First, cucumber
Cucumber contains vitamin C, vitamin B group, and a lot of trace elements. From nutritional perspective, cucumber peel contains a large number of nutrients, so it should be kept. However, in order to prevent the harms on human body caused by the pesticide residues, it is better to soak cucumber in salty water for 15 to 20 minutes, and then wash it clean and eat.

Second, tomato
Tomato is rich in vitamin A, which is good for the protection of eyesight and the repairing of skin after sunburn. It is suggested not to add sugar in tomato salad; otherwise, the sweet taste may affect your appetite. What's more, people who suffer from obesity, diabetes, and high blood pressure should not eat tomato salad added with sugar.

Third, celery
Celery contains a large number of crude fiber, potassium, vitamin B2, nicotinic acid and other ingredients. During summer, the hot weather may bring too much heat in human body, causing dry stool. At the same time, water loss is very serious in hot summer, which is very likely to cause sodium and potassium imbalance. Celery can help people relax the bowel and regulate the balance between sodium and potassium. Vitamins may affect the skin, nervous system, and appetite of human body. If the body lacks vitamin B2, it is easy to cause fatigue and mouth ulcers.

Fourth, Chinese cabbage
Chinese cabbage contains high content of dietary fiber and vitamin A, which is beneficial for the eye and beauty care. However, do not eat the Chinese cabbages which have been stored for too long. In addition, people who suffer from peptic ulcer should not eat raw cabbage, in case the crude fiber will stimulate the wound surface on the gastrointestinal tract.

Fifth, eggplant
The content of in eggplant is much higher than that in other vegetables. Selenium has effect, which not only can maintain the normal function of human cells and enhance immunity, but also has anti-disease and anti-aging effect on human body. What's more, through the metabolism in human body, it may also play a role in fighting against cancer.

Sixth, dried tangerine peel
Dried tangerine peel contains volatile oil, hesperidin, vitamin B, C and other ingredients. The volatile oil contained in it has a mild stimulating effect on gastrointestinal tract. It can promote the secretion of digestive juice, so as to help digestion. What's more, it can also reduce the accumulation of fat in the abdominal region.