Articles
Temperatures experienced by fresh-cut leafy greens during retail storage and display
Article number
1141_10
Pages
103 – 108
Language
English
Abstract
There has been limited published work in the United States on temperature profiling of fresh-cut, bagged leafy greens during their transport, retail storage, and retail display.
This study utilized temperature monitors placed in backrooms and display cases at nine supermarkets located in southern California: the Central Coast (Santa Barbara to Los Osos), Greater Los Angeles (Burbank area), and Greater Palm Desert.
Sensors were installed midway along each 8-foot display case section containing fresh-cut leafy greens.
Monitors were placed at the front and back of shelves and in the lower bin.
In storage rooms, sensors were placed 4 feet from the floor in each corner.
High and low temperature abuse occurred in retail display cases, with slightly more than 40% of the sensors indicating temperatures >7.22°C, and 17% of the sensors indicating temperatures 7.22°C more than 5% of the time, and five sensors measured continuous temperatures >7.22°C for nearly a year.
Overall, most temperature abuse of pre-cut leafy greens at the retail level occurred during backroom storage.
This study should be expanded to include major grocery chains in cities across the United States in order to verify these results.
This study utilized temperature monitors placed in backrooms and display cases at nine supermarkets located in southern California: the Central Coast (Santa Barbara to Los Osos), Greater Los Angeles (Burbank area), and Greater Palm Desert.
Sensors were installed midway along each 8-foot display case section containing fresh-cut leafy greens.
Monitors were placed at the front and back of shelves and in the lower bin.
In storage rooms, sensors were placed 4 feet from the floor in each corner.
High and low temperature abuse occurred in retail display cases, with slightly more than 40% of the sensors indicating temperatures >7.22°C, and 17% of the sensors indicating temperatures 7.22°C more than 5% of the time, and five sensors measured continuous temperatures >7.22°C for nearly a year.
Overall, most temperature abuse of pre-cut leafy greens at the retail level occurred during backroom storage.
This study should be expanded to include major grocery chains in cities across the United States in order to verify these results.
Authors
W. Brown, E. Ryser, L. Gorman, S. Steinmaus, K. Vorst
Keywords
Romaine, lettuce, supermarket, Listeria monocytogenes, Escherichia coli O157:H7, food safety, backroom
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