Document Detail


Combined effect of vacuum-packaging and oregano essential oil on the shelf-life of Mediterranean octopus (Octopus vulgaris) from the Aegean Sea stored at 4 degrees C.
MedLine Citation:
PMID:  19171258     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The present study evaluated the use of vacuum packaging (alone) or with addition of oregano essential oil (EO), as an antimicrobial treatment for shelf-life extension of fresh Mediterranean octopus stored under refrigeration for a period of 23 days. Four different treatments were tested: A, control sample; under aerobic storage in the absence of oregano essential oil; VP, under vacuum packaging in the absence of oregano essential oil; and VO1, VO2, treated samples with oregano essential oil 0.2 and 0.4% (v/w), respectively, under VP. Of all the microorganisms enumerated, Pseudomonas spp., H2S-producing bacteria and lactic acid bacteria (LAB) were the groups that prevailed in octopus samples, irrespective of antimicrobial treatment. With regard to the chemical freshness indices determined, thiobarbituric acid (TBA) values were low in all octopus samples, as could have been expected from the low fat content of the product. Both trimethylamine nitrogen (TMA-N) and total volatile basic nitrogen (TVB-N) values of oregano treated under VP octopus samples were significantly lower compared to control samples during the entire refrigerated storage period. Based primarily on sensory evaluation (odor), the use of VP, VO1 and VO2 extended the shelf-life of fresh Mediterranean octopus by ca. 3, 11 and 20 days, respectively.
Authors:
I Atrea; A Papavergou; I Amvrosiadis; I N Savvaidis
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Publication Detail:
Type:  Journal Article     Date:  2008-11-01
Journal Detail:
Title:  Food microbiology     Volume:  26     ISSN:  1095-9998     ISO Abbreviation:  Food Microbiol.     Publication Date:  2009 Apr 
Date Detail:
Created Date:  2009-01-27     Completed Date:  2009-04-17     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8601127     Medline TA:  Food Microbiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  166-72     Citation Subset:  IM    
Affiliation:
Laboratory of Hygiene of Foods of Animal Origin, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece.
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MeSH Terms
Descriptor/Qualifier:
Animals
Cold Temperature
Colony Count, Microbial
Consumer Product Safety
Dose-Response Relationship, Drug
Food Contamination / prevention & control
Food Packaging / methods*
Food Preservation / methods*
Food Preservatives / pharmacology*
Humans
Octopodiformes / microbiology*
Oils, Volatile / pharmacology
Origanum / chemistry*
Plant Oils / pharmacology*
Time Factors
Vacuum*
Chemical
Reg. No./Substance:
0/Food Preservatives; 0/Oils, Volatile; 0/Plant Oils

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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