MALAYSIAN JOURNAL OF CHEMISTRY (MJChem)

MJChem is double-blind peer reviewed journal published by the Malaysian Institute of Chemistry (Institut Kimia Malaysia) E-ISSN: 2550-1658

Phytochemical Contents and Antioxidant Activity of Selected Brown Seaweeds (Sargassum polycystum and Padina minor) of Sabah, Malaysia

Siti Zaleha Abd Tahar
Universiti Malaysia Sabah
Mohd Marzuk Haikal Marbah
Universiti Malaysia Sabah
Noumie Surugau
Universiti Malaysia Sabah
How Siew Eng
Universiti Malaysia Sabah
Lum Mok Sam
Universiti Malaysia Sabah

DOI: https://doi.org/10.55373/mjchem.v24i4.135

Keywords: Antioxidant, phytochemical, Padina minor, Sargassum polycystum

Abstract

Seaweed and its derivatives are rich in bioactive components, which have been widely utilized as biostimulants in crop production to increase plant growth and productivity. The current study was conducted to evaluate the phytochemical contents and antioxidant capacity of aqueous seaweed extracts as a potential biostimulant for plant growth. The brown seaweeds studied were Sargassum polycystum and Padina minor, which were collected from Semporna and Kota Kinabalu, Sabah, respectively. The phytochemical contents namely, total flavonoid content (TFC), total phenolic content (TPC) and total anthocyanin content (TAC); and antioxidant activity (FRAP, DPPH, and ABTS radicals scavenging) of aqueous seaweed extracts were analysed using standard procedures. The results showed that S. polycystum has relatively higher TPC and TFC compared to P. minor. Meanwhile, the TAC of both seaweeds are not significantly different from one another. The antioxidant activities based on DPPH radical scavenging activity (IC50), ABTS radical scavenging activity (IC50) and ferric reducing power assays of S. polycystum were significantly higher than P. minor

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Published 31 December 2022


Issue Vol 24 No 4 (2022): Malaysian Journal of Chemistry

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