Why do jujube boil with a layer of white stuff?

It turns out that in the process of boiling jujubes, with the continuous increase of water temperature, a glycoside will appear after the jujube slowly matures, and the white foam is produced by this substance, which is actually similar to the composition of soybean milk, and the soy milk will have a layer of white foam floating on it when it is not ripe. If you feel that it is not beautiful enough, you are afraid that the white foam will stick to the skin of the jujube, you can skim out the white foam with a spoon, so that the boiled jujube soup will look better. It turned out that this was the case, and I was always scared before, thinking that it was some kind of chemical.

Before we use red dates, scrub them with water, at this time we will find that there are many large and small gaps in the skin of red dates, we simply use water to wash and can not completely wash clean, at this time we can add some flour and salt to scrub the surface, the adsorption of flour is very strong, can absorb dirty things, salt is mainly large particles are relatively large and easy to scrub and also have the effect of sterilization, so that we can eat the red dates washed out with confidence.

Red dates, also known as jujubes, have a very high vitamin content in jujubes"Natural beauty pills"Jujube contains protein, sugar, trace calcium, and various amino acids that our body needs.

Jujube can nourish yin and yang, eliminate fatigue, improve memory, and improve our body's immunity. Female friends can keep their complexion ruddy by eating red dates. But because jujube is a great tonic food, you can't eat too much.

There will be a white stuff when jujubes are boiled.

1. White foam is the dirt in the jujube that is boiled, I don't think this is the reason, because the red jujube that is washed very cleanly is also like this after cooking.

2. The sugar in the jujube is boiled out to form crystals, and I think this statement is more credible, because the jujube contains a very high sugar content, and when the jujube is cooked, the sugar will dissolve into the water, and part of it will form white foam, which is somewhat similar to the formation principle of hoarfrost on the persimmon.

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After the jujube is boiled, there is a layer of white on the surface, this is because the jujube contains a lot of sugar, and after being boiled, some sugar will precipitate. This is all normal.

After the normal red dates are cooked, there will be no white things. You said that in this case, it is very likely that it has been processed, sprayed and polished by liquid wax, so that the jujube will look better. If you smell it and it smells pungent, it is best not to eat it.

There will be white foam after jujube cooking, which is caused by the precipitation of saponin in jujube and dissolved in water, in the case of ensuring that the jujube is not deteriorated and washed at the same time, it is normal to float a small amount of white foam in the middle of boiling jujube, the reason is that a compound in the jujube is tied out of the early skin at high temperature, forming countless small cannons gathered together Just like white ink to remove white foam, just drop in cooking oil and stir, this white foam is theoretically saponin beneficial to the human body, It is a special foam that is widely present in the plant kingdom, hence the name. That's all I know, I don't know anything else, I hope I can help you.

Jujube is a very popular food of the common people, and has the reputation of "natural vitamin pill", which has the effect of nourishing yin and yang, and nourishing blood. But we often find a phenomenon in the process of boiling jujubes: that is, there will be a lot of white substances on the inner wall of the pot or on the water surface of the pot where jujubes are boiled.

After making sure that the jujube has not deteriorated and washed at the same time, it is normal for a small amount of white foam to float in the pot when boiling the jujubes. Due to the fact that jujube contains a variety of bioactive substances, the white foam of jujube after boiling is theoretically saponin, like ginseng and yam contain this ingredient, which is beneficial to the human body. However, if you find that there is too much foam and a peculiar smell when you cook red dates, you should consider whether it contains preservative ingredients.

The white foam of jujube after cooking is caused by the fact that jujube contains saponin, which is precipitated and dissolved in water. If the jujube is not deteriorated and washed at the same time, it is normal for a small amount of white foam to float in the pot when boiling jujubes, the reason is that a compound precipitates the jujube skin at high temperature, forming countless small bubbles, which are gathered together like white foam, to remove the white foam, just drop in cooking oil and stir, this white substance is harmless to the body, and it is beneficial.

When boiling jujubes, as the water temperature rises, the jujubes slowly become mature, and a kind of glycoside will appear, which will produce white foam, which is the reason why white foam appears when boiling jujubes.

Because there are many pores in dried jujubes, when the air in the pores is discharged when boiling, small bubbles are formed, and when they are gathered together, they become a white thing.

Because jujube contains very high sugar, when boiling jujubes, the sugar will dissolve into the water, and part of it will form white foam, which is somewhat similar to the formation principle of hoarfrost on persimmons.

Why do jujube boil with a layer of white stuff? This is normal, this is after the jujube has been boiled, the saponin-like substance inside is boiled. A layer is formed. Foam. Not only jujubes, but also many ingredients have this phenomenon.

There is flesh in the jujubes, so when the jujubes are cooked, the skin of the jujube will break, and the pulp will be contained in the soup.

It might be edible wax! Some merchants will spray some edible wax on the dates.

When you cook it, there is a layer of white fungus on top, which is sugar.

Is it the nutrients inside?

This is a normal phenomenon, and the reason for the appearance of white suspended matter in boiled jujubes:

1. Because there are many pores in dried jujubes, the air in the pores expands when heated when boiled and precipitates through the jujube skin. This process is slow, so numerous vesicles are formed, which together look like white foam.

2. In addition, jujube contains trace amounts of glycosides, which will precipitate after boiling, just like the white foam produced when beating soybean milk, which is the cause of soybean saponins.

The white powder on the surface of jujube is mainly dust, and the dust in the air will fall on it during the regrowth of jujube, and it is easy to form white powder after a long time, so it can be cleaned before eating.

Jujube grows in the mountains, hills or plains below 1700 meters above sea level, and likes to warm fruit trees, with an average annual temperature of about 15 in the production area, the temperature in the bud germination period needs to be 13-15, the temperature in the branch and leaf development period is 17, the temperature in the flowering and fruit-setting period is 22-25, and the temperature in the fruit ripening period is 18-22.

Jujube trees are drought tolerant and waterlogging tolerant, but high air humidity is required during the flowering period, otherwise it is not conducive to pollination and fruit set. In addition, jujube has strong light-loving, sensitive to light, strong adaptability to soil, barrenness, and salt and alkali resistance. However, it is afraid of the wind, so you should pay attention to avoid the wind outlet during the construction of the park.

The first possibility is that the ash layer has not been cleared and interfered with.

The second possibility is a movement injury.

The third possibility is the overflow of sugar in the date.

If it's either moldy, it's high in sugar.

I also think it's sugar overflowing, because the canned jujubes I bought didn't have white powder at the time, and after being single for a while, I found that white powder appeared, but it didn't deteriorate, and the taste was still very sweet. I thought it was dust, but I kept the lid on it, and I didn't know how to get in, and it turned out to be a sugar spill.

It may be that you haven't washed it, the jujube is very dirty, it is dried outside, the wind and rain are blowing, and there will be a lot of dirty things floating on the jujube, you have to soak it in the freshly boiled water and then wash it, rinse it clean, there will be no more floating objects, and the other is that the jujube contains protein, and the white floating matter refers to it. It's as non-toxic as egg whites.

Red dates, also known as jujubes. It is characterized by a very high vitamin content, and has the reputation of "natural vitamin pills", which has the effect of nourishing yin and yang, and nourishing blood. Jujube is a temperate crop with strong adaptability.

Jujube is known as the "hardcore crop", which has the characteristics of drought tolerance and waterlogging resistance, and is the first choice for the development of water-saving forest and fruit industry.