抄録
Recently, though seaweed is considered to be a health food, the food culture of the seaweed is unstable, and always changes. The background and the process of thoset changes were explained concerning the age against the development of the food processing of the seaweed, and the effect on the food culture was examined using the patent gazettes for this research. A food cultural change such as sea tangle, seaweed and purple laver and agar and the change in the method of manufacture are presented.