EXAMINATION OF VITAMIN D2 CHANGE OF Agaricus bisporus AND Pleurotus ostreatus UNDER THE (UV) B RADIATION

Abstract

Vitamins D are steroid-type vitamins that are soluble in fat, which is naturally found in food, and is responsible for increasing intestinal absorption of minerals such as calcium, magnesium and phosphate.Vitamin D is most commonly found in fatty fish such as salmon, tuna and mackerel, in small quantities in cattle liver, cheese and egg whites.However, it is difficult to obtain enough vitamin D from only natural foods.For this reason, it may be necessary for many people to consume vitamin D-supplemented foods.Some mushrooms contain ergosterol, a variable source of vitamin D2.These substances turn into ergocalciferol (vitamin D2) when exposed to ultraviolet light under controlled conditions. In this study, ultraviolet (UV) B radiation of 290-320 nanometer wavelength was applied to cultured fungi of Agricus bisporus and Pleurotus ostreatus containing ergosterol (provitamin D2) for 90 seconds to investigate the changes in vitamin D2 concentrations.For the UV radiation application, a prototype device previously designed by Elit Engineering firm was used.Vitamin D2 values of cultured fungi of Agricus bisporus and Pleurotus ostreatus were found to be 137 μg / 100 g and 927 μg / 100 g, respectively.As a result, it has been observed that the values obtained are well above the limits set by the European Union Standards (25-50 µg/100g)