Effect of Citrus Byproducts on Survival of O157:H7 and Non-O157 Escherichia coli Serogroups within In Vitro Bovine Ruminal Microbial Fermentations
Table 1
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% powdered 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
7.55
7.11
6.93
7.55
6.03v
6.46
2 h
7.68
7.05
6.70
7.58
6.91w
7.00
0%
4 h
7.60
6.81
6.92
8.06
6.91w
7.19
6 h
7.73
6.65
7.07
7.83
7.24w
6.98
0.18
−0.046
0.14
0.28
1.21
0.52
0 h
7.40
7.34y
7.31v
7.57
6.73
6.63
2 h
7.47
6.86yz
7.06v
7.64
6.65
6.41
5%
4 h
7.43
6.95yz
5.85w
7.80
6.77
7.09
6 h
7.59
6.55z
7.22v
7.80
7.02
6.74
0.23
−0.59
0.61
−0.1
0.15
−2.63
0 h
7.43
7.28
6.64
7.73
6.83
6.82vw
2 h
7.43
6.90
7.33
7.56
7.22
6.18w
10%
4 h
7.36
6.99
7.18
7.64
6.96
7.13v
6 h
7.66
6.69
7.25
7.63
6.98
4.19x
0.07
−0.47
−0.32
0.06
−0.03
−5.04
0 h
7.12v
7.13
7.02
7.60
7.03
7.03v
20%
2 h
7.54v
7.33
6.78
7.52
6.94
6.53v
4 h
5.96w
7.07
6.65
7.44
7.30
7.34v
6 h
7.19v
6.66
6.70
7.66
7.00
1.99w
aChange in concentration between 0 h and 6 h.
v,w,xLsmeans within a column, within a treatment, without a common subscript are different if .
y,zLsmeans within a column, within a treatment, without a common subscript tend to be different if .