How to tell if black rice is dyed? How to identify black beans and black rice if they are dyed

The first trick is to look at the gloss. The normal epidermal layer of black rice is shiny, and low-quality black rice has no luster.

The second trick is to look at the epidermis. Normal black rice is flaked when picked by hand, and if it is powdered, it is inferior black rice.

The third trick is to look at the rice heart. The kernel of normal black rice is white, while the kernel of regular 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.

The fourth trick is to soak in 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.

How to identify the authenticity of black rice.

1. 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, so 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 that dyed black rice.

2. 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.

3. Taste: 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 Look: Authentic black rice is only black on the surface, peel off the rice skin, the heart of the rice is white, the color of the rice grains is dark and light, and the color of dyed black rice is basically the same.

2 Smell: Authentic black rice has a natural rice fragrance after soaking in warm water, and dyed rice has no rice fragrance and peculiar smell.

3 Touch: Authentic black rice is brown rice, and there are rice grooves on the rice.

4 Rubbing: Authentic rice does not fade, and it only fades when washed, while dyed rice generally fades when rubbed by hand.

The surface of natural black rice is bright and the luster is uniform, and the color of dyed black rice will be relatively dull; After the black waxy layer on the outside of natural black rice is peeled off, it presents white and translucent rice grains; After peeling off the outer layer of dyed fake black rice, it will be found that the rice grains inside are bleeding and will still turn black.

True black beans have "white spots" in the middle. And after dyeing black beans, this "white dot" will also be dyed color; Real black beans do not fade on the white paper. The color of dyed black beans will leave color on the white paper after rubbing. This method also applies to red beans.

The kernel of black beans is not black, there are two kinds of kernels of black beans, one kind of black bean kernel is yellow, this is expensive and good, the green black beans you buy are not fake, it is another type of black beans, long bean sprouts that can turn green, comparatively cheaper than black beans of yellow kernels, but not bad, I can tell you that there are green kernel black beans, it itself is black beans, I hope it can help you, do you want to eat black beans to grow black long hair?

So how to distinguish the authenticity of black beans? A staff member of the Municipal Academy of Agricultural Sciences told reporters that because the epidermis has pigment, black beans will indeed fade after being soaked in water, and they are generally brownish-red. He suggested that the public can use a few black beans to scratch on the white paper when buying, and the dyed black beans will leave black marks.

You can also peel off the outer skin of black beans, the inner wall of real black beans is white, and the dyed ones are black. You can also soak black beans in water for a few days to see if they sprout, and dyed black beans can't sprout.

You can't see it, only boil it in a pot or soak it in water.

Black rice is a naturally black rice species, and if it is dyed, its appearance may be unnatural or flawed, and its quality will also be affected. Here's how to identify whether black rice is dyed or not: Observe the color of the rice grains:

The color of natural black rice is relatively uniform, and the surface of the rice grains is shiny, while the color of dyed black rice may be uneven, and the color may be too dark or too light in some places, and the surface of the rice grains may not be luster. Sniff: Natural black rice has a faint rice fragrance, while dyed black rice may have other odors, such as the smell of dye.

Look at the package label: If the package label of black rice states that a certain pigment is added, then this black rice is not natural black rice, but dyed black rice. **：

The cost of dyed pants and smart black rice is lower, and Hu Doing Answer is generally cheaper than natural black rice. If the ** is too low, especially the black rice that is significantly lower than the market price, it may be dyed black rice. In short, if you want to buy natural black rice, it is recommended to choose a regular brand or buy certified organic black rice, and also pay attention to the label and ** and other information on the package, so as not to be deceived by dyed black rice.

1. Look at the luster When buying black rice and destroying dates, first look at its gloss, the new black rice is black and bright and does not fade, the sun is black and bright and not dirty, and the high-quality black rice is bright and shiny, but the inferior black rice looks dull. 2. Look at the high quality and normal black rice of the rice heart, the rice heart is white, if the dyeing is missing black rice, the color of the dye will soak into the rice heart, and the rice heart is black. 3. Look at the soaked rice water, the anthocyanin-rich substances in the epidermis of black rice are easily dissolved in water, and it looks a little purple-brown or gray-brown, which is a normal phenomenon.

High-quality black rice cooks quickly and has a good taste, while low-quality black rice tastes generally not easy to cook. How do you know for sure that anthocyanins are dissolved? You can use white vinegar and baking soda to verify that the black rice you buy is real black rice!

1. Look at the color. The normal black rice epidermis is shiny, while dyed black rice is not shiny.

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

3. Look at the rice heart. The heart of normal 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 Iwayyu, the color of the dye will penetrate into the heart of the rice and turn black.

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

Moreover, the black rice water will turn green when it encounters alkali, and it will turn red when it encounters acid, and the black rice water with Mu Zong will immediately turn red when it encounters acid.

1. You can observe the black rice after soaking it in water, if the color is jet black, it is dyed rice, and the water soaked in normal black rice is purple-red;

2. The black color of natural black rice is concentrated on the surface, and the inside is white, which is contrasting. The black rice that has been artificially dyed scrapes off the outer surface of the rice grains, and the white color of the rice grains is not pure;

3. You can see whether the black of the black rice is uniform, the color of the real black rice is the same, and the color of the dyed black rice is different and uneven.