LAUSR

Aroma compounds in three surimi samples, made from fresh-water Silver Carp (Hypophthalmichthys molitrix), salt-water Pacific Whiting (Merluccius productus) and Alaska Pollock (Theragra chalcogramma), were characterized by aroma extract dilution analysis, odor activity value, and odor recombination study. Results demonstrated that the most potent aroma-active compounds in the surimi were hexanal, (Z)-4-heptenal, (Z)-4-decenal, (E,Z)-2,6-nonadienal, (E,E)-2,4-nonadienal, (E,Z)-2,4-decadienal, (E,E)-2,4-decadienal, (E,E,Z)-2,4,6-nonatrienal, (E,Z,Z)-2,4,7-tridecatrienal, and (E)-4,5-epoxy-(E)-2-decenal, contributing fishy, green, oily, or metallic odors. The other aroma contributors in surimi were 1-octen-3-one, 1-octen-3-ol, dimethyl disulfide, dimethyl trisulfide, and methional. 2-Acetyl-1-pyrroline, giving a typical popcorn note, could also be an important aroma contributor due to high FD factor. Pacific Whiting surimi sample and Alaska Pollock surimi sample both had higher levels of dimethyl trisulfide and methional, whereas Silver Carp surimi sample had more (E,Z)-2,4-decadienal. In general, Silver Carp surimi sample had more aldehydes contributing stronger "river water, fishy" and "grassy, green" aromas. In contrast, salt-water surimi showed stronger "sea breeze-like" and "sulfur-like" odors.