Effect of Citrus Byproducts on Survival of O157:H7 and Non-O157 Escherichia coli Serogroups within In Vitro Bovine Ruminal Microbial Fermentations
Table 2
Least squares means for growth of STEC O26:H11, O103:H8, O111:H8, O145:H28, O157:H7, and O157:H7 within bovine mixed rumen microorganisms fluid medium, supplemented with 0%, 5%, 10%, and 20% pelleted citrus by-products (CBPs).
CBP
Time (h)
E. coli serotype (Log10 CFU/mL)
O26:H11
O103:H8
O111:H8
O145:H28
O157:H7
O157:H7
0 h
9.27x
7.01x
8.47x
9.61
8.48
6.46
2 h
8.08y
7.01x
9.01xy
9.48
8.24
6.27
0%
4 h
9.45x
8.64y
8.43x
9.67
8.79
6.26
6 h
9.64x
8.77y
9.48y
9.50
9.01
6.51
Δa
0.37
1.76
1.01
−0.11
0.53
0.05
0 h
9.27xy
8.21
8.40xy
9.51
9.23x
6.07
2 h
8.71x
8.26
8.93x
9.60
7.94y
5.92
5%
4 h
7.29z
7.93
7.98y
9.59
7.96y
6.23
6 h
8.71y
8.28
8.77x
9.69
8.93x
5.97
−0.56
0.07
0.37
0.18
−0.3
−0.1
0 h
9.07xz
8.76
8.76xy
8.98
8.73xy
6.83
2 h
8.43xy
8.50
9.03xy
9.01
8.73xy
6.94
10%
4 h
7.90y
8.37
8.66x
9.55
8.40xy
6.64
6 h
8.59z
8.07
9.73y
9.71
9.20y
6.68
−0.48
−0.69
0.97
0.73
0.47
−0.15
0 h
9.47x
8.52x
9.03
9.29x
8.00x
6.78
2 h
8.98x
8.51x
8.92
9.79xy
8.00y
6.76
20%
4 h
7.69y
8.57x
9.09
8.95y
8.71xy
6.76
6 h
9.54x
7.43y
9.46
9.48xy
9.05y
7.13
−0.07
−1.09
−0.43
0.19
1.05
0.35
aChange in concentration between 0 h and 6 h.
x,y,zLsmeans within a column, within a treatment, without a common subscript are different if .