In accordance with Figure , the dispersion of DT from the Brij micelle plays a crucial role in regulating the suppression of bacterial growth. At the neutral pH (pH 7), a significant reduction in growth was not observed due to the diminished penetration of DT entrapped Brij micelles into the cells of B. subtilis and E. coli. This reduced penetration can be attributed to the higher viscosity and 'steric hindrance' instigated by the larger dimensions of the micelles .