Sample time (h)

Positive Control

Sample 1

Sample 2

Average of 2 samples

Percentage variation respect to the positive control

Concentration of microorganism with the extract

0

8.20 × 106

4.25 × 106

6.20 × 106

5.23 × 106

−36.22%

24

1.68 × 108

8.80 × 107

6.76 × 107

7.78 × 107

−53.69%

48

1.80 × 107

1.40 × 106

1.84 × 106

1.62 × 106

−91.00%

Addition of extract on biofilm formed

0

8.65 × 107

5.50 × 107

4.70 × 107

5.10 × 107

−41.04%

24

8.05 × 108

4.45 × 107

2.75 × 107

3.60 × 107

−95.53%