Is purple heart sweet potato purple potato? What are the characteristics of the difference between purple potato and purple sweet potato in those places?

Purple potato has become a popular food in recent years, and stores have launched all kinds of purple potato desserts, snacks and drinks as selling points. The cultivation technology of purple potato and sweet potato is simple. Many people think that purple potato is the same as purple sweet potato. What is the difference between purple potato and purple sweet potato? What is the nutritional value of purple potato itself?

Purple potato vs purple heart sweet potato

Purple potato is a kind of sweet potato plant, called Sweet potato; in English and sweet potato in purple heart is sweet potato and yam in English. They belong to different kinds of plants.

Purple potato and purple heart sweet potato have different color categories according to different producing areas. However, judging from the naked eye, purple potatoes are generally purple inside and outside, while the outer skin of purple heart sweet potatoes is purple and brown, and the potato meat is purple with white. Purple potatoes are generally slender and have a smoother skin, while purple heart sweet potatoes are rough, short and full.

In fact, in addition to the differences in variety and appearance, there are also great differences in nutritional value between purple potato and purple heart sweet potato. Purple potato also has lower calories, sugar and starch than purple heart sweet potato. Purple sweet potatoes have about 102 kcal and 5 grams of sugar per 100 grams, while purple potatoes have 86 kcal and 4.2 grams of sugar per 100 grams. In contrast, eating purple potatoes will be lighter.

However, the biggest difference between the two is that the vitamin An of purple potato is 100 times higher than that of purple sweet potato. Dietitians recommend 700 to 900 micrograms of vitamin A per person per day, while there are already 709 micrograms of vitamin A for every 100 grams of purple potatoes, which is enough for one day.

Does purple potato change color when heated?

While purple potato is very popular, news of purple potato discoloration is reported from time to time on the Internet, which leads to questions about genetic modification and dyeing of purple potato. In fact, purple potatoes turn green, all because anthocyanins change color when they are heated, oxidized, acidic or alkaline. Purple potatoes turn green because of alkali, such as baking powder and cooked eggs turn green. So discolored purple potatoes are not spoiled and can be eaten with peace of mind.

Even if purple potatoes have many benefits, they should be eaten with restrictions. The weight of one purple potato per meal is just right. If you usually exercise less and have gastrointestinal problems, you should eat less, or eat a small amount of food. And purple potato contains oxidase, easy to produce gas, eat too much will cause abdominal distension. In addition, purple potato sugar content, eat too much can stimulate a large number of gastric acid secretion, make people feel heartburn. People with dampness blocking spleen and stomach, qi stagnation and food accumulation should eat carefully.