. 2020 Oct 26;58(8):3086–3093. doi: 10.1007/s13197-020-04812-9

Table 3.

Average Counts of STEC Serogroups during Synthetic Gastric Fluid Exposure throughout Cold Storage of Experimentally Produced Frankfurters (log₁₀ cfu g^-1 ± SD, results of triplicate trials)

Organism	Days	Minutes of Exposure to SGF
Organism	Days	0	30	60	90
STEC O103	0	5.44 ± 0.41^Ax	4.18 ± 1.10^Bx	4.02 ± 1.27^Bx	4.39 ± 0.07^ABx
	15	5.62 ± 0.21^Ax	3.74 ± 1.5^Bx	4.37 ± 0.46^ABx	4.05 ± 0.39^Bxy
	30	5.43 ± 0.36^Ax	3.89 ± 1.06^Bx	3.36 ± 0.74^Bx	3.22 ± 0.75^Bxyz
	45	4.78 ± 0.21^Axy	3.10 ± 1.08^Bxy	3.46 ± 0.07^Bx	2.73 ± 0.15^Byz
	60	4.12 ± 0.38^Ay	4.27 ± 0.33^Ax	3.70 ± 0.09^Ax	3.38 ± 0.09^Axyz
	75	4.01 ± 0.14^Axy	2.32 ± 0.39^By	ND	1.89 ± 0.12^Bz
STEC O26	0	5.89 ± 0.2^Ax	4.88 ± 0.53^ABx	4.73 ± 0.64^ABxy	4.39 ± 0.34^Bxy
	15	5.16 ± 0.87^Axy	5.19 ± 0.31^Ax	4.97 ± 0.48^Axy	4.98 ± 0.16^Ax
	30	5.25 ± 1.01^Axy	5.02 ± 0.18^Ax	4.76 ± 0.29^Axy	4.99 ± 0.19^Ax
	45	5.09 ± 0.99^Axy	5.04 ± 0.54^Ax	5.07 ± 0.74^Ax	4.89 ± 0.61^Ax
	60	4.61 ± 0.26^Ay	5.04 ± 0.14^Ax	4.87 ± 0.22^Axy	4.87 ± 0.25^Ax
	75	5.17 ± 1.21^Axy	4.08 ± 0.25^ABx	3.58 ± 0.28^By	3.33 ± 0.26^By
STEC O145	0	5.80 ± 0.15^Ax	4.62 ± 0.73^Bx	4.32 ± 0.90^Bx	3.93 ± 1.29^Bx
	15	5.64 ± 0.41^Ax	4.74 ± 1.08^ABx	4.50 ± 1.28^ABx	4.11 ± 1.53^Bx
	30	5.56 ± 0.35^Ax	4.37 ± 1.18^Bx	4.30 ± 1.37^Bx	4.88 ± 0.27^ABx
	45	5.10 ± 0.63^Ax	5.12 ± 0.34^Ax	4.75 ± 0.28^Ax	4.69 ± 0.40^Ax
	60	5.36 ± 0.29^Ax	4.56 ± 0.5^Ax	4.24 ± 0.37^Ax	4.30 ± 0.2^Ax
	75	5.32 ± 0.60^Ax	4.36 ± 0.19^ABx	4.12 ± 0.3^ABx	3.67 ± 0.25^Bx
STEC O157	0	5.71 ± 0.14^Ax	4.62 ± 0.85^ABx	3.77 ± 0.79^Bx	3.94 ± 0.05^Bx
	15	4.80 ± 1.54^Axy	4.17 ± 0.11^ABx	3.50 ± 0.09^Bx	3.22 ± 0.14^Bx
	30	4.74 ± 1.00^Axy	3.38 ± 0.09^Bx	2.77 ± 0.18^Bx	2.85 ± 0.48^Bx
	45	3.97 ± 0.93^Ay	1.84 ± 0.002^By	ND	ND
	60	4.06 ± 1.72^Ay	1.99 ± 0.37^By	ND	ND
	75	4.08 ± 1.61^y	ND	ND	ND

^A^,B,CDifferent letters in the same row indicate statistically significant differences (p < 0.05)

^x,^y,zDifferent letters in the same column indicate statistically significant differences (p < 0.05)

ND non-detected