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


Table 2. Effect of the apple skin extracts from Royal Gala and Granny Smith varieties against bacterial pathogens.

Extracts

E coli

E coli
ATCC25922

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

6.0*
2.0
-

7.0
4.0
4.0

7.0
-
-

7.0
2.0
-

10.0
3.0
1.0

10
3
4

9
-
-

9
3
-

Royal Gala

A
B
C

-
-
-

4.0
3.0
2.0

-
-
-

3.0
2.0
1.0

4.0
2
1

4
3
-

4
-
-

4
3
-

Inhibition
zone
average

1.3

4.0

1.2

2.5

3.5

4.0

2.2

3.2

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