Soybean peroxidase immobilised on cellulose-alginate hydrogels for removal of recalcitrant organic pollutants in water

Rigoletto, Monica; Calza, Paola; Cunha, Alexandre Santuchi da; Sederino, Valentina; Fabbri, Debora; Tummino, Maria Laura; Laurenti, Enzo

doi:10.1039/d3re00009e

Cited by 4 publications

(3 citation statements)

References 58 publications

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“…1600 cm 3 of compost-enriched soil. Two of the four beakers were placed in an oven at 105 °C for 24 h to obtain a reference sterilized soil (without active microorganisms) [48]. The other two containers, covered with aluminum foils, were left under the fume hood.…”

Section: Soil Burial Testmentioning

confidence: 99%

Behavior of polypyrrole-coated cotton fabric undergoing biodegradation in compost-enriched soil

Piccioni,

Varesano,

Tummino

2024

Environ. Res. Commun.

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This study investigated the biodegradation behavior of cotton fabrics treated with polypyrrole, a polymer with conductive and antibacterial properties. Fabric samples were buried in compost-enriched soil for 10, 30 and 90 days. The biodegradation level was initially estimated by a visual inspection of the fibers and by the determination of the fabric weight loss. Other physical-chemical changes of fibers during the biodegradation process were analyzed by microscopy, thermal analyses and infrared spectroscopy. The surface resistivity of the fabrics was also measured. The results obtained comparing the bare cotton samples and the polypyrrole-added ones suggested that, on the one hand, polypyrrole hindered/delayed the biodegradation of cotton in compost-enriched soil, probably exercising its inherent antimicrobial feature during the first period of burial. On the other hand, over time, polypyrrole seemed to represent the first compound attacked by the microorganisms, preserving the cotton substrate. Despite the absence of dedicated literature regarding polypyrrole biodegradation, the mechanism hypothesized in this paper involves the loss of conjugation, as a consequence of de-doping, oxidized functionalities up to local cycle breaking.

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Section: Soil Burial Testmentioning

confidence: 99%

Behavior of polypyrrole-coated cotton fabric undergoing biodegradation in compost-enriched soil

Piccioni,

Varesano,

Tummino

2024

Environ. Res. Commun.

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“…Interestingly, stable AC fiber can undergo total degradation when buried in soil. Mold began to grow on the fiber surface after being buried in soil for 8 days, 46 which increases the burial time. The fiber in its macroscopic form starts to deteriorate after 66 days, eventually fully degrading by day 108 (Figure 5j).…”

Section: Mechanistic Approach Behind the Shape Memory Behaviorsmentioning

confidence: 99%

Easy-Iron Fabrics from Polysaccharide Shape Memory Fiber

Zhu,

Yuan,

Zhu

et al. 2024

ACS Sustainable Chem. Eng.

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Cellulose fabrics easily form wrinkles and need ironing treatment to maintain a flat appearance. However, burns and fire accidents caused by ironing clothes have been reported from time to time, as the recommended ironing temperature for cotton fabric is around 180 °C. Herein, an agarose/cellulose composite fiber with easy ironing was successfully prepared via a wet-spinning method by dissolving both agarose and cellulose in a specifically chosen mixed alkali/urea aqueous solution. The composite fiber exhibited superior mechanical properties, with a tensile strength of 164 MPa. Shape memory responses under the influence of water and heat stimulations indicated that the shape fixation ratios were 97−99 and 75−97%, respectively, and the shape recovery ratios were 80−92 and 67−94%, respectively. The composite fiber fabrics have shorter ironing times (2 s) and lower ironing temperatures (92 °C) compared with the regenerated cellulose fiber fabric. Furthermore, the composite fiber showed good dyeability, robust thermal and chemical stability, and a moderate level of biodegradability, capable of complete biodegradation in natural soil within 108 days. This work provided an avenue for fabricating hydrothermal-responsive shape memory fibers that have great potential application in easy ironing garments.

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“…In recent years, the use of biomass products has led to the development of materials, particularly polysaccharide-based (i.e., sodium alginate, cellulose, chitin, starch) and protein-based (i.e., silk, sericin, zein, keratin, soy protein) materials, with good biocompatibility [28][29][30][31][32][33][34][35]. Among them, wool keratin is a natural animal fiber protein that can be extracted from by-products of the textile industry and used to fabricate materials for biomedical applications [36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Keratin/Copper Complex Electrospun Nanofibers for Antibacterial Treatments: Property Investigation and In Vitro Response

Tummino,

Cruz-Maya,

Varesano

et al. 2024

Materials

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The frontiers of antibacterial materials in the biomedical field are constantly evolving since infectious diseases are a continuous threat to human health. In this work, waste-wool-derived keratin electrospun nanofibers were blended with copper by an optimized impregnation procedure to fabricate antibacterial membranes with intrinsic biological activity, excellent degradability and good cytocompatibility. The keratin/copper complex electrospun nanofibers were multi-analytically characterized and the main differences in their physical–chemical features were related to the crosslinking effect caused by Cu2+. Indeed, copper ions modified the thermal profiles, improving the thermal stability (evaluated by differential scanning calorimetry and thermogravimetry), and changed the infrared vibrational features (determined by infrared spectroscopy) and the chemical composition (studied by an X-ray energy-dispersive spectroscopy probe and optical emission spectrometry). The copper impregnation process also affected the morphology, leading to partial nanofiber swelling, as evidenced by scanning electron microscopy analyses. Then, the membranes were successfully tested as antibacterial materials against gram-negative bacteria, Escherichia coli. Regarding cytocompatibility, in vitro assays performed with L929 cells showed good levels of cell adhesion and proliferation (XTT assay), and no significant cytotoxic effect, in comparison to bare keratin nanofibers. Given these results, the material described in this work can be suitable for use as antibiotic-free fibers for skin wound dressing or membranes for guided tissue regeneration.

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Soybean peroxidase immobilised on cellulose-alginate hydrogels for removal of recalcitrant organic pollutants in water

Abstract: In recent years, bioremediation has become very attractive for environmental applications, especially enzyme-based treatments, since they offer high catalytic capacity with milder reaction conditions, production of nontoxic compounds, and environmental...

Cited by 4 publications

References 58 publications

Behavior of polypyrrole-coated cotton fabric undergoing biodegradation in compost-enriched soil

Behavior of polypyrrole-coated cotton fabric undergoing biodegradation in compost-enriched soil

Easy-Iron Fabrics from Polysaccharide Shape Memory Fiber

Keratin/Copper Complex Electrospun Nanofibers for Antibacterial Treatments: Property Investigation and In Vitro Response

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