Nattokinase

Nattokinase (pronounced nat-oh-KY-nase) is an enzyme (EC 3.4.21.62) extracted and purified from a Japanese food called nattō. Nattō is made from fermented soybeans and has been eaten in Japan for many years. Nattō is produced by fermentation by adding the bacterium Bacillus natto to boiled soybeans. Nattokinase is produced by the bacterium acting on the soybeans. While other soy foods contain enzymes, it is only the nattō preparation that contains the specific nattokinase enzyme.