Table 2. Comparing the concentrations of volatile fatty acids in the OLH and OLL groups.

VFAs(mmol/L)	OLH Mean ± S.E	OLL Mean ± S.E	P value
Acetate	39.67±1.77	35.98±2.34	0.778
Propionate	10.14±0.79	7.44±0.47	0.006
Isobutyrate	0.53±0.02	0.47±0.045	0.264
Butyrate	5.16±0.21	4.60±0.45	0.27
Isovalerate	0.69±0.022	0.57±0.078	0.161
Valerate	0.52±0.027	0.49±0.016	0.258
TVFAs	56.70±2.43	49.53±3.20	0.085
Acetate/Propionate	3.91±0.18	4.85±0.16	0.003

VFAs, volatile fatty acids; TVFAs, total volatile fatty acids; S.E: Standard Error; OLH: High group; OLL: Low group