Table 2. Comparison of the costs between YSM and YPD medium for S. cerevisiae mass culture

Component	YSM		YPD
	Conc. (%)	Cost (￦)	Conc. (%)	Cost (￦)
Soytone	0.5	125,000	-	800,000
Peptone	-	-	2	-
Dextrose	1	24,000	2	48,000
Yeast extract	0.5	80,000	1	160,000
TOTAL	229,000/ton		1,008,000/ton