Introduction for Marigold extract
Marigold extract lutein is present in nature with Zeaxanthin. Natural Marigold extract lutein ester is an important carotenoid fatty acid ester, its stability is better than free lutein, and the human body also absorbs it better than free lutein. The bioavailability of lutein ester in vivo The degree is 1.6 times that of Marigold extract lutein . The relevant departments of the state have approved lutein ester as a new resource food. Therefore, lutein and lutein ester can be used as new health food function factors and food additives. Lutein has a broad market. space.
Where to extract Lutein
Marigold extract lutein is widely found in green vegetables, corn and egg yolks, and is most abundant in spinach, kiwi and carrot. The study found that the content of lutein and zeaxanthin in egg yolk was the highest, reaching 85% of the total amount of carotene. The content of lutein in corn accounted for 60% of the total amount of carotene. In addition, the darker fruits and vegetables such as zucchini, kiwi and orange. , pumpkins, etc. all contain a certain amount of lutein. In recent years, marigold has been found to be rich in carotene, especially lutein. Today, marigold, corn gluten meal and algae have become the main sources of lutein extraction.
Marigold, also known as calendula, is an annual herb native to Mexico. The petals of marigold are yellow, orange and red. The introduction of marigold in our country in the 1980s has been planted in large quantities and has become the main raw material for extracting lutein. Related companies studied the content of lutein in 11 different varieties of marigold. The experiment found that the content of lutein was very different, the highest content could reach 611.0mg/100g, and the lowest content was 161.0 mg/100g. It indicates that the content of lutein in marigold is quite different. Studies have shown the antioxidant activity of lutein in marigolds of three different colors (orange, yellow and red). Studies have found that lutein in orange marigold has the highest antioxidant activity and lutein content is higher than other colors. .
Corn gluten meal, also known as corn gluten meal, is a by-product of the production of corn starch and alcohol. It is obtained by drying the protein starch obtained by the wet grinding process of corn granules and then by the starch separator. It is mainly composed of zein, contains a small amount of starch and cellulose, and more importantly, is rich in lutein, zeaxanthin, β-carotene and the like. Corn is the world's three major food crops. Every year, a large amount of corn gluten is used as feed. It is an important resource for lutein. Therefore, it has become a kind of extraction of lutein from medical protein powder through secondary processing of corn. New topic.
Extracting lutein from marigold is a very complicated project. Planting marigold not only requires a lot of land and manpower, but also the content of lutein in marigold varies greatly, and some can even reach 0.03%. How to screen high-yield lutein is a difficult problem. Therefore, from the perspective of economic benefits, marigold is not the most ideal source of lutein. Now researchers' eyes are turning to algae, because algae not only contain lutein, but also grow fast and easily multiply, which can greatly improve the efficiency of producing lutein. Lutein has been extracted from many algae, such as Muriellopsis sp, Chlorellazofingensis, and it is believed that algae will be the main source of industrial production of lutein in the near future.
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