- What is astaxanthin?
Astaxanthin, also known as astaxanthin and astaxanthin, is a carotenoid derivative. Its chemical formula is C40H52O4. Its molecular structure contains 11 conjugated double bonds, 2 β-ionone rings and hydroxyl groups.
- Why does astaxanthin have antioxidant capacity?
Astaxanthin is a highly unsaturated terpene compound. It is composed of a long carbon chain of conjugated double bonds composed of 4 isoprene units and 2 six-membered α-hydroxyketone rings at both ends. The molecular structure is similar to β -Carotene is similar.
There are isoprene conjugated double bonds in the molecular structure of astaxanthin, and it has strong light absorption properties within 400～500 nm.
Astaxanthin not only has a long conjugated unsaturated double bond system similar to other carotenoids, but also has an unsaturated ketone group and a hydroxyl group at the end of the conjugated double bond long chain. These structures make Astaxanthin has a relatively active electronic effect, which can easily react with free radicals, scavenging free radicals and exerting anti-oxidant effects.
Among the common carotenoids, astaxanthin has the strongest antioxidant activity, and its free radical scavenging ability is more than 10 times that of other carotenoids such as lutein, β-carotene and canthaxanthin.
- What are the types of structure of astaxanthin?
Astaxanthin has three optical isomers, five geometric isomers, and different optical forms have different antioxidant capabilities. There are three types of astaxanthin currently available on the market:
- L-Astaxanthin: The strongest antioxidant effect.
- D-Astaxanthin: Only 40% of the effect of L-Astaxanthin.
- Meso astaxanthin: lower antioxidant effect.
When choosing astaxanthin, the antioxidant capacity and dosage are not necessarily proportional. For example, if Haematococcus pluvialis powder is used as a raw material, its antioxidant effect is weak, and its antioxidant effect in the body will be significantly different.
- What are the sources of astaxanthin?
Shrimp and crab source (food chain): low content, low purity;
Fungi and yeast (microbial fermentation): gene-induced mutations can only be used in animal feed;
Chemical synthesis: Same components and different structures, only used for ornamental fish;
Source of krill oil: low content (<0.01%);
Haematococcus pluvialis (pure plant source): The richest source in nature, the highest content of astaxanthin, and the safest source in nature.