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African Journal of Traditional, Complementary and Alternative Medicines
African Ethnomedicines Network
ISSN: 0189-6016
Vol. 10, No. 4, 2013, pp. 101-108
Bioline Code: tc13093
Full paper language: English
Document type: Research Article
Document available free of charge

African Journal of Traditional, Complementary and Alternative Medicines, Vol. 10, No. 4, 2013, pp. 101-108

 en ANTIMICROBIAL AND FREE RADICAL SCAVENGING ACTIVITIES OF FIVE PALESTINIAN MEDICINAL PLANTS
Qabaha, Khaled Ibraheem

Abstract

Extracts from five indigenous Palestinian medicinal plants including Rosmarinus officinalis check for this species in other resources , Pisidium guajava check for this species in other resources , Punica granatum check for this species in other resources peel, grape seeds and Teucrium polium check for this species in other resources were investigated for antimicrobial and free radical scavenging activities against eight microorganisms, using well diffusion method. The microorganisms included six bacterial isolates (i.e. Staphylococcus aureus check for this species in other resources , Escherichia coli check for this species in other resources , Pseudomonas aeruginos check for this species in other resources , Klebsiella pneumonia check for this species in other resources , Bacillus subtilis check for this species in other resources and Micrococcus luteus check for this species in other resources ) and two final isolates (i.e. Candida albicans check for this species in other resources and Aspergillus niger check for this species in other resources ). A standard antioxidant assay was performed on the plant extracts to assess their capability in scavenging 2,2-diphenyl-1-picrylhydrazyl (DPPH). Of the five tested plant extract, only Rosmarinus offcinalisextract contained significant antimicrobial activity against all eight microbial isolates including Pseudomonas aeruginosa. Extracts from other four plants exhibited a variable antimicrobial activity against all microorganisms, except Pseudomonas aeruginosa. Significant antioxidant activity was detected in all plant extracts. However, extracts from Pisidium guajava leaves contained significantly higher antioxidant activity compared to the other extracts tested. The antimicrobial and scavenging activities detected in this in vitro study in extracts from the five Palestinian medicinal plants suggest that further study is needed to identify active compounds to target diseases caused by a wide-spectrum pathogens.

Keywords
Antimicrobial activity; plant extract; scavenging activity

 
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