Food Protection Trends - May/June 2019 - 225

Ellen W. Evans1 and Elizabeth C. Redmond1
ZERO2FIVE Food Industry Centre, Cardiff Metropolitan University,
Western Ave., Llandaff, Cardiff, Wales CF5 2YB

1

PEER-REVIEWED ARTICLE
Food Protection Trends, Vol 39, No. 2, p. 225-236
Copyright© 2019, International Association for Food Protection
6200 Aurora Ave., Suite 200W, Des Moines, IA 50322-2864

Laboratory Re-enactment of Storage Practices of
Older Adults to Determine Potential Implications
for Growth of Listeria monocytogenes
ABSTRACT
Older adults are particularly susceptible to listeriosis,
and many frequently consume ready-to-eat (RTE) foods
associated with Listeria monocytogenes. Consequently,
safe storage of RTE-food is essential to reduce the risks
of listeriosis. This study aimed to re-enact domestic
food-storage malpractices of older adult consumers in a
laboratory, to assess the potential impact on L. monocytogenes. Observed and self-reported data relating to
domestic food-storage malpractices included prolonged
storage of RTE foods and/or refrigeration temperatures
exceeding recommendations (> 5.0°C). Re-enactment was
performed using soft-cheese and RTE meat inoculated
with ~3.7 log CFU L. monocytogenes, stored at recommended temperatures (2.5°C) (n = 110); temperatures
exceeding recommendations (7.8°C) (n = 110), and
ambient temperature (19.5°C) (n = 55). Samples were
analyzed every 24 h for up to 21 days. Results indicated
that L. monocytogenes grew at all storage temperatures.
Average generation times indicated slower growth of
L. monocytogenes at 2.5°C (94 h t-1) than at either 7.8°C

(21.5 h t-1) or 19.5°C (11 h t-1), suggesting that prolonged
storage of RTE foods resulted in increased L. monocytogenes populations (< 7.6 log CFU/g), potentially making
such foods unsafe for consumption. Findings indicate
that storage practices contrary to consumer recommendations, which are intended to reduce the risk of foodborne
disease, increase L. monocytogenes populations, thus
increasing the potential for foodborne disease.

INTRODUCTION
Listeria monocytogenes has the ability to survive and grow
slowly at refrigeration temperatures (1, 6) and extended
storage of food may allow the pathogen to reach high
populations (8). Many ready-to-eat (RTE) food products are
associated with L. monocytogenes contamination or listeriosis
incidence. These foods often have an extended refrigerated
shelf life (41), have the ability to support the growth of the
pathogen to reach high populations (29), and require no
further processing by consumers prior to consumption (40).
Food products that have been associated with listeriosis
include RTE fish products (30, 32, 33, 69), RTE meat

*Author for correspondence: Phone: +44 (0.2920.205836; Fax: +44 0.2920.416982; Email: elevans@cardiffmet.ac.uk

May/June Food Protection Trends

225


http://www.foodprotection.org/files/food-protection-trends/may-jun-19-evans.pdf

Food Protection Trends - May/June 2019

Table of Contents for the Digital Edition of Food Protection Trends - May/June 2019

Control of Surrogate Escherichia coli Populations in Three Food Products Using Common Food Service Cooling Methods
Risk Factors for Foodborne Illness in Temporary Eating Establishments in North Carolina
Laboratory Re-enactment of Storage Practices of Older Adults to Determine Potential Implications for Growth of Listeria monocytogenes
Floridian Producers’ Concerns About the Food Safety Modernization Act
Beyond the Bio
PDG Highlight
General Interest Paper
Industry Products
Coming Events
Food Protection Trends - May/June 2019 - Cover1
Food Protection Trends - May/June 2019 - Cover2
Food Protection Trends - May/June 2019 - 193
Food Protection Trends - May/June 2019 - 194
Food Protection Trends - May/June 2019 - 195
Food Protection Trends - May/June 2019 - 196
Food Protection Trends - May/June 2019 - 197
Food Protection Trends - May/June 2019 - 198
Food Protection Trends - May/June 2019 - 199
Food Protection Trends - May/June 2019 - Control of Surrogate Escherichia coli Populations in Three Food Products Using Common Food Service Cooling Methods
Food Protection Trends - May/June 2019 - 201
Food Protection Trends - May/June 2019 - 202
Food Protection Trends - May/June 2019 - 203
Food Protection Trends - May/June 2019 - 204
Food Protection Trends - May/June 2019 - 205
Food Protection Trends - May/June 2019 - 206
Food Protection Trends - May/June 2019 - 207
Food Protection Trends - May/June 2019 - 208
Food Protection Trends - May/June 2019 - 209
Food Protection Trends - May/June 2019 - 210
Food Protection Trends - May/June 2019 - 211
Food Protection Trends - May/June 2019 - 212
Food Protection Trends - May/June 2019 - 213
Food Protection Trends - May/June 2019 - 214
Food Protection Trends - May/June 2019 - 215
Food Protection Trends - May/June 2019 - 216
Food Protection Trends - May/June 2019 - 217
Food Protection Trends - May/June 2019 - Risk Factors for Foodborne Illness in Temporary Eating Establishments in North Carolina
Food Protection Trends - May/June 2019 - 219
Food Protection Trends - May/June 2019 - 220
Food Protection Trends - May/June 2019 - 221
Food Protection Trends - May/June 2019 - 222
Food Protection Trends - May/June 2019 - 223
Food Protection Trends - May/June 2019 - 224
Food Protection Trends - May/June 2019 - Laboratory Re-enactment of Storage Practices of Older Adults to Determine Potential Implications for Growth of Listeria monocytogenes
Food Protection Trends - May/June 2019 - 226
Food Protection Trends - May/June 2019 - 227
Food Protection Trends - May/June 2019 - 228
Food Protection Trends - May/June 2019 - 229
Food Protection Trends - May/June 2019 - 230
Food Protection Trends - May/June 2019 - 231
Food Protection Trends - May/June 2019 - 232
Food Protection Trends - May/June 2019 - 233
Food Protection Trends - May/June 2019 - 234
Food Protection Trends - May/June 2019 - 235
Food Protection Trends - May/June 2019 - 236
Food Protection Trends - May/June 2019 - Floridian Producers’ Concerns About the Food Safety Modernization Act
Food Protection Trends - May/June 2019 - 238
Food Protection Trends - May/June 2019 - 239
Food Protection Trends - May/June 2019 - 240
Food Protection Trends - May/June 2019 - 241
Food Protection Trends - May/June 2019 - 242
Food Protection Trends - May/June 2019 - 243
Food Protection Trends - May/June 2019 - 244
Food Protection Trends - May/June 2019 - 245
Food Protection Trends - May/June 2019 - Beyond the Bio
Food Protection Trends - May/June 2019 - 247
Food Protection Trends - May/June 2019 - 248
Food Protection Trends - May/June 2019 - PDG Highlight
Food Protection Trends - May/June 2019 - 250
Food Protection Trends - May/June 2019 - 251
Food Protection Trends - May/June 2019 - 252
Food Protection Trends - May/June 2019 - 253
Food Protection Trends - May/June 2019 - 254
Food Protection Trends - May/June 2019 - 255
Food Protection Trends - May/June 2019 - 256
Food Protection Trends - May/June 2019 - 257
Food Protection Trends - May/June 2019 - 258
Food Protection Trends - May/June 2019 - 259
Food Protection Trends - May/June 2019 - 260
Food Protection Trends - May/June 2019 - 261
Food Protection Trends - May/June 2019 - 262
Food Protection Trends - May/June 2019 - 263
Food Protection Trends - May/June 2019 - 264
Food Protection Trends - May/June 2019 - 265
Food Protection Trends - May/June 2019 - 266
Food Protection Trends - May/June 2019 - 267
Food Protection Trends - May/June 2019 - 268
Food Protection Trends - May/June 2019 - 269
Food Protection Trends - May/June 2019 - 270
Food Protection Trends - May/June 2019 - 271
Food Protection Trends - May/June 2019 - 272
Food Protection Trends - May/June 2019 - 273
Food Protection Trends - May/June 2019 - 274
Food Protection Trends - May/June 2019 - 275
Food Protection Trends - May/June 2019 - 276
Food Protection Trends - May/June 2019 - General Interest Paper
Food Protection Trends - May/June 2019 - 278
Food Protection Trends - May/June 2019 - 279
Food Protection Trends - May/June 2019 - 280
Food Protection Trends - May/June 2019 - 281
Food Protection Trends - May/June 2019 - 282
Food Protection Trends - May/June 2019 - 283
Food Protection Trends - May/June 2019 - Industry Products
Food Protection Trends - May/June 2019 - 285
Food Protection Trends - May/June 2019 - 286
Food Protection Trends - May/June 2019 - 287
Food Protection Trends - May/June 2019 - Coming Events
Food Protection Trends - May/June 2019 - 299
Food Protection Trends - May/June 2019 - Cover4
https://www.nxtbook.com/nxtbooks/trilix/fpt_20240304
https://www.nxtbook.com/nxtbooks/trilix/fpt_20240102
https://www.nxtbook.com/nxtbooks/trilix/fpt_20231112
https://www.nxtbook.com/nxtbooks/trilix/fpt_20230910
https://www.nxtbook.com/nxtbooks/trilix/fpt_20230708
https://www.nxtbook.com/nxtbooks/trilix/fpt_20230506
https://www.nxtbook.com/nxtbooks/trilix/fpt_20230304
https://www.nxtbook.com/nxtbooks/trilix/fpt_20230102
https://www.nxtbook.com/nxtbooks/trilix/fpt_20221112
https://www.nxtbook.com/nxtbooks/trilix/fpt_20220910
https://www.nxtbook.com/nxtbooks/trilix/fpt_20220708
https://www.nxtbook.com/nxtbooks/trilix/fpt_20220506
https://www.nxtbook.com/nxtbooks/trilix/fpt_20220304
https://www.nxtbook.com/nxtbooks/trilix/fpt_20220102
https://www.nxtbook.com/nxtbooks/trilix/fpt_20211112
https://www.nxtbook.com/nxtbooks/trilix/fpt_20210910
https://www.nxtbook.com/nxtbooks/trilix/fpt_20210708
https://www.nxtbook.com/nxtbooks/trilix/fpt_20210506
https://www.nxtbook.com/nxtbooks/trilix/fpt_20210304
https://www.nxtbook.com/nxtbooks/trilix/fpt_20210102
https://www.nxtbook.com/nxtbooks/trilix/fpt_20201112
https://www.nxtbook.com/nxtbooks/trilix/fpt_20200910
https://www.nxtbook.com/nxtbooks/trilix/fpt_20200708
https://www.nxtbook.com/nxtbooks/trilix/fpt_20200506
https://www.nxtbook.com/nxtbooks/trilix/fpt_20200304
https://www.nxtbook.com/nxtbooks/trilix/fpt_20200102
https://www.nxtbook.com/nxtbooks/trilix/fpt_20191112
https://www.nxtbook.com/nxtbooks/trilix/fpt_20190910
https://www.nxtbook.com/nxtbooks/trilix/fpt_20190708
https://www.nxtbook.com/nxtbooks/trilix/fpt_20190506
https://www.nxtbook.com/nxtbooks/trilix/fpt_20190304
https://www.nxtbook.com/nxtbooks/trilix/fpt_20190102
https://www.nxtbook.com/nxtbooks/trilix/fpt_20181112
https://www.nxtbook.com/nxtbooks/trilix/fpt_20180910
https://www.nxtbook.com/nxtbooks/trilix/fpt_20180708
https://www.nxtbook.com/nxtbooks/trilix/fpt_20180506
https://www.nxtbook.com/nxtbooks/trilix/fpt_20180304
https://www.nxtbook.com/nxtbooks/trilix/fpt_20180102
https://www.nxtbook.com/nxtbooks/trilix/fpt_20171112
https://www.nxtbook.com/nxtbooks/trilix/fpt_20170910
https://www.nxtbook.com/nxtbooks/trilix/fpt_20170708
https://www.nxtbook.com/nxtbooks/trilix/fpt_20170506
https://www.nxtbook.com/nxtbooks/trilix/fpt_20170304
https://www.nxtbook.com/nxtbooks/trilix/fpt_20170102
https://www.nxtbook.com/nxtbooks/trilix/fpt_20161112
https://www.nxtbook.com/nxtbooks/trilix/fpt_20160910
https://www.nxtbook.com/nxtbooks/trilix/fpt_20160708
https://www.nxtbook.com/nxtbooks/trilix/fpt_20160506
https://www.nxtbook.com/nxtbooks/trilix/fpt_20160304
https://www.nxtbook.com/nxtbooks/trilix/fpt_20160102
https://www.nxtbook.com/nxtbooks/trilix/fpt_20151112
https://www.nxtbook.com/nxtbooks/trilix/fpt_20150910
https://www.nxtbook.com/nxtbooks/trilix/fpt_20150708
https://www.nxtbook.com/nxtbooks/trilix/fpt_20150506
https://www.nxtbook.com/nxtbooks/trilix/fpt_20150304
https://www.nxtbook.com/nxtbooks/trilix/fpt_20150102
https://www.nxtbook.com/nxtbooks/trilix/fpt_20141112
https://www.nxtbook.com/nxtbooks/trilix/fpt_20140910
https://www.nxtbook.com/nxtbooks/trilix/fpt_20140708
https://www.nxtbook.com/nxtbooks/trilix/fpt_20140506
https://www.nxtbook.com/nxtbooks/trilix/fpt_20140304
https://www.nxtbook.com/nxtbooks/trilix/fpt_20140102
https://www.nxtbook.com/nxtbooks/trilix/fpt_20131112
https://www.nxtbook.com/nxtbooks/trilix/fpt_20130910
https://www.nxtbook.com/nxtbooks/trilix/fpt_20130708
https://www.nxtbook.com/nxtbooks/trilix/fpt_20130506
https://www.nxtbook.com/nxtbooks/trilix/fpt_20130304
https://www.nxtbook.com/nxtbooks/trilix/fpt_20130102
https://www.nxtbook.com/nxtbooks/trilix/fpt_201212
https://www.nxtbook.com/nxtbooks/trilix/fpt_201211
https://www.nxtbook.com/nxtbooks/trilix/fpt_201210
https://www.nxtbook.com/nxtbooks/trilix/fpt_201209
https://www.nxtbook.com/nxtbooks/trilix/fpt_201208
https://www.nxtbook.com/nxtbooks/trilix/fpt_201207
https://www.nxtbook.com/nxtbooks/trilix/fpt_201206
https://www.nxtbook.com/nxtbooks/trilix/fpt_201205
https://www.nxtbook.com/nxtbooks/trilix/fpt_201204
https://www.nxtbook.com/nxtbooks/trilix/fpt_201203
https://www.nxtbook.com/nxtbooks/trilix/fpt_201202
https://www.nxtbook.com/nxtbooks/trilix/fpt_201201
https://www.nxtbook.com/nxtbooks/trilix/fpt_201112
https://www.nxtbook.com/nxtbooks/trilix/fpt_201111
https://www.nxtbook.com/nxtbooks/trilix/fpt_201110
https://www.nxtbook.com/nxtbooks/trilix/fpt_201109
https://www.nxtbook.com/nxtbooks/trilix/fpt_201108
https://www.nxtbook.com/nxtbooks/trilix/fpt_201107
https://www.nxtbook.com/nxtbooks/trilix/fpt_201106
https://www.nxtbook.com/nxtbooks/trilix/fpt_201105
https://www.nxtbook.com/nxtbooks/trilix/fpt_201104
https://www.nxtbook.com/nxtbooks/trilix/fpt_201103
https://www.nxtbook.com/nxtbooks/trilix/fpt_201102
https://www.nxtbook.com/nxtbooks/trilix/fpt_201101
https://www.nxtbook.com/nxtbooks/trilix/fpt_201012
https://www.nxtbook.com/nxtbooks/trilix/fpt_201011
https://www.nxtbook.com/nxtbooks/trilix/fpt_201010
https://www.nxtbook.com/nxtbooks/trilix/fpt_201009
https://www.nxtbook.com/nxtbooks/trilix/fpt_201008
https://www.nxtbook.com/nxtbooks/trilix/fpt_201007
https://www.nxtbook.com/nxtbooks/trilix/fpt_201006
https://www.nxtbook.com/nxtbooks/trilix/fpt_201005
https://www.nxtbook.com/nxtbooks/trilix/fpt_201004
https://www.nxtbook.com/nxtbooks/trilix/fpt_201003
https://www.nxtbook.com/nxtbooks/trilix/fpt_201002
https://www.nxtbook.com/nxtbooks/trilix/fpt_201001
https://www.nxtbook.com/nxtbooks/trilix/fpt_200912
https://www.nxtbook.com/nxtbooks/trilix/fpt_200911
https://www.nxtbook.com/nxtbooks/trilix/fpt_200910
https://www.nxtbook.com/nxtbooks/trilix/fpt_200909
https://www.nxtbook.com/nxtbooks/trilix/fpt_200908
https://www.nxtbook.com/nxtbooks/trilix/fpt_200907
https://www.nxtbook.com/nxtbooks/trilix/fpt_200906
https://www.nxtbook.com/nxtbooks/trilix/fpt_200905
https://www.nxtbook.com/nxtbooks/trilix/fpt_200904
https://www.nxtbook.com/nxtbooks/trilix/fpt_200903
https://www.nxtbook.com/nxtbooks/trilix/fpt_200902
https://www.nxtbook.com/nxtbooks/trilix/fpt_200901
https://www.nxtbook.com/nxtbooks/trilix/fpt_200812
https://www.nxtbook.com/nxtbooks/trilix/fpt_200811
https://www.nxtbook.com/nxtbooks/trilix/fpt_200810
https://www.nxtbook.com/nxtbooks/trilix/fpt_200809
https://www.nxtbook.com/nxtbooks/trilix/fpt_200808
https://www.nxtbook.com/nxtbooks/trilix/fpt_200807
https://www.nxtbookmedia.com