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Comparison of the growth of Listeria monocytogenes in unirradiated and irradiated cook‐chill roast beef and gravy at refrigeration temperatures
Author(s) -
Grant Irene R.,
Nixon Carolyn R.,
Patterson Margaret F.
Publication year - 1993
Publication title -
letters in applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.698
H-Index - 110
eISSN - 1472-765X
pISSN - 0266-8254
DOI - 10.1111/j.1472-765x.1993.tb00369.x
Subject(s) - listeria monocytogenes , irradiation , refrigeration , food science , listeria , chemistry , biology , bacteria , thermodynamics , physics , genetics , nuclear physics
Specific growth rates of two strains of Listeria monocytogenes in unirradiated and irradiated (2 kGy) roast beef and gravy stored at 5° and 10°C were found to be similar. However, exponential growth of L. monocytogenes after irradiation was preceded by an extended lag period of 6–9 d at 5°C and 3–4 d at 10°C, compared with lag periods of 1–2 d and <0.1 d in unirradiated beef and gravy stored similarly.