Evaluation of Antimicrobial and Antioxidant Properties for Selected Syzygium Species


Ong B.K., Norhayati A., Saiful Azmi J., Rohana S., Vimala S., Norulaiman Y., Nor Azah M., Khoo G.H.M., & Mohd Radzi A.
Medicinal Plants Programme, Forest Biotechnology Division, Forest Reseach lnstitute Malaysia. 52109 Kepong, Selangor
Tel: 03-62797330 Fa: 03-62729805 EmaiI: ongbkfrim.gov.my




Evaluation of Antimicrobial and Antioxidant Properties for Selected Syzygium Species


Medicinal and Aromatic Plants Seminar (MAPS 2008)


21st October - 22nd October 2008

Place Held

The Legend Hotel, Kuala Lumpur


Syzygium is a genus of about 500 species from the family Myrtaceae, occurring in tropical and subtropical rainforests. Many are of economic importance as cultivated fruits. Plants of this genus are reported to be strongly antiseptic, astringent, expectorant and tonic with anti-viral properties. Twelve plant extracts from four Syzygium species; namely, Syzygium aromaticum (bunga cengkih), S. malaccense (jambu bol), S. jambos (jambu mawar) and S. grande (kelat jambu laut) were evaluated for antioxidant and anti-microbial properties. The antioxidant activities were determined using superoxide scavenging assay. DPPH radical scavenging assay and tyrosinase inhibition assay. Extracts SML, SAFS and SAFL exhibited high antioxidant properties. The antibacterial activities were determined via minimum inhibitory concentration (MIC) test and minimum bactericidal concentration (MBC) test against Escherfchia coli (ATCC 10536), Pseudomonas aerognosa (ATCC 27853), Staphylococcus aureus (ATCC 25923) and Staphylococcus aureus (ATCC 29213 alfa). Extracts SGL and SAFL showed antimicrobial activities against Staphylococcus aureus alfa.


antioxidant; antimicrobial; Syzigium aromaticum; Syzygium malaccense; Syzygium jambos; Syzygium grande


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