Table 3. Analysis of variables for regression model of dependent variables on steaming-drying conditions for the nine times steaming-drying cycles of black ginseng.

Regression models	F-value
	Steaming mean time	Drying mean temperature
Brown color intensity	26.37***	37.01***
Ginsenoside Rg3	9.90**	0.75
Benzopyrene	18.24***	1.20

Significant at 10% level,
Significant at 5% level,
Significant at 1% level.