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    Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10259/5671

    Título
    Enzymatic hydrolysis of the industrial solid residue of red seaweed after agar extraction: Extracts characterization and modelling
    Autor
    Trigueros Andrés, Esteruntranslated
    Sanz Díez, Mª Teresauntranslated
    Filipigh, Ángel Alejandro
    Beltrán Calvo, Sagrariountranslated
    Alonso Riaño, Patricia
    Publicado en
    Food and Bioproducts Processing. 2021, V. 126, p. 356-366
    Editorial
    Elsevier
    Fecha de publicación
    2021-03
    ISSN
    0960-3085
    DOI
    10.1016/j.fbp.2021.01.014
    Abstract
    The efficiency of enzymatic hydrolysis for the release of different biocompounds such as total phenolic compounds (TPC), sugars and proteins from the industrial solid residue of G. sesquipedale after agar extraction has been evaluated. Cellulase (0.25–8%, w/w, enzyme: solid residue, pH = 5) has been proved to be an efficient enzyme to degrade the algae cell wall improving the release of the bound TPC with values up to 7.5 mg gallic acid equivalent/g dry macroalgae residue. Monomer and oligomer carbohydrates were released to the reaction medium, namely glucose, galactose and arabinose with higher yields by increasing cellulase concentration. Enzyme combinations with other hydrolytic enzymes, such as xylanase and protease, did not bring any improvement of the TPC and sugar yields. Protein was also released to the enzymatic medium with protein extraction yields around 30%. The use of protease under basic conditions led to an increase in the release of the protein fraction and of the free amino acids content with a hydrophobic ratio higher than in the raw material. The kinetics of TPC and protein hydrolysis have been fitted to the power law and the Weibull models yielding the Weibull model the best fitting quality.
    Palabras clave
    Hydrolytic enzymes
    Kinetic models
    Macroalgae industrial residue
    TPC
    Carbohydrates
    Proteins
    Materia
    Ingeniería química
    Chemical engineering
    URI
    http://hdl.handle.net/10259/5671
    Versión del editor
    https://doi.org/10.1016/j.fbp.2021.01.014
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