Title |
CHEMICAL COMPOSITION, ANTIOXIDANT AND ANTIMICROBIAL PROPERTIES OF THREE ESSENTIAL OILS FROM PORTUGUESE FLORA |
| J Phcog Vol:3 Iss:1 (2012-02-20) : 39-44 |
Authors |
MARTINS M.R., TINOCO M.T., ALMEIDA A.S., CRUZ-MORAIS J. |
Published on |
20 Feb 2012 Pages : 39-44 Article Id : BIA0000423 Views : 1004 Downloads : 849 |
DOI | http://dx.doi.org/10.9735/0976-884X.3.1.39-44 |
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Abstract |
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The present work reports on the evaluation of chemical composition and antioxidant and antimicrobial activities of essential oils of
three aromatic herbs, growing wild in the south of Portugal, used in traditional food preparations: Foeniculum vulgare, Mentha spicata and
Rosmarinus officinalis. The principal components of essential oils were anethole (41.2%) for F. vulgare, carvone (41.1%) for M. spicata and
myrcene (23.7%) for R. officinalis. Essential oils showed antioxidant activity either by DPPH radical scavenging method and system β-
carotene/acid linoleic method. Antimicrobial activity of essential oils was observed against pathogenic bacteria and yeasts and food spoilage
fungi. F.vulgare essential oil showed bacterial activity against Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis, Pseudomonas aeruginosa,
Salmonella enteritidis, Staphylococcus aureus, Aspergillus niger and Fusarium oxysporum with MICs of 0.25-0.75mg/mL. M. spicata
oil was active against E.coli, S.aureus, C.albicans, A. niger and F. oxysporum with MICs ranging between 0.25 and 0.75mg/mL. R. officinalis
essential oil showed activity against E.coli and C.albicans with MICs of 0.5-1.0mg/mL.
Having in account the important antioxidant and antimicrobial properties observed in present work, we consider that these essential oils might
be useful on pharmaceutical and food industry as natural antibiotic and food preservative.
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Title |
ANTIVIRAL MEDICINAL HERBS AND PHYTOCHEMICALS |
| J Phcog Vol:3 Iss:1 (2012-02-24) : 45-48 |
Authors |
CECILIA PERERA, THOMAS EFFERTH |
Published on |
24 Feb 2012 Pages : 45-48 Article Id : BIA0000424 Views : 1023 Downloads : 1026 |
DOI | http://dx.doi.org/10.9735/0976-884X.3.1.45-48 |
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Abstract |
Full Text |
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Due to the global disease burden caused by viral infections there is an urgent need for novel and more effective antiviral drugs. Medicinal herbs and their bioactive constituents came in the center of interest, since they may provide feasible treatment options for the population of developing countries, where the majority of the population cannot account for expensive chemical drugs of western medicine. This review gives an overview of some important medicinal plants with antiviral activity, their bioactive constituents and the modes of action.
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