The influence of process parameters for the inactivation of Listeria monocytogenes by pulsed electric fields

被引：75
作者：
Alvarez, I [1 ]
Pagán, R [1 ]
Condón, S [1 ]
Raso, J [1 ]
机构：
[1] Univ Zaragoza, Fac Vet, Zaragoza 50013, Spain
来源：
INTERNATIONAL JOURNAL OF FOOD MICROBIOLOGY | 2003年 / 87卷 / 1-2期
关键词：
PEF; Listeria monocytogenes; field strength; specific energy; conductivity; Weibull;
D O I：
10.1016/S0168-1605(03)00056-4
中图分类号：
TS2 [食品工业];
学科分类号：
0832 ;
摘要：
The influence of the electric field strength, the treatment time, the total specific energy and the conductivity of the treatment medium on the Listeria monocytogenes inactivation by pulsed electric fields (PEF) has been investigated. L. monocytogenes inactivation increased with the field strength, treatment time and specific energy. A maximum inactivation of 4.77 log(10) cycles was observed after a treatment of 28 kV/cm, 2000 mus and 3490 kJ/kg. The lethal effect of PEF treatments on L. monocytogenes was not influenced by the conductivity of the treatment medium in a range of 2, 3 and 4 mS/cm when the total specific energy was used as a PEF control parameter. A mathematical model based on the Weibull distribution was fitted to the experimental data when the field strength (15-28 kV/cm), treatment time (0-2000 mus) and specific energy (0 - 3490 kJ/kg) were used as PEF control parameters. A linear relationship was obtained between the log(10) of the scale factor (b) and the electric field strength when the treatment time and the total specific energy were used to control the process. The total specific energy, in addition to the electric field strength and the treatment time, should be reported in order to evaluate the microbial inactivation by PEF. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：87 / 95
页数：9
相关论文
共 36 条
  • [1] Environmental factors influencing the inactivation of Listeria monocytogenes by pulsed electric fields
    Alvarez, I
    Pagán, R
    Raso, J
    Condón, S
    [J]. LETTERS IN APPLIED MICROBIOLOGY, 2002, 35 (06) : 489 - 493
  • [2] Influence of different factors on the inactivation of Salmonella senftenberg by pulsed electric fields
    Alvarez, I
    Raso, J
    Palop, A
    Sala, FJ
    [J]. INTERNATIONAL JOURNAL OF FOOD MICROBIOLOGY, 2000, 55 (1-3) : 143 - 146
  • [3] Aronsson K., 2001, Innovative Food Science and Emerging Technologies, V2, P41, DOI 10.1016/S1466-8564(01)00021-2
  • [4] Food processing by pulsed electric fields. II. Biological aspects
    Barsotti, L
    Cheftel, JC
    [J]. FOOD REVIEWS INTERNATIONAL, 1999, 15 (02) : 181 - 213
  • [5] Inactivation of Listeria innocua in liquid whole egg by pulsed electric fields and nisin
    Calderón-Miranda, ML
    Barbosa-Cánovas, GV
    Swanson, BG
    [J]. INTERNATIONAL JOURNAL OF FOOD MICROBIOLOGY, 1999, 51 (01) : 7 - 17
  • [6] Inactivation of Listeria innocua in skim milk by pulsed electric fields and nisin
    Calderón-Miranda, ML
    Barbosa-Cánovas, GV
    Swanson, BG
    [J]. INTERNATIONAL JOURNAL OF FOOD MICROBIOLOGY, 1999, 51 (01) : 19 - 30
  • [7] Molecular epidemiology of Listeria monocytogenes, isolates collected from the environment, raw meat and raw products in two poultry- and pork-processing plants
    Chasseignaux, E
    Toquin, MT
    Ragimbeau, C
    Salvat, G
    Colin, P
    Ermel, G
    [J]. JOURNAL OF APPLIED MICROBIOLOGY, 2001, 91 (05) : 888 - 899
  • [8] Influence of the incubation temperature after heat treatment upon the estimated heat resistance values of spores of Bacillus subtilis
    Condon, S
    Palop, A
    Raso, J
    Sala, FJ
    [J]. LETTERS IN APPLIED MICROBIOLOGY, 1996, 22 (02) : 149 - 152
  • [9] DAWSON RMC, 1974, PH BUFFERS DATA BIOC, P475
  • [10] Donnelly Catherine W., 1994, P215
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