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BEHAVIOR OF LISTERIA MONOCYTOGENES AND ESCHERICHIA COLI O157:H7 IN FRESH‐SLICED CACTUS‐PEAR FRUIT
Author(s) -
CORBO M. R.,
CAMPANIELLO D.,
D’AMATO D.,
BEVILACQUA A.,
SINIGAGLIA M.
Publication year - 2005
Publication title -
journal of food safety
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 43
eISSN - 1745-4565
pISSN - 0149-6085
DOI - 10.1111/j.1745-4565.2005.00570.x
Subject(s) - pear , listeria monocytogenes , cactus , modified atmosphere , escherichia coli , biology , food science , inoculation , listeria , shelf life , microbiology and biotechnology , horticulture , bacteria , biochemistry , genetics , gene
Storage experiments were conducted to follow the behavior of Listeria monocytogenes and Escherichia coli O157:H7, deliberately inoculated on fresh‐cut cactus‐pear fruits before packaging under modified and control atmosphere and stored at four different temperatures (4, 8, 12 and 20C). L. monocytogenes was able to proliferate during storage at different temperature both in control and modified atmosphere. By comparing the sanitary‐risk values with those of shelf life, it is possible to conclude that the storage of cactus‐pear samples at temperatures greater than 4C, both in control and in modified atmospheres, could lead to a significant health‐time risk, and that this is strictly affected by temperature. E. coli O157:H7 was able to proliferate only in the sample stored at 4 and 8C in both package atmospheres. On the contrary, this species was completely suppressed at the higher temperatures. In our study, E. coli O157:H7 appeared to be much less suited for survival on the surface of the fruit than L. monocytogenes.