Removal of Triphenylmethane Dyes by Bacterial Consortium

Table 3

Response of triphenylmethane dyes before and after treatment by a new bacterial consortium CM-4 in Salmonella typhimurium (TA98 and TA100) without metabolic activation.

S. typhimurium strains
	TA98	TA100	MR for TA98	MR for TA100
Mean revertants per plate^a
SR	𝟏𝟕.𝟓±𝟑.𝟓	𝟐𝟖±𝟒.𝟐
Samples untreated
CV^1	𝟐𝟐.𝟓±𝟑.𝟓	𝟒𝟏.𝟓±𝟐.𝟏	1.2	1.4
CV^2	𝟐𝟒.𝟓±𝟐.𝟏	𝟒𝟒.𝟓±𝟔.𝟑	1.4	1.5
MG^1	𝟏𝟐±𝟐.𝟖	𝟐𝟖.𝟓±𝟒.𝟗	0.6	1.0
MG^2	𝟏𝟕.𝟓±𝟐.𝟏	𝟑𝟒.𝟓±𝟒.𝟗	1.0	1.2
Samples treated by CM-4
CV^1	𝟐𝟎.𝟓±𝟐.𝟏	𝟐𝟗±𝟏.𝟒	1.1	1.0
CV^2	𝟏𝟒.𝟓±𝟐.𝟏	𝟏𝟕±𝟏.𝟒	0.8	1.0
MG^1	𝟏𝟒±𝟐.𝟖	𝟑𝟔±𝟏.𝟒	0.8	1.2
MG^2	𝟗.𝟓±𝟐.𝟏	𝟐𝟔.𝟓±𝟐.𝟏	0.5	0.9

CV, crystal violet; MG, malachite green; S., Salmonella; SR, spontaneous revertants; ¹, 500 μg per plate; ², 250 μg per plate; ^avalues obtained from duplicate plates; MR, mutagenic ratio.