Actinomycetes are a group of organisms
which have characteristics of both bacteria and fungi,
hence, they are also called as ‘Actinobacter’ and ‘Ray
fungi’. Actinomycetes are known for producing novel
secondary metabolites like enzymes, anti-biotics, anticancerous agents and play major role in recycling of
organic matter. In this present research study,
actinomycetes were isolated from 11 different soil
samples from different places from college campus by
serially diluting and spread plate technique on SCA
media. 22 actinomycete isolates were obtained, which
were identified by gram staining and biochemical tests
using Bergey’s manual. The secondary metabolites of the
isolated actinomycetes were screened for anti-microbial
activity against 8 clinical pathogens by perpendicular
streak method (primary screening) and agar well
diffusion method (secondary screening). 2 actinomycetes
showed mild anti-microbial activity against Proteus
vulgaris and Staphylococcus aureus. By using lysozyme
method, DNA from selected 8 actinomycetes was isolated
and on study of effect of lysozyme concentration on the
quantity of DNA using 3 isolates and it was found that
.5mg/1ml (15mg/10ml) lysozyme concentration yields
highest amount of DNA. Also RAPD PCR was performed
on isolate number 4 and its DNA was successfully
amplified
Keywords : Actinomycetes, Bergey’s manual, anti-microbial activity, DNA, lysozyme, nanodrop, RAPD PCR