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Essential Oil Emulsions as Postharvest Sanitizers To Mitigate Salmonella Cross-Contamination on Peppers

Published on Jan 1, 2019in Journal of Food Protection1.56
· DOI :10.4315/0362-028X.JFP-18-190
L. L. Dunn (UT: University of Tennessee), M. L. Harness (UT: University of Tennessee)+ 4 AuthorsF. J. Critzer (WSU: Washington State University)
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Abstract
ABSTRACT Alternative postharvest sanitizers to chlorine are of increasing interest for many organic growers and consumers. An emulsion of clove bud oil (CBO; 0.2 and 0.5%) or thyme oil (0.2 and 0.5%) was evaluated as a sanitizer for produce washing against a five-serovar cocktail of Salmonella on snacking peppers and compared for antimicrobial efficacy with sodium hypochlorite (200 ppm). To further evaluate these compounds, the sanitation efficacy of an emulsion was examined after the addition of 1% organic load (OL). Emulsion treatments at 0.2 and 0.5% thyme oil and 0.5% CBO were the least effected by OL and effectively reduced cross-contamination of Salmonella on clean peppers, in many cases to below the limit of detection (1 CFU/10 g; P < 0.05). Chlorine and 0.2% CBO were rendered ineffective by the addition of OL in preventing cross-contamination and performed similarly to the water control. For surface-inoculated peppers, none of the evaluated treatments performed better than a water-only wash. The a...
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#1Yue Zhang (UT: University of Tennessee)H-Index: 19
#2Qiumin Ma (UT: University of Tennessee)H-Index: 9
Last.Qixin Zhong (UT: University of Tennessee)H-Index: 31
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#1Linhan Zhang (UT: University of Tennessee)H-Index: 2
#2Faith Critzer (UT: University of Tennessee)H-Index: 11
Last.Qixin Zhong (UT: University of Tennessee)H-Index: 31
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