Optical densities of the suspension were measured spectrophotometrically
on an SF-103 spectrophotometer (Akvilon, Russia) every two hours
for 48 h at a wavelength of 540 nm and cuvette thickness of 1 cm
relative to a cuvette with distilled water. The obtained dependences
of optical density on time were used to plot the growth curves for
the yeast and bacterial cells.