Lutein, also known as plant lutein, is a kind of carotene. Its chemical formula is C40H56O2. It widely exists in vegetables, fruits, flowers and other plants. Its chemical formula contains two ketone rings. It is the main pigment in the macular region of human retina.
Source
Lutein has a wide range of food sources. It often exists together with zeaxanthin in nature. It is the main component of plant pigments such as corn, vegetables, fruits and flowers. Lutein is abundant in orange fruits and vegetables such as papaya, pumpkin, citrus, medlar and peach, but the most abundant ingredients are green leafed vegetables, such as kale, spinach, leek, Chinese cabbage, celery leaves, coriander, etc.
Function
Visual protection
Lutein is a fat soluble vitamin. Its absorption spectrum contains near blue violet light, which can help the retina of the eye resist ultraviolet light. Lutein is an important Antioxidant for the eyes. Adding a large amount of lutein to the human body helps to maintain the visual endurance, improve the visual response time and reduce visual damage. For myopia, lutein supplementation can delay the increase of myopia.
Pigmentation Action
Lutein is widely used in condiments, tobacco, cakes, candy and a variety of feed processing. Lutein has been widely used as a colorant in China.
Antioxidation
Oxygen free radical in human body is an important cause of many age-related diseases. Lutein has strong antioxidant ability, can inhibit the activity of oxygen free radical and prevent the damage of oxygen free radical to normal cells.
Anticancer Effect
Lutein has unique biological effects in inhibiting tumor growth. Its mechanism mainly includes antioxidant activity, inhibiting tumor angiogenesis and cell proliferation.
Effect of delaying early arteriosclerosis
According to the latest research results, lutein can slow down the development of early arteriosclerosis. Animal tests showed that the incidence rate of arterial thrombosis was lower than that of lutein feed, when mixed with lutein and feed from mice.
Prevention of diabetes
Lutein can be used as an effective adjuvant to enhance the hypoglycemic function of insulin. So eating foods rich in lutein and vegetables and fruits can reduce the risk of diabetes.
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