What is it that boiled sweet potatoes have this bit of blackness?

Boiled sweet potatoes are a bit dark, this is because the sweet potatoes have undergone some deterioration during storage, and you have to dig up the black place before you can eat it, otherwise you will feel that it tastes a little weird.

If you have this black sweet potato, that is the sweet potato, because it is spoiled because of the disease, and there is this black one, when you go to eat it. There's a bad smell.

Chu Hong is a little hi, because you may not have the time, the time has not been long, or the water is too little, a little mushy!

There is nothing wrong with a small amount. Wash the sweet potatoes before cooking, and peel off the black areas and skin after cooking. If sweet potatoes have a large number of dark spots on the skin, they must not be eaten.

The sweet potatoes are a little dark, I think it's oxidized, it's okay. It was still very tasty and didn't change the taste.

If you boil a sweet potato, if it's a little dark, it's possible that the sweet potato looks like this in the ground.

What is it that boiled sweet potatoes have this bit of blackness? This is a normal phenomenon, maybe after you peel the sweet potato, it will oxidize after washing it with water, and it will not affect the food.

If there are black spots on the skin of boiled sweet potatoes, there may be some rice or no disease.

There is no need to eat Zhenglonghua, because this should be Aspergillus flavus pants, and if you eat it, it will cause cancer.

It may be that the starch in the sweet potato is cooked, and its own starch undergoes an oxidation reaction with the air.

Is this going to be like this after a long time? The black one doesn't look good.

Boiled sweet potatoes have black spots because the sweet potatoes are a little bad and have been left for a long time.

What is black, that's black spot disease.

This kind of sweet potato with black spots on it is not edible.

Sweet potatoes are infected with pathogenic microorganisms and produce dark spots, which not only invade the epidermis, but also invade the potato flesh and even produce toxic substances sweet potato ketone and sweet potato ketone alcohol. Experiments have shown that these two substances can cause great harm to the liver and lungs of animals, and even if sweet potatoes are cooked, their toxicity will not be reduced. Therefore, when sweet potatoes have this black spot that invades the flesh and rots and becomes soft, it should be avoided.

However, there is also a dark spot that only damages the potato skin, which is often caused by the sweet potato itself and does not produce toxins, which can be eaten normally.

The treatment method of the black spots in the sweet potato is to first clean the sweet potato and then dig out all the black spots in the sweet potato, and then the sweet potato is really ripe and can be used.

When the sweet potato is put into the cellar, splash or dip it with carbendazim, thiophanate-methyl or etheroxystrobin, etc. At the beginning of storage, the temperature is controlled between 10-14 and the relative humidity is about 80%, which is the key to safe storage and prevention of black spot disease.

For the black spots in the sweet potato, this is moldy, so you must cut off this black spot when eating, otherwise it will become moldy.

After the sweet potato is cooked, it turns black on the outside. This is an abnormal situation, it may be that there is a problem with the quality of the sweet potato itself, which is the cause of rotting and deterioration, or it may be that the steaming heat is too large and the phenomenon of pasting the pot.

Generally, normal sweet potatoes are pale yellow and light red, so if that black color appears, it is recommended not to eat it anymore to avoid food poisoning.

Harmful to physical health.

Summary. 1. The middle of the steamed sweet potato is black and moldy.

2. The weather is hot and the temperature and humidity of the environment, sweet potatoes are easy to mold and rot and deteriorate, usually the spoiled ones must be cut to know the good or bad, rot and mold can be seen, but after a long time, the sweet potatoes will dry out, and the meat inside will change color, which is not edible.

Hello. 1. The middle of the steamed sweet potato is black and moldy. 2. The weather is hot and the temperature and humidity of the environment, sweet potatoes are easy to mold and rot and deteriorate, usually the spoiled ones must be cut to know the good or bad, rot and mold can be seen, but after a long time, the sweet potatoes will dry out, and the meat inside will change color, which is not edible.

If your cooked sweet potatoes turn black in color, the main reason is that you have not mastered the skills of cooking sweet potatoes, which leads to the oxidation reaction of the phenols in the sweet potatoes when they come into contact with the air.

Sweet potatoes contain more phenolic substances, which are particularly easy to oxidize after contact with air to form puff quinone compounds, and are more likely to undergo oxygenation reaction when the temperature is high. When a large number of quinones are formed on the surface of sweet potatoes, they accumulate together to form melanin blouses, which can cause cooked sweet potatoes to turn black in color.

The way to prevent sweet potatoes from turning black after cooking is super simple, as long as you master the eight words, you can easily do it: "boil the pot under water, cut and cook".

When we were children, we all grew up eating sweet potatoes, and a big pot of sweet potatoes would be cooked at home every day, and people would take the rest to feed the pigs, and there was never a phenomenon of blackening when cooked. Because our old family boiled whole sweet potatoes with the skin on, and they were all boiled in a pot, the chunbihuol substances in the sweet potatoes had no chance to be oxidized at all.

Modern people like to peel off the skin of sweet potatoes when boiling sweet potatoes, so when cooking sweet potatoes, they must master the eight-character mantra of "boiling the pot, cutting and cooking". The correct way to cook it is like this-

First, sit in a pot and boil water, and use the boiling time to wash the sweet potatoes with the skin on. When the water is boiling, quickly peel off the skin of the sweet potatoes and adjust the heat to keep the pot boiling.