Artículos de revistas
Performance of a chromogenic medium for the isolation of Listeria monocytogenes in food
Fecha
2008Registro en:
FOOD CONTROL, v.19, n.5, p.483-486, 2008
0956-7135
10.1016/j.foodcont.2007.05.013
Autor
ARAGON-ALEGRO, Lina Casale
ARAGON, Davi Casale
MARTINEZ, Edson Zangiacorni
LANDGRAF, Mariza
FRANCO, Bernadette Dora Gombossy de Melo
DESTRO, Maria Teresa
Institución
Resumen
According to the producers, CHROMagar (TM) Listeria medium comes to facilitate the detection, differentiating Listeria monocytogenes from the other species, directly on the isolation process, allowing final results in 72 h, while the traditional method takes up to 10 days. A total of 120 food samples of sliced cooked ham, ground beef and frankfurters was analyzed. From 151 colonies presenting typical L. monocytogenes characteristics on CHROMagar (TM) Listeria (bluish, surrounded by a white halo), only 95 (62.9%) were confirmed as L. monocytogenes. The medium was highly sensitive to detect L. monocytogenes in ground beef and frankfurter, but not in sliced ham. (c) 2007 Elsevier Ltd. All rights reserved.