2, pineapple, rich in nutrition, its components include sugar, protein, fat, vitamin A, protein catabolic enzyme, calcium, phosphorus, iron, organic acids, nicotinic acid, etc., especially with the highest content of vitamin C, sweet, slightly sour, slightly cold, with the effects of clearing away heat and relieving summer heat, promoting fluid production and quenching thirst. In fruit juice, there is also an enzyme similar to gastric juice, which can help digestion.