Cellulosic material obtained from Antarctic algae biomass

Paniz, Oscar Giordani; Pereira, Cláudio M. P.; Pacheco, Bruna Silveira; Wolke, Silvana I.; Maron, Guilherme Kurz; Mansilla, Andrés; Colepicolo, Pio; Orlandi, Marcelo Ornaghi; Osório, Alice Gonçalves; Carreño, Neftalí Lênin Villarreal

doi:10.1007/s10570-019-02794-2

Cited by 28 publications

(3 citation statements)

References 57 publications

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“…Agarose characteristic bands were also observed at 933 and 876 cm −1 , attributed to the 3,6-anhydro-β-galactose skeletal bending modes. The absorption band located at 1634 cm −1 was related to the protein [ 27 ] and 228 the weak band observed at 1241 cm −1 could be assigned to the pyranose ring bending vibrations in agarose. The broad band between 3000 and 3500 cm −1 was associated to the OH groups responsible for hydrogen bonding in the cellulose molecule [ 28 ] .…”

Section: Resultsmentioning

confidence: 99%

Valorization of agar production residue as a filler in soy protein hydrogels for 3D printing

Uranga¹,

Carranza²,

Peñalba³

et al. 2023

ijb

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Cellulose-containing residue from agar production was incorporated as a filler into soy protein-based hydrogels and revalorized without further purification. Rheological assessment of these hydrogels was carried out in order to confirm their shear-thinning behavior and their suitability for 3D printing. It was observed that all hydrogels behaved as weak gels, which are suitable for 3D printing and have good printability and shape fidelity. The addition of cellulose did not cause chemical crosslinking but physical interactions, which led to morphological changes, thereby promoting hardness and shape recovery of the 3D-printed products. The hydrogel with the highest residue content (8 wt %) showed the highest value (78%) in shape recovery. Furthermore, the physicochemical characterization of these 3D-printed products revealed that although they have high swelling capacity, they preserve their integrity in wet conditions. These results suggested the potential of the 3D-printed products developed using residues without further purification to promote circular economy, increasing the efficiency in resources utilization.

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Section: Resultsmentioning

confidence: 99%

Valorization of agar production residue as a filler in soy protein hydrogels for 3D printing

Uranga¹,

Carranza²,

Peñalba³

et al. 2023

ijb

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“…(Cardozo et al 2007;Gressler et al 2009Gressler et al , 2011Martins et al, 2016). Furthermore, isolated compounds, extracts and fractionated extracts have been reported to have important biological activities, including anti-inflammatory, neglected diseases such as leishmanicidal, trypanocidal ( Torres et al 2014;Falkenberg et al 2019;Rangel et al 2019;Clementino et al 2020;, schistosomicidal (Stein et al 2021), antioxidant and UV absorber (Rangel et al 2020;Tavares et al 2020a;2020b), anticancer (Vieira et al 2016;Santos-Pirath et al 2020, Gambato et al 2014, biofilms for drug release (Paniz et al 2020) and microbicidal properties as antifungal (Stein et al 2011), antivirus (Cirne-Santos et al 2020, antifouling ( Salgado et al 2008, Carvalho et al 2017. Due to the different uses and wide availability of these photosynthetic organisms, the interest has turned from wild harvest to farming and controlled cultivation.…”

Section: Macroalgaementioning

confidence: 99%

Bioprospecting macroalgae, marine and terrestrial invertebrates & their associated microbiota

et al. 2022

Self Cite

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The present review aims the discussion of the impact of the bioprospection initiative developed by the projects associated to BIOprospecTA, a subprogram of the program BIOTA, supported by FAPESP. This review brings a summary of the main results produced by the projects investigating natural products (NPs) from non-plants organisms, as examples of the success of this initiative, focusing on the progresses achieved by the projects related to NPs from macroalgae, marine invertebrates, arthropods and associated microorganisms. Macroalgae are one of the most studied groups in Brazil with the isolation of many bioactive compounds including lipids, carotenoids, phycocolloids, lectins, mycosporine-like amino acids and halogenated compounds. Marine invertebrates and associated microorganisms have been more systematically studied in the last thirty years, revealing unique compounds, with potent biological activities. The venoms of Hymenopteran insects were also extensively studied, resulting in the identification of hundreds of peptides, which were used to create a chemical library that contributed for the identification of leader models for the development of antifungal, antiparasitic, and anticancer compounds. The built knowledge of Hymenopteran venoms permitted the development of an equine hyperimmune serum anti honeybee venom. Amongst the microorganisms associated with insects the bioprospecting strategy was to understand the molecular basis of intra- and interspecies interactions (Chemical Ecology), translating this knowledge to possible biotechnological applications. The results discussed here reinforce the importance of BIOprospecTA program on the development of research with highly innovative potential in Brazil.

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“…The variable nature and advantageous qualities of nanocellulose-based aerogels, which are made from cellulose nanocrystals (CNCs), cellulose nanofibers (CNFs), or bacterial cellulose (BCs), include large surface area, high thermal and chemical stabilities, and customizable porosity structure . They have been employed as renewable parts in thermal insulation, optical performance, sensing, oil/water separation, wound dressing, catalyst support, and sound absorption. − Nevertheless, the flammability of aerogels made from CNF remains a significant limitation that impedes their use in this particular application. To meet strict safety regulations, it is imperative to achieve a substantial enhancement in flame retardancy while maintaining insulating qualities and thermal and mechanical stabilities.…”

Section: Introductionmentioning

confidence: 99%

Harnessing the Flexibility of Lightweight Cellulose Nanofiber Composite Aerogels for Superior Thermal Insulation and Fire Protection

Bhardwaj,

Singh,

Dev

et al. 2024

ACS Appl. Mater. Interfaces

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Thermally insulating materials from renewable and readily available resources are in high demand for ecologically beneficial applications. Cellulose aerogels made from lignocellulosic waste have various advantages. However, they are fragile and breakable when bent or compressed. In addition, cellulose aerogels are flammable and weather-sensitive. Hence, to overcome these problems, this work included the preparation of polyurethane (PU)based cellulose nanofiber (CNF) aerogels that had flexibility, flame retardancy, and thermal insulation. Methyl trimethoxysilane (MTMS) and water-soluble ammonium polyphosphate (APP) were added to improve the cross-linking, hydrophobicity, and flame-retardant properties of aerogels. The flexibility of chemically cross-linked CNF aerogels is enhanced through the incorporation of polyurethane via the wet coagulating process. The aerogels obtained during this study have exhibited low weight (density: 35.3− 91.96 kg/m 3 ) together with enhanced hydrophobic properties, flame retardancy, and decreased thermal conductivity (26.7−36.7 mW/m K at 25 °C). Additionally, the flame-retardant properties were comprehensively examined and the underlying mechanism was deduced. The aerogels prepared in this study are considered unique in the nanocellulose aerogel category due to their integrated structural and performance benefits. The invention is considered to substantially contribute to the large-scale manufacture and use of insulation in construction, automobiles, and aerospace.

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Cellulosic material obtained from Antarctic algae biomass

Cited by 28 publications

References 57 publications

Valorization of agar production residue as a filler in soy protein hydrogels for 3D printing

Valorization of agar production residue as a filler in soy protein hydrogels for 3D printing

Bioprospecting macroalgae, marine and terrestrial invertebrates & their associated microbiota

Harnessing the Flexibility of Lightweight Cellulose Nanofiber Composite Aerogels for Superior Thermal Insulation and Fire Protection

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