Table 4. Ct values of Listeria monocytogenes analyzed by real-time PCR on different food matrix

		Inoculation level (CFU/mL)
		0-10	10-50	50-100	100-
SureTect™ kit	Sandwich	19.32±0.87^A,ab	19.87±0.18^A,b	16.80±0.21^B,c	16.92±0.26^B,c
	Sausage	19.79±1.39^AB,ab	23.03±0.55^A,a	22.00±0.27^AB,a	19.87±0.36^AB,b
	Hamburger	19.07±0.51^B,b	20.29±0.03^A,b	19.72±0.17^AB,ab	19.00±0.37^B,b
	Kimbap	21.27±1.67^A,a	18.64±0.38^AB,c	18.19±0.44^AB,b	17.12±0.39^B,c
	Bacon	19.27±0.54^A,b	20.26±1.16^A,b	19.10±0.41^AB,ab	18.99±0.41^B,b
	Salad	20.40±0.11^B,a	19.86±1.40^B,b	20.57±1.96^B,ab	23.01±1.10^A,a
PowerChek™ kit	Sandwich	15.80±1.03^A,bc	13.01±0.89^B,c	14.01±1.27^AB,c	14.56±0.43^AB,b
	Sausage	17.58±1.82^A,a	18.73±0.81^A,a	17.84±0.61^A,a	15.33±0.39^B,b
	Hamburger	15.96±0.69^A,c	15.77±0.55^A,b	15.76±0.14^A,b	14.73±0.54^B,b
	Kimbap	18.43±2.37^A,a	16.07±0.85^AB,b	15.43±0.55^B,b	14.89±0.72^B,b
	Bacon	17.87±1.64^A,a	18.12±2.18^A,a	16.14±1.25^B,ab	15.54±1.25^C,b
	Salad	16.85±0.18^B,b	15.36±0.86^C,b	17.03±1.68^AB,a	18.68±0.78^A,a