1, color:

Yellow heart sweet potato skin is yellowish, red heart sweet potato skin is red.

2, use:

Red heart steamed or baked or steamed after drying, especially sweet, especially delicious. White hearted sweet potatoes are used to extract starch.

3, taste:

Yellow heart sweet potato, high starch content, taste dry white sweet. Sweet potato of sweet potato moisture, glutinous sweet, starch content is lower.

Nutrition

Sweet potato tuber contains 60%-80% water, 10%-30% starch, about 5% sugar and a small amount of protein, oil, cellulose, hemicellulose, pectin, ash and so on.

If 2.5Kg fresh sweet potato into 0.5Kg grain calculation, its nutrient composition in addition to fat, protein, carbohydrates and other content than rice, flour, and sweet potato in the protein composition is more reasonable, the essential amino acid content is high, especially grain and cereal foods in the lack of lysine in the sweet potato in the content is high.

In addition, sweet potatoes are rich in vitamins (carotene, vitamin A, B, C, E), and its starch is also easily absorbed by the body.

1, carotene

Vitamin A has been known as "eye protection little guardian", vitamin A is transformed from carotene. Sweet potato is rich in carotene, can provide rich vitamin A, vitamin A content can be as high as 40mg/100g fresh white groundnut, carotene is absorbed by the human body, can be converted into vitamin A. Vitamin A can maintain normal visual function.

2, edible fiber

White groundnut contains fiber equivalent to 10 times the rice noodles, its texture is delicate, does not hurt the stomach, can speed up the digestive tract peristalsis, help defecation, clean up the digestive tract, shorten the food toxic substances in the intestinal tract of the retention time, reduce constipation caused by the human body's own toxicity, reduce the concentration of intestinal carcinogens, prevention of hemorrhoids and colorectal cancer.

At the same time, cellulose can absorb part of the glucose, so that the blood contains less sugar, help prevent diabetes.

3, sugar and protein binding substances

White groundnut is rich in mucus protein, which is a polysaccharide and protein mixture, the human body has a special protective effect, can maintain the digestive tract, respiratory tract, joint cavities, membrane cavities lubrication and elasticity of blood vessels, due to this substance can prevent the substance in the arterial wall of arterial sclerosis caused by the deposition.

It can prevent the atrophy of connective tissue of liver and kidneys and other organs, can slow down the aging of human organs and improve muscle immunity. White groundnut also contains glycoproteins, has a very good anti-mutagenic, lipid-lowering and immunity-enhancing effects.

4, potassium

White groundnut is high in potassium, which can alleviate the disadvantages brought about by excessive intake of salt. Potassium is also an important factor in protecting the heart. As potassium is an alkaline element, white groundnut has a pH value of 10.31, which is physiologically alkaline food and has the effect of neutralizing body fluids. Appropriate consumption of white groundnut is conducive to maintaining the acid-base balance of blood, which is beneficial to people's health, development and intellectual development.

5, anti-cancer substances

White groundnut there is a physiologically active substances called "deoxyepiandrosterone" can prevent colon and breast cancer, brain cells and endocrine glands and the vitality of the endocrine glands have a great role to play, so it can slow down the decline of intelligence and increase the body's resistance. Containing more carotene, lysine, plant fiber, dehydroepiandrosterone, can prevent intestinal cancer and breast cancer.

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