Bio-guided bioactive profiling and HPLC-DAD fingerprinting of Ukrainian saffron (Crocus sativus stigmas): moving from correlation toward causation

Table 2 Precision and repeatability of the quantified compounds

Compound		Concentrate (μg/mL)	Precision				Repeatability
			Intra-Day (n = 3)		Inter-Day (n = 3)		Recovery (%)	RSD (%)
			RSD (%)	Accuracy (%)	RSD (%)	Accuracy (%)	Recovery (%)	RSD (%)
1	Caffeic acid	11.49	1.05	102.02	0.52	98.49	100.01	0.46
		45.96	1.08	98.78	0.67	99.73	99.39	0.99
		91.92	0.64	100.35	0.95	98.17	100.17	0.37
2	Ferulic acid	7.06	0.68	100.22	0.90	98.29	99.11	0.69
		28.25	0.93	98.20	0.29	99.31	99.60	0.57
		56.5	1.22	100.24	0.46	98.28	100.12	0.49
3	Rutin	2.53	1.26	100.35	0.62	100.15	100.18	0.55
		10.12	1.29	101.12	0.80	99.21	100.65	0.92
		20.24	0.76	99.56	1.14	100.94	99.78	0.31
4	Crocin	1.23	0.87	102.5	0.80	101.36	101.07	0.85
		18.4	1.25	99.19	0.91	100.37	98.99	1.06
		73.6	1.22	98.97	0.81	100.27	100.29	0.98
5	Apigenin	4	0.74	100.75	0.57	98.76	100.56	0.79
		16	0.89	100.89	0.29	98.62	98.96	0.71
		32	0.88	100.70	0.70	98.03	99.80	1.02
6	Safranal	1.33	0.57	101.53	0.67	101.07	100.27	0.65
		10.64	0.78	98.68	0.53	99.14	99.58	0.77
		42.56	1.02	100.47	0.86	100.12	99.14	1.04
7	Gallic acid	7.65	0.57	99.81	0.75	101.37	101.07	0.65
		30.35	0.78	99.56	0.24	102.14	99.69	0.56
		61.20	1.02	101.53	0.38	101.32	100.09	0.94
8	Chlorogenic acid	5.75	1.31	101.12	0.38	98.40	100.69	0.86
		23	0.42	99.08	0.73	99.43	99.58	1.05
		46	0.96	100.27	0.48	98.24	101.91	0.97