CRTISO, a carotenoid isomerase, is needed to convert the cis-lycopene into an all-trans lycopene in the presence of reduced FAD. This all-trans lycopene is cyclized; cyclization gives rise to carotenoid diversity, which can be distinguished based on the end groups.

2018年9月18日 · Carotenoids are antioxidants, lowering inflammation in the body. Though it’s still being researched, carotenoid anti-inflammatory properties have been associated with improving cardiovascular ...

类胡萝卜素( carotenoids)是一类重要的 天然色素 的总称, 普遍存在于动物、 高等植物 、 真菌 、 藻类 的黄色、橙红色或红色的 色素 之中。 类胡萝卜素是体内 维生素A 的主要来源, 同时还具有抗氧化、免疫调节、抗癌、延缓衰老等功效。

Carotenoid, any of a group of nonnitrogenous yellow, orange, or red pigments that are almost universally distributed in living things. There are two major types: the hydrocarbon class, or carotenes, and the oxygenated (alcoholic) class, or xanthophylls.

Although the results of observational studies suggest that diets high in carotenoid-rich fruit and vegetables are associated with reduced risks of cardiovascular disease and some cancers, high-dose β-carotene supplements did not reduce the risk of cardiovascular disease or cancer in large randomized controlled trials.

Recently, the beneficial effects of carotenoid‐rich vegetables and fruits in health and in decreasing the risk of certain diseases has been attributed to the major carotenoids, β‐carotene, lycopene, lutein, zeaxanthin, crocin (/crocetin) and curcumin, due to their antioxidant effects.

Carotenoid is an isoprenoid polyene consisting of eight units of isoprene (C5). Based on their structure, carotenoids are divided into carotenes and xanthophylls. Carotenoids are bound to peptides resulting in the formation of pigment–protein complexes in the thylakoid membrane.

Carotenoid biosynthetic pathways by horizontal transfer genes from fungi and symbiotic bacteria in aphid and whitefly. Stick insects change their body color from green to red for camouflage in autumn. In summer, stick insects accumulate chlorophyll and β-carotene from dietary green leaves and show a green body color.

Carotenoid Discovery. Carotenoids are a group of red, orange, and yellow pigmented molecules that are synthesized by photosynthetic plants, algae, bacteria, and fungi but not animals. The discovery of carotenoids can be attributed to Heinrich Wilhelm Ferdinand Wackenroder who, in his 1831 publication, described a method where he pressed carrots ...

Of the factors that affect carotenoid bioavailability, the food matrix effects on carotenoid absorption are generally the most critical. The absorption of β-carotene supplements that are solubilized with emulsifiers and protected by antioxidants can be 70 percent or more.