Electronic Journal of Biotechnology ISSN: 0717-3458
  © 2007 by Universidad Católica de Valparaíso -- Chile
Vol. 9 No. 3, Issue of April 15, 2006
 


Table 3. Inhibitory effect of 7 mg GAE/ml of skin extracts from Royal Gala and Granny Smithapples against bacterial pathogens.

Extracts

E coli

E coli
ATCC
25922

E coli
ATCC
35218

S. aureus
ATCC
25923

S. aureus
ATCC
29213

P. aeruginosa
ATCC
27853

E. faecalis
ATCC
29212

L. monocytogenes

Granny Smith

A
B
C

3.0*
-
-

4.0
2.0
-

3.5
-
-

4.0
-
-

4.5
-
-

4.0
-
1

5.0
-
-

1.0
-
-

Royal Gala

A
B
C

-
-
-

-
-
1.0

-
-
-

2.0
1.0
-

3.0
2.0
2.0

2.5
1.0
3.0

2.5
2.0
1.0

-
2.0
1.0

Inhibition zone average

0.5

1.2

0.6

1.2

1.9

1.9

1.7

0.7

Control (+)

16

20

11

19

18

15

36

34

A: acetone: water: acetic acid, B: ethyl acetate: methanol: water, C: ethanol: water. Control (+): 1
mg/ml Chloramphenicol. Control (-): clarified extracts.
(*) Diameter of inhibition zone in mm. Relative Standard Deviation (RSD) ≤ 0.5 mm.


Supported by UNESCO / MIRCEN network