Research Article

Expanding the Use of a Fluorogenic Method to Determine Activity and Mode of Action of Bacillus thuringiensis Bacteriocins Against Gram-Positive and Gram-Negative Bacteria

Figure 1

(a) Fluorescence emitted by berberine sulfate upon influx into Salmonella sp. treated with different concentrations of bacteriocins produced by B. thuringiensis. (b) Correlation ( 𝑟 = 0 . 9 4 ) between the bacteriocin activity in mm2 of inhibition area and fluorescence. Morricin 269 (■); Kurstacin 287 (●); Kenyacin 404 (▲); Entomocin 420 (); Tolworthcin 524 ( ). (c) Fluorescence emitted by berberine sulfate inside Salmonella   sp. after the effect on cytoplasmic membrane induced by bacteriocin Kurstacin 287.
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