Black tomatoes are black tomatoes. It is a cultivated variety of tomato, belonging to Solanaceae and Lycopersicon. Because its fruit color is red and black, it is named black tomato. Similar to common tomato, it has developed root system and strong regeneration ability. Stem creeping, infinite growth, plant height more than 2 meters, early maturity. Fruit per ear 15-40, single fruit weight 10-30g. Immature fruits are green, and mature fruits are purple-black and red-black.

Black tomatoes are native to South America. China was introduced from the United States for the first time in 2007. According to the Huaihe-Qinling Mountains, Guangdong Baiyun, Hainan (Sanya), Fujian (Jiangle County), Hunan (Changde City), Guizhou (Qiannan qingzhen city), Zhejiang (Suichang County, Yuhuan County) and Jiangsu (Suzhou City, coastal areas) are in the south. In the north, such as Jiangsu (Xuzhou City), Gansu (Gaotai County, Sunan County), Ningxia (Helan County), Xinjiang (Shihezi City) and Heilongjiang (Mudanjiang Area), it has been introduced and cultivated. The suitable temperature for the growth of black tomato is 12-35℃.

Black tomato is a treasure of tomato family, named for its fruit color and red-black color. Its fruit has dual functions of medicine and food, rich fruit fragrance, moderate sweetness and sourness, high nutritional value, and is especially suitable for fresh food. It also contains a lot of lycopene, rich vitamin C and antioxidants, and has the functions of nourishing yin, protecting kidney, whitening and losing weight for women. It has been proved by the medical profession that eating black tomatoes often has the magical effect of nourishing yin and strengthening yang, and has a good effect on prostatitis. Canadian researchers found that black tomatoes contain more lycopene, antioxidants and vitamin C than red tomatoes, which is more reasonable in structure and easier to be absorbed by the human body. It can prevent breast cancer, cervical cancer, prostate cancer, colon cancer and heart disease, especially breast cancer. According to this study, eating black tomatoes can reduce the probability of prostate cancer and heart disease in men. Therefore, moderate consumption of fresh black tomatoes or black ketchup is beneficial to health.

Black tomato contains 17 kinds of amino acids, accounting for 5.329% of the total weight (dry sample), which is relatively high in fruits and vegetables. It contains seven essential amino acids: Threonine (thr), Phenylalanine (phe), Valine (val), lysine (Lys), isoLeucine (Ile), leucine (leu) and Methionine (met), accounting for 365438 0.23% of the total amino acids. The limiting amino acid is tryptophan (Trp). Protein, where essential amino acids account for 40% of the total amino acids, is a better quality protein. The essential amino acids in black tomato account for 3 1.23% of the total amino acids, which is incomplete in species and low in content, and is poor in providing high-quality protein.