Chemometric Analyses for the Characterization of Raw and Stir-Frying Processed Drynariae Rhizoma Based on HPLC Fingerprints

Table 2

Regression equation, linear range, correlation coefficients (r), precision, repeatability, stability, and recovery of naringin, neoeriocitrin, and 5-HMF (n = 6).

Compounds	Naringin	Neoeriocitrin	5-HMF
Regression equation	y = 1.69 × 10^3x − 1.75 × 10^4	y = 1.74 × 10^7x + 6.27 × 10^4	y = 2.60 × 10^6x − 7.81 × 10^3
Linear range (μg·mL^−1)	10∼1000	5.8∼580	2.4–36
	0.9999	0.9997	0.9999
Precision RSD (%)	0.78	0.99	0.88
Repeatability RSD (%)	1.60	1.24	1.12
Stability RSD (%)	0.52	0.32	0.36
Recovery (%)	99.21∼103.69	97.08∼101.24	98.05∼102.02