Green tomatoes contain alkaloid glycosides (lobelia alkaloids) in the form of needle-like crystals, which are very stable to alkaline, but can be hydrolyzed by acid. Therefore, unripe green tomatoes eaten often feel uncomfortable, light mouth feel bitter, serious cases will be poisonous phenomenon. Especially when the green tomatoes begin to rot, its lobelia alkaloids will be destroyed. And after the green tomatoes become red, it does not contain the anemone alkaloids. So it is said that green tomatoes are poisonous.

Tomato (Tomato), also known as tomatoes, tomatoes, the ancient name of June persimmon, the joy of three yuan. Native to Peru and Mexico, initially called "wolf peach". The fruit is rich in nutrients, with a special flavor. Can be eaten raw, boiled, processed into tomato sauce, juice or whole fruit canning. Tomato is one of the most commonly cultivated fruit and vegetables in the world. The United States, the former Soviet Union (Russia), Italy and China are the main producing countries. In Europe, America's countries, China and Japan have large greenhouses, plastic greenhouses and other protective facilities cultivation. Cultivation is widespread throughout China. Cultivation area is still continuing to expand. Native to South America; China's north and south widely cultivated. Divided into large, small two kinds.

Tomatoes are also known as tomatoes. Tomato's root system is developed, wide and deep distribution, strong rooting power, the stem is also easy to produce adventitious roots, transplanting is easy, can also be propagated by cuttings. The earliest growth in South America, because of the delicate color, people are very wary of it, as "the fruit of the fox", also known as wolf peach, only for viewing, do not dare to taste, and then a painter, in the painting of tomatoes, hunger and thirst, really can not help but to eat a tomato, and from now on tomatoes have entered the table, the West is called tomato, after the introduction of China, because with our country's tomatoes, tomatoes can be used for food. After the introduction of China, because of the similarity in appearance with China's persimmons, so we call "tomato", but now it is indispensable to people's daily lives in the delicious delicacies.