The invention provides a culture medium of
euglena gracilis, which is added with different
inorganic nutrient substances, in particular to
nutrient components such as a mixture of
ammonium chloride and
urea, and the like. In an open culture process, the culture medium not only overcomes the defects that
euglena gracilis is easy to pollute by microorganisms and
bacteria so as to pollute the environment, and the like in the prior art, but also can ensure that the
euglena gracilis quickly utilizes the
inorganic nutrient components to accelerate
cell division under the condition of not adding an organic
carbon source. The culture medium of the invention shortens the grown cycle of the
euglena gracilis by 2-5 days compared with a conventional culture medium and has a
biomass accumulation being 1-1.5 times higher than the conventional culture medium. The culture medium removes the organic
carbon source of the conventional culture medium and supplements the
carbon source in the mode of CO2, thus the culture medium not only can achieve the purpose of avoiding
microorganism pollution, but also can increase the capacity of absorbing the CO2 of the
euglena gracilis. In the process of the
mass production and culture of the
euglena gracilis, the culture medium can adsorb a large amount of industrial CO2
waste gas, thereby having important meaning to energy saving, emission reduction and
environmental protection.