2026-04-22T17:32:03Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/95842024-10-03T00:05:22Zcom_10259_4244com_10259_5086com_10259_2604col_10259_4245
Repositorio Institucional de la Universidad de Burgos
author
Trigueros Andrés, Ester
author
Oliveira, Andreia P.
author
Andrade, Paula B.
author
Videira, Romeu A.
author
Guedes de Pinho, Paula
author
Sanz Díez, Mª Teresa
author
Beltrán Calvo, Sagrario
2024-10-02T10:29:09Z
2024-10-02T10:29:09Z
2024-11
0308-8146
http://hdl.handle.net/10259/9584
10.1016/j.foodchem.2024.140310
Gelidium sesquipedale is valued in the Spanish agar industry, but its production generates substantial waste, often discarded despite its nutritional and bioactive content. Subcritical water extraction (SWE) at 175 °C and 50 bar for 130 min was performed on this waste after agar extraction, comparing it to conventional ethanol extraction. The SWE extract exhibited superior nutritional profile, including proteins (170.6 ± 1.0 mg/gfreeze-dried-extract), essential amino acids (18.1%), carbohydrates (148.1 ± 0.3 mg/gfreeze-dried-extract), total phenolic content (57 ± 7 mg-EqGA/gfreeze-dried-extract), and also containing Maillard reaction compounds, such as 5-hydroxymethylfurfural, furfural, 2-furanmethanol, 1-(2-furanyl)-ethanone, and 5-methyl-2-furfural, influencing color, aroma and flavor. This extract showed better antioxidant and anti-inflammatory properties than the conventional extract, and higher xanthine oxidase, tyrosinase, and acetylcholinesterase inhibition activities. Toxicological assessment on human cells indicated the safety of the SWE extract. Therefore, SWE technology offers a promising method to valorize G. sesquipedale residue, yielding a bioactive and nutrient-rich extract suitable for food and nutraceutical applications.
eng
Atribución-NoComercial 4.0 Internacional
Macroalga residue
Subcritical water
Valorization
Bioactivity
Maillard reaction products
Antioxidant activity
Exploring the bioactive potential of algae residue extract via subcritical water extraction: Insights into chemical composition and biological activity
info:eu-repo/semantics/article
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URL
https://riubu.ubu.es/bitstream/10259/9584/1/Trigueros-fc_2024.pdf
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URL
https://riubu.ubu.es/bitstream/10259/9584/2/Trigueros-fc_2024-Supplementary%20data.pdf
File
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Trigueros-fc_2024-Supplementary data.pdf