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. 2023 Oct 6;11:e16094. doi: 10.7717/peerj.16094

Table 2. Inhibition zones (cm) resulted by autochthonous lactic acid cultures on Mueller–Hinton agar against the reference strains of sanitary indicators (mean ± standard deviation).

Salmonella enterica serovar Typhimurium ATCC 14028 Staphylococcus aureus ATCC 25923 Escherichia coli ATCC 25922
Autochthonous lactic acid cultures Zone of inhibition (cm) Inhibitory effect (%) Zone of inhibition (cm) Inhibitory effect (%) Zone of inhibition (cm) Inhibitory effect (%)
L. plantarum CNPC001 0.00 ± 0.00a 0.00 ± 0.00a 0.25 ± 0.35b 20.83 ± 29.42a 0.25 ± 0.07ab 50.00 ± 14.14a
L. plantarum CNPC002 0.00 ± 0.00a 0.00 ± 0.00a 0.35 ± 0.21b 27.98 ± 19.36a 0.10 ± 0.14b 20.00 ± 28.28a
L. plantarum CNPC003 0.00 ± 0.00a 0.00 ± 0.00a 0.55 ± 0.78b 10.71 ± 15.15a 0.00 ± 0.00a 0.00 ± 0.00a
L. plantarum CNPC004 0.20 ± 0.00a 16.78 ± 1.97a 0.30 ± 0.00b 23.21 ± 2.53a 0.13 ± 0.18b 25.00 ± 35.36a
L. plantarum CNPC020 0.25 ± 0.07b 20.63 ± 3.46b 0.33 ± 0.18b 24.40 ± 10.94a 0.25 ± 0.07b 50.00 ± 14.14a
L. mucosae CNPC007 0.25 ± 0.06b 20.87 ± 7.76b 0.30 ± 0.00b 23.21 ± 2.530a 0.15 ± 0.21ab 30.00 ± 42.43a
L. rhamnosus EM1107 0.15 ± 021a 12.5 ± 17.68a 0.20 ± 0.00b 19.14 ± 6.86a 0.11 ± 0.15b 22.00 ± 31.11
Positive control (Liquid) 1.00 ± 0.00c 100 1.30 ± 0.14a 100 0.43 ± 0.25b 100
Positive control (Disc) 1.30 ± 0.00c 0.65 ± 0.21b 0.70 ± 0.00a

Note:

a,b,c

Different lowercase letters denote that trials differ significantly P < 0.05 by Fisher’s LSD test (the exact P values are shown in the Data S1).