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Evaluation of phenolic contents and antioxidant activities of brown seaweeds belonging to Turbinaria spp. (Phaeophyta, Sargassaceae) collected from Gulf of Mannar

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Relation http://eprints.cmfri.org.in/13989/
https://www.sciencedirect.com/science/article/pii/S2221169113600167
doi: 10.1016/S2221-1691(13)60016-7.
 
Title Evaluation of phenolic contents and antioxidant activities of brown
seaweeds belonging to Turbinaria spp. (Phaeophyta, Sargassaceae)
collected from Gulf of Mannar
 
Creator Chakraborty, Kajal
Praveen, N K
Vijayan, K K
Rao, G Syda
 
Subject Bioactive compound
Seaweed
 
Description OBJECTIVE:
To evaluate the antioxidant activities and total phenolic contents of brown seaweeds belonging to Turbinaria spp. [Turbinaria conoides (T. conoides) and Turbinaria ornata (T. ornata) collected from Gulf of Mannar of southeastern coast of India in various in vitro systems.

METHODS:
The antioxidant activity was evaluated using different in vitro systems, viz., 1, 1-diphenyl-2-picrylhydrazyl (DPPH), 2, 2'-azino-bis-3 ethylbenzothiozoline-6-sulfonic acid diammonium salt (ABTS), H2O2/HO radical scavenging, Fe(2+) ion chelating ability, and reducing potential. Folin-Ciocalteu method was used to determine the total phenolic content of the extracts, and the results were expressed as mg of gallic acid equivalents (GE)/g of the seaweed extracts. Thiobarbituric acid-reactive substances assay was employed to assess the ability of the seaweed extracts to inhibit lipid oxidation.

RESULTS:
Ethyl acetate (EtOAc) fraction of T. conoides registered significantly higher phenolic content (105.97 mg GE/g) than that of T. ornata (69.63 mg GE/g). Significantly higher antioxidant potential as determined by DPPH (64.14%) radical scavenging activity was registered in EtOAc fraction of T. ornata. A higher ABTS(•+) radical scavenging (IC50 3.16 µg/mL), Fe(2+) chelating (IC50 0.46 mg/mL), H2O2 scavenging (IC50 4.25 mg/mL), lipid peroxidation inhibitory (TBARS, IC50 0.21 mg/mL), and reducing abilities (IC50 52.67 mg/mL) (P
 
Date 2013
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/13989/1/Kajal%20Chakraborty_2013_Asian%20Pacific%20Journal%20of%20Tropical%20Biomedicine_Evaluation%20of%20phenolic%20contents%20and%20antioxidant%20activities%20of%20brown%20seaweeds%20belonging%20to%20Turbinaria.pdf
Chakraborty, Kajal and Praveen, N K and Vijayan, K K and Rao, G Syda (2013) Evaluation of phenolic contents and antioxidant activities of brown seaweeds belonging to Turbinaria spp. (Phaeophyta, Sargassaceae) collected from Gulf of Mannar. Asian Pacific Journal of Tropical Biomedicine, 3 (1). pp. 8-16.