日本的传统食品纳豆是富含营养,并有某些治疗作用的健康食物。据传是自古由民间发明并用土法生产,逐步推广全国的。其营养和效能,主要存在于原料大豆,经过纳豆菌的作用而制成的。森下敬一会长曾指出:“首先是纳豆的成分本身极佳,所含维生素B2是大豆原来的5～6倍。经常食用纳豆, Natto, a traditional Japanese food, is a healthy, nutritious food that has some healing properties. It is rumored to have been invented by the people since ancient times and produced by indigenous methods and gradually promoted the whole country. Its nutrition and efficacy, mainly in raw soybeans, after the role of Bacillus natto made. Mori Shimin President once pointed out: "The first is the composition of natto itself excellent, vitamin B2 is the original 5 to 6 times that of soybeans.Often consumption of natto,