Lutein, alias carotenoids, carotenol, plant lutein, nucleus corpus luteum, marigold and plant lutein, the English name is Lutein, the molecular formula is C40H56O2, the relative molecular weight is 568.85. Orange-yellow powder, slurried or liquid, insoluble in water, soluble in organic solvents such as hexane

Process flow:

Marigold flower petals→freeze-drying→smashing and sieving→proportionate addition of extractant THF and KOH in ethanol solution, reaction under nitrogen atmosphere at room temperature→filtration→leaching→concentration→paste→dissolved in ethanol solution (volume ratio 1: 1) Medium→Extraction solution is adjusted to pH with acetic acid → Centrifugal removal of supernatant → Lutein crude product

effect:

(1) The main pigment components of the retina: Lutein and zeaxanthin constitute the main components of vegetable pigments such as vegetables, fruits, flowers, etc., and are also the main pigments in the macular area of the human eye. Human eyes contain high amounts of lutein, which is not made by the human body and must be supplemented by the intake of lutein. If this element is absent, the eye will be blind;

(2) Protect the eyes from light damage, delay the aging of the eyes and prevent the lesions: UV rays and blue light entering the eyes in the sun will produce a lot of free radicals, leading to cataracts, macular degeneration, and even cancer. Ultraviolet light can generally be filtered by the cornea and lens, but blue light can penetrate the eyeball directly to the retina and the macula. The lutein in the macula can filter out the blue light and avoid the damage of the blue light to the eye. The outer layer of fat in the macula is particularly susceptible to oxidation by sunlight, so this area is highly susceptible to degradation;

(3) Anti-oxidation, which helps prevent cardiovascular cirrhosis, coronary heart disease and tumor diseases caused by aging of the body;

(4) Protecting vision: Lutein acts as an antioxidant and photoprotective agent to promote the regeneration of rhodopsin in retinal cells, prevent severe myopia and retinal detachment, and improve vision and protect vision. Pa(5) Relieve symptoms of visual fatigue: (obscured vision, dry eyes, eye swelling, eye pain, photophobia, etc.);rticularly suit(6) Improve the pigment density of the macula, protect the macula, and promote the development of the macula;able for students, drivers and other people to eat;

(7) pre(8) Reduce the production of drusen and prevent the occurrence of AMDvention of macular degeneration and retinitis pigmentosa;