Disinfectant action of Cymbopogon sp. essential oils in different phases of biofilm formation by Listeria monocytogenes on stainless steel surface |
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| Affiliation: | 1. Departamento de Ciência dos Alimentos, Universidade Federal de Lavras (UFLA), Lavras, MG, CEP 37200-000, CP 3037, Brazil;2. Departamento de Química, UFLA, Lavras, MG, CEP 37200-000, CP 3037, Brazil;3. Departamento de Fitopatologia, UFLA, Lavras, MG, CEP 37200-000, CP 3037, Brazil |
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| Abstract: | Disinfectant solutions based on the essential oils of Cymbopogon citratus (D.C.) Stapf. and Cymbopogon nardus (L.) Rendle, applied alone or in combination, and a control disinfectant solution were tested in two phases (3 and 240 h) of biofilm formation by Listeria monocytogenes ATCC 19117 on AISI 304 (#4) stainless steel surface. Disinfectant solutions based on essential oils have effectively reduced the number of surface-adhered cells, especially after 60 min of contact. The disinfectant solutions based on a combination of essential oils were capable of reducing 100% (5.64 Log CFU cm−2) the number of surface-adhered cells after 60 min of contact, at 240 h of biofilm formation. Essential oils of C. citratus and C. nardus, alone or in combination, are new alternatives for disinfection of industrial stainless steel surfaces contaminated by L. monocytogenes. |
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