Nutrition & Food

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Study

UV Light Greatly Boosts Vitamin D in Oyster Mushrooms

UV Light Greatly Boosts Vitamin D in Oyster Mushrooms

Oyster mushroom

What they found

Controlled UV exposure dramatically raised vitamin D₂ in oyster mushrooms, especially sliced and powdered ones.

Controlled UV exposure dramatically raised vitamin D₂ in oyster mushrooms, especially sliced and powdered ones.

How solid is it?

Lab dish

Lab dish

Lab – chemical analysis

Lab – chemical analysis

Evidence ladder: Lab dish → Animal → Early human → Strong human. Reviews summarize earlier research.

At a glance

Latin name

Pleurotus ostreatus

Pleurotus ostreatus

Compound

vitamin D₂; ergosterol

vitamin D₂; ergosterol

Published in

Covered in Shroom Scan

Section

GROWING & GOURMET

GROWING & GOURMET

As it ran in Shroom Scan

Vitamin D Boost

Vitamin D Boost

Controlled UV exposure dramatically increases vitamin D₂ levels in oyster mushrooms (Pleurotus ostreatus) by converting naturally occurring ergosterol into bioavailable vitamin D₂. This work shows that timing and form matter: sliced and powdered mushrooms achieved especially large gains without meaningful nutrient loss, reinforcing UV-treated mushrooms as a reliable, plant-based vitamin D source.

Controlled UV exposure dramatically increases vitamin D₂ levels in oyster mushrooms (Pleurotus ostreatus) by converting naturally occurring ergosterol into bioavailable vitamin D₂. This work shows that timing and form matter: sliced and powdered mushrooms achieved especially large gains without meaningful nutrient loss, reinforcing UV-treated mushrooms as a reliable, plant-based vitamin D source.

Gut–Liver Reset, Anti-Aging Compounds, and Plastic-Eating Fungi

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