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Neha Singh1,2*, Khushboo Bhange3, Nikita Sherwani2,Vibhuti Rai1
1.Department of Microbiology, Pt. Ravishankar Shukla University, Raipur, 492001, India
2.Virology Lab, Department of Microbiology, Pandit Jawahar Lal Nehru Memorial Medical College, Raipur, Chhattisgarh. 492001, India
3.Department of Biochemistry, Pandit Jawahar Lal Nehru Memorial Medical College, Raipur,Chhattisgarh. 492001, India
Ind.J.Applied.Microbiol. 2022 .24(1) : 9-20
Actinomycetes due to their unique repertoire of antimicrobial secondary metabolites can be a
good source to control human pathogens. In our research plan, soil samples were collected from
Bhilai, India. The strains were isolated using yeast extract-malt extract agar medium and
identified based on their morphological, physiological, and biochemical characteristics. The
antifungal activity of isolates was examined by the perpendicular streak plate as well as the agar
well diffusion method. Out of 14 isolates, only 4 isolates (28.5%) showed antifungal activity.
Further, one isolate showed the highest antifungal activity and was identified as Streptomyces
antibioticus A8 based on PIB-Win software and the identification score was 0.99. Antifungal
activity of new isolate Streptomyces antibioticus A8 against the T. rubrum MTCC 296, with a
zone of inhibition 28±0.0 mm, whereas minimum activity was recorded against A. niger
MTCC 872 with the zone of inhibition 9±0.0 mm. antifungal activity against C.albicans
ATCC 10231, C.albicans ATCC 90028, C. albicans ATCC 24433, C.albicans MTCC 183,
C.tropicalis MTCC 184, A.alternata MTCC 1779 was recorded as 20±0.0mm, 17±0.0 mm, 17±0.0
mm, 15±0.5 mm, 14±0.0 mm and 11±0.0 mm respectively by agar well diffusion method.
Further, discovering new antimicrobial-producingmicrobes probably will be helpful for
uncovering novel therapeutic agents against a broad range of pathogenic organisms.
Keywords: Streptomyces sp., Screening, Antifungal activity, Pathogens
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