Table 3 Preventive effects of Lactobacillus plantarum PA21 biofilm on the attachment of food spoilage and pathogenic bacteria at 2 days intervals (means log₁₀ CFU/ml ± SD)

S. enterica

5.51 ± 0.02

5.19 ± 0.005

4.58 ± 0.03

P. fluorescens ATCC 13525

4.11 ± 0.01

2. 88 ± 0.03

nd

A. hydrophila ATCC 7965

4.59 ± 0.05

nd

nd

B. cereus

nd

nd

nd

S. enterica ^a

7.46 ± 0.01

7.22 ± 0.03

6.98 ± 0.008

P. fluorescens ATCC 13525^a

5.82 ± 0.03

6.34 ± 0.006

5.94 ± 0.03

A. hydrophila ATCC 7965^a

6.84

7.35 ± 0.03

6.74 ± 0.01

B. cereus^a

5.90 ± 0.02

6.06 ± 0.07

6.14 ± 0.08