Title of article :
Antibacterial and anti-PAF activity of lipid extracts from sea bass (Dicentrarchus labrax) and gilthead sea bream (Sparus aurata)
Author/Authors :
Nasopoulou، نويسنده , , Constantina and Karantonis، نويسنده , , Haralabos C. and Andriotis، نويسنده , , Michalis and Demopoulos، نويسنده , , Constantinos A. and Zabetakis، نويسنده , , Ioannis، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Pages :
6
From page :
433
To page :
438
Abstract :
The anti-PAF and the antibacterial activities of lipid extracts obtained from cultured sea bass (Dicentrarchus labrax) and cultured gilthead sea bream (Sparus aurata) were evaluated. Total lipids of sea bass and gilthead sea bream exerted PAF-like activity while, in higher amounts they inhibited this PAF activity. Neutral lipids of both sea bass and gilthead sea bream contained only PAF antagonists while the polar lipid fractions contained both PAF antagonists and agonists. Total lipids of sea bass exhibited stronger PAF-like activity than did those of gilthead sea bream; however, neutral lipids of sea bass contained stronger PAF antagonists than did gilthead sea bream. lipids of both sea bass and gilthead sea bream exhibited antibacterial activity only towards Staphylococcus aureus (S. aureus) with those of sea bass being more potent. Subsequently, neutral lipids of both sea bass and gilthead sea bream also showed antibacterial activity against S. aureus and less so towards Escherichia coli (E. coli), while only neutral lipids of sea bass showed antibacterial activity against Enterococcus faecalis (E. faecalis). Sea bass neutral lipids were more active against S. aureus than were those of gilthead sea bream, while their activity towards E. coli was similar. Polar lipids of both sea bass and gilthead sea bream showed antibacterial activity against all bacteria strains. Sea bass polar lipids were more active towards S. aureus than were those of gilthead sea bream, while their activities against E. faecalis and E. coli were the same. tected antibacterial activities of the lipid extracts isolated from sea bass and gilthead sea bream were observed in amounts equal to those that exerted either PAF inhibition or PAF-like activity, suggesting that PAF antagonists and agonists of fish lipids may be responsible for the antibacterial activity.
Keywords :
Sea bream , Platelet activating factor (PAF) , Antibacterial activity , sea bass
Journal title :
Food Chemistry
Serial Year :
2008
Journal title :
Food Chemistry
Record number :
1957236
Link To Document :
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