Table 2 Effects of Lactobacillus plantarum PA21 biofilm on the planktonic cell viability of food spoilage and pathogenic bacteria at 2 days intervals (means log₁₀ CFU/ml ± SD)

S. enterica

5.75 ± 0.01

6.59 ± 0.05

4.87 ± 0.01

P. fluorescens ATCC 13525

2

nd

nd

A. hydrophila ATCC 7965

4.2 ± 0.02

nd

nd

B. cereus

5.53 ± 0.01

nd

nd

S. enterica ^a

8.95 ± 0.005

8.39 ± 0.04

8.73 ± 0.01

P. fluorescens ATCC 13525^a

8.94 ± 0.03

8.58 ± 0.01

7.88 ± 0.03

A. hydrophila ATCC 7965^a

8.01 ± 0.02

8.88 ± 0.03

8.57 ± 0.04

B. cereus^a

7.80 ± 0.01

7.02 ± 0.02

7.63 ± 0.01