It's said on the Internet that "white seed ripening watermelon is harmful to human body". Have you ever eaten white seed watermelon? Can you eat white seed watermelon? White seed watermelon is ripening watermelon? White seed watermelon is mostly seedless watermelon, is it harmful to human body? Let's let Xiaobian answer for you one by one.
Why are the seeds white?
'now, no matter the watermelon bought in the supermarket or the watermelon presented after the meal in the restaurant, most of the seeds are white. The standard 'black seed red flesh' of watermelon has changed now.
Some fruit shop owners say the melons are not ripe and picked in advance, so the seeds are white. Picking ahead of time is due to long-distance transportation. Of course, there are some white seed watermelons because of their varieties. Does not affect consumption.
Is white seed watermelon ripening?
Experts said that at present, the white seeded watermelon seen in the market is mainly seedless watermelon, while a few ordinary watermelons appear white seeded, which is caused by the use of plant hormones. Watermelon is a diploid plant, which has two groups of chromosomes. However, seedless watermelon is triploid. Because triploid cells have chromosome disorder during meiosis, triploid watermelon can not form seeds. Citizens see that the white seed of watermelon is the germ of watermelon. There are many germs in a watermelon, which makes people think that the watermelon seed is white.
Experts also said that if the fruit of watermelon wants to grow up, it must first blossom and pollinate, fertilize and seed, but the growth conditions need the temperature above 25 ℃. When the early maturing watermelon in the greenhouse cultivated in early spring blooms, the temperature is relatively low, so it is difficult for the watermelon to blossom and pollinate normally. For this reason, melon farmers will smear a small amount of plant hormones on the handle of the young flowers of watermelon in early spring to assist the flowering and fruit setting of watermelon. In this way, the seeds of Zucchini will not develop, so when the watermelon matures, the seeds will turn white.
Can white seed watermelon eat at ease?
'white seed watermelon has no problem in food safety and has no impact on human health. '
First of all, the concentration of plant growth regulators added to watermelon is very low, and the maximum concentration is only about 30 parts per million.
Secondly, the amount of plant growth regulators is very small. The farmers only paint a little bit on the handle of the watermelon, and the weight and volume of the melon will increase thousands of times from a flower to a melon. From growth to maturity, watermelon generally takes about 35 to 40 days. The concentration of plant growth regulators is basically degraded, which will not cause any harm to human body.
In addition, for the recent spread of "watermelon injection sweetener" on the Internet. Zhao Jianyang said that first of all, artificial addition of plant growth regulator zucchini has the same effect as the endogenous plant hormone zucchini produced by watermelon itself, which can also make watermelon mature and reach its proper sweetness, so this' white seed watermelon 'is also very sweet. If the watermelon is injected with sweetener, the watermelon will easily rot immediately, and the storage period will be greatly shortened, and the injection of sweetener will not pay off.
Can I eat the ripening watermelon?
'white seed watermelon has no effect on human health. Experts said that ripening watermelon is a plant hormone, which is also produced in the normal growth of watermelon. And the concentration of this hormone is very low, the dosage is very little, and the growth cycle of early maturing melon is relatively long. When the watermelon is fully mature, this hormone is basically degraded.
'if the plant hormone is too much or the hormone is not used properly in the season, the melon will become deformed. 'deformed melons are generally screened and eliminated in the production area. As for the spread of watermelon injection on the Internet, it is also nonsense.
How to distinguish ripening watermelon?
Some friends, after buying watermelon at ordinary times, feel that watermelon is not sweet at all, and the color is not even. They will say that it may be ripening watermelon, but how to identify ripening watermelon? There are certain skills. Only by learning to identify ripening watermelon, can we avoid being cheated.
1. Listen to the voice to identify the ripening watermelon. When you buy a watermelon, you can first tap the watermelon with your hands to identify whether it is a ripening watermelon from the sound it makes. If it is a ripening watermelon, the sound it makes when people tap it will be 'dumb', while the sound of a naturally mature watermelon is crisp and bright.
2. Look at the watermelon seed to identify the ripening watermelon. When you buy watermelon, you can tell whether it is a ripening watermelon by the appearance of the watermelon seed. The watermelon seeds of the normal mature watermelon are black, and the particles are also very full. However, most of the watermelon seeds are immature, very small, and there are many white seeds.
3. Taste identification: the taste of ripening watermelon is very different from that of natural ripening watermelon. Those watermelons that are ripened by injection are also very sweet, but their sweetness is uneven, especially near the watermelon and melon base, which makes people feel particularly sweet. The farther away from the melon base, the lighter the sweetness. This is a typical ripening watermelon. It is a kind of ripening watermelon by injection at the melon base Ripe.