Abstract:
Extraction of the fruit of Amomum sublatum with 90% ethanol
gave a crude product , which was fractionated over silica gel plates to
afford a chromatographically pure flavonoid- compound I. The
structure of the isolated flavonoid was partially elucidated by spectral
tools (UV and H1NMR) and the following partial structure was
proposed:
Compound I
The aqueous extract of Ammomum sublatum was assessed for
antimicrobial activity against five standard bacteria. It showed
significant activity against the bacterial strains : Pseudomonas
aeruginosa and Bacillus subtilis . It also showed good anticandidal
activity
The oils from Foeniculum vulgae and Psidium guajava were studied
by GC-MS , furthermore the oils have been assessed for antimicrobial
activity. The GC-MS analysis of Foeniculum vulgae oil revealed the
presence of 32 components. Foeniculum vulgae oil showed excellent
activity against Staphylococcus aureus in the concentration range :
O
C CH3
O
O
C CH3
CH3
CH3
V
100-25mg/ml. It also exhibited significant activity against the yeast
Candida albicans at 100mg/ml.
GC-MS analysis of Psidium guajava oil revealed the presence of 30
constituents. The oil showed activity against all test organisms,but it
was partially active against the fungus Candida albicans. Significant
activity against Staphylococcus aureus was observed.
