[Development of a Simple Identification Method for Omphalotus guepiniformis by Color Reaction].

A simple method of identification using a color reaction was developed for Omphalotus guepiniformis. Only Omphalotus guepiniformis turned turquoise green. Other edible mushrooms resembling the mushroom did not change color when the beam reagent (5 w/v% potassium hydroxide ethanolic solution) was dripped onto the mushroom pileus. Furthermore, ethanol extract and mock cooking products of this mushroom exhibited the same color reaction. These results demonstrate this method as useful for identifying Omphalotus guepiniformis during mushroom hunting or during investigations of food poisoning.