Dose鈥揜esponse Effect of Sunlight on Vitamin D2 Production in Agaricus bisporus Mushrooms

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• 作者：Paul Urbain ; Jette Jakobsen
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2015
• 出版时间：September 23, 2015
• 年：2015
• 卷：63
• 期：37
• 页码：8156-8161
• 全文大小：246K
• ISSN：1520-5118

文摘

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 渭g/g up to 3.9 卤 0.8 渭g/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/cmp>2p>, the vitamin D₂ content increased significantly to 2.2 卤 0.5 渭g/g DW (P < 0.0001), which is equivalent to 17.6 渭g (704 IU) vitamin D₂ per 100 g of fresh mushrooms and comparable to levels found in fatty fish like the Atlantic salmon.