IEVref:845-26-080ID:
Language:enStatus: Standard
Term: vitamin D synthesis
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Definition: process whereby 7‑dehydrocholesterol, precursor of vitamin D3, produces previtamin D3 by absorbing 240 nm to 315 nm ultraviolet radiation and moreover changes it to vitamin D3 through a thermal isomerization process

Note 1 to entry: Vitamin D is a generic term for vitamin D2 and/or vitamin D3. Vitamin D synthesis in mammalian skin produces vitamin D3. Vitamin D2 is formed in plants in an analogous process when ultraviolet radiation activates ergosterol.


Publication date:2020-12
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