Table 1.

Compositions and their product ions in HQHG.

No	Name	RT (min)	Formula	Ion source model	Observed MS1 (m/z)	MS2 (m/z)	Source	Reference
1	Betaine	1.35	C5H11NO2	[M-H]+	118.0865	59.07368, 58.06586	A	[23]
2	L-aspartic acid	1.49	C4H7NO4	[M-H]-	132.0294	115.00281, 88.03943, 71.01283	B	[24]
3	Proline	1.62	C5H9NO2	[M-H]+	116.0711	70.06579	B	[24]
4	L-pyroglutamic acid	1.91	C5H7NO3	[M-H]+	130.0502	130.05005, 84.04498	C	[25]
5	DL-leucine	2.04	C6H13NO2	[M-H]-	130.0867	88.03941, 86.03180	B	[24]
6	Adenosine	2.48	C10H13N5O4	[M-H]+	268.1043	136.06187, 119.03543	C	[25]
7	L-phenylalanine	3.74	C9H11NO2	[M-H]-	164.0712	147.04443, 120.04465, 72.00810	B	[24]
8	Kukoamine A	6.86	C28H42N4O6	[M-H]+	531.3178	352.60428, 293.18582, 222.11252, 165.05467, 123.04430	A	[26]
9	Chlorogenic acid	8.01	C16H18O9	[M-H]+	355.1028	193.04965, 163.03859, 133.02855	A	[4]
10	Caffeic acid	8.56	C9H8O4	[M-H]-	179.0346	135.04431, 134.03650, 89.02342	A	[27]
11	2-Hydroxycinnamic acid	11.17	C9H8O3	[M-H]+	165.0549	147.04402, 119.04935, 91.05470	C	[25]
12	Scopoletin	11.80	C10H8O4	[M-H]+	193.0499	178.02615, 137.05978, 133.02849	A	[23]
13	Tryptophan	12.58	C11H12N2O2	[M-H]-	203.0824	159.09200, 142.06537, 116.04964	A/B/C	[24, 27–30]
14	Ferulic acid	12.63	C10H10O4	[M-H]+	195.0657	177.05472, 149.05984, 145.02849	A	[26, 27]
15	Salicylic acid	15.07	C7H6O3	[M-H]-	137.0238	93.03357	C	[28]
16	Quercetin-3β-D-glucoside	15.54	C21H20O12	[M-H]+	465.1032	303.05008, 257.04443, 229.04915, 85.02902	A	[27]
17	Rutin	15.54	C27H30O16	[M-H]-	609.1462	300.02756, 271.02493, 255.02986	A/C	[27, 28]
18	Tianshic acid	27.66	C18H34O5	[M-H]-	329.2333	171.10193, 139.11200, 127.11195	C	[28]
19	Eleostearic acid	29.46	C18H30O2	[M-H]+	279.2318	149.02348, 123.11689, 109.10156, 95.08602	A	[26]

A: Lycium barbarum; B: Trametes robiniophila; C: Polygonatum.