Ziziphora clinopodioides Essential Oil and Nisin as Potential Antimicrobial Agents against Escherichia coli O157:H7 in Doogh (Iranian Yoghurt Drink)
Table 2
Effect of Z. clinopodioides essential oil, nisin, and their combination on E. coli O157:H7 in Doogh stored at 4°C.
Day
Control
Essential oil (%)
Nisin (IU/mL)
Essential oil (%) + nisin (IU/mL)
0.1
0.2
250
500
0.1 + 250
0.1 + 500
0.2 + 250
0.2 + 500
0
5.00 ± 0.00
5.00 ± 0.00
5.00 ± 0.00
5.00 ± 0.00
5.00 ± 0.00
5.00 ± 0.00
5.00 ± 0.00
5.00 ± 0.00
5.00 ± 0.00
1
4.84 ± 0.03
4.51 ± 0.08
4.22 ± 0.00
4.87 ± 0.02
4.79 ± 0.00
4.16 ± 0.01
4.38 ± 0.00
3.98 ± 0.00
3.65 ± 0.02
3
3.72 ± 0.01
3.55 ± 0.03
3.45 ± 0.01
3.70 ± 0.01
3.68 ± 0.03
3.20 ± 0.00
3.55 ± 0.06
2.41 ± 0.01
2.11 ± 0.01
5
2.15 ± 0.02
ND
ND
2.10 ± 0.00
2.09 ± 0.01
ND
ND
ND
ND
7
ND
ND
ND
ND
ND
ND
ND
ND
ND
9
ND
ND
ND
ND
ND
ND
ND
ND
ND
Means with different lowercase letters in the same row are significantly different (). Means with different capital letters in the same column are significantly different (). ND: not detected.
