An Exploratory Study on Spoilage Bacteria and Listeria monocytogenes in Fresh Salmon : Extending Shelf-Life Using Vacuum and Seasonings as Natural Preservatives

A growing population increases the demand for food, but short shelf-lives and microbial hazards reduce supply and increase food waste. Fresh fish is highly perishable and may be consumed raw, such as salmon in sushi. This work aims to identify strategies to improve the shelf-life and safety of fresh salmon, using available methods (i.e., vacuum) and exploring the use of natural preservatives (i.e., seasonings). Vacuum packaging and good hygiene practices (which reduce initial flora) extended shelf-life up to 20 days. Carnobacterium maltaromaticum was dominant in vacuum packaging conditions and showed potential for inhibiting Listeria monocytogenes. For natural preservatives, L. monocytogenes required higher inhibitory concentrations in vitro when compared to the 10 spoilage bacteria isolated from fresh salmon fillets, presenting a minimum inhibitory concentration (MIC) of 0.13% for oregano essential oil (OEO), 10% for lemon juice, 50 mg mL-1 for garlic powder, and >10% for NaCl. A good bacteriostatic and bactericidal effect was observed for a mixture containing 5% NaCl, 0.002% OEO, 2.5% lemon juice, and 0.08 mg mL-1 garlic powder. Finally, using the salmon medium showed an adequate correlation with the commercial culture medium.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:10

Enthalten in:

Veterinary sciences - 10(2023), 7 vom: 29. Juni

Sprache:

Englisch

Beteiligte Personen:

Lemos, Maria-Leonor [VerfasserIn]
Prata, Joana C [VerfasserIn]
Rodrigues, Inês C [VerfasserIn]
Martins-Costa, Sofia [VerfasserIn]
Archer, Bernardo [VerfasserIn]
Machado, Jorge [VerfasserIn]
Dilão, Rui [VerfasserIn]
Vaz-Pires, Paulo [VerfasserIn]
Martins da Costa, Paulo [VerfasserIn]

Links:

Volltext

Themen:

Biopreservation
Journal Article
Listeria monocytogenes
Salmon
Shelf-life
Spoilage microbiota

Anmerkungen:

Date Revised 01.08.2023

published: Electronic

Citation Status PubMed-not-MEDLINE

doi:

10.3390/vetsci10070423

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM360057268