Neem (Azadirachta indica) extract as an antibacterial agent against fish pathogenic bacteria.
Aquaneem, an emulsified product prepared from the neem (A. indica) kernel was tested against four pathogenic bacteria of fish (i.e. Aeromonas hydrophila, Pseudomonas fluorescens, Escherichia coli and Myxobacteria spp.) to test its efficacy as an antibacterial agent. Growth inhibitory property of the product at 10, 15 and 20 ppm has been noticed and recorded. The percentage reduction of bacterial cell population was noted to be maximum on 9th day at 20 ppm concentration (i.e. 70.14%, 74.15% and 61.75% for A. hydrophila, P. fluorescens and E. coli respectively) with the only exception of myxobacteria which showed maximum reduction percentage (63.90%) on 15th day. Among all the bacteria tested A. hydrophila, P. fluorescens and Myxobacteria spp. exhibited maximum sensitivity to Aquaneem in terms of percentage reduction of bacterial cell population in comparison to E. coli.
Das
B K
BK
Aquatic Animal Health Division, Central Institute of Freshwater Aquaculture, Bhubaneswar, India.
Mukherjee
S C
SC
Sahu
B B
BB
Murjani
G
G
D016980:Aeromonas hydrophila / Q000187:drug effects; D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D004926:Escherichia coli / Q000187:drug effects; D005399:Fishes / Q000382:microbiology*; D009231:Myxococcales / Q000187:drug effects; D010936:Plant Extracts / Q000494:pharmacology; D010946:Plants, Medicinal; D011551:Pseudomonas fluorescens / Q000187:drug effects
D000900:Anti-Bacterial Agents; D010936:Plant Extracts