Co-Inoculation with Staphylococcus equorum and Lactobacillus sakei Reduces Vasoactive Biogenic Amines in Traditional Dry-Cured Sausages

Igor Dias, Marta Laranjo, Maria Eduarda Potes, Ana Cristina Agulheiro-Santos, Sara Ricardo-Rodrigues, Ana Rita Fialho, Joana Véstia, Maria J. Fraqueza, Margarida Oliveira and Miguel Elias
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Igor Dias: MED—Mediterranean Institute for Agriculture, Environment and Development, IIFA-Instituto deInvestigação e Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal
Marta Laranjo: MED—Mediterranean Institute for Agriculture, Environment and Development, IIFA-Instituto deInvestigação e Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal
Maria Eduarda Potes: MED—Mediterranean Institute for Agriculture, Environment and Development, IIFA-Instituto deInvestigação e Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal
Ana Cristina Agulheiro-Santos: MED—Mediterranean Institute for Agriculture, Environment and Development, IIFA-Instituto deInvestigação e Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal
Sara Ricardo-Rodrigues: MED—Mediterranean Institute for Agriculture, Environment and Development, IIFA-Instituto deInvestigação e Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal
Ana Rita Fialho: MED—Mediterranean Institute for Agriculture, Environment and Development, IIFA-Instituto deInvestigação e Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal
Joana Véstia: MED—Mediterranean Institute for Agriculture, Environment and Development, IIFA-Instituto deInvestigação e Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal
Maria J. Fraqueza: CIISA—Centro de Investigação Interdisciplinar em Sanidade Animal, Faculdade de Medicina Veterinária, Universidade de Lisboa, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal
Margarida Oliveira: CIEQV—Life Quality Research Centre, Avenida Dr. Mário Soares n 110, 2040-413 Rio Maior, Portugal
Miguel Elias: MED—Mediterranean Institute for Agriculture, Environment and Development, IIFA-Instituto deInvestigação e Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal

IJERPH, 2021, vol. 18, issue 13, 1-14

Abstract: Dry-cured sausages are traditional in Mediterranean countries, and Paio do Alentejo (PA) is one of the most popular in South Portugal. The aim of the present work was to evaluate the effect of combined starters on the safety and quality of PA preserving its sensory quality. Physicochemical parameters, namely pH and water activity (a W ), microbiological parameters, biogenic amines, color, texture, and sensory attributes were assessed. Three starter cultures were used, namely Staphylococcus equorum S2M7 and Lactobacillus sakei CV3C2, both separate and combined with the 2RB4 yeast strain at a concentration of 10 6 cfu/g. Dextrose 0.25% was added to the meat batter. Starters had a significant effect on the reduction of a W values (0.845 to 0.823). The treatment with L. sakei as well as the co-inoculation of L. sakei with S. equorum effectively reduced the L. monocytogenes counts to undetectable levels. Sausages co-inoculated with S. equorum S2M7/ L. sakei CV3C2 showed a significant reduction in the content of vasoactive amines, namely tryptamine (26.21 to 15.70) and ?-phenylethylamine (4.80 to 3.69). Regarding texture, control PA showed higher hardness values, and the starters promoted the cohesiveness of the batter while reducing chewiness. The studied starters did not compromise the sensory characteristics of PA.

Keywords: dry-cured sausages; starter cultures; staphylococci; lactic acid bacteria; food safety; biogenic amines; Listeria monocytogenes; food quality (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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