Table Olives from Portugal: Phenolic Compounds, Antioxidant Potential, and Antimicrobial Activity
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- 作者：José ; Alberto Pereira ; Ana P. G. Pereira ; Isabel C. F. R. Ferreira ; Patrí ; cia Valentã ; o ; Paula B. Andrade ; Rosa Seabra ; Letí ; cia Estevinho ; Albino Bento
- 刊名：Journal of Agricultural and Food Chemistry
- 出版年：2006
- 出版时间：November 1, 2006
- 年：2006
- 卷：54
- 期：22
- 页码：8425 - 8431
- 全文大小：83K
- 年卷期：v.54,no.22(November 1, 2006)
- ISSN：1520-5118
文摘
The phenolic compounds composition, antioxidant potential, and antimicrobial activity of differenttable olives from Portugal, namely, natural black olives "Galega", black ripe olive "Negrinha de Freixo",Protected Designation of Origin (PDO) "Azeitona de Conserva Negrinha de Freixo" olives, and"Azeitona de Conserva de Elvas e Campo Maior" Designation of Origin (DO) olives, were investigated.The analysis of phenolic compounds was performed by reversed-phase HPLC/DAD, and sevencompounds were identified and quantified: hydroxytyrosol, tyrosol, 5-O-caffeoilquinic acid, verbascoside, luteolin 7-O-glucoside, rutin, and luteolin. The antioxidant activity was assessed by the reducingpower assay, the scavenging effect on DPPH (2,2-diphenyl-1-picrylhydrazyl) radicals, and the
-carotene linoleate model system. The antioxidant activity was correlated with the amount of phenolicsfound in each sample. The antimicrobial activity was screened using Gram-positive (Bacillus cereus,Bacillus subtilis, Staphylococcus aureus) and Gram-negative bacteria (Pseudomonas aeruginosa,Escherichia coli, Klebsiella pneumoniae) and fungi (Candida albicans, Cryptococcus neoformans).PDO and DO table olives revealed a wide range of antimicrobial activity. C. albicans was resistantto all the analyzed extracts.
-carotene linoleate model system. The antioxidant activity was correlated with the amount of phenolicsfound in each sample. The antimicrobial activity was screened using Gram-positive (Bacillus cereus,Bacillus subtilis, Staphylococcus aureus) and Gram-negative bacteria (Pseudomonas aeruginosa,Escherichia coli, Klebsiella pneumoniae) and fungi (Candida albicans, Cryptococcus neoformans).PDO and DO table olives revealed a wide range of antimicrobial activity. C. albicans was resistantto all the analyzed extracts.