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J Food Prot

Title:		Essential Oil Emulsions as Postharvest Sanitizers To Mitigate Salmonella Cross-Contamination on Peppers
Author(s):		Dunn LL; Harness ML; Smith DM; Gorman SJ; Zhong Q; Davidson PM; Critzer FJ;
Address:		"1 Department of Food Science, University of Tennessee, Knoxville, Tennessee 37996. 2 Department of Food Science and Technology, University of Georgia, Athens, Georgia 30602. 3 School of Food Science and Irrigated Agriculture Research and Extension Center, Washington State University, Prosser, Washington 99350, USA"
Journal Title:		J Food Prot
Year:		2019
Volume:		82
Issue:		1
Page Number:		159 - 163
DOI:		10.4315/0362-028X.JFP-18-190
ISSN/ISBN:		1944-9097 (Electronic) 0362-028X (Linking)
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 antimicrobial efficacy of the essential oil emulsions in the presence of OL indicates these emulsions may be suitable replacements for chlorine in postharvest produce wash systems"
Keywords:		"Capsicum/*microbiology Chlorine Colony Count, Microbial *Disinfectants/pharmacology Emulsions Food Contamination/*prevention & control Food Handling Food Microbiology Humans *Oils, Volatile/pharmacology Salmonella/*drug effects/growth & development Cross-;"
Notes:		"MedlineDunn, L L Harness, M L Smith, D M Gorman, S J Zhong, Q Davidson, P M Critzer, F J eng Research Support, U.S. Gov't, Non-P.H.S. 2019/02/01 J Food Prot. 2019 Jan; 82(1):159-163. doi: 10.4315/0362-028X.JFP-18-190"