Is purple pitaya dyed? General merchants don't dye purple pitaya. The red pitaya is brightly colored because it contains a lot of natural pigment anthocyanins. Experts told reporters that they want to dye ordinary dragon fruit into red hearts. Rough-made? In exchange for benefits, the cost of counterfeiting is too high, and it is not worth the loss.
It is understood that the natural pigment content in natural red-hearted pitaya is very high. If the common pitaya is completely dyed into red hearts without being found, it needs a high dose of artificial pigment, which is costly and labor intensive. No one would do that. It turns out that it is not easy for pitaya pulp to turn dark purple. In this case, everyone can rest assured.
Pitaya is difficult to dye artificially. Artificial dyeing mainly depends on two methods, one is soaking method and the other is injection method. If soaking dyeing method is used, the color can not completely penetrate into the pulp, so soaking method is not desirable. If injected, what about the mature pitaya? Dyeing needle? , which will lead to uneven pulp color and easy to be found. If artificial pigments are continuously injected during the planting of pitaya, the fruit itself may not grow normally.
To sum up, it is basically impossible to dye pitaya. He also told reporters that at present, according to the information of the Institute of Agricultural Sciences, the situation of dyeing pitaya has not been found. If citizens suspect that the red pitaya they bought is artificially dyed, they can send it to the Agricultural Research Institute for inspection.
Dietotherapy value of pitaya;
Pitaya not only tastes sweet, but also has high nutritional value. Combine the strengths of fruits, buds, vegetables and medicines. It is not only rich in nutrition, unique in function, but also less in pests and diseases, and can grow normally without using any pesticides. Therefore, pitaya is a kind of green and environment-friendly fruit, and it is also a kind of health-care and nutritious food with certain curative effect. Every100g of pitaya pulp contains 83.75g of water, 0.34g of ash, 0.017g of crude fat, C5.22g of crude protein, 0.21g of crude fiber and 0/3 of carbohydrate. Calcium 6.3-8.8 mg, phosphorus 30.2-36. 1 mg, iron 0.55-0.65 mg, a large number of anthocyanins (the most abundant variety in red fruits), water-soluble dietary protein, plant albumin, etc.
Pitaya is sweet, and its main nutrients are protein, dietary fiber, vitamin B2, vitamin B3, vitamin C, iron, phosphorus, calcium, magnesium and potassium. It is rich in pulp fiber, carotene, vitamins B 1, B2, B3, B 12, C and so on. Kernel (the seed of black sesame) is rich in minerals such as calcium, phosphorus and iron, various enzymes, albumin, fiber and high concentration of natural pigment anthocyanin (especially red meat), and flowers, stems and buds are more similar.
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