Table 4. Changes in pH, acidity and viable cell count of Toxicodendron vernicifluum extract co-fermented by S. cerevisiae and L. plantarum according to lactose concentration

Lactose content (%)	2^nd Fermentation period (days)	pH	Acidity (%)	Viable cell count (L. plantarum, log CFU/mL)
0	0	4.56±0.04^d1)	0.20±0.03^d	7.44±0.04^b
	1	5.93±0.03^b	0.24±0.06^c	7.75±0.32^a
	3	6.09±0.02^c	0.19±0.01^b	8.25±0.017^a
	5	6.43±0.04^a	0.15±0.01^a	8.01±0.18^a
	7	6.65±0.00^bc	0.12±0.00^a	7.88±0.16^a
2.5	0	4.56±0.04^e	0.13±0.12^d	7.44±0.04^c
	1	4.97±0.00^a	0.93±0.04^c	9.20±0.10^ab
	3	4.81±0.01^d	1.21±0.10^a	9.64±0.68^a
	5	5.02±0.01^c	0.82±0.03^bc	9.27±0.02^b
	7	5.12±0.00^b	0.66±0.06^ab	9.04±0.34^b
5.0	0	4.56±0.04^c	0.13±0.12^d	7.44±0.04^c
	1	4.93±0.01^a	1.01±0.01^c	9.16±0.04^a
	3	4.77±0.01^b	1.45±0.30^a	8.79±0.32^a
	5	4.96±0.00^b	0.97±0.01^bc	8.43±0.40^b
	7	5.03±0.01^b	0.85±0.01^c	9.09±0.31^a

Each value is a mean±SD (n=3). Different letters in the same fermentation period mean significant difference by Duncan’s multiple range test (p<0.05).