Ziziphora clinopodioides Essential Oil and Nisin as Potential Antimicrobial Agents against Escherichia coli O157:H7 in Doogh (Iranian Yoghurt Drink)

Table 3

Acceptability scores (odour and flavour) of Doogh samples for different treatments.

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	10 ± 0.0^a	10 ± 0.0^a	9.5 ± 0.0^a	10 ± 0.0^a	10 ± 0.0^a	10 ± 0.0^a	10 ± 0.0^a	9.4 ± 0.0^a	9.5 ± 0.0^a
1	10 ± 0.0^a	10 ± 0.0^a	9.5 ± 0.0^a	10 ± 0.0^a	10 ± 0.0^a	10 ± 0.0^a	10 ± 0.0^a	9.5 ± 0.0^a	9.5 ± 0.0^a
3	7.0 ± 0.7^b	9.0 ± 0.2^b	8.6 ± 0.2^b	9.0 ± 0.0^b	9.0 ± 0.0^b	9.0 ± 0.1^b	9.2 ± 0.2^b	8.6 ± 0.1^b	8.5 ± 0.0^b
5	5.1 ± 0.1^c	8.1 ± 0.3^c	6.9 ± 0.3^c	8.1 ± 0.1^c	8.0 ± 0.2^c	8.0 ± 0.2^c	8.1 ± 0.1^c	6.9 ± 0.1^c	7.0 ± 0.2^c
7	4.5 ± 0.1^c	7.1 ± 0.0^d	6.7 ± 0.1^c	7.3 ± 0.1^d	7.1 ± 0.1^d	7.1 ± 0.3^d	7.2 ± 0.3^d	6.5 ± 0.2^c	6.5 ± 0.1^d
9	3.3 ± 0.1^d	6.9 ± 0.0	5.0 ± 0.1^d	6.9 ± 0.0^d	6.9 ± 0.0^d	6.7 ± 0.1^d	6.8 ± 0.3^d	5.1 ± 0.2^d	5.2 ± 0.0

Means with different lowercase letters in the same column are significantly different ().