(A) Principal component analysis of raw and roasted hemp seed oil by electronic tongue; (B) Hierarchical cluster analysis of raw and roasted hemp seed oil by electronic tongue. Raw: hemp seed oil extracted with raw hemp seed, 140 ℃_9 min: hemp seed oil extracted with roasted hemp s eed at 140 ℃_9 min, 140 ℃_12 min: hemp seed oil extracted with roasted hemp seed at 140 ℃_12 m in, 160 ℃_6 min: hemp seed oil extracted with roasted hemp seed at 160 ℃_6 min, 160 ℃_12 min: hemp seed oil extracted with roasted hemp seed at 160 ℃_12 min, 180 ℃_6 min: hemp seed oil extracted with ro asted hemp seed at 180 ℃_6 min.