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Characteristics and nutrition of tomatoes

Characteristics of tomatoes:

1. Tomato is a temperature-loving vegetable. Under normal conditions, the optimal temperature for assimilation is 20-25°C, and the optimal temperature for root growth is The soil temperature is 20-22℃. It likes light and is also a short-day plant. Tomatoes like water. Generally, a soil humidity of 60-80% and an air humidity of 45-50% are suitable.

2. Tomatoes do not have strict requirements on soil conditions. They grow well in fertile loam with deep soil, good drainage, and rich in organic matter. The optimum soil pH is pH 6-7.

Nutrition of tomatoes:

Tomatoes are rich in carotene, vitamin C and B vitamins. The nutritional energy of tomatoes per 100 grams is 11 kcal, 0.06 mg of vitamin B, 0.9 g of protein, 0.2 g of fat, 3.3 g of carbohydrates, 5.6 mcg of folic acid, 1.9 g of dietary fiber, 63 mcg of vitamin A, and 375 mcg of carotene.

Thiamine 0.02 mg, riboflavin 0.01 mg, niacin 0.49 mg, vitamin C 14 mg, vitamin E 0.42 mg, calcium 4 mg, phosphorus 24 mg, potassium 179 mg, sodium 9.7 mg, Iodine 2.5 micrograms, magnesium 12 mg, iron 0.2 mg, zinc 0.12 mg, copper 0.04 mg, manganese 0.06 mg.

Extended information

Taboos of tomatoes

1. Do not eat them raw. Immature tomatoes (green tomatoes) contain a large amount of special toxic substances. This special toxin is tomatine. A trace amount of tomatine does not have a great impact on the human body, but if you eat too much, it will cause poisoning. Condition.

2. It should not be eaten on an empty stomach. Gastric acid secretion increases during fasting, because certain chemicals contained in tomatoes combine with gastric acid to easily form water-insoluble lumps. Eating them often causes abdominal pain, stomach discomfort, and gastric bloating.

3. It is not suitable to heat at high temperature for a long time. Because lycopene is easily decomposed when exposed to light, heat and oxygen, it loses its health care effect. Therefore, prolonged heating at high temperatures should be avoided when cooking.

4. It is not suitable to eat with cucumber and cucumber. Cucumber contains a vitamin C-decomposing enzyme that will destroy vitamin C in other vegetables. Tomatoes are rich in vitamin C. If they are eaten together, they will not achieve the effect of supplementing nutrition.

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