Table 2.

Identification of significant changed metabolites from four kinds of P-PM compared with R-PM for 18 h^a (the first) and 36 h^b (the second).

Comp	Compounds	W vs. R	YRW vs. R	BD vs. R	BY vs. R
2	377.0851	—a↓b	↓↓	—↓	↓↓
4	Gluconic acid	↑↑	↑↑	↑↑	↑↑
7	215.0326	↑↑	↑↑	—↑	↑↑
16	379.0820	—↓	—↓	—↓	—↓
17	404.1042	↓↓	↓↓	↓↓	—↓
18	Sucrose	↓↓	↓↓	↓↓	↓↓
26	Malic acid	↑↑	↑↑	↑↑	↑↑
30	191.0188	——	—↑	——	↑↑
34	Isomer of sucrose	↓↓	↓↓	↓↓	↓↓
35	377.0851	—↓	↓↓	—↓	↓↓
36	Isomer of gallic acid	↑↑	↑↑	—↑	↑↑
37	Gallic acid	↑↑	↑↑	—↑	↑↑
49	Catechin	↓↓	↓↓	—↓	↓↓
50	121.0282	——	—↑	——	—↑
63	TSG	↑↑	↑↑	↑—	↑↑
70	Tetrahydroxystilbene-O-(galloyl)-glucopyranoside	—↓	↓↓	—↓	↓—
77	Apigenin-7-O-glucoside	↓↓	↓↓	↓↓	↓↓
82	Emodin-8-O-β-D-hexose-sulfate	↓↓	↓↓	↓↓	↓↓
83	Torachrysone-O-hexose	↓↓	↓↓	↓↓	↓↓
86	408.1379	↓—	↓—	↓—	↓—
87	Emodin-8-O-glucoside	↓↓	↓↓	↓↓	↓↓
89	Aloe-emodin-8-O-(6’-O-acetyl)-glucoside	↓↓	↓↓	↓↓	↓↓
90	Emodin-8-O-(6’-O-carboxyacetyl)-β-D-glucoside	↓↓	↓↓	↓↓	↓↓
92	Apigenin	↓↓	↓↓	↓↓	↓↓
96	481.0906	↓↓	↓↓	↓↓	↓↓
102	Aurantio-obtusin	↓↓	↓↓	↓↓	↓↓
111	Malonyl-substitution of dianthrone glycoside	—↑	—↑	↑—	—↑
118	431.8842	↑↑	↑↑	↑↑	↑↑
121	Isomer of kaempferol	↑↑	↑↑	↑↑	↑↑
125	233.1540	——	——	——	↑—
129	Emodin (10/10’) physcion dianthrone glycoside	↓—	——	↓—	↓—
136	9-Octadecadienoic acid (9Z)	↓↑	↓—	↓↑	↓—

↑: means the relative contents increased significantly; ↓: means the relative contents decreased significantly; —: means the relative contents didn’t change significantly.