Microwave Assisted Essential Oil Analysis and Antimicrobial Activity of M. alpestris subsp. alpestris

Abstract

The present work describes the chemical composition and antimicrobial activity of the essential

oil of

Myosotis alpestris F.W. Schmidt subsp. alpestris (Boraginaceae). The essential oil wasn-nonanal (11.8 %), decanal (10.8 %), noctanalo-cymene (3.9 %), tetradecanal (3.7 %),β-farnesene (2.0 %). The isolated essential oils of M. alpestris subsp.

alpestris

pseudotuberculosis

was tested for antimicrobial activity against the bacteria Escherichia coli, Yersinia, Pseudomonas aeruginosa, Staphylococcus aureus, Enterococcus faecalis,

Listeria monocytogenes

albicans

1000 μg/mL and they showed only antibacterial activity against fungus bacteria.

, Bacillus cereus, Mycobacterium smegmatis and the fungus Candidaand Saccharomyces cerevisiae at maximum essential oil concentration in hexane of

obtained from all parts of the plant by microwave distillation and analyzed by GC-FID and GCMS.

Forty-seven components representing 88.2 % of the total oil were characterized and the

main components of this species were found to be

(10.7 %), hexahydrofanesyl acetone (6.6 %),

eicosanol (2.2 %) and E-