Abstract
The pathogenic Vibrio sp. were isolated from diseased shrimp of Penaeus monodon (FAB) using TCBS agar medium by streak plate method. Acalipha indica (L), Vinca rosea (L), Embilica officinalis (G), Ocimum sanctum(L) and Lucas aspera (L) medicinal plants are one of the most commonly used natural antimicrobial agents used traditionally. Hence an attempt has been made to screen the antivibrio activity of some selected medicinal plants against pathogenic Vibrio sp by disk diffusion method. Among the five plants tested, water extract of Lucas aspera showed the maximum zone of inhibition against Vibrio cholerae (18±3.4 mm in diameter) and the alcohol extract showed the maximum zone of inhibition against Vibrio harveyi (NL) (16±3 mm in diameter).
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