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Evaluation of in vitro
antibacterial property of seaweeds of southeast coast of
India
M. Kandhasamy1,2
and K. D. Arunachalam3*
1Department
of Microbiology, PGP College of Arts and Sciences, Namakkal.
Tamil Nadu, India.
2Centre
for Marine and Coastal Studies, School of Energy Sciences,
Madurai Kamaraj University, Madurai, Tamil Nadu, India – 625
021.
3Department
of Bio-Technology, SRM University, Chennai, Tamil Nadu,
India.
*Corresponding author: E-mail:
mookiah_kandhan@yahoo.co.in.
Accepted 19
March, 2008 |
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The in vitro antibacterial activities of seaweeds
belong to Chlorophyceae (Caulerpa racemosa and
Ulva lactuca), Rhodophyceae (Gracillaria folifera
and Hypneme muciformis) and Phaeophyceae (Sargassum
myricocystum, Sargassum tenneerimum and Padina
tetrastomatica) were studied against both Gram-negative
and Gram-positive pathogenic bacteria. Methanolic extracts
of all seaweed extracts tested in the present study
exhibited broad spectrum of antibacterial activity.
Chlorophyceae members showed high antibacterial activity
than other members of the algae tested in the present
investigation. Escherchia coli alone resistant to all
the seaweed extracts except S. teneerimum. Results of
the present study confirmed the potential use of seaweed
extracts as a source of antibacterial compounds.
Key
words:
Seaweeds, antibacterial activity, methanolic extracts,
pathogenic bacteria. |
