Journal
FOOD PACKAGING AND SHELF LIFE
Volume 18, Issue -, Pages 147-156Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.fpsl.2018.11.006
Keywords
Saithe; Modified atmosphere packaging; ATP-degradation; Biogenic amines; Microbiological ecology
Categories
Funding
- Regional Research Found Mid-Norway [248954]
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The experimental design was set up to study the effect of different modified atmospheres (CO2 (67 or 33%) balanced with either O-2 or N-2) on autolytic-and microbiological deterioration of chilled saithe (Pollachius virens). As controls, vacuum packaged saithe was used. The results showed a positive effect of gas mixtures containing O-2 on physiochemical and microbial product quality. Discriminating factors were; lower psychrotrophic count, slower breakdown of ATP, lower contents of certain biogenic amines (e. g. cadaverine) and reduced drip loss during storage. A high CO2 concentration (67%) in the packaging atmosphere was moreover found to inhibit microbial proliferation. Vacuum-packaged saithe stand out negatively with highest DL and reduced sensory shelf life and physiochemical and microbial quality. It was moreover found that increased drip loss, and higher contents of hypoxanthine and cadaverine in the muscle tissue was related to the microbiological ecology (i. e. increased growth of Shewanella spp. and Photobacterium spp.).
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