“…There were four kinds of pyrazines, namely, methyl-pyrazine, 2-ethyl-5-methyl-pyrazine, trimethyl-pyrazine, and 3-ethyl-2, 5-dimethyl-pyrazine. Pyrazines are probably thermally generated via Maillard and pyrolysis reactions through Strecker degradations from various nitrogen sources such as amino acids in heat processed foods (Whitfield, 1992;Wong & Bernhard, 1988). Pyrazines coming from amino acids derivatives are responsible for spoilage and seem related with the high protein content seafood (Grosch, 1993(Grosch, , 1994.…”