Tangshan Institute of Industrial Technology for Functional Agricultural Products 063000;
Hebei Provincial Innovation and Practice Base for Postdoctors 063000;
Tangshan Food and Drug Comprehensive Testing Center 063000;
Tangshan Academy of Agricultural Sciences 063000;
Tangshan Normal University 063000;
GINGER; CURCUMIN; Supercritical CO_(2); Response surface methodology; Antioxidant activity;