Previtamin D2, vitamin D2, and vitamin D4 amounts in different mushroom species irradiated with ultraviolet (UV) light and occurrence of structurally related photoproducts
Katrin Sommer,
Marissa Hillinger,
Walter Vetter
Abstract:Mushrooms are rich in ergosterol and ergosta‐5,7‐dienol, which can be partly converted into vitamin D2 and D4 through ultraviolet (UV) light exposure. Typically, mushrooms have very low vitamin D contents, but it can be increased by UV irradiation. This process generates additional photoisomers scarcely studied in mushrooms due to analytical challenges. Here, we developed a new solid phase extraction (SPE) method to separate vitamin D2, vitamin D4, and other tri‐ and pentacyclic photoisomers from the much high… Show more
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