Food Protection Trends - May/June 2020 - 151
Figure 2. Distribution of bacteria concentrations recovered
from side A and side B of TMDs by treatment type. Box
plots show bacteria concentrations at pre-treatment (A) and
post-treatment (B) by treatment type. The solid horizontal
line within the box represents the median sample values while
the box represents the interquartile range (IQR), or the 25th
and 75th percentiles. The whiskers extending from the ends
of the box represent the 1.5 × IQR, and outliers are shown as
individual points beyond the whiskers.
TABLE 2. Mean log bacteria by self-reported frequency of cleaning
Frequency of Cleaning (Response No., n = 100)
Always
Most of the time
About half the time
Sometimes
Never
1
6
14
52
27
Concentration of Bacteria [log (CFU/cm2+1)]
Mean (± SD)
1.22 (-)
0.80 (0.35)
0.80 (0.36)
0.76 (0.38)
0.79 (0.32)
SD = standard deviation.
authors reported bacterial contamination on the TMDs of
German university students (n = 60) as well as evaluating
treatment methods. However, as opposed to using each
student's TMD as its own baseline and treatment, the
authors separated the TMDs into three groups of 20:
uncleaned, cleaned with dry microfabric cloth, and
cleaned with alcohol-based (ethanol and isopropanol)
wipes. The average baseline concentration of bacteria
recovered from untreated TMDs was 0.37 log10 CFU/
cm2+1, approximately half of the baseline level (0.76 log10
CFU/cm2+1) reported in the present study. This difference
in baseline contamination could be due to differences
in TMD use habits and behaviors, but the sampling
method-contact agar plates versus swabbing-is likely to
be a major contributing factor. Although log10-reduction
values were not explicitly reported, Egert and co-authors
reported that 0.28 and 0.34 log10 (CFU/cm2+1) reductions
were achieved after treatment with microfabric cloths and
alcohol-based wipes, respectively (5). However, given
the difference in baseline concentrations between the
present study and Egert et al., these log10 reduction values
are comparable to those reported for microfiber and IA
treatment groups in the present study at 0.28 and 0.38 log10
(CFU/cm2+1), respectively.
May/June Food Protection Trends
151
Food Protection Trends - May/June 2020
Table of Contents for the Digital Edition of Food Protection Trends - May/June 2020
An Assessment of Produce Growers’ Sanitizer Knowledge and Practices on the Correct Use of Sanitizers
Prevalence and Control of Bacteria on Single-user Touchscreen Mobile Devices
Food Safety in School Foodservice Operations: A Review of Health Inspections in the State of Missouri
Engaging Undergraduate Students in Food Safety Study and Food Microbiology Research
Beyond the Bio
PDG Highlight
General Interest Paper
Coming Events
Food Protection Trends - May/June 2020 - Cover1
Food Protection Trends - May/June 2020 - Cover2
Food Protection Trends - May/June 2020 - 133
Food Protection Trends - May/June 2020 - 134
Food Protection Trends - May/June 2020 - 135
Food Protection Trends - May/June 2020 - 136
Food Protection Trends - May/June 2020 - 137
Food Protection Trends - May/June 2020 - 138
Food Protection Trends - May/June 2020 - 139
Food Protection Trends - May/June 2020 - An Assessment of Produce Growers’ Sanitizer Knowledge and Practices on the Correct Use of Sanitizers
Food Protection Trends - May/June 2020 - 141
Food Protection Trends - May/June 2020 - 142
Food Protection Trends - May/June 2020 - 143
Food Protection Trends - May/June 2020 - 144
Food Protection Trends - May/June 2020 - 145
Food Protection Trends - May/June 2020 - 146
Food Protection Trends - May/June 2020 - Prevalence and Control of Bacteria on Single-user Touchscreen Mobile Devices
Food Protection Trends - May/June 2020 - 148
Food Protection Trends - May/June 2020 - 149
Food Protection Trends - May/June 2020 - 150
Food Protection Trends - May/June 2020 - 151
Food Protection Trends - May/June 2020 - 152
Food Protection Trends - May/June 2020 - 153
Food Protection Trends - May/June 2020 - Food Safety in School Foodservice Operations: A Review of Health Inspections in the State of Missouri
Food Protection Trends - May/June 2020 - 155
Food Protection Trends - May/June 2020 - 156
Food Protection Trends - May/June 2020 - 157
Food Protection Trends - May/June 2020 - 158
Food Protection Trends - May/June 2020 - 159
Food Protection Trends - May/June 2020 - 160
Food Protection Trends - May/June 2020 - 161
Food Protection Trends - May/June 2020 - 162
Food Protection Trends - May/June 2020 - 163
Food Protection Trends - May/June 2020 - Engaging Undergraduate Students in Food Safety Study and Food Microbiology Research
Food Protection Trends - May/June 2020 - 165
Food Protection Trends - May/June 2020 - 166
Food Protection Trends - May/June 2020 - 167
Food Protection Trends - May/June 2020 - 168
Food Protection Trends - May/June 2020 - 169
Food Protection Trends - May/June 2020 - 170
Food Protection Trends - May/June 2020 - 171
Food Protection Trends - May/June 2020 - Beyond the Bio
Food Protection Trends - May/June 2020 - 173
Food Protection Trends - May/June 2020 - 174
Food Protection Trends - May/June 2020 - PDG Highlight
Food Protection Trends - May/June 2020 - 176
Food Protection Trends - May/June 2020 - 177
Food Protection Trends - May/June 2020 - 178
Food Protection Trends - May/June 2020 - 179
Food Protection Trends - May/June 2020 - 180
Food Protection Trends - May/June 2020 - 181
Food Protection Trends - May/June 2020 - 182
Food Protection Trends - May/June 2020 - 183
Food Protection Trends - May/June 2020 - 184
Food Protection Trends - May/June 2020 - 185
Food Protection Trends - May/June 2020 - 186
Food Protection Trends - May/June 2020 - 187
Food Protection Trends - May/June 2020 - 188
Food Protection Trends - May/June 2020 - 189
Food Protection Trends - May/June 2020 - 190
Food Protection Trends - May/June 2020 - 191
Food Protection Trends - May/June 2020 - 192
Food Protection Trends - May/June 2020 - 193
Food Protection Trends - May/June 2020 - 194
Food Protection Trends - May/June 2020 - 195
Food Protection Trends - May/June 2020 - 196
Food Protection Trends - May/June 2020 - 197
Food Protection Trends - May/June 2020 - 198
Food Protection Trends - May/June 2020 - 199
Food Protection Trends - May/June 2020 - 200
Food Protection Trends - May/June 2020 - 201
Food Protection Trends - May/June 2020 - 202
Food Protection Trends - May/June 2020 - 203
Food Protection Trends - May/June 2020 - General Interest Paper
Food Protection Trends - May/June 2020 - 205
Food Protection Trends - May/June 2020 - 206
Food Protection Trends - May/June 2020 - 207
Food Protection Trends - May/June 2020 - 208
Food Protection Trends - May/June 2020 - 209
Food Protection Trends - May/June 2020 - 210
Food Protection Trends - May/June 2020 - 211
Food Protection Trends - May/June 2020 - 212
Food Protection Trends - May/June 2020 - 213
Food Protection Trends - May/June 2020 - 214
Food Protection Trends - May/June 2020 - 215
Food Protection Trends - May/June 2020 - Coming Events
Food Protection Trends - May/June 2020 - Cover3
Food Protection Trends - May/June 2020 - Cover4
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