title: The efficacy of Mentha arvensis L. and M. piperita L. essential oils in reducing pathogenic bacteria and maintaining quality characteristics in cashew, guava, mango, and pineapple juices.
abstract: This study evaluated the ability of the essential oil from Mentha arvensis L. (MAEO) and M. piperita L. (MPEO) to induce ≥5-log reductions in counts (CFU/mL) of E. coli, L. monocytogenes, and Salmonella enterica serovar Enteritidis in Brain-Heart Infusion broth (BHIB) and cashew, guava, mango, and pineapple juices during refrigerated storage (4±0.5°C). The effects of the incorporation of these essential oils on some physicochemical and sensory parameters of juices were also evaluated. The incorporation of 5, 2.5, 1.25, or 0.625μL/mL of MAEO in BHIB caused a ≥5-log reduction in counts of E. coli and Salmonella Enteritidis after 24h of storage; but only 5μL/mL was able to cause the same reduction in counts of L.monocytogenes. The incorporation of 10μL/mL of MPEO in BHIB caused a ≥5-log reduction in counts of E. coli, Salmonella Enteritidis, and L. monocytogenes after 24h of storage; smaller reductions were observed in BHIB containing 5, 2.5, and 1.25μL/mL of MPEO. Similar reductions were observed when the MAEO or MPEO was incorporated at the same concentrations in mango juice. The incorporation of MAEO or MPEO at all tested concentrations in cashew, guava, and pineapple juices resulted in a ≥5-log reduction in pathogen counts within 1h. The incorporation of MAEO and MPEO (0.625 and 1.25μL/mL, respectively) in fruit juices did not induce alterations in °Brix, pH, and acidity, but negatively affected the taste, aftertaste, and overall acceptance. The use of MAEO or MPEO at low concentrations could constitute an interesting tool to achieve the required 5-log reduction of pathogenic bacteria in cashew, guava, mango, and pineapple fruit juices. However, new methods combining the use of MAEO or MPEO with other technologies are necessary to reduce their negative impacts on specific sensory properties of these juices.
authors.affiliation: Laboratory of Food Microbiology, Department of Nutrition, Health Science Center, Federal University of Paraíba, João Pessoa, Brazil.
authors.forename: Jossana Pereira
authors.initials: JP
authors.lastname: de Sousa Guedes
authors.affiliation: Laboratory of Food Microbiology, Department of Nutrition, Health Science Center, Federal University of Paraíba, João Pessoa, Brazil.
authors.forename: José Alberto
authors.initials: JA
authors.lastname: da Costa Medeiros
authors.affiliation: Laboratory of Food Microbiology, Department of Nutrition, Health Science Center, Federal University of Paraíba, João Pessoa, Brazil.
authors.forename: Richard Sidney
authors.initials: RS
authors.lastname: de Souza E Silva
authors.affiliation: Laboratory of Food Microbiology, Department of Nutrition, Health Science Center, Federal University of Paraíba, João Pessoa, Brazil.
authors.forename: Janaína Maria Batista
authors.initials: JM
authors.lastname: de Sousa
authors.affiliation: Laboratory of Food Microbiology, Department of Nutrition, Health Science Center, Federal University of Paraíba, João Pessoa, Brazil.
authors.forename: Maria Lúcia
authors.initials: ML
authors.lastname: da Conceição
authors.affiliation: Laboratory of Food Microbiology, Department of Nutrition, Health Science Center, Federal University of Paraíba, João Pessoa, Brazil. Electronic address: evandroleitesouza@ccs.ufpb.br.
authors.forename: Evandro Leite
authors.initials: EL
authors.lastname: de Souza
mesh_terms: D031021:Anacardium / Q000382:microbiology*; D031230:Ananas / Q000382:microbiology*; D015169:Colony Count, Microbial; D004926:Escherichia coli / Q000187:drug effects / Q000254:growth & development; D005503:Food Additives / Q000494:pharmacology*; D005506:Food Contamination / Q000517:prevention & control; D000067030:Fruit and Vegetable Juices / Q000032:analysis* / Q000382:microbiology; D008089:Listeria monocytogenes / Q000187:drug effects / Q000254:growth & development; D031022:Mangifera / Q000382:microbiology*; D027541:Mentha / Q000737:chemistry*; D009822:Oils, Volatile / Q000494:pharmacology*; D010936:Plant Extracts / Q000494:pharmacology; D031647:Psidium / Q000382:microbiology*; D012477:Salmonella enteritidis / Q000187:drug effects / Q000254:growth & development
chemical_list: D005503:Food Additives; D009822:Oils, Volatile; D010936:Plant Extracts
keywords: Antibacterial effects; Juice; Mentha spp.; Pathogenic bacteria; Preservation; Volatile oil