Hydrolysis of raw fish proteins extracts by
Carnobacterium maltaromaticum strains isolated from Argentinean freshwater fish.
BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2021;
29:e00589. [PMID:
33489790 PMCID:
PMC7811128 DOI:
10.1016/j.btre.2021.e00589]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 09/05/2020] [Accepted: 12/31/2020] [Indexed: 11/24/2022]
Abstract
Carnobacterium and Vagococcus genera were identified from Paraná River freshwater fishes.
Low acidifying and antilisterial Carnobacterium strains were selected.
Proteolysis of raw fish extract by C. maltaromaticum strains was confirmed.
C. maltaromaticum strains may be used as functional cultures to develop novel LPFP.
Lactic acid bacteria (LAB) isolated from freshwater fish (hatcheries and captures) from Paraná river (Argentina) were analyzed by using culture-dependent approaches. The species belonging to Carnobacterium (C.) divergens, C. inhibens, C. maltaromaticum, C. viridans and Vagococcus (V.) salmoninarum were identify as predominant by RAPD-PCR and 16 s rRNA gene sequencing. C. maltaromaticum (H-17, S-30, B-42 and S-44) grew in raw fish extract and slightly reduced the medium pH (5.81–5.91). These strains exhibited moderate fish sarcoplasmic protein degradation (≤ 73 %) releasing small peptides and free amino acids, being alanine, glycine, asparagine and arginine concentrations increased in a higher extent (17.84, 1.47, 1.26 and 0.47 mg/100 mL, respectively) by S-44 strain at 96 h incubation. Interestingly C. maltaromaticum H-17 was able to inhibit Listeria monocytogenes. Results suggest that these strains would contribute to the development of new safe and healthy fishery products with improved nutritional and sensory characteristics.
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