High-yield and high-starch sweet potatoes have white flesh, high rate of large potatoes, starch content as high as 24%-26%, and the maximum yield per plant can reach more than 50 kg. It is mainly used as starch raw material for the production of starch and derivatives, including whole Products such as sugar, anhydrous glucose, oligosaccharides, sorbose and sweet potato alcohol have been widely used, with considerable economic benefits and promising market prospects. Mainly in the following aspects:
1) Production of purified sweet potato starch
My country’s sweet potato purified starch has obvious cost advantages in international competition. Every year, South Korea imports sweet potato purified starch from China and produces vermicelli made from purified starch of more than 50,000 tons; domestic production of vermicelli and vermicelli all year round, the demand for high-quality purified starch products is relatively high. It needs more than 1 million tons per year. At present, the total domestic production of purified starch is less than 300,000 tons. Therefore, there is a large domestic market.
2) Production of modified sweet potato starch
Modified starch is a starch that has various uses by changing its starch structure and properties through physical, chemical or enzymatic treatment. Widely used in food, paper, textile, petroleum and other industries.
3) Production of sweet potato nutritional health starch and its products
People’s dietary concept has gradually shifted from subsistence type to nutrition type and health care type, and from the single function of food to the diversified function. For example, adding various colors of fresh vegetable juice and fruit juice to ordinary sweet potato starch can be made into colorful nutritious vermicelli, colorful nutritious vermicelli, etc.; adding chrysanthemum, Polygonum multiflorum, wolfberry, Panax notoginseng, pueraria, Tianma, Eucommia, etc. to ordinary sweet potato starch Chinese yam and other health-care Chinese medicines can be made into health-care powders with different functions.
4) Production of green packaging materials, etc.
Using sweet potato starch as the base material, it can be made into fully decomposed, non-toxic green packaging materials and agricultural films, and the fully degradable starch foaming technology is used to produce disposable leather goods. After recycling, it can be made into fertilizer or feed, and completely hydrolyzed within 60 days after disposal. . Therefore, this is a promising industry that is currently supported by environmental protection to eliminate “white pollution”.