Marigold Extract Zeaxanthin

Zeaxanthin is an oxygen-containing carotenoid. Industrially, it is mainly extracted and purified from yellow corn gluten meal, marigold petals and wolfberry via solvent extraction. As a key pigment in the human retinal macula, zeaxanthin cannot be synthesized by the human body and must be obtained from external sources. It helps filter high-energy blue light, scavenges free radicals, alleviates photo-oxidative damage to the retina, and supports macular health. It also delivers antioxidant effects to counteract oxidative stress in the body. In the marketplace, zeaxanthin is widely used in dietary supplements, often formulated together with lutein into eye-care capsules and tablets. It can also serve as a natural yellow colorant for food, beverages and baked goods, and is incorporated into certain skincare products for its antioxidant properties.

Healthkintai^® is a professional Chinese marigold extract zeaxanthin manufacturer. Our best-selling product specifications are listed in the table below. Please feel free to contact us at health@kintaibio.com to share your formulation requirements or specific specification needs.

You might be interested in our Marigold Extract Lutein

Meso-zeaxanthin is a stereoisomer of zeaxanthin. They share the identical molecular formula and both belong to the lutein-type carotenoids, and can accumulate in the macula of the human retina. Natural zeaxanthin is chiral and optically active (3R,3'R)-zeaxanthin. Meso-zeaxanthin possesses intramolecular symmetric chiral centers and exhibits no optical activity, with the (3R,3'S) configuration. While their physicochemical properties are similar, they differ markedly in stereostructure, natural sources, bioavailability and in-vivo distribution.

In the USA

In the United States, marigold-derived zeaxanthin is regulated under the GRAS system. Manufacturers may submit a notification to the FDA, which undergoes expert panel evaluation; upon receipt of the FDA's "no-questions" response, the ingredient may be marketed as a food ingredient or dietary supplement component. Marigold-sourced zeaxanthin may be used in infant foods, confectionery, cereals, dairy products, soups and beverages, with a recommended maximum serving level of 300 μg per serving. In addition, marigold extracts containing meso-zeaxanthin have also passed GRAS assessment and may be used as dietary ingredients in certain conventional foods.

In the EU

In the European Union, separate regulatory approaches are adopted for marigold extracts and synthetic zeaxanthin. For marigold-derived LMZ extracts (containing lutein, meso-zeaxanthin and zeaxanthin), the consultation decision by EU Member States concluded that they are not regarded as novel foods for use in food supplements. This is on the grounds that the production method was commonly used prior to 15 May 1997, and the source plant is included on the supplement authorisation lists of several Member States. Synthetic zeaxanthin is explicitly classified as a novel food and may only be used in food supplements with a maximum daily intake of 2 mg, to be labelled as "Zeaxanthin". Furthermore, marigold extracts rich in lutein/zeaxanthin are governed by specific authorisation regulations when used as feed additives.

Zeaxanthin, a core carotenoid component in marigold extract, primarily relies on its powerful antioxidant and light-filtering properties for its action. At the molecular level, zeaxanthin effectively quenches singlet oxygen and scavenge free radicals, reducing oxidative stress-induced cell damage. It specifically deposits in the macular region of the human retina, forming macular pigment along with lutein. By absorbing high-energy blue light, it reduces photooxidative damage to photoreceptor cells, thereby protecting visual function.Furthermore, zeaxanthin can regulate signaling pathways related to inflammation and oxidation responses and may enhance cell stability by influencing cell membrane structure and function. These synergistic mechanisms lay the nutritional foundation for its role in maintaining visual health and delaying age-related macular degeneration and other ocular degenerative diseases.

Source：https://www.mdpi.com/2076-3921/8/9/390

Zeaxanthin and lutein are two structurally similar carotenoids commonly found coexisting in plants such as marigolds, but they differ significantly in their physiological functions. Both are deposited in the macular region of the retina as protective pigments, but their distribution differs: lutein is predominantly concentrated in the periphery of the fovea (the peripheral macula), while zeaxanthin is more densely distributed in the core region of the fovea, suggesting a more direct role in protecting the most delicate visual areas.

Chemically, zeaxanthin molecules have a ketone group at each end, while lutein has hydroxyl groups at both ends. This gives zeaxanthin a stronger antioxidant capacity in quenching singlet oxygen and scavenging free radicals, especially in the central region where blue light exposure is most concentrated. Therefore, although both work synergistically and are indispensable, zeaxanthin plays a more central and efficient role in protecting the critical areas of central vision from photooxidative damage.

​​Marigold Extract Zeaxanthin for Cats/Dogs

The core benefit of marigold extract for cats and dogs is supporting eye health. Although the structure of the retina in cats and dogs differs from that in humans, research indicates that these carotenoids can accumulate in their eye tissues, helping to filter harmful blue light, support retinal function, and potentially play a positive role in delaying the development of diseases such as age-related cataracts. Furthermore, its anti-inflammatory properties also contribute to overall health.Marigold extract can be added to a dog's food.

Marigold flower extract for skin

The benefits of zeaxanthin for the skin primarily stem from its powerful antioxidant and photoprotective properties. Zeaxanthin can be selectively absorbed and accumulated by the skin, directly reducing the damage of high-energy blue light (HEV) to collagen and elastin fibers in the dermis by absorbing it, thus enhancing the skin's defense against daily light radiation. Furthermore, its anti-inflammatory properties help soothe skin sensitivity and redness. Therefore, supplementing with or applying zeaxanthin topically can synergistically maintain healthy and youthful skin from multiple dimensions, including antioxidant, anti-photodamage, and anti-inflammatory effects.

Marigold flower extract for eyes

The core benefit of zeaxanthin for the eyes lies in its specific protection of the macular region of the retina. As a major component of macular pigment, it efficiently absorbs high-energy blue light, the most harmful light to the retina, acting like natural sunglasses and directly reducing photochemical damage to photoreceptor cells. Studies have shown that adequate zeaxanthin intake is closely related to maintaining macular pigment density, improving visual contrast sensitivity, and reducing glare recovery time, making it an indispensable nutrient for maintaining central vision and long-term visual health.

Zeaxanthin Supplements

Zeaxanthin is primarily used as a core eye nutrient in health supplements, especially in lutein ester formulations, designed to supplement insufficient dietary intake. Its application strictly adheres to legally permitted raw material sources (such as marigold) and requires standardized extraction and esterification processes to ensure purity and stability. In terms of product form, soft capsules are commonly used to facilitate the absorption of fat-soluble components. To ensure efficacy, some products focus on a scientifically balanced ratio of zeaxanthin to lutein (e.g., 5:1) and emphasize the importance of taking it with oils to enhance bioavailability.

Zeaxanthin in Pharmaceuticals

The core application of zeaxanthin in the medical field lies in its role as a natural compound with clearly defined biological activity in the prevention and adjuvant treatment of ophthalmic diseases. It has also shown positive value in assisting the improvement of cataracts, diabetic retinopathy, and relieving visual fatigue. Currently, zeaxanthin is used as an active ingredient in prescription-grade ophthalmic nutritional preparations, foods for special medical purposes (FSMP), and clinical nutritional support programs, becoming an important component of comprehensive eye disease management strategies.

Zeaxanthin as a coloring agent

Zeaxanthin, as a natural food coloring agent, is primarily valued for its safety and functionality. As a natural pigment derived from marigolds, it provides bright and stable yellow to orange-red hues in food and is widely used in beverages, baked goods, confectionery, dairy products, and sauces as a substitute for potentially controversial synthetic colorings. Compared to synthetic colorings, zeaxanthin not only provides a natural color but also possesses antioxidant activity, enhancing the appearance of food while adding a health benefit, aligning with the consumer trend towards clean labels and natural, healthy products.

Astaxanthin and zeaxanthin both belong to the carotenoid family. Both possess antioxidant activity and support eye health. Astaxanthin exhibits excellent lipophilic properties and strong antioxidant capacity. It can cross the blood-retinal barrier, delivering systemic antioxidant benefits while protecting the retina. Zeaxanthin accumulates abundantly in the retinal macula. Working synergistically with lutein, it filters blue light and offers targeted protection for macular tissue, showing prominent local ocular targeted-protection advantages. Combining these two ingredients delivers synergistic benefits.

For daily dietary supplementation, the recommended daily intake of zeaxanthin for adults is generally 10-20 mg, and it works better when taken together with lutein at a comparable ratio. While dark-green and orange-yellow fruits and vegetables contain small amounts of zeaxanthin, dietary intake alone can hardly reach the effective dosage from supplements. For eye-health support, the daily dose should not exceed 30 mg. There is no clearly defined safe upper limit for long-term high-dose consumption. Pregnant women and children should follow professional medical advice and avoid self-administering high doses. As a fat-soluble compound, zeaxanthin shows markedly improved absorption when consumed with a fat-containing meal.

Zeaxanthin in marigold extract has a good safety profile at recommended doses, with rare and usually mild side effects. Studies and dietary supplementation practices have shown that, as a natural nutrient, it is well-tolerated in humans when ingested in appropriate amounts. Mild reactions are only occasionally seen at very high doses, including transient yellowing of the skin (carotenemia) or, extremely rarely, mild gastrointestinal upset.

Choosing our marigold extract zeaxanthin powder stems from our comprehensive advantages in quality, customization, and cost.

Quality assurance

We have marigold flower sources from our partner planting bases, controlling the entire supply chain from planting to extraction. We are certified by international systems such as HACCP and ISO22000, ensuring stable zeaxanthin content and compliance with international standards for solvent residue and heavy metal levels.

Flexible customization

We possess mature R&D and production lines, allowing us to flexibly adjust powder concentration, carrier formulation, particle size, and packaging according to customer needs, providing a one-stop customized solution from raw materials to finished products.

Price advantages

We have large-scale planting, cost control through in-house production, and efficient supply chain management. We can offer highly competitive prices while maintaining high quality, creating a better value-to-cost ratio for our customers. For wholesale zeaxanthin powder, please feel free to contact us at health@kintaibio.com.

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