title: Effects of packaging, mineral oil coating, and storage time on biogenic amine levels and internal quality of eggs.
abstract: This study was carried out with the aim of evaluating the effects of mineral oil application on eggshells and the use of plastic packages with lids on the physical-chemical and microbiological quality and biogenic amine contents of eggs stored under refrigeration for up to 125 d. A total of 1,920 eggs from 46-wk-old Hyline W36 laying hens were randomly distributed into 4 groups soon after classification: (i) 480 eggs were stored in pulp carton tray packages; (ii) 480 eggs were stored in plastic packages with lids; (iii) 480 eggs were stored in carton packages after the application of mineral oil; and (iv) 480 eggs were stored in plastic packages with lids after the application of mineral oil. The internal quality was measured by Haugh units, by the counts of mesophilic and psychrotrophic microorganisms, by the most probable number of total and thermal-tolerant coliforms, by the counts of molds and yeasts, by the analysis of Salmonella spp. and Staphylococcus spp., and by the levels of biogenic amines in the egg yolk and albumen. The application of mineral oil to the eggshell resulted in higher Haugh unit values throughout storage, and the use of plastic packages altered the internal quality. The application of mineral oil and the use of packaging had no effects on the microbiological and biogenic amine results. Microbiological analyses showed the absence of Salmonella spp., Staphylococcus aureus, thermal-tolerant coliforms, and fungi. However, the highest counts of mesophilic (1.1 × 10(7) cfu/g) and psychrotrophic (6.7 × 10(7) cfu/g) microorganisms were recorded. The highest values of biogenic amines detected and quantified were putrescine (2.38 mg/kg) and cadaverine (7.27 mg/kg) in the egg yolk and putrescine (1.95 mg/kg), cadaverine (2.83 mg/kg), and phenylethylamine (2.57 mg/kg) in the albumen. Despite these results, the biogenic amine levels recorded were considered low and would not be harmful to consumer health.
authors.affiliation: Escola de Veterinária da Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, 30123-970, Brazil tadeu@vet.ufmg.br.
authors.forename: T C
authors.initials: TC
authors.lastname: Figueiredo
authors.affiliation: Escola de Veterinária da Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, 30123-970, Brazil.
authors.forename: D C S
authors.initials: DC
authors.lastname: Assis
authors.affiliation: Instituto Mineiro de Agropecuária, Rodovia Américo Gianetti, 4001, Belo Horizonte, CEP: 31.630-901, Brazil.
authors.forename: L D M
authors.initials: LD
authors.lastname: Menezes
authors.affiliation: Aviário Santo Antônio, Rua Conde Pereira Carneiro, 80, Belo Horizonte, 30510-010, Brazil.
authors.forename: D D
authors.initials: DD
authors.lastname: Oliveira
authors.affiliation: Escola de Veterinária da Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, 30123-970, Brazil.
authors.forename: A L
authors.initials: AL
authors.lastname: Lima
authors.affiliation: Escola de Veterinária da Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, 30123-970, Brazil.
authors.forename: M R
authors.initials: MR
authors.lastname: Souza
authors.affiliation: Fundação Ezequiel Dias, Rua Conde Pereira Carneiro, 80, Belo Horizonte, 30510-010, Brazil.
authors.forename: L G D
authors.initials: LG
authors.lastname: Heneine
authors.affiliation: Escola de Veterinária da Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, 30123-970, Brazil.
authors.forename: S V
authors.initials: SV
authors.lastname: Cançado
mesh_terms: D000818:Animals; D001679:Biogenic Amines / Q000737:chemistry*; D002645:Chickens; D004531:Eggs / Q000032:analysis* / Q000592:standards*; D005260:Female; D005511:Food Handling / Q000379:methods*; D008899:Mineral Oil; D013997:Time Factors
chemical_list: D001679:Biogenic Amines; D008899:Mineral Oil
keywords: biogenic amine; egg quality; microbiological quality; mineral oil treatment; packaging