Effect of household cooking on the retention of vitamin D2 and 25-hydroxyvitamin D2 in pulse UV-irradiated, air-dried button mushrooms (Agaricus bisporus)

Vitamin D deficiency has widespread global prevalence. Fresh mushrooms exposed to ultraviolet (UV) radiation generate vitamin D2 which remains after drying. It is not clear if vitamin D2 is retained after rehydration and cooking of dried mushrooms. The aim of this study was to determine the true retention of both vitamin D2 and 25-hydroxyvitamin D2 (25(OH)D2) after cooking UV-irradiated, air-dried, then rehydrated button mushrooms (Agaricus bisporus). Mushrooms were exposed to pulsed UV radiation, then air-dried in a convection oven, fol-lowed by rehydration in warm water. Samples were cooked in three different ways: frying (5 min), baking (10 min, 200 degrees C) and boiling (20 min, 90 degrees C). Compared to rehydrated, uncooked controls, there was a high retention of D vitamers (>= 95%) after cooking. Frying and baking resulted in significantly higher vitamin D2 retention compared to boiling (p < 0.0001). UV-irradiated, dried mushrooms are a valuable source of vitamin D2 after rehydration and cooking.

Automated summary

This study aimed to determine the retention of vitamin D2 after rehydration and cooking of UV-irradiated, air-dried mushrooms. The results showed that frying and baking resulted in higher retention of vitamin D2 compared to boiling. UV-irradiated, dried mushrooms are a valuable source of vitamin D2 after rehydration and cooking.