表3.

本方法与文献报道的比较

No.	Sample extraction				HPLC separation		Harmful solvent	Number of reference compound	Ref.
	Method	Solvent	Time/min		Mobile phase	Time/min
1	RE	50 mL methanol	60		20 mL acetonitrile-0.1% (v/v) phosphoric acid aqueous solution	20	50.0 mL methanol and 1.6 mL acetonitrile	2	[1]
2	UE	24 mL 94% (v/v) methanol aqueous solution	8.5		50.4 mL methanol-0.1% (v/v) formic acid aqueous solution	63	42.6 mL methanol	2	[10]
3	RE	50 mL methanol	60		60 mL acetonitrile-0.1% (v/v) phosphoric acid aqueous solution	60	50.0 mL methanol and 7.2 mL acetonitrile	2	[11]
4	UE	10 mL synthesized DES containing 20% (v/v) water	30		12.5 mL methanol-0.1% (v/v) formic acid aqueous solution	25	3.8 mL methanol	2	[12]
5	UE	10 mL 25% (v/v) ethanol aqueous solution	5		8.25 mL acetonitrile-0.1% (v/v) formic acid aqueous solution	5.5	0.5 mL acetonitrile	1	this method

HPLC separation time was the end time of chromatogram in literature. RE: reflux extraction; UE: ultrasonic extraction; DES: deep eutectic solvent.