Chemical profiles of methanolic extracts from two species of microalgae Nannochloropsis sp. and Spirulina sp.

Haziq Ahmad Hazwan Zainoddin, . and Azhar Hamzah, . and Zainoddin Jamari, . and Wan Adnan Wan Omar, . Chemical profiles of methanolic extracts from two species of microalgae Nannochloropsis sp. and Spirulina sp. pp. 1085-1096. ISSN 1511-3701

Microalgae are potential sources of bioactive compounds that have health promoting effects due to the abundant presence of flavonoids and polyphenols. The goal of this study was to investigate the chemical profiles of microalgae extracts from Nannochloropsis sp. and Spirulina sp. Total phenolic content (TPC) total flavonoid content (TFC) and antioxidant activity (DPPH) were measured. Nannochloropsis sp. had a significantly higher TPC value than Spirulina sp. (58.43 0.85 mg GAE/g DW vs. 19.64 0.52 mg GAE/g DW p 0.01) and a significantly higher TFC value than Spirulina sp. (79.87 0.12 mg QE/g DW vs. 11.19 0.07 mg QE/g DW p 0.01). Nannochloropsis sp. also exhibited a greater percentage of DPPH inhibition compared to Spirulina sp. (EC50 0.195 0.007 mg/mL vs. 0.613 0.003 mg/mL p 0.01). TPC and TFC were negatively correlated with the EC50 of DPPH antioxidant inhibition activity (-0.956 p 0.003 and “0.899 p 0.015 respectively). These negative correlations indicate that polyphenol compounds are the major contributors to the antioxidant activity observed in this study. Further analysis is needed to determine how to utilize the health benefits of both microalgae.

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Abstract

Microalgae are potential sources of bioactive compounds that have health promoting effects due to the abundant presence of flavonoids and polyphenols. The goal of this study was to investigate the chemical profiles of microalgae extracts from Nannochloropsis sp. and Spirulina sp. Total phenolic content (TPC) total flavonoid content (TFC) and antioxidant activity (DPPH) were measured. Nannochloropsis sp. had a significantly higher TPC value than Spirulina sp. (58.43 0.85 mg GAE/g DW vs. 19.64 0.52 mg GAE/g DW p 0.01) and a significantly higher TFC value than Spirulina sp. (79.87 0.12 mg QE/g DW vs. 11.19 0.07 mg QE/g DW p 0.01). Nannochloropsis sp. also exhibited a greater percentage of DPPH inhibition compared to Spirulina sp. (EC50 0.195 0.007 mg/mL vs. 0.613 0.003 mg/mL p 0.01). TPC and TFC were negatively correlated with the EC50 of DPPH antioxidant inhibition activity (-0.956 p 0.003 and “0.899 p 0.015 respectively). These negative correlations indicate that polyphenol compounds are the major contributors to the antioxidant activity observed in this study. Further analysis is needed to determine how to utilize the health benefits of both microalgae.

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Item Type:	Article
AGROVOC Term:	Algae
AGROVOC Term:	Spirulina spp
AGROVOC Term:	Chemical properties
AGROVOC Term:	Extracts
AGROVOC Term:	Biological analysis
AGROVOC Term:	Flavonoids
AGROVOC Term:	Phenolic content
AGROVOC Term:	Antioxidants
AGROVOC Term:	Polyphenol content
AGROVOC Term:	Methanol
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:29
URI:	http://webagris.upm.edu.my/id/eprint/24803

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