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Limited microbial growth in Atlantic salmon packed in a modified atmosphere
Citation
Milne, D and Powell, SM, Limited microbial growth in Atlantic salmon packed in a modified atmosphere, Food Control, 42 pp. 29-33. ISSN 0956-7135 (2014) [Refereed Article]
Copyright Statement
Crown Copyright 2014
DOI: doi:10.1016/j.foodcont.2014.01.035
Abstract
This study examined the dynamics of microbial growth in fresh chilled Atlantic salmon (Salmo salar)
packed in a modified atmosphere. Atlantic salmon were harvested, handled, transported, and processed
under optimal conditions to produce skinless fillet portions packed in pouches containing 96% CO2 at gas:
product ratios of greater than 5:1 (v/w) and stored for 38 days at less than 1 °C. Microbial analysis was
conducted using psychrotrophic and mesophilic plate counts and DNA-based techniques. Results
revealed initial microbial counts at day 0 of 102 CFU g-1 and sequences from the genera Luteimonas,
Pseudorhodoferax, Aequorivita, Gillisia, Gramella, Micrococcus, Acidovorax and Achromobacter. An extended
lag phase was observed of 10 (psychrotrophic) or 15 (total) days with total plate count numbers reaching
106 CFU g-1 after 21 (psychrotrophic) and 25 days (total) and stabilising at 108 CFU g-1 after 31 days. At
31 days the microbial community was dominated by Pseudomonas spp. as determined by identification of
isolates and sequencing of a 16S rRNA gene clone library. No Photobacterium spp., including the specific
spoilage organism Photobacterium phosphoreum, were identified during the study.
Item Details
Item Type: | Refereed Article |
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Keywords: | Atlantic salmon, spoilage, carbon dioxide, seafood, lactic acid bacteria, pseudomonas |
Research Division: | Agricultural, Veterinary and Food Sciences |
Research Group: | Food sciences |
Research Field: | Food packaging, preservation and processing |
Objective Division: | Animal Production and Animal Primary Products |
Objective Group: | Primary products from animals |
Objective Field: | Unprocessed or minimally processed fish |
UTAS Author: | Milne, D (Mr David Milne) |
UTAS Author: | Powell, SM (Dr Shane Powell) |
ID Code: | 88870 |
Year Published: | 2014 |
Web of Science® Times Cited: | 19 |
Deposited By: | Tasmanian Institute of Agriculture |
Deposited On: | 2014-02-19 |
Last Modified: | 2017-11-06 |
Downloads: | 0 |
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