Vol. 7, Issue 12 (2018)

Author(s):
V Shajeeda Banu, Binita Hazarika, Sneha Sawhney and JK Mishra

Abstract:
The red seaweed, Trichogloeopsis pedicellata (M. Howe) I.A. Abbott and Doty, 1960 ^[1] is being reported for the first time with its seasonal occurrence along the coast of Andaman & Nicobar Islands. Like other bioactive potential seaweeds, crude extract of T. pedicellata exhibited activity against human pathogens Staphylococcus aureus (MTCC 3160), Bacillus cereus (MTCC 430) and Salmonella enterica typhimurium (MTCC 1252). Ethanolic extract of T. pedicellata showed activity against both gram-positive and gram-negative bacteria revealing its potential as a source of bioactive compounds. Out of seven bacterial strains tested, zone of inhibition was prominent in three bacterial strains. Maximum zone of inhibition exhibited by gram-positive bacteria S. aureus (21mm) followed by B. cereus (18mm) and minimum zone of inhibition by gram-negative bacteria S. enterica typhimurium (14mm), when it was treated at 100µl of 100 mg/ml concentration of the crude extract.