Comparison between intense pulsed light and continuous ultraviolet treatment processes for enhancing the vitamin D2 content of shiitake mushroom (Lentinula edodes) powder

Abstract

Shiitake mushrooms (Lentinula edodes) are a rich source of ergosterol, which can be converted into vitamin D2, a valuable nutrient for human health. This study evaluated the enhancement of vitamin D2 in shiitake-mushroom powders using intense pulsed light (IPL). The initial vitamin D2 content of the sample was 4.18 μg/g. After IPL treatment at various processing times and lamp voltages, the maximum concentration of vitamin D2 was reached 100.82 μg/g at 1800 V for 30 min–24 times higher than the control. The IPL effectively converted ergosterol into vitamin D2 in mushroom powders, with the ultraviolet (UV) range being the most influential. At certain fluences, IPL's effect on vitamin D2 production surpassed continuous UV treatment. These findings suggest that IPL can significantly enhance vitamin D2 content in mushroom powders, presenting a promising alternative for fortifying functional foods. © 2024