International Journal of
Medicine and Medical Sciences

  • Abbreviation: Int. J. Med. Med. Sci.
  • Language: English
  • ISSN: 2006-9723
  • DOI: 10.5897/IJMMS
  • Start Year: 2009
  • Published Articles: 537

Full Length Research Paper

Antimicrobial compounds from marine halophytes for silkworm disease treatment

S. Ravi Kumar
  • S. Ravi Kumar
  • School of Marine Sciences, Centre for Marine Pharmacology, Alagappa University, Thondi Campus 623 409, Tamil Nadu, India.
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G. Ramanathan
  • G. Ramanathan
  • Department of Microbiology, V. H. S. N. College, Virudhunagar, Tamilnadu, India.
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M. Subhakaran
  • M. Subhakaran
  • Department of Zoology, Arignar Anna College, Aralvaimozhi, Kanyakumari District, Tamil Nadu, India.
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S. Jacob Inbaneson
  • S. Jacob Inbaneson
  • School of Marine Sciences, Centre for Marine Pharmacology, Alagappa University, Thondi Campus 623 409, Tamil Nadu, India.
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  •  Accepted: 17 April 2009
  •  Published: 30 May 2009

Abstract

Forty-five crude methanolic extracts from 23 marine halophytes were screened against five bacterial and two fungal saprophytic pathogens of diseased silkworm Bombyx mori. Amongthirty-four mangrove samples screened for antibacterial activity, the leaf extract of Rhizophora mucronata showed maximum inhibitory activity against Staphylococcus aureus (20 mm dia.). The seaweed species of Padina tetrostomatica showed maximum inhibitory activity againstProteus vulgaris (11 mm dia) and the seagrass species of Syringodium isoetifolium showed maximum inhibition against P. vulgaris (9 mm dia). The solar saltern cyanobacteriumPhormidium fragile exhibits higher inhibitory activity against P. vulgaris (17 mm dia). The growth of fungal pathogens of Aspergillus niger was highly inhibited by S. isoetifolium (15 mm dia) and Padina tetrostomatica (13 mm dia) respectively compared with the other extracts. It is also noted that 16x concentration of the leaf extract of R. mucronata and S. isoetifoliumshowed complete reduction in the bacterial and fungal viable counts within 3 h of exposure.

Key words: Mangroves, Bombyx mori, seaweed, sea grass, time kill assay herbal disinfectants, cyanobacteria.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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