Although canned fish is a typical canneries processed food and a large
amount of it is consumed, little research has been conducted on the r
elationship between foodstuffs and mutagens derived from over-heated f
ish muscle during the sterilization in the canning process. We prepare
d canned sardines on the basis of several different recipes to establi
sh a safe manufacturing procedure. Mutagenic fractions were extracted
with Blue rayon and their activity was determined by microsuspension a
ssay. Production of mutagenic compounds was detected through the inter
action of sugar and amino acids in a Miso (fermented soy bean paste) s
easoning mixture with the components of fish muscle. The results of th
is study suggested the possibility of reducing the amount of mutagens
by adjusting the amount of key ingredients in the recipe for Miso seas
oning mixture.