Skip to main content
. 2019 Jan 16;24(2):314. doi: 10.3390/molecules24020314

Table 9.

Antimicrobial activity of amino acid xanthone derivatives.

graphic file with name molecules-24-00314-i062.jpg

No. Structure/R Antimicrobial Activity (Inhibitory Growth Zones/MIC)
12S graphic file with name molecules-24-00314-i063.jpg S. aureus (6 mm-25 µg/mL); B. substilis (8 mm-25 µg/mL); E. coli (17 mm-25 µg/mL); K. pneumonia (6 mm-25 µg/mL)
13S graphic file with name molecules-24-00314-i064.jpg S. aureus (10 mm-25µg/mL); B. substilis (7 mm-25 µg/mL); E. coli (8 mm-25 µg/mL); K. pneumonia (5 mm-25 µg/mL)
14S graphic file with name molecules-24-00314-i065.jpg S. aureus (7 mm-25 µg/mL); B. substilis (11 mm-25 µg/mL); E. coli (4 mm-25 µg/mL); K. pneumonia (8 mm-25 µg/mL)
15S graphic file with name molecules-24-00314-i066.jpg S. aureus (4 mm-25 µg/mL); B. substilis (7 mm-25 µg/mL); E. coli (8 mm-25 µg/mL); K. pneumonia (7 mm-25 µg/mL)
16S graphic file with name molecules-24-00314-i067.jpg S. aureus (18 mm-25 µg/mL); B. substilis (17 mm-25 µg/mL); E. coli (16 mm-25 µg/mL); K. pneumonia (20 mm-25 µg/mL)
17S graphic file with name molecules-24-00314-i068.jpg S. aureus (20 mm-25 µg/mL); B. substilis (20 mm-25 µg/mL); E. coli (20 mm-25 µg/mL); K. pneumonia (18 mm-25 µg/mL)
18S graphic file with name molecules-24-00314-i069.jpg S. aureus (22 mm-25 µg/mL); B. substilis (23 mm-25 µg/mL); E. coli (24 mm-25 µg/mL); K. pneumonia (22 mm-25 µg/mL)
19S graphic file with name molecules-24-00314-i070.jpg S. aureus (20 mm-25 µg/mL); B. substilis (20mm-25 µg/mL); E. coli (18 mm-25 µg/mL); K. pneumonia (18 mm-25 µg/mL)
20S graphic file with name molecules-24-00314-i071.jpg S. aureus (15 mm-25 µg/mL); B. substilis (13 mm-25 µg/mL); E. coli (16 mm-25 µg/mL); K. pneumonia (16 mm-25 µg/mL)
21S graphic file with name molecules-24-00314-i072.jpg S. aureus (17mm-25 µg/mL); B. substilis (15mm-25 µg/mL); E. coli (17 mm-25 µg/mL); K. pneumonia (13 mm-25 µg/mL)
22S graphic file with name molecules-24-00314-i073.jpg S. aureus (9 mm-25 µg/mL); B. substilis (11 mm-25 µg/mL); E. coli (15 mm-25 µg/mL); K. pneumonia (8 mm-25 µg/mL)
23S graphic file with name molecules-24-00314-i074.jpg S. aureus (14 mm-25 µg/mL); B. substilis (10 mm-25 µg/mL); E. coli (11 mm-25 µg/mL); K. pneumonia (16 mm-25 µg/mL)
24S graphic file with name molecules-24-00314-i075.jpg S. aureus (9 mm-25 µg/mL); B. substilis (13 mm-25 µg/mL); E. coli (8 mm-25 µg/mL); K. pneumonia (10 mm-25 µg/mL)
25S graphic file with name molecules-24-00314-i076.jpg S. aureus (7 mm-25 µg/mL); B. substilis (11 mm-25 µg/mL); E. coli (10 mm-25 µg/mL); K. pneumonia (8 mm-25 µg/mL)
26S graphic file with name molecules-24-00314-i077.jpg S. aureus (22 mm - 25 µg/mL); B. substilis (22 mm - 25 µg/mL); E. coli (20 mm - 25 µg/mL); K. pneumonia (23 mm - 25 µg/mL)
27S graphic file with name molecules-24-00314-i078.jpg S. aureus (23 mm-25 µg/mL); B. substilis (23 mm-25 µg/mL); E. coli (21 mm-25 µg/mL); K. pneumonia (21 mm-25 µg/mL)
28S graphic file with name molecules-24-00314-i079.jpg S. aureus (24 mm-25 µg/mL); B. substilis (26 mm-25 µg/mL); E. coli (26 mm-25 µg/mL); K. pneumonia (23 mm-25 µg/mL)
29S graphic file with name molecules-24-00314-i080.jpg S. aureus (20 mm-25 µg/mL); B. substilis (19 mm-25 µg/mL); E. coli (19 mm-25 µg/mL); K. pneumonia (15 mm-25 µg/mL)
30S graphic file with name molecules-24-00314-i081.jpg S. aureus (17 mm-25 µg/mL); B. substilis (15 mm-25 µg/mL); E. coli (17 mm-25 µg/mL); K. pneumonia (17 mm-25 µg/mL)
31S graphic file with name molecules-24-00314-i082.jpg S. aureus (20 mm-25 µg/mL); B. substilis (18 mm-25 µg/mL); E. coli (20 mm-25 µg.mL); K. pneumonia (18 mm-25 µg.mL)

The antimicrobial activity was performed in agar well diffusion method, in triplicate, being the results expressed as the mean of the diameter of the inhibition zone in millimeter.