The fructose content of apples is the highest among fruits [1]. Plants that reproduce easily. Citrus has many functions, such as promoting fluid production to quench thirst, resolving phlegm and removing blood stasis, moistening lung and relieving cough. They all have high nutritional value and are beneficial to the growth and development of the body. Apple is one of the fruits suitable for all ages because of its high nutritional value, sweet and sour taste and rich nutrition. Its nutritional value and medical value are very high. Every 100g of fresh apple meat contains sugar 15g, protein 0.2g, fat 0. 1g, crude fiber 0. 1g, potassium 10mg and potassium 0. 165438+. Carotene 0.08mg, vitamin b 1 0.0 1mg, vitamin B2 0.0 1mg, nicotinic acid 0. 1mg, and also contains nutrients such as zinc, sorbitol, citrinin and vitamin C, which is called "the first medicine of Dafu" by more and more people. Many Americans regard apples as a necessity to lose weight, go on a diet one day a week and eat apples on this day, which is called "Apple Day". It mainly contains carbohydrates, mainly sugar.