Asthenopia is a kind of syndrome, which is produced by the interaction of eye or systemic factors and mental and psychological factors. Alleviating visual fatigue is an important health function of health food. A variety of raw materials and functional ingredients have the activity of protecting eyesight.
Lutein
Marigold flowers have become the main source of lutein for human consumption. Both lutein ester and free lutein can be raw materials of health food. The known mechanisms by which lutein protects eye health include:
1. Lutein can absorb blue-violet light, which can make the retina of the eyes resist the damage of blue light and ultraviolet rays.
2. For the eyes, lutein is an important antioxidant that quenches free radicals in multiple structures.
3. Supplement macular pigment, prevent and treat macular degeneration.
Cowberry
The main functional components of cowberry fruit for relieving visual fatigue are anthocyanins and their glycosides. Anthocyanins are generally hydrolyzed into free anthocyanins in the human digestive tract and enter the serum.
The known mechanism of anthocyanins to relieve visual fatigue is anti-oxidation. Anthocyanins have no electrons that can be paired, and can effectively scavenge different oxygen free radicals to increase the number of free radicals absorbed. This protects the cells from damage by peroxides, thereby exerting their antioxidant activity. This is why anthocyanins are able to produce antioxidant activity.
Other Ingredients
Zeaxanthin can effectively alleviate the apoptosis of retinal pigment epithelial cells induced by oxidative stress.
The important metal ion to maintain VA metabolism is the trace element zinc. Zinc can participate in the biosynthesis of retinal binding protein and the conversion of VA alcohol to VA aldehyde, and maintain the function of retinal rod cells.
The main function of vitamin C is to reduce the damage of light and oxygen to the lens of the eye and to protect the lens of the eye.
Summary
Alleviating visual fatigue is an important function in health food, which is related to the eye health of consumers. The development of products with the function of relieving visual fatigue is the demand of the health food industry. The quality of raw materials is the basis for research and development of health food. From the effectiveness, safety and quality controllability of raw materials, QYherb provides high-quality functional ingredients for health food products.