Dose-Response Effect of Sunlight on Vitamin D2 Production in Agaricus bisporus Mushrooms

Paul Urbain, Jette Jakobsen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The dose response effect of UV-B irradiation from sunlight on vitamin D2 content of sliced Agaricus bisporus (white button mushroom) during the process of sun-drying was investigated.Real-time UV-B and UV-A data were obtained using a high-performance spectroradiometer. During the first hour of sunlight exposure, the vitamin D2 content of the mushrooms increased in a linear manner, with concentrations increasing from 0.1 μg/g up to 3.9 ± 0.8 μg/g dry weight (DW). At the subsequent two measurements one and 3 h later, respectively, a plateau was reached. Two hours of additional exposure triggered a significant decline in vitamin D2 content. After just 15 min of sun exposure and an UV-B dose of 0.13 J/cm(2), the vitamin D2 content increased significantly to 2.2 ± 0.5 μg/g DW (P <0.0001), which is equivalent to 17.6 μg (704 IU) vitamin D2 per 100 g of fresh mushrooms and comparable to levels found in fatty fish like the Atlantic salmon.
Original languageEnglish
JournalJournal of Agricultural and Food Chemistry
Volume63
Issue number37
Pages (from-to)8156-8161
Number of pages6
ISSN0021-8561
DOIs
Publication statusPublished - 2015

Keywords

  • Agaricus bisporus
  • UV-B
  • dose−response
  • ergocalciferol
  • mushroom
  • sunlight
  • vitamin D

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