It is understood that apples do contain formaldehyde. The formaldehyde content of apples 17.3, Chinese cabbage 4.7, fresh milk 0.027 and processed milk 0. 164 are all very low. There are standards for safe formaldehyde emission, among which E 1 environmental protection standard is the national compulsory health standard for formaldehyde emission. This formaldehyde content is acceptable to the human body and will not endanger human health.

nutritive value

1, colloid and trace element chromium in apple can keep blood sugar stable and effectively reduce cholesterol;

2. In the air pollution environment, eating more apples can improve the respiratory system and lung function, and protect the lungs from pollution and smoke;

3. Polyphenols and flavonoids contained in apples can reduce the risk of lung cancer and prevent lead poisoning;

4. Apple's unique fragrance can relieve the bad mood caused by excessive pressure, and also has a refreshing effect;

5, apples are rich in crude fiber, which can promote gastrointestinal peristalsis, help the human body to discharge waste smoothly, and reduce the harm of harmful substances to the skin;

6. Apples contain a lot of trace elements such as magnesium, sulfur, iron, copper, iodine, manganese and zinc, which can make the skin greasy, smooth, ruddy and shiny.

Edible efficacy

1, blood: Iron can only be absorbed under acidic conditions in the presence of vitamin C, so eating apples has a good preventive effect on iron deficiency anemia.

2, skin care: apples are rich in magnesium, magnesium can make the skin rosy, shiny and elastic.

3, protect the heart: apple fiber, pectin, antioxidants and so on. It can reduce bad cholesterol in the body and increase cholesterol content, so eating one or two apples a day is not easy to get heart disease.

4, apples eat raw to cure constipation, cooked to cure diarrhea: apples are rich in tannic acid, pectin, dietary fiber and other special substances. Tannic acid is an intestinal astringent, which can reduce intestinal secretion and reduce the water in stool, thus stopping diarrhea. Pectin is a "two-faced person". Unheated raw pectin has the functions of softening stool and relieving constipation, while cooked pectin has the functions of convergence and antidiarrheal. Dietary fiber also has a laxative effect.

5, Ningshen Sleeping: The elements such as phosphorus and iron contained in apples are easily absorbed by the intestinal wall, which has the effects of nourishing the brain and nourishing the blood, calming the heart and sleeping. The aroma of apples is a good medicine for depression and depression. It is found that among many smells, the aroma of apple has the greatest influence on people's psychology and has obvious effect on eliminating psychological depression.

6, whitening beauty, lowering cholesterol: the colloid and trace element chromium in apples can maintain the stability of blood sugar and effectively lower cholesterol. The crude fiber in apples can promote gastrointestinal peristalsis and is rich in trace elements such as iron and zinc, which can make the skin moist and shiny and play a role in beauty and slimming.