Ultrasound, microwave and enzyme-assisted multiproduct biorefinery of Ascophyllum nodosum
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This study investigated the multiproduct (fucoidans, β-glucans, proteins, carotenoids, fatty acids, amino acids and polyphenols) valorization of the invasive macroalgae Ascophyllum nodosum within a green biorefinery concept using ultrasound (US), microwave (MW) treatment followed by supercritical CO2 (SC-CO2) with co-solvent and enzymatic extraction. Water and 50% aqueous ethanol were used as green extraction solvents. The extraction methods using 50% ethanol as extraction solvent improved the yields of phenolic compounds and glucan and enhanced in vitro antioxidant activity. The characterization of SC-CO2 extracts revealed that pretreatment with US and MW improved the 2-fold yield of carotenoids, total phenolics and fatty acids. However, US/MW pretreatment and enzymatic extraction did not improve the yields of proteins and free amino acids. Overall, using concurrent green US/MW-assisted extraction methods enhanced the yields of the bioactive compounds in a short duration and provided extracts with a better antioxidant capacity in the field of food applications.
Originalsprog | Engelsk |
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Artikelnummer | 137259 |
Tidsskrift | Food Chemistry |
Vol/bind | 433 |
Antal sider | 9 |
ISSN | 0308-8146 |
DOI | |
Status | Udgivet - 2024 |
Bibliografisk note
Funding Information:
This research was/is supported by BiOrbic SFI Bioeconomy Research Centre, which is funded by Ireland's European Structural and Investment Programmes, Science Foundation Ireland (16/RC/3889) and the European Regional Development Fund.
Publisher Copyright:
© 2023 Elsevier Ltd
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