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Antioxidant and antimicrobial activities in the four species of marine microalgae isolated from Arabian Sea of Karnataka Coast

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Title Antioxidant and antimicrobial activities in the four species of marine microalgae isolated from Arabian Sea of Karnataka Coast
 
Creator Sushanth, V. R.
Rajashekhar, M.
 
Subject Marine microalgae
Antioxidant activity
Antimicrobial activity
Phenolic compounds
 
Description 69-75
In the present study, four marine microalgae
namely, Chaetoceros calcitrans,
Skeletonema costatum, Chroococcus turgidus and Nannochloropsis oceanica
were evaluated for their antioxidant and antimicrobial activities. Among the four
microalgae, planktonic green alga, Nannochloropsis
oceanica showed higher antioxidant potential (340.13 µmol AAE/g DW),
radical scavenging activity (13.3 µmol GAE/g DW) and reducing power capacity
(86.21 µmol GAE/g DW). Microalgae namely, Skeletonema
costatum and Chroococcus turgidus
showed chelating ability, whereas Nannochloropsis
oceanica and Chaetoceros calcitrans
did not. Total phenolic content of microalgae
was highly correlated with the antioxidant activity. Methanol, ethanol and
hexane extracts were screened for their antimicrobial activities against
selective human pathogens. Extracts showed effective inhibitory activity
against Staphylococcus aureus, Streptococcus pyogenes and Bacillus subtilis. Hexane extract of Chroococcus turgidus showed significant
inhibition (p
 
Date 2016-07-04T08:19:54Z
2016-07-04T08:19:54Z
2015-01
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/34627
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.44(01) [January 2015]