Please use this identifier to cite or link to this item: https://scholarhub.balamand.edu.lb/handle/uob/7317
Title: Role of infrared-assisted extraction of antioxidant phytochemicals in enhancing antimicrobial activity of Phaeodactylum tricornutum
Authors: Calleja-Gómez, Mara
Abi-Khattar, Anna Maria
Debs, Esperance 
Rajha, Hiba N.
Maroun, Richard
Martínez-Culebras, Pedro Vicente
Louka, Nicolas
Affiliations: Research Group in Innovative Technologies for Sustainable Food (ALISOST), Department of Preventive Medicine and Public Health, Food Science, Toxicology and Forensic Medicine, Faculty of Pharmacy, Universitat de València, Avda. Vicent Andrés Estellés S/n, Burjassot, 46100, València, Spain
Centre D’Analyses et de Recherche, Unité de Recherche Technologies et Valorisation Agro-Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, Riad El Solh, P.O. Box 17-5208, Beirut, 1104 2020, Lebanon
Department of Biology 
Centre D’Analyses et de Recherche, Unité de Recherche Technologies et Valorisation Agro-Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, Riad El Solh, P.O. Box 17-5208, Beirut, 1104 2020, Lebanon
Centre et de Recherche, Unité de Recherche Technologies et Valorisation Agro-Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, Riad El Solh, P.O. Box 17-5208, Beirut, 1104 2020, Lebanon
Editors: Dr. Rakesh K. Singh, PhD
Keywords: Antibacterial
Bioactive compounds
Infrared-assisted extraction
Microalgae
Phaeodactylum tricornutum
Issue Date: 2024-04-15
Publisher: Elsevier
Part of: LWT
Volume: 198
Issue: 116072
Start page: 1
End page: 8
Abstract: 
Microalgae are a sustainable source of highly bioactive and nutritious biomolecules such as polyphenols, and carotenoids. The efficiency of a novel infrared (IR) technology in terms of optimization of phytochemical (phenolic compounds, chlorophylls and carotenoids) recovery from P. tricornutum was studied using Response Surface Methodology (RSM). Optimized antioxidant activity (870 ± 22 μg TE/mL) and phenolic compound concentration (562 ± 7 mg GAE/100 g DM) were obtained using IR at 33 °C for 12 min at pH 7. In addition, chlorophyll A (26.54 ± 2.78 mg/100 g DM) and carotenoids (9.61 ± 0.40 mg/100 g DM) were recovered at the simultaneous optimal IR conditions: 56 °C, 36 min, pH 9.5. Compared to conventional aqueous extraction, IR enhanced by 10.06% the recovery of phenolic compounds and ameliorated their biological activities by 36.24% for DPPH, 17.24% for CUPRAC, 14.50% for TEAC, and 4.60% for FRAP. Finally, IR bioactive extracts also exhibited antibacterial effects against S. aureus. In conclusion, the richness of P. tricornutum in phytochemicals makes it a valuable alternative food source. IR technology proved to be an efficient method for the recovery of high-added value compounds from microalgae. Antioxidant and pigment-rich microalgae extracts can be used as dietary supplements.
URI: https://scholarhub.balamand.edu.lb/handle/uob/7317
ISSN: 00236438
DOI: 10.1016/j.lwt.2024.116072
Open URL: Link to full text
Type: Journal Article
Appears in Collections:Department of Biology

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