title: Antibacterial activity of resin rich plant extracts.
abstract: BACKGROUND
  The in vitro antibacterial activity of resin rich methanolic extracts (RRMEs) of Commiphora myrrha, Operculina turpethum, and Pinus roxburghii.
  
  
  METHODS
  Different concentration were studied by agar-well diffusion method against Gram-positive (Staphylococcus aureus, Bacillus subtilis, Micrococcus luteus, Enterococcus faecalis) and Gram-negative bacterial strains (Escherichia coli, Pseudomonas aeruginosa, Salmonella typhi, Shigella dysenteriae).
  
  
  RESULTS
  Among all the bacterial strains tested, E. faecalis was most sensitive and S. typhi was resistant to C. myrrha and P. roxburghii. The extracts of O. turpethum were active against all tested strains in which B. subtilis and S. aureus were the most sensitive.
  
  
  CONCLUSIONS
  This suggested that the antibacterial activity of RRMEs of O. turpethum was more than C. myrrha and P. roxburghii. This probably explains the potential of these plants against a number of infections caused by bacterial strains tested.
authors.affiliation: Department of Pharmacy, Kalka Institute for Research and Advanced Studies, Meerut, Uttar Pradesh, India.
authors.forename: Mohd
authors.initials: M
authors.lastname: Shuaib
authors.forename: Abuzer
authors.initials: A
authors.lastname: Ali
authors.forename: Mohd
authors.initials: M
authors.lastname: Ali
authors.forename: Bibhu Prasad
authors.initials: BP
authors.lastname: Panda
authors.forename: Mohd Imtiyaz
authors.initials: MI
authors.lastname: Ahmad
keywords: Antibacterial drugs; Commiphora myrrha; Operculina turpethum; Pinus roxburghii; glycosidic resins; oleo-gum-resins; oleo-resins