Antimicrobial potentiality of actinobacteria isolated from two microbiologically unexplored forest ecosystems of Northeast India

Table 1 Actinobacterial isolates obtained from Nameri National Park (NNP) and Panidehing Wildlife Sanctuary (PWS), Assam, India and their antimicrobial activities

Sample collection sites	No. of isolates in different isolation media				Total no. of isolates	No. of isolates showing antimicrobial activity against test pathogens (%)^a,b			Isolates with antimicrobial activity against SA, EC and CA (%)^c	Isolates with antimicrobial activity (≥ 25 mm IZ) against SA, EC and CA (%)^c,d
Sample collection sites	AIA	ISP2	GLM	SA	Total no. of isolates	SA	EC	CA
NNP	17	19	26	44	106	58 (54.72)	52 (49.06)	26 (24.53)	21 (19.81)	14 (13.21)
PWS	15	9	19	23	66	28 (42.42)	22 (33.33)	12 (18.18)	12 (18.18)	10 (15.15)
Total	32	28	45	67	172	86 (50.00)	74 (43.02)	38 (22.09)	33 (19.19)	24 (13.95)

^aSA: S. aureus MTCC 96; EC: E. coli MTCC 40; CA: C. albicans MTCC 227
^bScreening of antimicrobial activity was done by spot inoculation method. The % of active isolates were calculated based on the total number of isolates obtained in each collection sites
^cScreening of antimicrobial activity was done by agar well diffusion method. The % of active isolates were calculated based on the total number of isolates obtained in each collection sites
^dIZ: Inhibition zone

ISSN: 1471-2180