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The sweet potato harvest season to the drying equipment "checks" deep processing of sweet potatoes

December 31, 2019 11:14:38 Source: Food Machinery Network Editor: Lia Popularity: 11202


[Original of Food Machinery and Equipment.net.net ] Winter is the season for sweet potato harvest. It contains a large amount of sugar, protein, various vitamins and minerals, and has high nutritional value. It is widely grown in China. Sweet potatoes have been introduced to China for a long time, and there are various ways to eat them. Among them, dried sweet potatoes are very popular among Chinese residents for their simple preparation and sweet taste. Nowadays, with the development of drying technology, the production and production of dried sweet potatoes in China are gradually becoming standardized.

In the past two years, as the edible value of sweet potatoes has been further tapped, its market size has continued to expand. According to public data, the total value of the global sweet potato market in 2018 reached 203.2 billion yuan, and it is expected to grow to 234.62 billion yuan in 2025, with a compound annual growth rate of 2.2%.
China is a major producer and consumer of sweet potatoes. Although the domestic sweet potato market is fiercely competitive, through the deep processing of sweet potatoes, the added value of sweet potatoes has been enhanced, and many companies have gained a share of the fierce market competition. In particular, the deep processing of dried sweet potatoes has low production costs and a wide market space.
Traditional sweet potato processing methods are mainly based on natural drying. However, the natural drying period is long, the quality of finished products and production efficiency are greatly affected by natural factors, and food quality and safety cannot be effectively guaranteed in the natural environment. With the development of food drying technology, more and more drying equipment is used in the process of making sweet potatoes, which not only greatly improves the production efficiency and quality of the finished products, but also prevents food safety risks to a certain extent.
China entered the research and development stage of modern drying technology in the 1950s, and has now developed a variety of commonly used equipment such as air-flow drying, fluidized-bed drying, rotary flash drying, infrared drying, and microwave drying. At the same time, new technologies such as impact drying, collision flow drying, overheating drying, pulsating combustion drying, and heat pump drying have gradually matured and been implemented.
At present, heat pump drying equipment is widely used in the drying process of dried sweet potatoes. Heat pump drying refers to the use of the reverse Carnot principle, which uses a small amount of electrical energy to absorb the heat in the air for heating, thereby achieving material drying. Compared with ordinary electric heating drying, heat pump drying consumes less power and is more efficient. Compared with drying equipment with different heat sources, heat pump drying is only 30% of electric heating, 40% of oil-fired boilers, and 60% of coal-fired boilers. The economic benefits are very significant.
In the past two years, China's drying equipment production and research and development have been fast. Especially with the increase of the domesticization of drying equipment, the domestic market for drying equipment has gradually shifted from price competition to quality competition, and the technical level and performance of the equipment are stable Is becoming increasingly important. And with the continuous improvement of consumers' requirements for food quality, the requirements of manufacturers for drying equipment are also increasing.
In the future, drying equipment will need to be further developed based on today's processes. For example, the equipment is multifunctional, allowing several different heat transfer forms to be used in the same equipment, making the drying process more reasonable, further shortening the process flow, and improving the quality of the finished product. In addition, large-scale is also one of the main development directions of drying equipment in the future. Large-scale equipment can realize large-scale production, thereby improving production efficiency.
Dried sweet potatoes is a household name in our country. With the upgrading of consumption, the quality and food safety of dried sweet potatoes are receiving more and more attention from consumers. Therefore, when producing sweet potatoes, manufacturers need to use modern drying equipment such as heat pump dryers to improve production efficiency and quality and safety. For equipment manufacturers, it is also necessary to accelerate the research and development of multifunctional and large-scale drying equipment and improve the overall level of domestic drying equipment.

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