Table 2. The compounds in NTZF were identified by Q-Orbitrap LC-MS/MS.

Peak No.	Compound	Molecular formula	CAS	Content (μg/mL)	Chemical structure
1	Adenosine	C10H13N5O4	58-61-7	4.84
2	Gallic acid	C7H6O5	149-91-7	9.55
3	5-Hydroxymethyl-2-furaldehyde+	C6H6O3	67-47-0	7.68
4	Magnoflorine	C20H24NO4+	2141-09-5	4.16
5	Caffeic acid	C9H8O4	331-39-5	3.18
6	(+)-Catechin	C15H14O6	154-23-4	0.76
7	Chlorogenic acid	C16H18O9	327-97-9	0.52
8	Paeoniflorin	C23H28O11	23180-57-6	150.86
9	Ferulic acid	C10H10O5	1135-24-6	0.93
10	Quercetin	C15H10O7	117-39-5	0.35
11	Isorhamnetin	C16H12O7	480-19-3	0.07
12	Linoleic acid	C18H32O2	60-33-3	2.11