Publicaciones

@article{CEBRIANLLORET2022102576,

title = {Valorization of alginate-extracted seaweed biomass for the development of cellulose-based packaging films},

author = {Vera Cebrián-Lloret and Mandy Metz and Antonio Martínez-Abad and Svein Halvor Knutsen and Simon Ballance and Amparo López-Rubio and Marta Martínez-Sanz},

url = {https://www.sciencedirect.com/science/article/pii/S2211926421003957},

doi = {https://doi.org/10.1016/j.algal.2021.102576},

issn = {2211-9264},

year  = {2022},

date = {2022-01-01},

journal = {Algal Research},

volume = {61},

pages = {102576},

abstract = {Seaweed residues from Alaria esculenta, Saccharina latissima and Ascophyllum nodosum after alginate extraction have been valorized to produce cellulose-based fractions with different purification degrees. The residues were mainly composed of carbohydrates (35–57%) and proteins (12–37%), Alaria and Saccharina being richer in cellulose and Ascophyllum richer in fucoidan. The lower cellulose content in the latter made it unsuitable for the extraction of cellulosic fractions. Self-supporting films were obtained from the cellulosic fractions from Saccharina and Alaria residues. While the higher cellulose purity films presented more desirable characteristics in terms of mechanical properties (with elastic moduli of ca. 5–7 GPa and elongation values of ca. 3–5%) and visual appearance, the presence of non-cellulosic components in the films from less purified fractions reduced their water sensitivity and promoted greater water barrier (with water permeability values of ca. 4–6 kg·m/s·m2·Pa). These results point towards the potential of a simple alkaline extraction to generate cellulose-based films from seaweed residuals with the best compromise between functional properties and economical and environmental efficiency.},

keywords = {Biopolymers, Cellulose, Packaging, Seaweed, Valorization},

pubstate = {published},

tppubtype = {article}

}

@article{MARTINEZSANZ2020115887,

title = {Improved performance of less purified cellulosic films obtained from agar waste biomass},

author = {Marta Martínez-Sanz and Vera Cebrián-Lloret and Jesús Mazarro-Ruiz and Amparo López-Rubio},

url = {https://www.sciencedirect.com/science/article/pii/S0144861720300618},

doi = {https://doi.org/10.1016/j.carbpol.2020.115887},

issn = {0144-8617},

year  = {2020},

date = {2020-01-01},

journal = {Carbohydrate Polymers},

volume = {233},

pages = {115887},

abstract = {The residues generated after the extraction of agar from Gelidium sesquipedale by means of a hot-water treatment, with (NaOH+HW residue) and without (HW residue) an alkali pre-treatment have been valorized to produce high performance cellulosic films. Both residues were mainly composed of structural carbohydrates (in particular, agar), ashes and lipids. The residual agar could only be completely removed by applying a two-step process based on bleaching and alkaline treatments. The application of the alkaline pre-treatment for the extraction of agar did not significantly affect the properties of the films produced from the extracted fractions, hence making the HW residue more sustainable and economically viable. The agar remaining in the less purified fractions had a positive effect on the performance of the films, improving their transparency, mechanical properties and water vapour barrier, outperforming benchmark biopolymers; in addition, these materials presented antioxidant capacity inhibiting the degradation of β-carotene.},

keywords = {Agar, Biopolymers, Cellulose, Packaging, Seaweed, Valorization},

pubstate = {published},

tppubtype = {article}

}