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Bioprotective properties of Ecklonia Cava Seaweeds

In vitro evaluation of antioxidant activity and antimicrobial activity against food borne bacteria in relation to polyphenolic content.


For many years chemical preservatives have been used in food, to act as either antimicrobials or antioxidants or both. In general, consumers regard additive-free foods as safer since preservatives can cause health hazards like asthma and cancer and are suspected to be mutagenic and neurotoxic. The present study was carried out to evaluate the antimicrobial and antioxidant activity of methanolic extracts of seaweeds, with a view to developing safer food preservatives.


Ten edible seaweeds, which have wide pharmaceutical application, were collected from Central Marine Fisheries Research Institute, Tamil Nadu, India and evaluated for antioxidant and antimicrobial activity against food borne pathogens.


The results indicate that Gelidiella acerosa has the highest antioxidant activity while Haligra sps exhibited antibacterial activity against Staphylococcus aureus (MTCC 96).


Quantitative analysis of the total phenolic content of the seaweeds indicated that Gelidella acerosa and Haligra sps have high phenolic contents, which correlated to their respective antioxidant and antimicrobial activity.


Daily ORAC 12 by SinatraThe methanolic extract of brown seaweeds such as Ecklonia cava and Hizikia fusiformis exhibit potent antioxidant activity. Although seaweeds possess wide application in food and in the pharmaceutical industry, the antioxidant and antimicrobial activity of many types of seaweed in the South Indian coastal area are still unexplored. The main objective of the present study is to evaluate the antioxidant and antimicrobial activities of seaweeds obtained from the Thondi, South Coastal Area of Tamil Nadu, India.



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Kasi Pandima Devi, Natarajan Suganthy, Periyanaina Kesika and Shanmugaiahthevar Karutha Pandian. Department of Biotechnology, Alagappa University, Karaikudi- 630 003, Tamil Nadu, India

DISCLAIMER: The information provided is intended for educational purposes only.  It is not intended to diagnose, treat, cure or prevent any disease.  Please seek the advice of a qualified health care practitioner before using any herbs, supplements or other natural approaches to health.

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