Multivariate Statistical Analysis Uncovers Spectrum–Effect Relationship between HPLC Fingerprints and Antioxidant Activity of Saffron

Table 2

The regression equation, R², linear range, and standard errors.

Name	Regression equation	R^2	Linear range (μg/mL)	Standard errors
				Slope	Intercept
Crocin I	y = 95.537 × + 43.146	0.9999	18.92∼302.70	0.12	19.24
Crocin II	y = 139 × − 5.9062	0.9999	6.28∼100.50	0.16	8.51
Picrocrocin	y = 28.282 × − 0.974	0.9999	17.78∼284.40	0.02	2.57