This explanation, however, is not logically sound considering the facts such as that cooking time for soba is extremely brief being only thirty to sixty seconds which limits the amount of the nutrients to liquate out and that rutin is water insoluble.
だが、蕎麦の茹で時間が30-60秒と極めて短く、溶け出す量は限られること、またルチンは不溶性であること等から考えると、あまり理にかなってはいない。