Documents

Links

View graph of relations

The present study evaluated the effect of pomegranate extract (1% v/w) and rosemary extract (1% v/w) as natural preservatives as well as their combination (1% v/w) on shelf life extension of previously frozen and chilled Greenland halibut fillets in modified atmosphere packaging (MAP, 40%CO2/60%N2) at 2 °C. Parameters that were monitored were: microbiological (aerobic plate counts (APC), lactic acid bacteria (LAB), Lactobacillus spp., and Photobacterium phosphoreum), biochemical (pH, thio-barbituric acid (TBA), trimethylamine (TMA) and total-volatile-nitrogen (TVN)), and sensory (color, flavor and texture) attributes. For microbiological results, irrespective of treatments, APC reached levels ≥107 CFU/g during storage. The spoilage microflora of fillets in MAP was dominated by LAB, but the concentration of Lactobacillus was very low. During storage, P.phosphoreum was not detected in any sample. Among the chemical indices examined, TBA values of control samples exceeded the limit of 2 mg malondialdehyde (MDA)/kg (2.78 and 4.08 mg MDA/kg) on days 18 and 23 of storage, respectively, while TBA values for samples treated with extracts remained below the limit throughout the storage period. Final (TMA) and (TVN) values for all treatments ranged between 0.15 to 0.37 mg N/100 g and 16.90 to 24.10 mg N/100 g after 23 days of storage, respectively, not exceeding upper acceptability limit set by EU. Sensory analysis correlated well with TMA and TVN analysis, indicating a shelf life of longer than 23 days for all samples. The research was supported by the Federation of European Microbiological Societies (FEMS) and performed during a research visit by İlke Uysal Ünalan at DTU Food.
Original languageEnglish
Title of host publicationProceedings Of The International Food Congress Novel Approaches In Food Industry
Number of pages262
Volume1
PublisherNAFI
Publication date2011
Pages189-196
StatePublished - 2011
EventInternational Food Congress Novel Approaches In Food Industry - Çeşme - İzmir, Turkey

Conference

ConferenceInternational Food Congress Novel Approaches In Food Industry
CityÇeşme - İzmir, Turkey
Period01/01/2011 → …
Download as:
Download as PDF
Select render style:
APAAuthorCBE/CSEHarvardMLAStandardVancouverShortLong
PDF
Download as HTML
Select render style:
APAAuthorCBE/CSEHarvardMLAStandardVancouverShortLong
HTML
Download as Word
Select render style:
APAAuthorCBE/CSEHarvardMLAStandardVancouverShortLong
Word

Download statistics

No data available

ID: 5825089