In this study, majority of the isolates dominated in antibacterial potential against test pathogens. The reason may be the complex biochemical pathways adopted by our isolates due to the available nutrients and osmotic flux in sampling site. Surfactants are amphiphilic compounds, produced by microorganisms of various classes including glycolipids, lipopeptides, fatty acids, phospholipids, neutral lipids and lipopolysaccharides [50]. Applications of surfactants includes excellent detergency, emulsification, foaming,

wetting, penetrating, thickening, microbial growth enhancements, metal sequestering and oil recovering. Surfactants are promising compounds and offer several advantages over chemically synthesized surfactants due to its lower toxicity, biodegradability and ecological acceptability [51]. To our credit, Streptomyces sp. GSK2126458 purchase NIOT-VKKMA02 was found to have excellent emulsification property. Marine actinobacteria are good candidates for surfactant production, bioremediation and biodegradation [51]. Halotolerant Streptomyces was

reported to be a good surfactant producer [52]. Based on literature survey, our study stands first in reporting surfactant production from marine actinobacteria of A & N Islands. Growth survival studies of our isolates also accomplished to withstand in varied NaCl and pH levels. Based on previous reports, majority of the actinobacterial species isolated from marine sediments were moderate alkaliphilic and Selleck ABT-263 moderate halophilic in nature [6, 10, 11]. To cope with the external stress, these organisms have developed adaptive

metabolic features to survive under extreme conditions [52]. Nesterenkonia alba sp. nov., an alkaliphilic actinobacterium was reported to grow optimally at pH 9–10 [53]. Chen et al. [54] also reported a halophilic marine actinomycete, Nocardiopsis litoralis sp. nov., isolated from a sea anemone. Actinobacteria are physiologically diverse group in synthesizing various enzymes and metabolic products of industrial interest and are well recognized to produce most valuable pharmaceuticals and agrochemicals [55]. Marine actinobacteria isolated from East and West coast of India were reported in the production of various industrial enzymes [52]. Upon characterization for industrially potential enzymes, results from the potential isolates of our study Loperamide revealed highly competent enzyme activity with that of previous reports. Bernfield [29] isolated several actinobacteria from marine sediments of the Central and West coast of Peru with multienzyme activity. Selvam et al. [56] reported 6.48 U/ml of amylase production from actinomycetes isolated from South Indian coastal region. While comparing with this result, Streptomyces sp. NIOT-VKKMA02 synthesized 13.27 U/ml of protease enzyme, which is two fold increases to that of previous report and the same augment was also recorded in cellulase production by the same strain.