88 , 99 , 100 , 111 Butyrate production shows a decreasing trend from 6 h of fermentation period for AG1 ( Figure 3 ) and AG2 ( Figure 5 ).
2
—
—
The sentences
The fermentation exhibits an increasing trend for acetate production in AG1 and AG2, while FOS has a sudden drop at 24 h after the initial elevation until 12 h.