Advances in Pharmacological and Pharmaceutical Sciences

Research Article

Antimicrobial Potential of Streptomyces spp. Isolated from the Rift Valley Regions of Ethiopia

Table 4

Morphological, physiological, and biochemical characteristics of the test isolates.
Actinomycete isolates
Growth mediaRVE 002RVE004RVE029RVE077RVE116RVE118RVE125RVE129RVE133RVE144RVE165RVE172RVE187RVE193RVE194RVE214RVE217RVE219RVE226RVE227RVE234RVE239RVE247RVE248
ISP 2++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
ISP 3++++++++++++++++++++++++++++++++++++++++++++++++++++++++
ISP 4+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
ISP 5++++++++++++++++++++++++++++++++++++++++
ISP 6++++++++++++++++++++++++++++++++++++++++++++++++++++++++
ISP 7++++++++++++++++++++++++++++++++++++++++++++
SCA+++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Enzyme production                        
Urease++−−−−++−−+−−−++++−−−−++−+−−+
Amylase++++++++++++++++++++++++
Chitinase++++++++−−−+++−−++++++++++++++
Oxidase+−−+++++++++−+++++++++−++++−++−+
Catalase++++++++++++++++++++++++
Caesinase++++++−++++−++++−+++++−+
Nitrate reductase−−++−−++−++−++++−++−−−++−−−−−++++
Gelatin hydrolysis+−++−++++++−+−++−++−+−+−
Citrate utilization++−++−++−++++++−−++++−++
Melanin formation+++−+++++++++++++++++++++++++++−++++−
Optimum pH7.57.57.57887.57.5877.5787.577.57.57.577.587.587
Optimum NaCl2.5552.552.52.5552.552.52.52.52.552.55552.52.555
Optimum T°(°C)253030303025303030302530302525303030303030252530
−, No growth; +, poor growth; ++, moderate growth; +++, abundant growth.