Table 1
HPLC conditions for the analysis of phenolic compounds

Instrument	Conditions
Column	SunfireTM C18 5.0 μm, 4.6 mm×250 mm
Column temp.	40℃
Mobile phase (Gradient)	Time (min)	Solvent A1)	Solvent B2)
	0	8	92
	23	8	92
	26	15	85
	36	30	70
	40	45	55
	43	45	55
	45	8	92
	53	8	92
Detector	Waters 996 Photodiode Array Detector (280 nm)
Flow rate	1.0 mL/min
Injection volume	10 μL
Run time	53 min

Solvent A, Acetonitrile.
Solvent B, 0.5% H3PO4-Water.