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{BENITOGONZALEZ2021100730,

title = {Pilot plant scale-up of the production of optimized starch-based biocomposites loaded with cellulosic nanocrystals from Posidonia oceanica waste biomass},

author = {Isaac Benito-González and Gülden Göksen and Zaida Pérez-Bassart and Amparo López-Rubio and Rafael Sánchez and José María Alonso and Rafael Gavara and Miriam Gallur and Marta Martínez-Sanz},

url = {https://www.sciencedirect.com/science/article/pii/S2214289421000983},

doi = {https://doi.org/10.1016/j.fpsl.2021.100730},

issn = {2214-2894},

year  = {2021},

date = {2021-01-01},

journal = {Food Packaging and Shelf Life},

volume = {30},

pages = {100730},

abstract = {Posidonia oceanica biomass has been valorized to produce cellulosic nanocrystals with different purification degrees at lab- and pilot plant-scale. The cellulosic nanocrystals (10 % and 20 % (w/w)) were incorporated into corn starch, producing biocomposite films by melt mixing and hot-pressing at lab-scale. Biocomposite films showed remarkable improvements on the mechanical and water barrier performance (up to 10-fold increase in the elastic modulus and 2-fold decrease in the water permeability). Biocomposite packaging structures were also produced at pilot plant-scale by extrusion and thermoforming. Adjusting the plasticizer formulation and increasing the nanocrystals’ loading up to the maximum enabling good processability (10 % (w/w)) allowed the production of trays with enhanced water barrier and mechanical performance, which, unlike the pure starch, kept their shape upon storage. These results highlight the potential of P. oceanica nanocrystals to improve the performance of starch-based packaging structures and demonstrates the potential of the production process to be industrially applied.},

keywords = {Biopolymers, Cellulosic nanocrystals, Extrusion, Pilot plant, Thermoforming, Waste biomass},

pubstate = {published},

tppubtype = {article}

}

@article{BENITOGONZALEZ2020124607,

title = {PLA coating improves the performance of renewable adsorbent pads based on cellulosic aerogels from aquatic waste biomass},

author = {Isaac Benito-González and Amparo López-Rubio and Laura G. Gómez-Mascaraque and Marta Martínez-Sanz},

url = {https://www.sciencedirect.com/science/article/pii/S1385894720305982},

doi = {https://doi.org/10.1016/j.cej.2020.124607},

issn = {1385-8947},

year  = {2020},

date = {2020-01-01},

urldate = {2020-01-01},

journal = {Chemical Engineering Journal},

volume = {390},

pages = {124607},

abstract = {Lightweight, hydrophobic, adsorbent pads based on aerogels from different cellulosic and nanocellulosic fractions extracted from Posidonia oceanica waste biomass were developed by a simple freeze-drying and PLA dipping method. The pure (nano)cellulosic aerogels presented highly porous structures, capable of adsorbing large amounts of oil (up to ~34 g oil/g aerogel); however, they lost their integrity when soaked in water. The incorporation of PLA hydrophobized the aerogels and improved significantly their mechanical performance (up to 10-fold increase in the compression stress). The most porous aerogel structures, obtained with the lowest (nano)cellulosic concentrations and with the less purified fractions, incorporated greater amounts of PLA upon dipping, which was mostly distributed filling in the pores. All the PLA-coated (nano)cellulosic aerogels presented a hydrophobic behaviour, with contact angles of 95–130° and selectively adsorbing greater amounts of oil (5.9–9.2 g oil/g aerogel) than water (2.8–6.7 g H2O/g aerogel). These materials present a great potential as adsorbent pads for oil spill cleaning and food packaging applications.},

keywords = {Biopolymers, Microstructure, Oil sorption, Porous materials, Seaweed},

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}

}