椎茸中のビタミンD_2含量に及ぼす日光照射の影響

概要

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The effects of sunlight or ultraviolet irradiation (254nm) on vitamin D_2 contents in shiitake mushroom (Lentinus edodes). The results were as follows: (1) When the samples were exposed to sunlight for 30 minutes or 60 minutes, the contents of vitamin D_2 in raw shiitake mushroom increased about 13 times or 30 times higher than the original content. (2) The contents of vitamin D_2 in dried shiitake mushroom (brand name: Donko, Koshin) after exposure to sunlight increased by about 2〜4 times higher than the original content (after 30 minutes). (3) 1. The contents of vitamin D_2 in dried shiitake (Donko, Koshin and Donko powder) increased about 2〜3 times higher than those before irradiation according to the increase of amounts of ultraviolet irradiation. 2. The contents of vitamin D_2 in Donko slice increased about 8 times higher than the original content.
東京聖栄大学の論文
1994-12-20