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Usala E, Espinosa E, El Arfaoui W, Morcillo-Martín R, Ferrari B, González Z. Antibacterial Aerogels-Based Membranes by Customized Colloidal Functionalization of TEMPO-Oxidized Cellulose Nanofibers Incorporating CuO. Bioengineering (Basel) 2023; 10:1312. [PMID: 38002436 PMCID: PMC10669038 DOI: 10.3390/bioengineering10111312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/03/2023] [Accepted: 11/10/2023] [Indexed: 11/26/2023] Open
Abstract
An innovative colloidal approach is proposed here to carry out the customized functionalization of TEMPO-Oxidized Cellulose Nanofibers (CNF) incorporating non-noble inorganic nanoparticles. A heterocoagulation process is applied between the delignified CNF and as-synthetized CuO nanoparticles (CuO NPs) to formulate mixtures which are used in the preparation of aerogels with antibacterial effect, which could be used to manufacture membranes, filters, foams, etc. The involved components of formulated blending, CNF and CuO NPs, were individually obtained by using a biorefinery strategy for agricultural waste valorization, together with an optimized chemical precipitation, assisted by ultrasounds. The optimization of synthesis parameters for CuO NPs has avoided the presence of undesirable species, which usually requires later thermal treatment with associated costs. The aerogels-based structure, obtained by conventional freeze-drying, acted as 3D support for CuO NPs, providing a good dispersion within the cross-linked structure of the nanocellulose and facilitating direct contact of the antibacterial phase against undesirable microorganisms. All samples showed a positive response against Escherichia coli and Staphylococcus aureus. An increase of the antibacterial response of the aerogels, measured by agar disk diffusion test, has been observed with the increase of CuO NPs incorporated, obtaining the width of the antimicrobial "halo" (nwhalo) from 0 to 0.6 and 0.35 for S. aureus and E. coli, respectively. Furthermore, the aerogels have been able to deactivate S. aureus and E. coli in less than 5 h when the antibacterial assays have been analyzed by a broth dilution method. From CNF-50CuO samples, an overlap in the nanoparticle effect produced a decrease of the antimicrobial kinetic.
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Affiliation(s)
- Elena Usala
- BioPren Group (RNM940), Chemical Engineering Department, Instituto Químico Para la Energía y el Medioambiente (IQUEMA), Faculty of Science, Universidad de Córdoba (UCO), 14014 Córdoba, Spain; (E.U.); (E.E.); (R.M.-M.)
| | - Eduardo Espinosa
- BioPren Group (RNM940), Chemical Engineering Department, Instituto Químico Para la Energía y el Medioambiente (IQUEMA), Faculty of Science, Universidad de Córdoba (UCO), 14014 Córdoba, Spain; (E.U.); (E.E.); (R.M.-M.)
- Unidad Asociada CSIC-UCO, Fabricación Aditiva de Materiales Compuestos Basados en Celulosa Funcionalizada, Obtenida de Residuos de Biomasa, 14014 Córdoba, Spain;
| | - Wasim El Arfaoui
- BioPren Group (RNM940), Chemical Engineering Department, Instituto Químico Para la Energía y el Medioambiente (IQUEMA), Faculty of Science, Universidad de Córdoba (UCO), 14014 Córdoba, Spain; (E.U.); (E.E.); (R.M.-M.)
| | - Ramón Morcillo-Martín
- BioPren Group (RNM940), Chemical Engineering Department, Instituto Químico Para la Energía y el Medioambiente (IQUEMA), Faculty of Science, Universidad de Córdoba (UCO), 14014 Córdoba, Spain; (E.U.); (E.E.); (R.M.-M.)
| | - Begoña Ferrari
- Unidad Asociada CSIC-UCO, Fabricación Aditiva de Materiales Compuestos Basados en Celulosa Funcionalizada, Obtenida de Residuos de Biomasa, 14014 Córdoba, Spain;
- Instituto de Cerámica y Vidrio, Consejo Superior de Investigaciones Científicas (CSIC), Campus de Cantoblanco, c/Kelsen 5, 28049 Madrid, Spain
| | - Zoilo González
- BioPren Group (RNM940), Chemical Engineering Department, Instituto Químico Para la Energía y el Medioambiente (IQUEMA), Faculty of Science, Universidad de Córdoba (UCO), 14014 Córdoba, Spain; (E.U.); (E.E.); (R.M.-M.)
- Unidad Asociada CSIC-UCO, Fabricación Aditiva de Materiales Compuestos Basados en Celulosa Funcionalizada, Obtenida de Residuos de Biomasa, 14014 Córdoba, Spain;
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Ragazzini I, Gualandi I, D'Altri G, Di Matteo V, Yeasmin L, Cassani MC, Scavetta E, Bernardi E, Ballarin B. Polyaniline/poly (2-acrylamido-2-methyl-1-propanesulfonic acid) modified cellulose as promising material for sensors design. Carbohydr Polym 2023; 316:121079. [PMID: 37321752 DOI: 10.1016/j.carbpol.2023.121079] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 05/26/2023] [Accepted: 05/29/2023] [Indexed: 06/17/2023]
Abstract
A material based on cellulose coated with polyaniline/poly (2-acrylamido-2-methyl-1-propanesulfonic acid) (Cell/PANI-PAMPSA) was synthesized in a simple way starting from cellulose fibres, aniline and using PAMPSA as dopant. The morphology, mechanical properties, thermal stability, and electrical conductivity were investigated by means of several complementary techniques. The obtained results highlight the excellent features of the Cell/PANI-PAMPSA composite with respect to the Cell/PANI one. Based on the promising performance of this material, novel device functions and wearable applications have been tested. We focused on its possible single use as: i) humidity sensors and ii) disposable biomedical sensors to provide immediate diagnostic services as close to the patient as possible for heart rate or respiration activity monitoring. To our knowledge, this is the first time that Cell/PANI-PAMPSA system has been used for such applications.
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Affiliation(s)
- I Ragazzini
- Department of Industrial Chemistry "Toso Montanari", Bologna University, UdR INSTM of Bologna, Via Risorgimento 4, I-40136, Bologna, Italy
| | - I Gualandi
- Department of Industrial Chemistry "Toso Montanari", Bologna University, UdR INSTM of Bologna, Via Risorgimento 4, I-40136, Bologna, Italy; Center for Industrial Research-Fonti Rinnovabili, Ambiente, Mare e Energia CIRI FRAME University of Bologna, Viale del Risorgimento 2, I-40136 Bologna, Italy.
| | - G D'Altri
- Department of Industrial Chemistry "Toso Montanari", Bologna University, UdR INSTM of Bologna, Via Risorgimento 4, I-40136, Bologna, Italy
| | - V Di Matteo
- Department of Industrial Chemistry "Toso Montanari", Bologna University, UdR INSTM of Bologna, Via Risorgimento 4, I-40136, Bologna, Italy
| | - L Yeasmin
- Department of Industrial Chemistry "Toso Montanari", Bologna University, UdR INSTM of Bologna, Via Risorgimento 4, I-40136, Bologna, Italy
| | - M C Cassani
- Department of Industrial Chemistry "Toso Montanari", Bologna University, UdR INSTM of Bologna, Via Risorgimento 4, I-40136, Bologna, Italy; Center for Industrial Research-Advanced Applications in Mechanical Engineering and Materials Technology CIRI MAM University of Bologna, Viale del Risorgimento 2, I-40136 Bologna, Italy
| | - E Scavetta
- Department of Industrial Chemistry "Toso Montanari", Bologna University, UdR INSTM of Bologna, Via Risorgimento 4, I-40136, Bologna, Italy
| | - E Bernardi
- Department of Industrial Chemistry "Toso Montanari", Bologna University, UdR INSTM of Bologna, Via Risorgimento 4, I-40136, Bologna, Italy; Center for Industrial Research-Fonti Rinnovabili, Ambiente, Mare e Energia CIRI FRAME University of Bologna, Viale del Risorgimento 2, I-40136 Bologna, Italy
| | - B Ballarin
- Department of Industrial Chemistry "Toso Montanari", Bologna University, UdR INSTM of Bologna, Via Risorgimento 4, I-40136, Bologna, Italy; Center for Industrial Research-Advanced Applications in Mechanical Engineering and Materials Technology CIRI MAM University of Bologna, Viale del Risorgimento 2, I-40136 Bologna, Italy; Center for Industrial Research-Fonti Rinnovabili, Ambiente, Mare e Energia CIRI FRAME University of Bologna, Viale del Risorgimento 2, I-40136 Bologna, Italy.
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Rincón E, De Haro-Niza J, Morcillo-Martín R, Espinosa E, Rodríguez A. Boosting functional properties of active-CMC films reinforced with agricultural residues-derived cellulose nanofibres. RSC Adv 2023; 13:24755-24766. [PMID: 37601591 PMCID: PMC10437095 DOI: 10.1039/d3ra04003h] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 07/31/2023] [Indexed: 08/22/2023] Open
Abstract
The search for packaging alternatives that reduce the presence of non-biodegradable plastics in water is a focus of much research today. This fact, together with the increasing demand for active packaging capable of prolonging the shelf life of foodstuffs and the rise in the use of natural biopolymers such as cellulose, motivate the present work. This work evaluates CMC films loaded with gallic acid reinforced with (ligno)cellulose nanofibres from various agricultural residues as candidates for use in active food packaging. The first stage of the study involved the evaluation of different nanofibres as the reinforcing agent in CMC films. Increasing proportions of nanofibres (1, 3, 5 and 10% w/w) from horticultural residues (H) and nanofibres from vine shoots (V), containing residual lignin (LCNF) and without it (CNF), and obtained by mechanical (M) or chemical (T) pretreatment, were studied. The results of this first stage showed that the optimum reinforcement effect was obtained with 3% H-MCNF or 3% V-MCNF, where up to 391% and 286% improvement in tensile strength was achieved, respectively. These films offered slightly improved UV-light blocking ability (40-55% UV-barrier) and water vapor permeability (20-30% improvement) over CMC. Next, bioactive films were prepared by incorporating 5 and 10% wt of gallic acid (GA) over the optimised formulations. It was found that the joint addition of cellulose nanofibres and GA enhanced all functional properties of the films. Mechanical properties improved to 70%, WVP to 50% and UV light blocking ability to 70% due to the synergistic effect of nanofibres and GA. Finally, the bioactive films exhibited potent antioxidant activity, 60-70% in the DPPH assay and >99% in the ABTS assay and high antimicrobial capacity against S. aureus.
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Affiliation(s)
- Esther Rincón
- BioPrEn Group (RNM940), Chemical Engineering Department, Faculty of Science, Instituto Químico para la Energía y el Medioambiente (IQUEMA), Universidad de Córdoba 14014 Córdoba Spain
| | - Jorge De Haro-Niza
- BioPrEn Group (RNM940), Chemical Engineering Department, Faculty of Science, Instituto Químico para la Energía y el Medioambiente (IQUEMA), Universidad de Córdoba 14014 Córdoba Spain
- Department of Food Science and Technology, Faculty of Veterinary, Universidad de Córdoba 14014 Córdoba Spain
| | - Ramón Morcillo-Martín
- BioPrEn Group (RNM940), Chemical Engineering Department, Faculty of Science, Instituto Químico para la Energía y el Medioambiente (IQUEMA), Universidad de Córdoba 14014 Córdoba Spain
| | - Eduardo Espinosa
- BioPrEn Group (RNM940), Chemical Engineering Department, Faculty of Science, Instituto Químico para la Energía y el Medioambiente (IQUEMA), Universidad de Córdoba 14014 Córdoba Spain
| | - Alejandro Rodríguez
- BioPrEn Group (RNM940), Chemical Engineering Department, Faculty of Science, Instituto Químico para la Energía y el Medioambiente (IQUEMA), Universidad de Córdoba 14014 Córdoba Spain
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Delgado-Aguilar M, Negro C. Preparation, Characterization and Industrial Application of Nanocellulose. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13101592. [PMID: 37242009 DOI: 10.3390/nano13101592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 05/06/2023] [Indexed: 05/28/2023]
Abstract
The international research community has made significant efforts in the production, characterization, and application of cellulose nanofibers (CNFs) in many sectors [...].
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Affiliation(s)
- Marc Delgado-Aguilar
- LEPAMAP-PRODIS Research Group, University of Girona, C. Maria Aurèlia Capmany, 61, 17003 Girona, Spain
| | - Carlos Negro
- Department of Chemical Engineering and Materials, Complutense University of Madrid, Avda. Complutense s/n, 28040 Madrid, Spain
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