Purple rice turns white after washing it several times, isn t it normal?

It is not normal for the purple rice to turn white after washing it several times. When washing, the good purple rice fades slightly, and the rice washing water is light purple and slightly red; The dyed rice fades very seriously, and the rice washing water is purple-black. Slight discoloration of purple rice is normal because the seed coat and aleurone layer of purple rice contain anthocyanins.

When washing rice, anthocyanins dissolve in water, which discolors the water. In addition to purple rice, red beans and black sesame seeds will fade slightly when washed. Additional Information:

In addition to color loss, there are many natural foods that have color loss. Their discoloration is not necessarily due to the addition of artificial colors, but is related to the natural nature of the pigments.

For example, when making purple sweet potato cake, baking powder is added to purple sweet potato.

, the purple cake base will turn blue-green. This is because anthocyanins are red when they are acidic, and when alkaline baking powder is added, the pH value is added.

When it rises, the anthocyanins become alkaline and turn blue. For example, after cutting apples, potatoes, pears, etc., after a while, the surface of the flesh turns black-brown; Mung bean soup.

It's not normal, how can natural things turn white after washing a few times, it's obvious that it's fake dyed, besides, purple rice won't turn white overnight, let alone wash it when it's cold.

This should be abnormal, mostly fake rice made of paint. Normal rice, no matter how many times it is washed, does not change color.

The purple rice you said will not turn white if it is washed several times, because this may be dyed rice, and the dyed rice will not be white if you wash it with water.

It is normal for purple rice to lose color, because the seed coat and aleurone socks of purple rice are found to contain anthocyanins. When washing rice, anthocyanins dissolve in water, which discolors the water. In addition to purple rice, red beans and black sesame seeds will fade slightly when washed.

The color fading can also tell the authenticity of purple rice. When washing, the good purple rice fades slightly, and the rice washing water is light purple and slightly red; The dyed rice fades very seriously, and the rice washing water is purple-black.

Anthocyanins have health care functions, and the action should be light when washing rice, just 1 time, so as not to lose too much pigment and reduce the nutritional value.

How to identify purple rice:

The first trick: look at the appearance. Generally, the shape of black rice is uniform, but the color is not very uniform. On the other hand, dyed ones are uniform in color but uneven in shape. And if you look closely, real black rice will have rice grooves and textures, and fake black rice generally does not have rice grooves.

Trick 2: Smell the smell. Black rice is a type of rice, and real black rice smells like rice. Fake black rice definitely doesn't have it, and the black rice dyed by hand feels very bad.

The third trick: wash it. Black rice will appear purple-red when soaked in water, and the higher the water temperature, the darker the color. After the dyed black rice is soaked in water, it generally appears ink-colored and is easy to rot.

It is normal for purple rice to fade, because purple rice is rich in anthocyanins, and anthocyanins will be dissolved in water, so the water will change color, if the purple rice becomes white after washing several times, then it is abnormal, because even if it is decolorized, it will not completely fall off.

The same fading is also the only criterion for judging the authenticity of purple rice, if it fades slightly when washing rice, then it proves to be purple rice, and the dyed rice usually fades very seriously, and the water of washing rice will generally appear purple and black.

You put the purple rice on a white plate one by one, drop a drop of white vinegar on each grain of rice, and after a few minutes, the white vinegar turns red, proving that the purple rice is real.

You can calculate the probability that the more grains of white vinegar turns red in the case of testing 10 grains of rice, the more proportion of real purple rice will be in the product you buy.

Summary. Dear, I'm glad to answer for you, if the fading is not very strong, it should be normal, if it completely becomes 100 meters after washing, it is fake, it is dyed, it is best not to eat it. It is normal for purple rice to fade, because the seed coat and aleurone layer of purple rice contain anthocyanins, and it is because of the presence of anthocyanins that purple rice appears purple.

When washing rice, anthocyanins dissolve in water, which discolors the water. <>

Why did purple rice turn into white rice after washing?

Dear, I'm glad to answer for you, if the color loss is not very strong, it should be normal, if the rotten orange is completely turned into 100 meters after washing, it is a fake eggplant cover, it is dyed, it is best not to eat it. It is normal for purple rice to fade, because the seed coat and aleurone layer of purple rice contain anthocyanins, and it is because of the presence of anthocyanins that the hungry purple rice is purple. When washing rice, anthocyanins dissolve in water, which discolors the water.

Decolorization is very common in colored rice, such as black rice, red beans, black sesame seeds, etc., which will fade slightly when washed. "However, there are also a few unscrupulous traders who have used pigments to dye Ono rice and sell it as purple rice in order to make a profit. Consumers should learn to distinguish, first of all, we must look at the color of the light core spine and epidermis of purple rice, good purple rice black and bright through the reddish, and dyed rice color dark and <>black

If you don't understand, don't mislead people, dyed rice, rice hearts are black, purple rice can be completely whitewashed, because rice hearts are white, purple rice is different from ordinary rice is slender, and there is a rice hook, you ** to find this kind of 100 meters.

Do you lose color? Rice washing water turned red? I'm afraid it is"Color purple rice"Let's do it! If you have doubts, don't eat it, rice is a trivial matter, and health is important.

If the color loss is not very bad, it should be normal, if it is completely colorless after washing, it is fake, it is dyed, it is best not to eat.

It is normal for purple rice to lose color because the seed coat and aleurone layer of purple rice contain anthocyanins.

It is because of the presence of anthocyanins that purple rice is purple. When washing rice, anthocyanins dissolve in water, which discolors the water. "Decolorization is very common in colored rice varieties, such as black rice, red beans, black sesame seeds, etc., which will fade slightly when washed. ”

However, it is understood that a small number of unscrupulous traders have used pigments to dye rice and sell it as purple rice in order to make profits. Consumers should learn to distinguish, first of all, look at the gloss and skin color of purple rice, a good purple rice black and bright with a reddish light, while dyed rice color is dark and black. Secondly, when washing, the good purple rice fades slightly, and the rice washing water is light purple and slightly red; The dyed rice fades very seriously, and the rice washing water is purple-black.

Knowing that the fading of purple rice is a normal phenomenon, finally, experts reminded that anthocyanins have health care functions, and the action should be light when washing rice, just 1 time, so as to avoid excessive loss of pigment and decline in nutritional value.