Purple potato is not a genetically modified food. Transgenic can also get colored vegetables, but in our common purple potato, tomato, and color corn, most of them belong to natural varieties or hybrid varieties. Purple sweet potato is very early in our country, but these years, our country has introduced two major purple sweet potato varieties from Japan, and crossed it with domestic varieties to cultivate a series of purple sweet potato varieties. Purple potato is not genetically modified.
    Why purple potato is purple:
Purple potato is purple, the main reason is that it contains anthocyanins. It is said that anthocyanins are water-soluble pigments that can change color with the acidity and alkalinity of cell fluids. Usually, acid substances turn red, and alkaline substances turn green. Anthocyanin is a natural purple pigment additive and a natural strong free radical scavenger. It is safe and non-toxic. Although it is more expensive than synthetic pigments, it is still popular in the international market.
    GM food judgment method:
1. Season: In addition to greenhouse vegetables, other off-season foods are easily genetically modified.
2, color: different from the traditional is definitely genetically modified, such as colored cotton, colored peppers.
3, the head: According to the tradition, tomatoes also have a certain head, such as a small tomato like a thumb is absolutely genetically modified. For example, soybeans, also called soybeans, are beans made of tofu and soy milk. The shape should be like the waist of an animal. It is a bit flat, but the soybeans are all round, big, and like peas. The high yield is genetically modified.
4, taste: traditional corn is generally yellow corn, white corn, slightly sweet, and now the popular sweet corn, its sweetness is very high, is undoubtedly genetically modified.
5. Pests: Any crop that the pest likes to patronize is not genetically modified. Any pest that is afraid of pests, that is, no pests, or few pests, is genetically modified.
6. Yield: GM crops generally start in the first few years, and their yield is much higher than traditional crops.
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