Red Group
It includes tomatoes, red bell pepper, red grapes, watermelon, guava, grapefruit, radish, and berries such as strawberries, raspberries, cranberries, cherries, etc. The main compounds that give red fruits are lycopene and flavonoids. Lycopene is good in that it contributes to the destruction of existing cancer cells and prevents the emergence of new, which helps in the fight against cancer. Furthermore, it is not destroyed by heat treatment, which allows to use such products in boiled or steamed. Flavonoids in fruits red group of vegetables and fruits, also contribute to the fight against cancer, as well as beneficial effects on the heart, vision and memory.
Green Group
By green group includes asparagus, spinach, lettuce, cucumbers, broccoli, green beans, green onions, dill, parsley, zucchini, peas, etc. Green gives them a pigment called chlorophyll. Furthermore, they contain lutein, beta-carotene, folic acid, calcium, and iron. Regular use of products containing these substances is the prevention of eye diseases, as well as helping in the fight against cancer and useful for the human immune system and thyroid gland.
Blue or purple color group
This group includes the purple cabbage, purple onion, eggplant, blackberries, blueberries, blue grapes, plums, ternosliv, prunes, black currants. The characteristic color of the fruit so give substance anthocyanins, which are good for the heart, reduces the risk of stroke, improve memory and coordination, so it is very useful for the elderly.
Yellow or orange band
This group includes oranges, apricots, carrots, sea buckthorn, mango, pineapple, peaches, swede, yellow peppers, pumpkin. Yellow vegetables and fruits in this group gives beta-carotene, which is able to be converted into vitamin A, useful for the skin, eyes, improves the functioning of the gastrointestinal tract and urinary tract, and improves the condition of the respiratory system and hinders the development of lung cancer.