Comparison of the disinfecting effect of sodium hypochlorite aqueous solution and surfactant on hospital kitchen hygiene using adenosine triphosphate swab testing.
PLoS One
; 16(4): e0249796, 2021.
Article
in English
| MEDLINE | ID: covidwho-1183675
ABSTRACT
The Japanese Ministry of Health requires large-scale cooking facilities to use sodium hypochlorite aqueous solution (HYP) on food preparation tools, equipment, and facilities to prevent secondary contamination. This study aimed to compare the disinfecting effect of HYP and surfactant using adenosine triphosphate (ATP) swab testing on large-scale equipment and facilities that could not be disassembled and disinfected in hospital kitchen. From May 2018 to July 2018, ATP swab tests were performed on the following six locations in the Shizuoka Cancer Centre Dietary Department Kitchen cooking counter, mobile cooking counter, refrigerator handle, conveyor belt, tap handle, and sink. Six relative light unit (RLU) measurements were taken from each location. The log10 values of the RLU measurements were evaluated by dividing the samples into two groups the control group (surfactant followed by HYP swabbing) and the HYP group (HYP swabbing only). The results showed that the RLUs (log10 values) in both the groups improved after disinfection (p<0.05), except for the RLUs (log10 values) of the mobile cooking counter, tap handle, and sink in the control group after the HYP swab. The changes in the RLU (log10 value) did not differ between the two groups for all locations of the kitchen. Hence, HYP swabbing of large-scale equipment and facilities provides the same level of disinfection as surfactants and can be as beneficial.
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Sodium Hypochlorite
/
Surface-Active Agents
/
Food Industry
/
Adenosine Triphosphate
/
Disinfection
/
Luminescent Measurements
Type of study:
Experimental Studies
/
Randomized controlled trials
Limits:
Humans
Language:
English
Journal:
PLoS One
Journal subject:
Science
/
Medicine
Year:
2021
Document Type:
Article
Affiliation country:
Journal.pone.0249796
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