We are reporting the effect of different culture media
on the production of spore-crystal complexes. It was
shown that the maximum concentration of spores was
obtained using the M2 medium and that this value was
significantly different from the values obtained using
the other media, with the M3 medium yielding a 16%
lower concentration of spores, the M4 medium yielding
a 54% lower concentration of spores, and the M1 medium
yielding a 65% lower concentration of spores
compared with the M2 medium. Variations in spore
concentrations are sometimes due to variations in the
initial number of cells inoculated