Evaluation and compression of antioxidant activity of metanolic extracts of Gracilaria corticata from the coasts of Bandar-e-Lengeh and Qeshm Island

Document Type : (original research)

Authors

1 Department of Fisheries, Qeshm Island Branch, Islamic Azad University, Qeshm Island, Iran

2 Persian Gulf and Oman Sea Ecology Research Center, Agricultural Research Education and Extension Organization (AREEO), Iranian Fisheries Sciences Research Institute, Bandar Abbas, Iran

Abstract

Red macro algae are one of the most important species in the coastal areas of the Persian Gulf, which are of great importance in terms of food, pharmaceutical and industrial applications. In the present study, sampling of Gracilaria red macroalgae from the coasts of Qeshm Island and Lengeh Port was performed to evaluate the antioxidant activity of Gracilaria Corticata polar extracs. Identification of macroalgae samples collected at the species level was performed by morphological methods. Extraction the polar extracs of the collected samples was performed using methanol polar solvent. The antioxidant activity of Gracilaria corticata macroalgae extracts was performed by DPPH test. The results showed that the inhibitory concentration (IC50) of methanolic extract of algae samples collected from Bandar Lengeh and Qeshm, in concentrations of 26.5 µg / ml and 155.4 µg / ml, respectively and equivalent to 50% of DPPH free radicals. In this study, Gracilaria corticata extract of macroalgae collected from the coasts of the port of Lengeh showed more antioxidant activity compared to the coasts of Qeshm. Also, Gracilaria corticata extract extracted with methanol polar solvent belonging to the coasts of Bandar Lengeh, compared to extracts belonging to Qeshm coast showed more antioxidant activity in terms of inhibition of DPPH free radicals and regenerative power. Based on the results of this study, the populations of Gracilaria Corticata on the coasts of Bandar Lengeh can be considered as superior to Qeshm beaches in terms of antioxidant activity, for food applications.

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References

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Journal of Animal Environment
Volume 13, Issue 1
May 2021
Pages 499-504

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