Invitro Antibacterial Activity of Lichens against Oral Microorganism of Herbivorous and Carnivorous Animals

Physcia americana, Parmotrema perlatum, Hypogymnia phylodes, Lepraria ecorticata are the lichens species which was tested for their antibacterial activity against oral microorganisms of both herbivorous and carnivorous animals. The zone of inhibition was found more in the species of Parmotrema perlatum collected from southern zone of Karnataka, Coorg. Whereas other species did not show any positive result against the animal swabs. They were investigated for their grams nature and were found to be gram positive bacilli.