Astaxanthin is a red ketone oxygen containing carotenoid, which is widely found in the biological world, especially in aquatic animals such as shrimp, crab and fish, and algae yeast
Menthol, a white columnar or acicular crystal, is a saturated cycloterpenoid alcohol existing in mint and mint essential oil, which can also be obtained by chemical synthesis. Menthol can relieve itching and pain
The microencapsulation method is to immobilize the enzyme in the microcapsule of the semi permeable polymer membrane. Generally, the diameter of the microcapsule is only a few to several hundred microns.
Vapor phase silica is a kind of ultra-fine powder material obtained by the hydrolysis and condensation of halosilane in a hydrogen oxygen flame at high temperature.
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