Antioxidant and antibacterial activities of Oscillatoria sp. and Chlorella sp

Omotola  Adeniyi-Martins; Oluwanifesimi Abisodun  Fasuba; Ademola Arafat  Bolajoko; Dike Ikegwu  Nwankwo; Taofikat Abosede  Adesalu

Omotola Adeniyi-Martins Department of Botany, University of Lagos, Akoka, Lagos, Nigeria
Oluwanifesimi Abisodun Fasuba Department of Marine Sciences, University of Lagos, Akoka, Lagos, Nigeria.
Ademola Arafat Bolajoko Department of Marine Sciences, University of Lagos, Akoka, Lagos, Nigeria
Dike Ikegwu Nwankwo Department of Marine Sciences, University of Lagos, Akoka, Lagos, Nigeria
Taofikat Abosede Adesalu Department of Botany, University of Lagos, Akoka, Lagos, Nigeria

Keywords: GC-MS, antibacterial, antioxidant, Eschericha coli, phytochemicals

Abstract

Chlorophyta and Cyanophyta are potential sources of physiologically active chemicals that are antibacterial, antifungal, anticancer, and antiviral. The total phenolic, flavonoid, antioxidant, and antibacterial properties of Oscillatoria sp. and Chlorella sp. were evaluated using methanol and acetone. The acetone extract of Chlorella sp. had the highest flavonoid (16.575±0.44 mg/g) and antioxidant activity (27.94±27.94 mg/g) while Oscillatoria sp. had the strongest antibacterial activity against the bacteria Escherichia coli. Both methanol and acetone extracts of Oscillatoria sp. and Chlorella sp. using Gas Chromatography Mass Spectroscopy showed the presence of twelve heterocyclic chemicals including Silanediol (37.121%) in the methanol extract and Oxime (28.587%). in both extracts. The antioxidant and antibacterial properties of the chemicals identified in the extracts appeared to be due to synergistic actions. Further research on the antibacterial prospect of Oscillatoria sp. and Chlorella sp. should be explored.