Vol. 6, Issue 11 (2017)

Author(s):
Arokiasamy Antoniraj, Virippin Anandan, Takshnamurthy Ganesan and Amirsingh Gunasingh

Abstract:
Actinomycetes isolated from marine environment are found to be important sources of a bioactive compounds with antibiotic, anti-inflammatory, antiviral and antitumour properties. Cultural characteristics of the active Actinomycetes isolate F-7 associated with carangid fish Alepes melanoptera caught from Puducherry, South East coast of India was investigated under this study. Morphological, physiological and biochemical characteristics of the actinomycetes isolate F-7 was studied in different ph, temperatures, NaCl concentrations and growth media. Distinct aerial and substrate mycelia colouration and diffusible pigmentation was formed by the actinomycetes isolate F-7. Antimicrobial activity of the isolate F-7 grown in Zobell marine agar, PDA and ISP-6 were tested against Escherichia coli, Pseudomonas fluorescens, Shewanella putrefaciens, Vibrio parahaemolyticus, Alteromonas sp., Staphylococcus aureus and Candida sp. The degree of inhibition of the isolate against selected fish spoilage and pathogen organisms were recorded and found to differ in different media. The present investigation concludes the potentiality of actinomycetes associated with marine fishes as a promising source of antibacterial bioactive substances which needs to be explored further.