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Chemical and Biological Technologies in Agriculture

Table 4 Antimicrobial activity of methanolic extract of Chara vulgaris, Cladophora glomerata and Spirogyra crassa

From: Investigation of important biochemical compounds from selected freshwater macroalgae and their role in agriculture

Bacillus subtilis (G  +ve)

Staphylococcus aureus (G  +ve)

Sample

Concentration (ppm)

Concentration (ppm)

500

1000

1500

500

1000

1500

C. vulgaris

0

11.73 ± 0.25

13.17 ± 0.76

10.4 ± 0.2

12.1 ± 0.36

15.93 ± 0.21

C. glomerata

17.33 ± 0.15

19.03 ± 0.31

22.17 ± 0.21

0

10.33 ± 0.15

13.97 ± 0.57

S. crassa

15.17 ± 0.21

17.17 ± 0.35

23.17 ± 0.31

10.1 ± 0.1

11.77 ± 0.21

14.97 ± 0.15

Augmentin

32.07 ± 0.21

32.93 ± 0.57

33.17 ± 

29.33 ± 0.70

32.83 ± 0.21

32.87 ± 0.23

Xanthomonas compestris (G −ve)

Ralastonia solanacerum (G −ve)

 

Concentration (ppm)

Concentration (ppm)

500

1000

1500

500

1000

1500

C. vulgaris

–

10.83 ± 0.76

13.17 ± 0.76

–

11.17 ± 0.29

11.5 ± 0.5

C. glomerata

17.2 ± 0.2

20.1 ± 0.2

24.87 ± 0.25

–

11.73 ± 0.38

13.57 ± 0.51

S. crassa

13.23 ± 0.15

17.3 ± 0.4

21 ± 0.4

10.1 ± 0.1

12.37 ± 0.42

11.17 ± 0.58

Augmentin/+  C

33.1 ± 0.1

33.03 ± 0.30

33.1 ± 0.1

30.07 ± 0.21

30.83 ± 0.91

33.17 ± 0.21

  1. The values show the zone of inhibition in millimeters, as detailed in the materials and methods. Augmentin was used as a standard drug, while DMSO was used as a negative control
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