Mushroom vitamin D2 update – 200 to 1000 IU per 100 gram – June 2011

Vitamin D and Sterol Composition of Ten Types of Mushrooms from Retail Suppliers in the United States.

J Agric Food Chem. 2011 Jun 13.
Phillips KM, Ruggio DM, Horst RL, Minor B, Simon R, Feeney MJ, Byrdwell WC, Haytowitz DB.

Vitamin D2 (ergocalciferol) and sterols were analyzed in mushrooms sampled nationwide in the U.S. to update the USDA Nutrient Database for Standard Reference. Vitamin D2 was assayed using HPLC with [3H]-vitamin D3 internal standard and sterols by GC-FID mass spectrometric (MS) confirmation.
Vitamin D2 was

• low (0.1-0.3 µg/100g) in Agaricus bisporus (white button, crimini, portabella) and enoki,
• moderate in shiitake and oyster (0.4-0.7 µg/100g), and
• high in morel, chanterelle, maitake (5.2-28.1 µg/100g) and
• UV-treated portabella (3.4-20.9 µg/100g),

with significant variability among composites for some types.
Ergosterol (mg/100g) was highest in maitake and shiitake (79.2, 84.9) and lowest in morel and enoki (26.3, 35.5); the range was <10 mg/100g among white button composites but 12-50 among samples of other types. All mushrooms contained ergosta-5,7-dienol (22,23-dihydroergosterol) (3.53-18.0 mg/100g) and (except morel) ergosta-7-enol. Only morel contained brassicasterol (28.6 mg/100g) and campesterol (1.23-4.54 mg/100g) and no ergosta-7,22-dienol. MS was critical in distinguishing campesterol from ergosta-7,22-dienol.

PMID: 21663327

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Note: vitamin D2 appears to be not as good as D3 and does not last as long in the body

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See also VitaminDWiki

• All items in Food Sources for Vitamin D 112 items
• All items D3 vs D2 104 items
• Soup with UVB irradiated mushrooms added 8 ng to vitamin D blood levels – May 2011
• 11 titles contained Mushroom as of Jan 2022
• Vitamin D from mushrooms: a review on optimisation of the process
• Vitamin D3 Is 1.9X better than D2 – Dec 2010
• Photobiology of vitamin D in mushrooms and its bioavailability in humans – Jan 2013