Reach Us +44-7480-022449

Abstract

Bactericidal Activity of Some Lichen Secondary Compounds of Cladonia ochrochlora, Parmotrema nilgherrensis & Parmotrema sancti-angelii

In the present study, bactericidal potential of some lichen secondary compounds has been presented. Three lichen species namely Cladonia ochrochlora, Parmotrema nilgherrensis and Parmotrema sancti-angelii were successively fractionated in various organic solvents nhexane, ethyl acetate, acetone and methanol. The ethyl acetate fraction (10 μg/ml) of these lichen species showed promised bactericidal activity and the order of the activity of lichen species were found as P. nilgherrensis > P. sanctiangelii > C. ochrochlora. Seven lichen secondary compounds alectoronic acid, atranorin, $-collatolic acid, fumarprotocetraric acid, hypoprotocetraric acid, lecanoric acid and protocetraric acid isolated from ethyl acetate fraction of above lichen species demonstrated moderate to strong bactericidal activity with low MIC value; alectoronic acid showed MIC 21.9 μg to 162.1 μg/ml, atranorin (5 μg - 70.7 μg/ml), $-collatolic acid (8.6 μg - 245 μg/ml), fumarprotocetraric acid (24 μg - 227.3 μg/ml), hypoprotocetraric acid (12.2 μg - 278.5 μg/ml), lecanoric acid (24.6 μg - 591.7 μg/ml), protocetraric acid (18.7 μg - 740.7 μg/ml). These secondary compounds were found most effective to kill microorganisms within a period of 0 hrs to 6 hrs incubation as evident from the kinetic time kill assay study. As far as the stability of the lichen compounds for the observed activity, it was found that these compounds were stable at 4oC without loosing their bactericidal potential.


Author(s): VERMA NEERAJ, BEHERA BC, PARIZADEH H, SHARMA BO

Abstract | Full-Text | PDF

Share this  Facebook  Twitter  LinkedIn  Google+
30+ Million Readerbase
Flyer image
Abstracted/Indexed in
  • Chemical Abstracts Service (CAS)
  • Index Copernicus
  • Google Scholar
  • Genamics JournalSeek
  • China National Knowledge Infrastructure (CNKI)
  • CiteFactor
  • Scimago
  • Directory of Research Journal Indexing (DRJI)
  • WorldCat
  • Publons
  • MIAR
  • ResearchGate
  • University Grants Commission
  • Secret Search Engine Labs