Can you eat sweet potatoes that turn black after cooking, and can you eat sweet potatoes when they a

If sweet potatoes are stored for too long or in too humid places, sweet potatoes may be infected with black spot disease due to some molds. This sweet potato with dark spots contains a variety of toxins that can cause poisoning when eaten by humans. It is not recommended to eat.

Sweet potatoes are black when cooked and can be eaten, but they turn black because the starch in sweet potatoes turns black when exposed to iron, which is a normal phenomenon. Sweet potato, scientific name, is an annual herbaceous plant with round, oval or spindle-shaped roots in the underground, and the shape, skin color and flesh color of the roots vary depending on the variety or soil. The shape and color of the leaves often vary from variety to variety, and sometimes within the same plant.

1. If it is a natural phenomenon that produces blackening after oxidation, it can be edible. Because sweet potatoes contain starch, the starch will change color when it reacts with oxygen in the air, and sweet potatoes can be eaten in this case.

2. If it is blackened due to decay and other conditions, it is not edible. If the blackened area of the sweet potato smells unpleasant, it may be spoiled and inedible.

After the sweet potato is cooked, if it is placed in the air for a long time and is in contact with oxygen, it will sometimes turn black, and it can be eaten in this case. But if the dark area has a bad smell or is hard, then you can't eat it.

Can sweet potatoes be eaten when they turn black when cooked? Of course, it can't be eaten, it's cooked and blackened, which proves that it's spoiled inside.

Hello, the sweet potato turns black after cooking, so it is generally not edible, because it has turned black, it is already abnormal.

Can I eat sweet potato assistant after it turns black, sweet potato can't be eaten if it turns black after cooking, which means that the ground is slippery and has been broken, so it can't be blackened ten times.

Can sweet potatoes still be eaten when they are cooked and turned black? When it is cooked, it turns black, and it can no longer be eaten, probably because it is not visible when it is raw, and it can only be seen after it is cooked.

Definitely not, in fact, I think it is better to control it as much as possible, in fact, sometimes I think this situation may be the reaction of some substances in it.

The sweet potato turns black after cooking, of course, you can't eat it anymore, because it turns black, it's likely to be spoiled, so you can't eat it anymore.

The sweet potato turns black and can't be eaten after cooking, because well, he has a gas army, right? Therefore, it is not a sweet potato that can not be eaten after cooking.

The sweet potato turns black after cooking, which should be the reason why the sweet potato has become moldy and spoiled, and such sweet potatoes can no longer be eaten.

Sweet potatoes turn black after cooking, which is impossible, it should be the reason for storing them for too long, or do not use them again.

After cooking, it has already deteriorated when it turns black, and it is inedible, and there is aflatoxin, which will be poisoned if you eat it.

Sweet potatoes have changed after planting, so they can be eaten without any problems, and these are caused by too high firing temperatures.

After the melon is cooked, it turns black and can be eaten, just remove the blackened part.

It is normal for sweet potatoes to turn black if cooked, and if you leave it for a long time, it will oxidize to produce such a color.

I think it's enough to remove the black areas and eat only the white ones.

It can be eaten, sweet potatoes can be eaten raw, so they can be eaten even when they are not cooked thoroughly. It's just that such sweet potatoes are hard, and the taste is half-ripe, neither raw crisp and sweet, nor ripe sweet and soft, and the taste is very bad.

However, it is not easy to digest and absorb after eating, so it is recommended to put it back in the pot and continue to cook until it is fully cooked before eating. Sweet potatoes are eaten uncooked, and the starch particles they are rich in are not destroyed by high temperature, which is difficult to digest after eating, and is prone to discomfort such as bloating.

The amount of time it takes to cook sweet potatoes depends on the size and cooking method. Generally speaking, the smaller the sweet potato, the easier it is to cook, and the longer it takes to cook the larger the potato, it is recommended to cut it into small pieces before cooking it to shorten the cooking time.

Medium-sized, about 200 grams of sweet potatoes, are cooked in a pressure cooker and can be cooked in 10-13 minutes. Add water to the steamer and cook for a longer time, about 20 minutes. Sweet potatoes need to be turned over in the microwave, and it takes about 20 minutes, which is even longer for larger ones.

In most cases, it is relatively common for steamed sweet potatoes to turn black, it may be caused by oxidation, it may be caused by freezing, it may also be caused by spoilage, etc. Let's take a closer look!

Polyphenols oxidize and turn black.

Sweet potatoes contain more phenolic substances, and there is generally no oxidation when the sweet potato is complete, but in the process of peeling and cooking sweet potatoes, the phenolic substances inside the sweet potato will come into contact with the oxygen in the air to form quinone compounds, and the temperature can promote oxidative browning, and the accumulation of quinone compounds will form melanin clusters, causing the sweet potato to turn black.

Sweet potatoes turn black from the cold.

The best storage temperature of sweet potatoes is 10 to 14 degrees Celsius, and when it is lower than 10 degrees Celsius, sweet potatoes are prone to chilling injury, so improper storage of sweet potatoes will appear black under the condition of chilling damage.

Sweet potatoes spoil and turn black.

Sweet potatoes contain a lot of water and carbohydrates, which is a good medium for bacterial growth, so it is very easy to be bred by bacteria, and bacteria breeding on sweet potatoes will cause sweet potato deterioration and sweet potato tissue damage, and the invasion of oxygen will also become easy, so sweet potatoes will turn black after boiling.

Suggestions: This is the browning of starch, on the one hand, sweet potatoes contain oxidase, which will change color when exposed to oxygen, and on the other hand, starch will turn black when exposed to iron, so it will appear green. However, this discoloration does not affect consumption.