevent inflammations such as cheilitis and oral ulcers. They are also rich in water, which can clear away heat and detoxify. Grapes are rich in plant protein, carotene, and vitamins, which are beneficial for relieving fatigue and gastrointestinal motility. The ingredients of these two foods are not in conflict, and eating them together is good for health.

2. Taboos on eating cucumber

Cucumbers should not be eaten with peanuts, red dates, colored peppers, oranges, and tomatoes. Eating cucumbers with peanuts can easily cause gastrointestinal discomfort, abdominal pain, diarrhea, and other symptoms. Eating cucumbers with foods containing a lot of vitamin C, such as red dates, colored peppers, oranges, and tomatoes, will cause the vitamin C decomposing enzyme in cucumbers to react, destroying the nutritional components of these foods.

3. Taboos on eating grapes

Grapes cannot be eaten with milk, seafood, or foods high in potassium. Eating grapes with milk will cause the vitamin C in the grapes to react with the milk, which will harm gastrointestinal health. Eating grapes with seafood will cause the tannic acid in the grapes to react with the protein in the seafood, which will cause dizziness and nausea. Eating grapes with foods high in potassium will cause hyperkalemia and lead to gastrointestinal cramps.