No abstract

Apple is a plant of the subfamily Malus of Rosaceae, which is rich in nutrients including dietary fiber, vitamins, phenols, and other functional components, and they are an important source of phytonutrients related to health (Feng et al., 2021). According to the statistics of the Food and Agriculture Organization of the United Nations (FAO), from 2000 to 2019, the world's apple production increased from 59.13 million tons to 87.23 million tons, an increase of 47.53%.Because of a large amount of water content, perishable deterioration, and large yield, some problems such as long-distance transportation and long-term preservation are encountered. Processing fresh apples can effectively improve the economic efficiency of the apple industry and alleviate the pressure of apple storage.