. 2019 Dec 23;29(6):837–844. doi: 10.1007/s10068-019-00717-2

Table 3.

Endogenous metabolites discriminating the probiotics treatment group from the placebo group

Retention time (min)	m/z	Formula	Fold change (probiotics/placebo)	Identity
0.5	[101.0244]−	C₄H₆O₃	0.72	2-Ketobutyric acid
1.7	[207.0775]−	C₁₀H₁₂N₂O₃	0.36	l-Kynurenine
3.3	[162.0550]+	C₉H₇NO₂	0.59	4,6-Dihydroxyquinoline
3.6	[206.0459]−	C₁₀H₉NO₄	0.31	4-(2-Aminophenyl)-2,4-dioxobutanoic acid (DOBA)
10.2	[288.2982]+	C₁₇H₃₄O₂	1.77	Palmitic acid methyl ester (PAME)
11.2	[407.2803]−	C₂₄H₄₀O₅	0.48	Cholic acid
12.1	[320.2647]+	C₁₈H₃₅NO₂	2.26	Palmitoleoyl ethanolamide (PEA)