Evaluation of the Antimicrobial and Antioxidant Activity of Two Chlorophyceae and Two Rhodophyceae Seaweeds from Porbandar Coast

Abstract

Seaweeds are significant marine sources of bioactive compounds with prospective use inefficient foods and nutraceutical products. Four marine macroalgae species from the western coasts of Gujarat were evaluated for their antimicrobial and antioxidant activity. The antimicrobial activity of extracts of red seaweed Hypnea valentiae and Spyridia filamentosa and green seaweed Enteromorpha compressa and Caulerpa racemosa using cold percolation extraction in an in-vitro method and testing against six pathogenic bacteria and one fungi. Results showed effective inhibition zone. The antioxidant activity of the seaweeds methanol extracts was measured using 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay for measuring potential scavenger of free radical. Both activities were shown promising result of all four seaweeds. This study suggested that seaweeds could have shown a potential role in the future remedy and nutrition which can be used as drug or food additive.