Purple sweet potatoes, also known as exotic sweet potatoes, are a unique variety that combines nutrition, health benefits, and medicinal value. With a rich array of nutrients, including dietary fiber, they offer strong health support and are loved by consumers for their delicious, fragrant, and flavorful taste.
Often referred to as black potatoes or purple potato meat, these tubers stand out from regular sweet potatoes due to their high content of selenium and anthocyanins. This makes them not only nutritious but also highly valuable in the food and health industries. Their ability to fight cancer is stronger than common sweet potatoes, which has led to growing demand both domestically and internationally.
Purple sweet potatoes are also used to extract natural anthocyanins, which are widely applied in the food processing industry. This gives them great market potential and makes them an attractive crop for farmers and manufacturers alike.
Nutritional value of purple sweet potatoes:
These tubers are packed with essential nutrients and have powerful health benefits. They were recently ranked among the top anti-cancer vegetables by the National Vegetable Cancer Research Center in Japan. They contain approximately 20% protein, including 18 amino acids, making them easy for the body to absorb. They also provide 8 vitamins such as vitamin C, B, and A, along with 10 minerals like phosphorus and iron. More importantly, they are rich in anthocyanins—substances with unique medicinal properties.
According to "Health Research," French scientist Dr. Masiquele discovered that anthocyanins are powerful natural antioxidants and even received a U.S. patent (No. 4,698,360). Scientists worldwide have confirmed that anthocyanins can help prevent and treat over 100 diseases, earning them the title of the seventh essential nutrient after water, proteins, fats, carbohydrates, vitamins, and minerals.
Anthocyanins are considered the most effective, safe, and direct free radical scavengers found in scientific research. Their ability to neutralize free radicals is 20 times greater than vitamin C and 50 times that of vitamin E. With a small molecular structure, they can cross the blood-brain barrier to protect brain cells and reduce some harmful effects of antibiotics on the human body. As a result, purple sweet potatoes are becoming a key source of anthocyanins.
Economic value of purple sweet potatoes:
Beyond their vibrant color, purple sweet potatoes are highly nutritious and rich in anthocyanins, making them ideal for use in medical nutrition products. They can be processed into frozen fries, chips, puffed snacks, dehydrated products, baked goods, and more. They can also be eaten fresh, offering a sweet and crisp texture. With rising consumer interest, purple sweet potatoes are quickly gaining popularity in both domestic and international markets.
Large and mid-sized hotels now consider them a premium health food option for middle- to high-income consumers and older adults.
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