Volume 19 Part 1 Article 46: Retail Agaricus bisporus mushrooms good source of vitamin D in Australian food supply

Volume 19 Part 1 Article 46
Year 2016
Title: Retail Agaricus bisporus mushrooms good source of vitamin D in Australian food supply
Author: Glenn Cardwell

Abstract:
Vitamin D deficiency is a public health concern as one-third of adult Australians are vitamin D deficient and one million suffer osteoporosis. Previous estimates are that Australians consume 5-10% of the Adequate Intake (AI) of vitamin D. Food Standards Australia New Zealand (FSANZ) wants to increase the online database of vitamin D containing foods, at industry’s cost, to help the public choose foods high in biologically available vitamin D.

Agricultural studies show that Agaricus bisporus, the common button mushroom, exposed to ultraviolet (UV) light, generate and retain high levels of vitamin D2. Some farmers intentionally expose mushrooms to UV light post-harvest and market them as “Vitamin D Mushrooms”, as they meet the adult Adequate Intake (AI) of 10 mcg in a 100g serve (3 medium mushrooms). What is not known is the vitamin D content of regular retail mushrooms when compared to the vitamin D levels of intentionally UV-exposed mushrooms. Independent market surveys reveal that four in five Australians (83%) eat mushrooms. If regular retail mushrooms can provide more than 10% AI vitamin D, Australian consumers will benefit in cost and convenience.

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