Name of the test organism Isolate Y1 Isolate Y2 Isolate Y3 Isolate Y4 Bacillus cereus + - + + Bacillus subtilis + + - - Bacillus megatorium - - - _ Salmonella typhi - - + - Salmonella paratyphi + + - - E. coli + + + + Pseudomonas aureginosa + + + + S. aureus + - - - Vibrio parahaemolyticus - + + + (- = Bacteriocidal; += Bacteriostatic)

Table 2: Bacteriocidal and Bacteriostatic activity of isolate Y1, Y2, Y3and Y4