The Saccharomyces cerevisiae CICC 1001 was cultivated for
15 h (28 ◦C, 150 r min−1) on the PDA medium which had the
same composition of the above PDA nutrient solution; the total
amount of the single bacterium colony number in the medium
was 1.8
×109 COF/mL after cultivation, which showed it was suitable
for inoculation.