Chemistry: analytical and immunological testing – Food or dairy products – Meat or eggs
Patent
1989-09-01
1990-12-25
Williams, Hezron E.
Chemistry: analytical and immunological testing
Food or dairy products
Meat or eggs
426231, G01N 3312
Patent
active
049802941
ABSTRACT:
A simple but precise procedure for measuring fish freshness in terms of trimethylamine (TMA) headspace concentration of a fish sample is provided based on air sampling the headspace with Carbotrap.RTM. or Tenax.RTM. sorbent tubes and subsequent thermal desorption and gas chromatographic analysis. The sampling and analysis are completed in less than five minutes. Fish freshness as determined by the TMA headspace concentration is consistent with the grading estimated by organoleptic tests, but the instrumental method provides a more objective and quantitative assessment of quality and an estimation of the post mortem age of the fish.
REFERENCES:
patent: 4080821 (1978-03-01), Johnston
patent: 4309185 (1982-01-01), Simon et al.
patent: 4650752 (1987-03-01), Ohashi et al.
patent: 4758778 (1988-07-01), Kristinsson
Elias Lorne
Krzymien Marek E.
Lemon Francis W.
National Research Council of Canada/Conseil National de Recherch
Roskos Joseph W.
Williams Hezron E.
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