Excuse me, can you help me identify if this black rice is real?

If the rice grains appear white after soaking in water, they are dyed. Now the black rice does not lose color after soaking, indicating that there are no quality problems such as dyeing. It is normal for purplish-red to appear after soaking, and as for the color in different shades, it is the result of anthocyanin dissolution.

Some black beans, sesame seeds, etc., will also have color after soaking. ”Yours should be real black rice.

How to distinguish between good and bad black rice.

The color of black rice is mainly due to the presence of anthocyanins on its epidermis. A slight soak in hot or cold water will bring the color out.

When black rice water encounters alkaline substances, it turns green, and when it encounters acidity, it turns dark red. If the general public has doubts about the black rice they bought, they can try it with vinegar. Because vinegar is acidic, if the black rice water does not react chemically when it encounters acetic acid, it must be caused by dyes.

In addition, it can be identified in the following ways:

1.Looking at the luster, the normal black rice epidermal layer has a luster, and the inferior black rice has no luster.

2.Looking at the skin, normal black rice is flaked when picked by hand, and if it is powdered, it is inferior black rice.

3.Looking at the rice heart, the rice heart of normal black rice is white, while the rice heart of ordinary rice is transparent and has no color. Black rice dyed with rice has a uniform appearance, but the color of the dye penetrates into the heart of the rice.

4.Looking at the soaked rice water, the soaked rice water of normal black rice is purple-red, and it is also purple-red or nearly red after dilution. If the water bubbled out is like ink, and it is still black after dilution, this is fake black rice.

It's true, the water in which you soaked the black rice can also change color.

At present, there are two common cases of black rice adulteration on the market, one is substandard or inferior black rice that has been stored for a long time, and it is shoddy after dyeing**; The other is to use ordinary rice that is dyed and then filled with black rice**. Natural black rice will also fade after washing, but it is not as powerful as dyed black rice. Consumers can make sensory identification from the following aspects when buying black rice:

One look: look at the color and appearance of black rice. Generally, black rice is shiny, the size of the rice grains is uniform, there are few broken rice, bursting loins (cracks on the rice grains), no insects, and no impurities.

The color of inferior and inferior black rice is dull, the size of the rice grains is uneven, the fullness is poor, there are many broken rice, there are insects, there are lumps, etc. For dyed black rice, because the black color of black rice is concentrated in the cortex, the endosperm is still white, therefore, consumers can scrape off all the outer cortex of the rice grains to observe whether the rice grains are white, if not, it is very likely to be artificially dyed black rice.

Second smell: Smell the smell of black rice. Take a small amount of black rice in your hand, take a hot breath on the black miha, and immediately smell the smell.

High-quality black rice has a normal fragrance and no other peculiar smells. Slightly peculiar smell or mildew odor, sour odor, rotten smell and abnormal smell are inferior and inferior black rice.

Three tastes: taste the taste of black rice. A small amount of black rice can be chewed in your mouth, or grated before tasting. High-quality black rice tastes good, slightly sweet, and does not have any peculiar smell. Black rice with no taste, slight peculiar smell, sourness, bitterness and other undesirable tastes is inferior or inferior.

1. Generally, black rice is shiny, the size of the rice grains is uniform, there are few broken rice, there are cracks on the rice grains, there are no insects, and there are no impurities.

2. Second smell: smell the smell of black rice. High-quality black rice has a normal fragrance and no other peculiar smells.

3. Three tastes: taste the taste of black rice. High-quality black rice tastes good, slightly sweet, and does not have any peculiar smell.

Rub by hand: Rub the rice with your hands to see if there is dye on your hands, if there is black dye, it is fake rice.

Nose smell: Authentic black rice has a natural rice fragrance after being soaked in warm water, and dyed rice has a peculiar smell.

Look at the color: The skin of authentic black rice is shiny, and the color is dark and light, while the dyed black rice is not shiny and the color is consistent.

Look at the epidermis: The epidermis that authentic black rice scratches with fingernails is flaky. If it's in powder form, it's low-quality black rice.

Look at the rice heart: The rice heart of authentic black rice is white. The kernel of ordinary rice is transparent and has no color. If the dyed black rice is dyed with regular rice, the color of the dye will penetrate into the heart of the rice and turn black.

Look at the soaked rice water: The soaked rice water of authentic black rice is purple-red, and it is also purple-red or reddish after dilution. If the soaked water is still black after being diluted like ink, it must be fake rice.

Add white vinegar: Black rice water will turn green when it encounters alkali and turn red when it encounters acid. Authentic black rice water turns red immediately when it encounters acid.

Randomly take some grains of black rice and put them into the cup, pour white vinegar into the cup, stir thoroughly, after a while, the white vinegar turns red into real black rice, and turns black into fake black rice.

[Differentiation method].

1. The color of black rice is naturally grown, black and shiny, and the color of the black rice looks more consistent; If it is dyed, it may appear dark black, will not shine in light, and may vary in shades of color.

2. There will be a small white spot at the tail of the real black rice (that is, the pedicle), and the "small white spot" of the dyed fake black rice will change due to dyeing. The black color of natural black rice is concentrated in the cortex, and the endosperm is still white; Because the dye penetrates into the inside of dyed black rice, the white color inside the rice grain looks impure and unnatural.

3. Normal black rice has melanin, which is very soluble in water, and it is normal for purple red to appear, but it is not the same black as ink. In addition, the black color of the surface layer of natural black rice is a water-soluble pigment, and it is normal for black rice to fade when soaked in water, and the higher the water temperature, the more unstable it is, but if it fades severely, it will become "white rice".

4. Scrape off all the black skin layer on the outside of the rice grain, or cut a grain of black rice to see the rice core, the real black rice is white, and the skin should have a flake rice skin; In general, rice is transparent, and under normal circumstances, there is no color in the rice core, and the skin is powdery or has no skin.

5. Take some black rice and put it in the mouth to chew, or grind it before tasting it, the real black rice smells a pure fragrance carefully, slightly sweet, and has no peculiar smell; Dyed black rice is chemically processed, so it either has no taste, a pungent chemical smell, or a peculiar smell, sourness, bitterness, and other undesirable tastes.

Suitable for people] 1. Juvenile gray hair, women with postpartum weakness, postpartum weakness, anemia, kidney deficiency, etc.

2. Patients with weakness of spleen and stomach, weakness and weakness, anemia and blood loss, palpitations, shortness of breath, cough and wheezing, slippery semen, frequent urination, etc.

1. Children or the elderly with weak spleen and stomach should not eat.

2. People with weak digestion after illness should not be in a hurry to eat black rice, but can eat some purple rice to recuperate.

3. People who are often sick and have weak constitution.

Hello, from the color, taste and texture, you can distinguish the quality and authenticity of black rice. First of all, look at the luster: good black rice has a shiny surface, uniform size of rice grains, and less broken rice; Bad black rice hair black; Secondly, smell the smell, take a small amount of black rice to take a hot breath, and then smell it immediately, good black rice has a normal fragrance and no peculiar smell.

The black color of natural black rice is concentrated in the cortex, and the interior is still white, which is very contrasting; However, dyed black rice will penetrate into the inside due to the dye, and the white color inside the rice grain looks impure and unnatural. You can also taste the taste of black rice, take a small amount of black rice and put it in your mouth to chew, or grind it and taste it, high-quality black rice tastes good, slightly sweet, without any peculiar smell; Tasteless, slightly peculiar, sour, bitter and other undesirable tastes are inferior, inferior or fake black rice. Normal black rice has melanin, and this melanin is very soluble in water, and it is normal for it to appear purple-red, as long as it is not the same black as ink.

Experts from the Breeding Center of the Municipal Academy of Agricultural Sciences also said that black rice itself contains melanin, and its melanin content is also different depending on the variety, some high and some low. The black color of the surface layer of natural black rice is a water-soluble pigment, and it is normal for black rice to fade when soaked in water, and the higher the water temperature, the more unstable. But if it fades badly, it will be a problem to turn into "white rice".

1. Washed, the soaked rice water of normal black rice is purple-red, and it is also purple-red or nearly lilac after dilution. If the soaked water is like ink, and it is still black after dilution, and some say that it can be dyed on the container and hands, then it is estimated that it is fake black rice, and if it is still black after washing five or six times, it is very likely to be dyed fake black rice. 2. Look at the color, the color of real black rice is naturally grown, it is black and shiny, and the color of the black rice looks more consistent, if it is dyed, it may look dark black, it will not be shiny in the light, and the color may be different shades.

3. Look at the appearance, you should carefully see if there are small white spots at the tail of the black rice, the tail of the real black rice growth is the pedicle, there will be a small white spot, and after dyeing, this "small white spot" will be dyed color. 3. Scrape black rice, consumers can also scrape off all the black cortex outside the rice grains; If it is really black rice, the rice grains inside are white. Or cut a grain of black rice to see the rice core, the authentic black rice core is white, while the general rice is transparent, and there is no color in the rice core under normal circumstances.

When dyed black rice, the color of the dye seeps into the rice core. You can also use your fingers to scrape the rice skin, the skin of authentic black rice should have a flaky rice skin, and the bad black rice is powdery or no skin. I hope you are satisfied with my answer.

The heart of true black rice is white. The heart of ordinary rice is transparent and has no color, and the color of the dye penetrates into the heart of the black rice dyed with rice, although the appearance is uniform.

The truth of black rice:

1. Looking at the color, the color of real black rice is purple and bright, and the feel is smooth and delicate, while the dyed black rice has no luster.

2. Looking at the epidermis, the epidermis of real black rice is flaky, while the epidermis of dyed black rice is powdery.

3. Looking at the rice heart, the rice heart of real black rice is white, and the dyed rice is black, because the color of the dye will penetrate into the transparent rice heart of ordinary rice, and then become black.

Fourth, look at the soaked rice water, the soaked rice water of real black rice is purple-red, and the color of the soaked rice water of dyed black rice is black like ink.

5. Soak it in vinegar, authentic black rice will turn red when soaked in vinegar, while dyed black rice will not change in any way!

Sixth, smell the fragrance, the real black rice to the black miha, immediately smell a faint fragrance, no other odor, while dyed black rice will smell a sour smell.

ps: Black rice fading does not mean dyeing black rice, there is a pigment called anthocyanins in black rice, which will dye the water purple red after being dissolved in water, and this anthocyanin will turn red when it is acid.

Boil boiling water, put black rice into boiling water, and after two to three hours, you will find that as long as it is fake black rice, that is, the so-called fake black rice, it will immediately fade, if it is real black rice, it will basically not fade, after soaking, you will find that the water will turn black or purple-black (the so-called ink black), if it is real black rice, the color of the water will also change slightly, but it is not very obvious compared to fake black rice......

First of all, take out 10 grains of black rice at random from the purchased black rice (buy a small amount), place them in a porcelain plate at intervals, and then tick a dizzle of practical white vinegar on each black rice, after a while, if the black rice turns purple, it means that you have bought genuine black rice, if the black rice has not changed color or partially changed color, it means that you have bought fake or adulterated black rice. Because black rice contains anthocyanins, which turn purple-red when exposed to acid, this method is the easiest and most scientific way to identify black rice.

There are many ways to identify black rice, such as:

1. Look at the luster. The normal epidermal layer of black rice is shiny, and low-quality black rice has no luster.

2. Look at the epidermis. Normal black rice is flaked when picked by hand, and if it is powdered, it is inferior black rice.

3. Look at the rice heart. The core of normal black rice is white, and the black rice dyed with rice has a relatively uniform appearance, but the color of the dye will penetrate into the heart of the rice.

4. Look at the soaked rice water. The soaked rice water of normal black rice is purple-red, and if the soaked water is like ink, it is still black after dilution, which is fake black rice. Good quality black rice is shiny, the size of the rice grains is uniform, there are no insects, and there are no impurities.

It has a normal fragrance, put it in the mouth and chew it carefully, high-quality black rice tastes good, slightly sweet, and does not have any peculiar smell.

There is a kind of soaked rice water is also purple-red rice, it is purple rice, rich in zinc, iron, calcium, anthocyanins, folic acid, dietary fiber, protein, vitamin B1 and other nutrients, is a healthy food for children to grow and women to maintain beauty, but also suitable for all kinds of people to eat.

Fake black rice is made by processing ordinary rice into brown rice and dyeing it, or real black rice is colored after anthocyanins are extracted, and it is difficult to distinguish the appearance. But it is impossible for all rice to be processed without breaking rice, so we can start from here. The method is to select 30-50 grains of broken rice, the smaller the corner rice grains, the more can not be let go, observe whether the section is dyed, if all the sections are white or transparent white is true black rice.

If even one grain is found to have a black film like asphalt, or other black, purple, eggplant, etc., it is fake or adulterated black rice. The epidermal layer around the cross-section can be scraped to observe.