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- Title
Screening of lactic acid bacteria for fermentation of minced wastes of Argentinean hake (Merluccius hubbsi).
- Authors
Góngora, Hernán G.; Ledesma, Pablo; Lo Valvo, Victor R.; Ruiz, Ana E.; Breccia, Javier D.
- Abstract
Sixteen strains of lactic acid bacteria were evaluated for their capacity of acidification of Merluccius hubbsi fish wastes obtained from a processing factory. Only three lactobacilli (Lactobacillus buchneri B-1837, Lactobacillus arizonensis B-14768 and Lactobacillus plantarum B-4496) were able to reduce the pH value to 4.0 or below when using glucose or sucrose as carbon source. Either with only 25 gl-1 of glucose or sucrose, L. arizonensis B-14768 reduced the pH to 3.8±0.2 within 24h of fermentation. The acid tolerance test (pH 3.0 at 37 C) for the strains presented Dpm-values of 192, 383 and 767 min for L. buchneri, L. plantarum and L. arizonensis, respectively. However, at a lower pH value (pH 2.0) only L. arizonensis was significantly recovered after 45 min of exposure (Dph2 68 min). Considering together the acidification capacity, the tolerance to other stresses (heat and bile salts) and the lower optimum temperature for the process, L. arizonensis is described as a suitable strain for M. hubbsi silage; constituting a promissory alternative for fish fermentation at location with temperate or cold climes.
- Subjects
LACTIC acid bacteria; FERMENTATION; ARGENTINE hake; ACIDIFICATION; FISH waste; LACTOBACILLUS; FERMENTED fish
- Publication
Food & Bioproducts Processing: Transactions of the Institution of Chemical Engineers Part C, 2012, Vol 90, Issue 4, p767
- ISSN
0960-3085
- Publication type
Article
- DOI
10.1016/j.fbp.2012.04.002