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In-package inhibition of E. coli O157:H7 on bulk Romaine lettuce using cold plasma.
Food Microbiol. 2017 Aug; 65:1-6.FM

Abstract

Dielectric barrier discharge atmospheric cold plasma (DACP) treatment was evaluated for the inactivation of Escherichia coli O157:H7, surface morphology, color, carbon dioxide generation, and weight loss of bulk Romaine lettuce in a commercial plastic clamshell container. The lettuce samples were packed in a model bulk packaging configuration (three rows with either 1, 3, 5, or 7 layers) in the container and treated by DACP (42.6 kV, 10 min). DACP treatment reduced the number of E. coli O157:H7 in the leaf samples in the 1-, 3-, and 5-layer configurations by 0.4-0.8 log CFU/g lettuce, with no significant correlation to the sample location (P > 0.05). In the largest bulk stacking with 7 layers, a greater degree of reduction (1.1 log CFU/g lettuce) was observed at the top layer, but shaking the container increased the uniformity of the inhibition. DACP did not significantly change the surface morphology, color, respiration rate, or weight loss of the samples, nor did these properties differ significantly according to their location in the bulk stack. DACP treatment inhibited E. coli O157:H7 on bulk lettuce in clamshell containers in a uniform manner, without affecting the physical and biological properties and thus holds promise as a post-packaging process for fresh and fresh-cut fruits and vegetables.

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Authors+Show Affiliations

Min SC
United States Department of Agriculture, Eastern Regional Research Center, 600 Mermaid Lane, Wyndmoor, PA 19038, USA; Department of Food Science and Technology, Seoul Women's University, 621 Hwarangro, Nowon-gu, Seoul 139-774, Republic of Korea.
Roh SH
United States Department of Agriculture, Eastern Regional Research Center, 600 Mermaid Lane, Wyndmoor, PA 19038, USA; Department of Food Science and Technology, Seoul Women's University, 621 Hwarangro, Nowon-gu, Seoul 139-774, Republic of Korea.
Niemira BA
United States Department of Agriculture, Eastern Regional Research Center, 600 Mermaid Lane, Wyndmoor, PA 19038, USA. Electronic address: Brendan.Niemira@ars.usda.gov.
Boyd G
United States Department of Agriculture, Eastern Regional Research Center, 600 Mermaid Lane, Wyndmoor, PA 19038, USA.
Sites JE
United States Department of Agriculture, Eastern Regional Research Center, 600 Mermaid Lane, Wyndmoor, PA 19038, USA.
Uknalis J
United States Department of Agriculture, Eastern Regional Research Center, 600 Mermaid Lane, Wyndmoor, PA 19038, USA.
Fan X
United States Department of Agriculture, Eastern Regional Research Center, 600 Mermaid Lane, Wyndmoor, PA 19038, USA.

MeSH

Anti-Infective AgentsAtmospheric PressureColony Count, MicrobialEscherichia coli O157Food MicrobiologyFood PackagingFoodborne DiseasesHumansLettucePlant LeavesPlasma Gases

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28399991

Citation

Min, Sea C., et al. "In-package Inhibition of E. Coli O157:H7 On Bulk Romaine Lettuce Using Cold Plasma." Food Microbiology, vol. 65, 2017, pp. 1-6.
Min SC, Roh SH, Niemira BA, et al. In-package inhibition of E. coli O157:H7 on bulk Romaine lettuce using cold plasma. Food Microbiol. 2017;65:1-6.
Min, S. C., Roh, S. H., Niemira, B. A., Boyd, G., Sites, J. E., Uknalis, J., & Fan, X. (2017). In-package inhibition of E. coli O157:H7 on bulk Romaine lettuce using cold plasma. Food Microbiology, 65, 1-6. https://doi.org/10.1016/j.fm.2017.01.010
Min SC, et al. In-package Inhibition of E. Coli O157:H7 On Bulk Romaine Lettuce Using Cold Plasma. Food Microbiol. 2017;65:1-6. PubMed PMID: 28399991.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - In-package inhibition of E. coli O157:H7 on bulk Romaine lettuce using cold plasma. AU - Min,Sea C, AU - Roh,Si Hyeon, AU - Niemira,Brendan A, AU - Boyd,Glenn, AU - Sites,Joseph E, AU - Uknalis,Joseph, AU - Fan,Xuetong, Y1 - 2017/01/30/ PY - 2016/11/23/received PY - 2017/01/24/revised PY - 2017/01/24/accepted PY - 2017/4/13/entrez PY - 2017/4/13/pubmed PY - 2017/4/28/medline KW - Cold plasma KW - E. coli O157:H7 KW - Lettuce KW - Nonthermal treatment SP - 1 EP - 6 JF - Food microbiology JO - Food Microbiol VL - 65 N2 - Dielectric barrier discharge atmospheric cold plasma (DACP) treatment was evaluated for the inactivation of Escherichia coli O157:H7, surface morphology, color, carbon dioxide generation, and weight loss of bulk Romaine lettuce in a commercial plastic clamshell container. The lettuce samples were packed in a model bulk packaging configuration (three rows with either 1, 3, 5, or 7 layers) in the container and treated by DACP (42.6 kV, 10 min). DACP treatment reduced the number of E. coli O157:H7 in the leaf samples in the 1-, 3-, and 5-layer configurations by 0.4-0.8 log CFU/g lettuce, with no significant correlation to the sample location (P > 0.05). In the largest bulk stacking with 7 layers, a greater degree of reduction (1.1 log CFU/g lettuce) was observed at the top layer, but shaking the container increased the uniformity of the inhibition. DACP did not significantly change the surface morphology, color, respiration rate, or weight loss of the samples, nor did these properties differ significantly according to their location in the bulk stack. DACP treatment inhibited E. coli O157:H7 on bulk lettuce in clamshell containers in a uniform manner, without affecting the physical and biological properties and thus holds promise as a post-packaging process for fresh and fresh-cut fruits and vegetables. SN - 1095-9998 UR - https://www.unboundmedicine.com/medline/citation/28399991/In_package_inhibition_of_E__coli_O157:H7_on_bulk_Romaine_lettuce_using_cold_plasma_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0740-0020(16)30987-X DB - PRIME DP - Unbound Medicine ER -