title: Dimethylamine, trimethylamine, and biogenic amine formation in high-pressure processed semidried squid (Todarodes pacificius) during refrigerated storage.
abstract: The quality properties of semidried squid treated with high-pressure processing (HPP) were investigated during refrigerated storage. The vacuum-packed semidried squid samples were subjected to 500 MPa for 0 min (HPP-0), 5 min (HPP-5), and 10 min (HPP-10) by using a custom-made high-pressure processor and stored at a refrigerated temperature for 28 d. The populations of indigenous psychrotrophic and mesophilic bacteria were effectively reduced by approximately 1 and 2 log CFU/g at the HPP-10 treatment, respectively. Compared to the control, the bacterial counts in HPP-treated semidried squid samples were maintained at low levels throughout the storage period. The increase in the amounts of dimethylamine (DMA) and trimethylamine (TMA) was more pronounced at the unpressurized control than at the HPP treatments. The production of biogenic amines (BAs) varied with HPP treatment during refrigerated storage. Therefore, the application of HPP may provide a significant improvement in the safety and quality of semidried squid.
authors.affiliation: Medical & Bio-material Research Center and Div. of Biomaterials Engineering, Kangwon Natl. Univ., Chuncheon, Gangwon 200-701, Republic of Korea.
authors.forename: Jingyu
authors.initials: J
authors.lastname: Gou
authors.forename: Kun-Pyo
authors.initials: KP
authors.lastname: Choi
authors.forename: Xinlong
authors.initials: X
authors.lastname: He
authors.forename: Juhee
authors.initials: J
authors.lastname: Ahn
mesh_terms: D000376:Agmatine / Q000032:analysis; D000818:Animals; D001679:Biogenic Amines / Q000032:analysis*; D002103:Cadaverine / Q000032:analysis; D015169:Colony Count, Microbial; D049832:Decapodiformes / Q000737:chemistry* / Q000382:microbiology; D004123:Dimethylamines / Q000032:analysis*; D005511:Food Handling; D005519:Food Preservation / Q000379:methods*; D006090:Gram-Negative Bacteria / Q000254:growth & development / Q000302:isolation & purification; D006094:Gram-Positive Bacteria / Q000254:growth & development / Q000302:isolation & purification; D006863:Hydrogen-Ion Concentration; D006874:Hydrostatic Pressure; D008744:Methylamines / Q000032:analysis*; D050296:Microbial Viability; D011786:Quality Control; D012034:Refrigeration; D017747:Seafood / Q000032:analysis* / Q000382:microbiology; D013095:Spermidine / Q000032:analysis; D014867:Water / Q000032:analysis
chemical_list: D001679:Biogenic Amines; D004123:Dimethylamines; D008744:Methylamines; D014867:Water; D000376:Agmatine; C034516:dimethylamine; D002103:Cadaverine; C023336:trimethylamine; D013095:Spermidine