As we all know, purple potato is purple, but the porridge is blue-green, and the water is green. Why? Is the water green? Can you eat it? Why is purple potato porridge blue-green?
How is purple potato porridge blue-green?
Purple potato porridge turns blue-green because the anthocyanins in it will change color when meeting alkaline substances, and turn purple when meeting acid, which is normal.
Because purple potato is rich in anthocyanins, which is a kind of water-soluble pigment, and anthocyanins will change color when they meet acid and alkali, turn blue-green when they meet alkali, and turn red when they meet acid, which is a normal phenomenon and can be eaten safely.
The color of purple potato is due to the anthocyanins in it. This natural pigment is purple in neutral environment, purplish red in acidic environment, and blue in alkaline environment. Generally, purple potato porridge is easy to turn blue or even green due to water or other reasons. Just add a little bit of sour liquid like white vinegar or lemon juice to turn purple.
Purple potato boiled water is green, can you eat it?
You can eat it. The reason is that purple sweet potato is rich in anthocyanins, which is an organic pigment and turns blue when encountering alkaline substances. Don't worry. It's harmless. Anthocyanins can be a good thing, anti-cancer, anti-aging.
After hearing about the nutritional value and delicious taste of purple potato, many people will go to the supermarket to buy it and have a try. But this test gave rise to a problem. The water for boiling purple potatoes is green. Is this the case of Shenma?
In this case, there is no need to panic too much. Because purple potato is rich in anthocyanins, anthocyanins is an organic pigment, encounter alkaline substances will turn blue. Anthocyanins are a good anti-cancer and anti-aging agent.
Anthocyanins are the most direct, effective and safe free radical scavengers for disease prevention and human health. Usually, we usually take vitamin C and vitamin E to eliminate free radicals, and anthocyanins are far more than vitamin C and vitamin E in this aspect.