How to choose male and female watermelons? Summer is coming. Watermelon is one of the most commonly used fruits, and it is also a must-have for us to quench our thirst. But many people are concerned about how to choose a good watermelon. Then, let's share how to choose male and female watermelons.

How to choose male and female watermelons 1 watermelons are also divided into male and female, and the female is delicious. Old melon farmer: remember these five points, and the male and female can be seen at a glance.

1, look at the color

Yellow background is ripe melon; Melons with fluffy surface, dull color, mottled color or unclear lines are immature melons. The color of watermelon is best to choose turquoise, not foggy white. The white watermelon at the bottom of the watermelon indicates that there is no water in the watermelon, or the watermelon has been placed for a long time.

2. Listen to the sound

Play the melon with your fingers, and what you hear is the ripe melon with a bang; Not mature enough to hear "Dangdang" voice; It is the ripe melon that hears the "poop-poop" sound.

3. Look at this circle

There is a navel at the bottom of the melon, which is a small black circle. The big circle is a male melon and the small circle is a female melon. The smaller the circle, the better. The bigger the circle, the thicker the melon skin.

4. Look at these lines

The lines on each watermelon are different, just like the human meridians. We can judge what kind of watermelon is a good melon from the local lines on it.

The surface lines of the female melon are neat and regular, but the male melon is not.

Melons are symmetrical, grow normally and have good quality; If the melon is deformed, the growth is abnormal, and the quality is second.

5. Look at Guadi

Guati is watermelon head. If it is a straight line, it is a male melon with many seeds, large seeds and strong taste; If it's curled up, it's a mother melon. It's the best choice because of its small seeds and sweet taste.

Watermelon is good, but three kinds of people should not eat more.

Although eating watermelon in summer can not only relieve summer heat, but also has good nutritional value, we should also pay attention to the right amount and not eat too much, especially for the following three groups of people. Excessive consumption of watermelon is easy to have a negative impact on the body:

1, spleen and stomach deficiency and cold

Because watermelon is cold, it is not good for the spleen and stomach. People who encounter cold food and are prone to diarrhea must pay attention to eating less watermelons, especially iced watermelons, so as to avoid gastrointestinal discomfort.

2. People during a cold

People with wind-heat cold or wind-cold cold cold, during the cold period, because the body is still in the weak stage, and the coldness of watermelon will cause certain harm to the body, eating a lot of watermelon during this period is easy to make the body recover for a longer time.

3. Special population

For diabetics, you can eat some watermelons in moderation, but be careful not to eat too much. Generally, it is advisable to eat 25 to 50 grams at a time. In addition, for menstrual women, it is best not to eat watermelon, so as not to aggravate the coldness.

How to select male and female watermelons and the key points of selecting watermelons.

1, look at the bottom of the melon. The smaller the circle, the more prominent the butt of the melon, indicating that it is a melon; On the contrary, the circle at the bottom of the melon is big, and the concave melon is not sweet.

2. Look at the pedicel of the melon, which is fresh and curved, indicating that it is just picked. On the contrary, the pedicel of melon is straight and dry, indicating that the picking time is long and the melon is not sweet or fresh.

3, look at the melon pattern, clear, bright skin, smooth is a good melon. On the contrary, the lines of melons are messy, and there will be some yellow skins on one side. This kind of melon is slightly inferior. This part is where the melon sits on the ground and the sun can't shine. The less Huang Yue this position is, the better.

4, listen to the sound, this part is very important, when the shape of the melon meets our above conditions. Holding a melon in one hand and patting a watermelon in the other, if you hear a drumming sound, like patting your stomach full of water, there are some empty sounds, that is sweet and juicy melons. If you hear the sound of slapping, like slapping your forehead, it is an unripe melon.

Three steps of selecting watermelons

A look: identify the skin color, pedicle and navel of melon. Where the melon shape is correct, the texture of the melon with flower skin is clear and the color is dark; Black melon should be black and shiny. However, the pedicel and navel of melon should be tightly closed, slightly retracted, and the rattan handle is close to the skin downward, and the stem is thick green, which is a sign of maturity.

Listen 2: Hold the watermelon in your hand and pat it gently with your fingers. If there is a crisp sound of "plop, plop" and the hand holding the watermelon feels shaken, it is a mature watermelon, and generally the melon taste will be sweeter. If the sound is boring and there is no vibration, generally such watermelons have not yet matured, so pay attention when buying them.

Three proportions: judging by the naked eye, two watermelons of the same variety and the same size, the melon that is gently lifted is the melon with high maturity, whereas the heavier the melon, the lower the maturity. Because with the growth of watermelon, a considerable part of water will be consumed by transpiration in the later stage, thus accumulating more sugar (mortar), so the weight of mature watermelon is slightly lighter than that of watermelon of the same variety and size.

In addition, if you encounter a "gourd" shape when buying melons, flat melons, flat-headed melons, pointed-billed melons and pot-bellied melons are all deformed fruits. Most deformed fruits are caused by abortion or poor pollination or other reasons, so it is best not to buy deformed melons.

Nutritional value of watermelon

Melon pulp/pulp

According to nutrition experts, every 1 00g of pulp contains 94g of water, protein1g, 4.2g of carbohydrates, 0.3g of cellulose, various vitamins and minerals, as well as a lot of fructose, glucose, sucrase and rich malic acid, phosphoglutamic acid and carotene. Rich nutrition is also one of the reasons why people like to eat watermelon.

Sugar, protein and trace salt contained in watermelon juice can reduce blood fat and soften blood vessels, and also have certain curative effect on cardiovascular diseases. The protease contained in watermelon juice can transform insoluble protein into soluble protein, thus increasing the nutrition of patients with nephritis. Watermelon diuresis can quickly cool the human body, which is better than antibiotics for patients with fever and acute urinary tract infection.

Watermelon seed

We dry the remaining watermelon seeds after eating, which can be used as a nut snack after dinner. It contains fat, protein, dietary fiber and minerals such as potassium, sodium, iron, manganese and magnesium. Selenium and vitamin e are high in content. Eating watermelon seeds often can make the skin shiny and elastic, and watermelon seeds are good for people with indigestion. But because watermelon seeds contain high calories, people who lose weight should eat less.

watermelon peel

According to experts, many times we throw watermelon skin away as garbage. In fact, watermelon peel has high nutritional value. Studies have shown that watermelon peel is rich in amino acids, protein, pectin, vitamins and various trace elements. We can turn waste into treasure, make watermelon peel into various dishes, and fully absorb its nutritional value without wasting. Why not?

How to choose male and female watermelons 3. Nutritional value of watermelon

1. Watermelon contains 93% water and has low calories, so it is a good product for relieving summer heat and quenching thirst.

Watermelon is not only rich in water, but also rich in nutrition. It contains protein, sugar, calcium, phosphorus, iron, potassium, fructose, vitamin A and vitamin C, and also contains essential amino acids.

3. The sugar, salt, acid and other substances contained in watermelon can treat nephritis and lower blood pressure.

Taboos for eating watermelon

1, Chinese medicine experts believe that watermelon is a cold food, which is easy to hurt the spleen and stomach. Therefore, people suffering from deficiency-cold of spleen and stomach, chronic enteritis, gastritis and duodenal ulcer, or loose stool had better eat less. Normal people should not eat more, otherwise it will damage the spleen and stomach and cause indigestion or diarrhea.

2. People with diabetes should not eat watermelon. The sugar content of watermelon is about 5%, mainly glucose, sucrose and some fructose, which means that eating watermelon will increase blood sugar. Normal people can keep their blood sugar and urine sugar at a normal level because they can secrete insulin in time. People with diabetes are different. Eating too much watermelon in a short time will not only increase blood sugar, but also lead to acidosis and even life-threatening due to metabolic disorder.

3. Eat less iced watermelons. Although eating iced watermelon on a hot day has a good effect of relieving summer heat, it is very irritating to the stomach and is easy to harm the spleen and stomach, so we should pay attention to grasping the delicious temperature and quantity. Watermelon is best placed on the lowest floor of the refrigerator, where the temperature is about 8- 10℃, and the temperature is also the best. Don't eat more than 500 grams of watermelon at a time. Chew slowly. For people with dental caries (tooth decay) and tooth allergies, they will feel sour and painful after catching a cold, and people with poor gastrointestinal function are not suitable for eating iced watermelons.

4. Patients who have a cold and fever in summer often use watermelon to replenish water to reduce fever, but because it belongs to sweet and cold food, it is not suitable for colds and early colds, especially patients with symptoms such as chills and sweating.