Table 3.

Extent of hydrolysis, acidification, and VFAs yields at the end of fermentation

Parameters	OS	SP1	SP2	SP3	OP	SF1	SF2	SF3	OF
Hydrolysis efficiency (%)	49.67 ± 1.67	45.44 ± 1.02	51.17 ± 1.62	56.39 ± 1.53	69.49 ± 1.91	50.35 ± 1.38	48.45 ± 1.82	53.13 ± 1.69	54.01 ± 1.34
Acidification efficiency (%)	14.51 ± 0.53	17.75 ± 0.68	21.25 ± 0.43	26.92 ± 0.46	16.74 ± 0.28	18.23 ± 0.27	20.62 ± 035	23.00 ± 0.64	17.56 ± 0.43
VFAs yield (mg COD/g VS)	132.30 ± 5.43	151.60 ± 6.83	268.40 ± 10.45	343.54 ± 14.63	185.10 ± 7.49	139.67 ± 5.32	217.85 ± 8.47	282.02 ± 6.35	182.52 ± 5.24