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Assessment of Antioxidant and Antibacterial Activities of Cystoseira mediterranea and Padina pavonica from Algerian North-East for a Potential Use as a Food Preservative

Keramane, B. and Touati, N. and Saidani, K. and Taguelmimt, A. and Zair, I. and Bedjou, F. (2020) Assessment of Antioxidant and Antibacterial Activities of Cystoseira mediterranea and Padina pavonica from Algerian North-East for a Potential Use as a Food Preservative. ACTA ALIMENTARIA: AN INTERNATIONAL JOURNAL OF FOOD SCIENCE, 49 (4). pp. 498-504. ISSN 0139-3006 (print); 1588-2535 (online)

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Abstract

The aim of this work was to evaluate the antioxidant and antibacterial activities of two marine algae, Cystoseira mediterranea and Padina pavonica, extracts. Total phenols (TPC), carotenoids, and phlorotannins contents of the extracts obtained by four extraction solvents were determined and compared. The highest TPC content was observed for aqueous extract of C. mediterranea with 37.09±0.46 mg GAE/g DE followed by ethanol extract of P. pavonica (24.28±0.99 mg GAE/g DE), which showed the highest phlorotannins content (1.18±0.18 mg PE/g DE), while its methanol extract held carotenoids content of 66.96±4.78 μg g–1 DE. Ethanol extract of C. mediterranea exhibited the best antioxidant activity with an EC50 of 58.3±1.16 μg ml–1. The antibacterial activity screening against MRSA and E. coli showed that ethanol extract of C. mediterranea towards a Methicillin resistant Staphyloccocus aureus (20.33±0.28 mm) and E. coli (15.66±0.57 mm) was more efficient with MICs about 80 mg ml–1 and 20 mg ml–1, respectively. Ethanol extract of C. mediterranea seems to have the highest potential for use in food industries.

Item Type: Article
Additional Information: MTA KFB támogatási szerződés alapján archiválva
Uncontrolled Keywords: seaweeds; phlorotannins; carotenoids; antibacterial activity; antioxidant activity
Subjects: Q Science / természettudomány > QD Chemistry / kémia > QD01 Analytical chemistry / analitikai kémia
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 15 Jul 2021 14:13
Last Modified: 07 Nov 2021 00:15
URI: http://real.mtak.hu/id/eprint/127556

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