tested four Mucor strains for their ability to grow on cereal substrates.These authors reported the maximum production of 8.5mg of β-carotene in1 kg fermented substrate supplemented with glucose.Under the conditions employed in this work,it
was able to obtain higher concentration of carotenoids,despite employing other carotenoid-producing microorganisms , and
the different concentrations of inductors can also be caused by using other microorganism.