Year: 2002
Type: article
Abstract: It was examined for the living fish taken much more oxygen (O2) in the blood before killing by the air press treatment (APT) in the underwater to promote the aerobic metabolism for delaying the rigor mortis of fish body after death. In the cases of eel, tilapia and horse mackerel, the O2 was taken so much as 2.6, 1.1 and 3.3mL/mL in the blood of vine by the APT, which was operated at the absolute pressure of 4.5 kgf/cm2 (ata) for 50min. Namely, the O2 was 1.3 times as much as that of the each control without APT at 1.0 atmosphere (atm). After the APT, the each fish was killed immediately and stored at 5°C. As the results, the APT prolonged the each full rigor-mortis achievement-time (FRA) of eel, tilapia and horse mackerel for 23.0h, 6.0h and 12.5h more than that of the each control, respectively. And their each FRA became 78.0h, 12.5h and 24.0h, respectively. Also, their initial contents of ATP increased to 6.9, 4.1 and 12.6 μ mol/g as much as 1.4 times of the each control. Therefore, these results suggested that the APT of fish before killing promoted the recovery of ATP and delayed the rigor mortis.
Source: Fisheries Science
Authors: MAKOTO NAGAI, JO SHINDO, HIDEMASA MIKI
Institutions: Kagoshima University, Meijo University
Language: English
Subfield: Animal Science and Zoology
Domain: Life Sciences
Open Access status: bronze
OpenAlex ID: W569100294