Growth of Escherichia coli O157:H7 and Listeria monocytogenes with prior resistance to intense pulsed light and lactic acid
Само за регистроване кориснике
2011
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Previous study showed that repetitive mild decontamination treatments with intense light pulses (ILP) and lactic acid (LA) can induce increased resistance in surviving pathogenic cells. Research has evaluated the potential of increased resistance to enhance the persistence of resistant variants of Listeria monocytogenes and Escherichia coli O157:H7 under suboptimal growth conditions. Growth of resistant variants and parental strains was determined by optical density (OD) measurements in nutrient broths with different pH values and NaCl concentration, at low temperature. The real lag phase was calculated, and results indicated that intense light pulses (ILP) resistant variants needed longer time to initiate growth compared to their parental strains, for both L monocytogenes and E. coli O157:H7 when incubated at 7 degrees C and 10 degrees C, respectively. These selected variants were of the similar resistance towards heat and low pH (no cross-tolerance). Nevertheless, lactic acid (LA) re...sistant variant of L. monocytogenes was cross-protected when exposed to low pH, but not when treated with heat.
Кључне речи:
Listeria monocytogenes / Escherichia coli O157:H7 / Inactivation / Resistance / Persistence / Intense pulsed light / Lactic acid / Heat / pHИзвор:
Food Microbiology, 2011, 28, 5, 869-872Издавач:
- Academic Press Ltd- Elsevier Science Ltd, London
Финансирање / пројекти:
- European CommissionEuropean CommissionEuropean Commission Joint Research Centre [FOOD-CT-2005-007081]
DOI: 10.1016/j.fm.2010.12.002
ISSN: 0740-0020
PubMed: 21569928
WoS: 000291137600004
Scopus: 2-s2.0-79955854663
Институција/група
Poljoprivredni fakultetTY - JOUR AU - Rajković, Andreja AU - Šmigić, Nada AU - Devlieghere, Frank PY - 2011 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/2627 AB - Previous study showed that repetitive mild decontamination treatments with intense light pulses (ILP) and lactic acid (LA) can induce increased resistance in surviving pathogenic cells. Research has evaluated the potential of increased resistance to enhance the persistence of resistant variants of Listeria monocytogenes and Escherichia coli O157:H7 under suboptimal growth conditions. Growth of resistant variants and parental strains was determined by optical density (OD) measurements in nutrient broths with different pH values and NaCl concentration, at low temperature. The real lag phase was calculated, and results indicated that intense light pulses (ILP) resistant variants needed longer time to initiate growth compared to their parental strains, for both L monocytogenes and E. coli O157:H7 when incubated at 7 degrees C and 10 degrees C, respectively. These selected variants were of the similar resistance towards heat and low pH (no cross-tolerance). Nevertheless, lactic acid (LA) resistant variant of L. monocytogenes was cross-protected when exposed to low pH, but not when treated with heat. PB - Academic Press Ltd- Elsevier Science Ltd, London T2 - Food Microbiology T1 - Growth of Escherichia coli O157:H7 and Listeria monocytogenes with prior resistance to intense pulsed light and lactic acid EP - 872 IS - 5 SP - 869 VL - 28 DO - 10.1016/j.fm.2010.12.002 ER -
@article{ author = "Rajković, Andreja and Šmigić, Nada and Devlieghere, Frank", year = "2011", abstract = "Previous study showed that repetitive mild decontamination treatments with intense light pulses (ILP) and lactic acid (LA) can induce increased resistance in surviving pathogenic cells. Research has evaluated the potential of increased resistance to enhance the persistence of resistant variants of Listeria monocytogenes and Escherichia coli O157:H7 under suboptimal growth conditions. Growth of resistant variants and parental strains was determined by optical density (OD) measurements in nutrient broths with different pH values and NaCl concentration, at low temperature. The real lag phase was calculated, and results indicated that intense light pulses (ILP) resistant variants needed longer time to initiate growth compared to their parental strains, for both L monocytogenes and E. coli O157:H7 when incubated at 7 degrees C and 10 degrees C, respectively. These selected variants were of the similar resistance towards heat and low pH (no cross-tolerance). Nevertheless, lactic acid (LA) resistant variant of L. monocytogenes was cross-protected when exposed to low pH, but not when treated with heat.", publisher = "Academic Press Ltd- Elsevier Science Ltd, London", journal = "Food Microbiology", title = "Growth of Escherichia coli O157:H7 and Listeria monocytogenes with prior resistance to intense pulsed light and lactic acid", pages = "872-869", number = "5", volume = "28", doi = "10.1016/j.fm.2010.12.002" }
Rajković, A., Šmigić, N.,& Devlieghere, F.. (2011). Growth of Escherichia coli O157:H7 and Listeria monocytogenes with prior resistance to intense pulsed light and lactic acid. in Food Microbiology Academic Press Ltd- Elsevier Science Ltd, London., 28(5), 869-872. https://doi.org/10.1016/j.fm.2010.12.002
Rajković A, Šmigić N, Devlieghere F. Growth of Escherichia coli O157:H7 and Listeria monocytogenes with prior resistance to intense pulsed light and lactic acid. in Food Microbiology. 2011;28(5):869-872. doi:10.1016/j.fm.2010.12.002 .
Rajković, Andreja, Šmigić, Nada, Devlieghere, Frank, "Growth of Escherichia coli O157:H7 and Listeria monocytogenes with prior resistance to intense pulsed light and lactic acid" in Food Microbiology, 28, no. 5 (2011):869-872, https://doi.org/10.1016/j.fm.2010.12.002 . .