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Wang Q, Zhang S, Jiang J, Chen S, Ramakrishna S, Zhao W, Yang F, Wu S. Electrospun radially oriented berberine-PHBV nanofiber dressing patches for accelerating diabetic wound healing. Regen Biomater 2024; 11:rbae063. [PMID: 38903562 PMCID: PMC11187501 DOI: 10.1093/rb/rbae063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 05/15/2024] [Accepted: 05/23/2024] [Indexed: 06/22/2024] Open
Abstract
A dressing patch made of radially oriented poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) nanofibers was successfully manufactured with a modified electrospinning strategy. The as-electrospun PHBV radially oriented nanofiber dressing patch exhibited uniform and bead-free nanofibrous morphology and innovative radially oriented arrangement, which was demonstrated to possess obviously improved mechanical property, increased surface hydrophilicity and enhanced biological properties compared to the PHBV nanofiber dressing patch control with traditionally randomly oriented pattern. Interestingly, it was found that the radially oriented pattern could induce the cell migration from the periphery to the center along the radially oriented nanofibers in a rapid manner. To further improve the biofunction of PHBV radially oriented nanofiber dressing patch, berberine (Beri, an isoquinoline alkaloid) with two different concentrations were encapsulated into PHBV nanofibers during electrospinning, which were found to present a sustained drug release behavior for nearly one month. Importantly, the addition of Beri could impart the dressing patch with excellent anti-inflammatory property by significantly inhibiting the secretion of pro-inflammatory factors of M1 macrophages, and also showed an additive influence on promoting the proliferation of human dermal fibroblasts (HDFs), as well as inhibiting the growth of E. coli, S. aureus and C. albicans, compared with the Beri-free dressing patch. In the animal studies, the electrospun PHBV radially oriented nanofiber dressing patch loading with high Beri content was found to obviously accelerate the healing process of diabetic mouse full-thickness skin wound with shortened healing time (100% wound closure rate after 18 days' treatment) and improved healing quality (improved collagen deposition, enhanced re-epithelialization and neovascularization and increased hair follicles). In all, this study reported an innovative therapeutic strategy integrating the excellent physical cues of electrospun PHBV radially oriented nanofiber dressing patch with the multiple biological cues of Beri for the effective treatment of hard-to-heal diabetic wounds.
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Affiliation(s)
- Qiuyu Wang
- College of Textiles & Clothing, Qingdao University, Qingdao 266071, China
| | - Sai Zhang
- College of Textile and Clothing, Dezhou University, Dezhou 253023, China
| | - Jiayi Jiang
- College of Textiles & Clothing, Qingdao University, Qingdao 266071, China
| | - Shaojuan Chen
- College of Textiles & Clothing, Qingdao University, Qingdao 266071, China
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, Center for Nanotechnology & Sustainability, College of Design and Engineering, National University of Singapore, Singapore 117576, Singapore
| | - Wenwen Zhao
- School of Basic Medicine, Qingdao University, Qingdao 266071, China
| | - Fan Yang
- College of Textile and Clothing, Dezhou University, Dezhou 253023, China
| | - Shaohua Wu
- College of Textiles & Clothing, Qingdao University, Qingdao 266071, China
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China
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Martín-González D, de la Fuente Tagarro C, De Lucas A, Bordel S, Santos-Beneit F. Genetic Modifications in Bacteria for the Degradation of Synthetic Polymers: A Review. Int J Mol Sci 2024; 25:5536. [PMID: 38791573 PMCID: PMC11121894 DOI: 10.3390/ijms25105536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 05/07/2024] [Accepted: 05/17/2024] [Indexed: 05/26/2024] Open
Abstract
Synthetic polymers, commonly known as plastics, are currently present in all aspects of our lives. Although they are useful, they present the problem of what to do with them after their lifespan. There are currently mechanical and chemical methods to treat plastics, but these are methods that, among other disadvantages, can be expensive in terms of energy or produce polluting gases. A more environmentally friendly alternative is recycling, although this practice is not widespread. Based on the practice of the so-called circular economy, many studies are focused on the biodegradation of these polymers by enzymes. Using enzymes is a harmless method that can also generate substances with high added value. Novel and enhanced plastic-degrading enzymes have been obtained by modifying the amino acid sequence of existing ones, especially on their active site, using a wide variety of genetic approaches. Currently, many studies focus on the common aim of achieving strains with greater hydrolytic activity toward a different range of plastic polymers. Although in most cases the depolymerization rate is improved, more research is required to develop effective biodegradation strategies for plastic recycling or upcycling. This review focuses on a compilation and discussion of the most important research outcomes carried out on microbial biotechnology to degrade and recycle plastics.
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Affiliation(s)
- Diego Martín-González
- Department of Chemical Engineering and Environmental Technology, School of Industrial Engineering, University of Valladolid, Dr. Mergelina, s/n, 47011 Valladolid, Spain; (D.M.-G.); (A.D.L.); (S.B.)
| | - Carlos de la Fuente Tagarro
- Department of Chemical Engineering and Environmental Technology, School of Industrial Engineering, University of Valladolid, Dr. Mergelina, s/n, 47011 Valladolid, Spain; (D.M.-G.); (A.D.L.); (S.B.)
| | - Andrea De Lucas
- Department of Chemical Engineering and Environmental Technology, School of Industrial Engineering, University of Valladolid, Dr. Mergelina, s/n, 47011 Valladolid, Spain; (D.M.-G.); (A.D.L.); (S.B.)
| | - Sergio Bordel
- Department of Chemical Engineering and Environmental Technology, School of Industrial Engineering, University of Valladolid, Dr. Mergelina, s/n, 47011 Valladolid, Spain; (D.M.-G.); (A.D.L.); (S.B.)
- Institute of Sustainable Processes, Dr. Mergelina s/n, 47011 Valladolid, Spain
| | - Fernando Santos-Beneit
- Department of Chemical Engineering and Environmental Technology, School of Industrial Engineering, University of Valladolid, Dr. Mergelina, s/n, 47011 Valladolid, Spain; (D.M.-G.); (A.D.L.); (S.B.)
- Institute of Sustainable Processes, Dr. Mergelina s/n, 47011 Valladolid, Spain
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Gonçalves LFFF, Reis RL, Fernandes EM. Forefront Research of Foaming Strategies on Biodegradable Polymers and Their Composites by Thermal or Melt-Based Processing Technologies: Advances and Perspectives. Polymers (Basel) 2024; 16:1286. [PMID: 38732755 PMCID: PMC11085284 DOI: 10.3390/polym16091286] [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: 01/12/2024] [Revised: 04/13/2024] [Accepted: 04/26/2024] [Indexed: 05/13/2024] Open
Abstract
The last few decades have witnessed significant advances in the development of polymeric-based foam materials. These materials find several practical applications in our daily lives due to their characteristic properties such as low density, thermal insulation, and porosity, which are important in packaging, in building construction, and in biomedical applications, respectively. The first foams with practical applications used polymeric materials of petrochemical origin. However, due to growing environmental concerns, considerable efforts have been made to replace some of these materials with biodegradable polymers. Foam processing has evolved greatly in recent years due to improvements in existing techniques, such as the use of supercritical fluids in extrusion foaming and foam injection moulding, as well as the advent or adaptation of existing techniques to produce foams, as in the case of the combination between additive manufacturing and foam technology. The use of supercritical CO2 is especially advantageous in the production of porous structures for biomedical applications, as CO2 is chemically inert and non-toxic; in addition, it allows for an easy tailoring of the pore structure through processing conditions. Biodegradable polymeric materials, despite their enormous advantages over petroleum-based materials, present some difficulties regarding their potential use in foaming, such as poor melt strength, slow crystallization rate, poor processability, low service temperature, low toughness, and high brittleness, which limits their field of application. Several strategies were developed to improve the melt strength, including the change in monomer composition and the use of chemical modifiers and chain extenders to extend the chain length or create a branched molecular structure, to increase the molecular weight and the viscosity of the polymer. The use of additives or fillers is also commonly used, as fillers can improve crystallization kinetics by acting as crystal-nucleating agents. Alternatively, biodegradable polymers can be blended with other biodegradable polymers to combine certain properties and to counteract certain limitations. This work therefore aims to provide the latest advances regarding the foaming of biodegradable polymers. It covers the main foaming techniques and their advances and reviews the uses of biodegradable polymers in foaming, focusing on the chemical changes of polymers that improve their foaming ability. Finally, the challenges as well as the main opportunities presented reinforce the market potential of the biodegradable polymer foam materials.
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Affiliation(s)
- Luis F. F. F. Gonçalves
- 3B’s Research Group, I3Bs–Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, 4805-017 Guimarães, Portugal;
- ICVS/3B’s—PT Government Associate Laboratory, Barco, 4805-017 Guimarães, Portugal
| | - Rui L. Reis
- 3B’s Research Group, I3Bs–Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, 4805-017 Guimarães, Portugal;
- ICVS/3B’s—PT Government Associate Laboratory, Barco, 4805-017 Guimarães, Portugal
| | - Emanuel M. Fernandes
- 3B’s Research Group, I3Bs–Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, 4805-017 Guimarães, Portugal;
- ICVS/3B’s—PT Government Associate Laboratory, Barco, 4805-017 Guimarães, Portugal
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Amabile C, Abate T, Marcos E, Chianese S, Musmarra D, Muñoz R. Exploring New Strategies for Optimizing the Production of Poly(3-hydroxybutyrate- co-3-hydroxyvalerate) from Methane and VFAs in Synthetic Cocultures and Mixed Methanotrophic Consortia. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2024; 12:4690-4699. [PMID: 38516398 PMCID: PMC10954047 DOI: 10.1021/acssuschemeng.3c08570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/19/2024] [Accepted: 02/21/2024] [Indexed: 03/23/2024]
Abstract
In this work, the potential of a synthetic coculture and a mixed methanotrophic consortium to synthesize poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) from renewable and waste-based feedstocks was assessed batchwise. Methylocystis parvuscocultivated with Rhodococcus opacus and a Methylocystis-enriched culture previously grown on methane were subjected to nutrient starvation in a medium enriched with valeric acid (30% w w-1 of Ctot) or with a VFAs mixture containing acetic, propionic, butyric, and valeric acids (15% w w-1 of Ctot) under a CH4:O2 or air atmosphere. For all test series, pH was adjusted to 7 after adding the cosubstrates, and a negligible substrate consumption or polymer production was considered the end point of the trial. Results showed that valeric acid promoted PHBV accumulation in both cultures regardless of the atmosphere. Interestingly, the mixture of VFAs supported PHBV accumulation only in the presence of methane. The highest PHBV contents for the coculture and the mixed consortium, equal to 73.7 ± 2.5% w w-1 and 49.6 ± 13% w w-1, respectively, were obtained with methane and the VFAs mixture. This study demonstrates the suitability of cocultures and biobased cosubstrates for the sustainable production of the biodegradable polymer PHBV.
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Affiliation(s)
- Claudia Amabile
- Department
of Engineering, University of Campania “Luigi
Vanvitelli”, Via Roma 29, Aversa 81031, Italy
- Institute
of Sustainable Processes, University of
Valladolid, Dr. Mergelina,
s/n, Valladolid 47011, Spain
| | - Teresa Abate
- Department
of Engineering, University of Campania “Luigi
Vanvitelli”, Via Roma 29, Aversa 81031, Italy
- Institute
of Sustainable Processes, University of
Valladolid, Dr. Mergelina,
s/n, Valladolid 47011, Spain
| | - Enrique Marcos
- Institute
of Sustainable Processes, University of
Valladolid, Dr. Mergelina,
s/n, Valladolid 47011, Spain
| | - Simeone Chianese
- Department
of Engineering, University of Campania “Luigi
Vanvitelli”, Via Roma 29, Aversa 81031, Italy
| | - Dino Musmarra
- Department
of Engineering, University of Campania “Luigi
Vanvitelli”, Via Roma 29, Aversa 81031, Italy
| | - Raul Muñoz
- Institute
of Sustainable Processes, University of
Valladolid, Dr. Mergelina,
s/n, Valladolid 47011, Spain
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5
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Sacchi M, Sauter-Starace F, Mailley P, Texier I. Resorbable conductive materials for optimally interfacing medical devices with the living. Front Bioeng Biotechnol 2024; 12:1294238. [PMID: 38449676 PMCID: PMC10916519 DOI: 10.3389/fbioe.2024.1294238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 01/02/2024] [Indexed: 03/08/2024] Open
Abstract
Implantable and wearable bioelectronic systems are arising growing interest in the medical field. Linking the microelectronic (electronic conductivity) and biological (ionic conductivity) worlds, the biocompatible conductive materials at the electrode/tissue interface are key components in these systems. We herein focus more particularly on resorbable bioelectronic systems, which can safely degrade in the biological environment once they have completed their purpose, namely, stimulating or sensing biological activity in the tissues. Resorbable conductive materials are also explored in the fields of tissue engineering and 3D cell culture. After a short description of polymer-based substrates and scaffolds, and resorbable electrical conductors, we review how they can be combined to design resorbable conductive materials. Although these materials are still emerging, various medical and biomedical applications are already taking shape that can profoundly modify post-operative and wound healing follow-up. Future challenges and perspectives in the field are proposed.
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Affiliation(s)
- Marta Sacchi
- Université Grenoble Alpes, CEA, LETI-DTIS (Département des Technologies pour l’Innovation en Santé), Grenoble, France
- Université Paris-Saclay, CEA, JACOB-SEPIA, Fontenay-aux-Roses, France
| | - Fabien Sauter-Starace
- Université Grenoble Alpes, CEA, LETI-DTIS (Département des Technologies pour l’Innovation en Santé), Grenoble, France
| | - Pascal Mailley
- Université Grenoble Alpes, CEA, LETI-DTIS (Département des Technologies pour l’Innovation en Santé), Grenoble, France
| | - Isabelle Texier
- Université Grenoble Alpes, CEA, LETI-DTIS (Département des Technologies pour l’Innovation en Santé), Grenoble, France
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Bernabé I, Amarilla E, de la Orden MU, Martínez Urreaga J, Beltrán FR. Effect of oligomeric lactic acid plasticizer on the mechanical recycling of poly(3-hydroxybutyrate-co-3-hydroxyvalerate). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-023-31758-0. [PMID: 38214860 DOI: 10.1007/s11356-023-31758-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 12/23/2023] [Indexed: 01/13/2024]
Abstract
Bioplastics such as polyhydroxyalkanoates (PHA) emerge as an interesting alternative to conventional fossil fuel-based plastics and as part of the solution their associated environmental issues. Nevertheless, end-of-life scenarios are still a major concern, especially within a circular economy framework. When feasible, mechanical recycling appears as the best alternative, since it saves raw materials and energy. However, the viability of mechanical recycling can be compromised by the degradation of the plastic during its use and during the recycling process and by the presence of certain additives. Consequently, the main objective of this work is to study the effect of accelerated ageing and mechanical recycling on the structure and properties of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)-based formulations. The obtained results suggest that accelerated ageing and mechanical recycling led only to a slight degradation of the pure PHBV material, along with small variations in the thermal and mechanical properties. However, the plasticized PHBV formulations showed a more severe degradation and increased thermal stability and stiffness, which could be result of the elimination of the plasticizer during the recycling. Overall, mechanical recycling seems to be an interesting valorization strategy for PHBV wastes, although especial attention should be paid to the additives present in the materials.
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Affiliation(s)
- Ignacio Bernabé
- Departamento de Ingeniería Química Industrial y Medio Ambiente, ETSI Industriales, Universidad Politécnica de Madrid, 28006, Madrid, Spain
- Research Group: "Polímeros, Caracterización y Aplicaciones (POLCA)", 28006, Madrid, Spain
| | - Erika Amarilla
- Departamento de Ingeniería Química Industrial y Medio Ambiente, ETSI Industriales, Universidad Politécnica de Madrid, 28006, Madrid, Spain
| | - María Ulagares de la Orden
- Research Group: "Polímeros, Caracterización y Aplicaciones (POLCA)", 28006, Madrid, Spain
- Departamento Química Orgánica I, Facultad de Óptica y Optometría, Universidad Complutense de Madrid, 28037, Madrid, Spain
| | - Joaquín Martínez Urreaga
- Departamento de Ingeniería Química Industrial y Medio Ambiente, ETSI Industriales, Universidad Politécnica de Madrid, 28006, Madrid, Spain
- Research Group: "Polímeros, Caracterización y Aplicaciones (POLCA)", 28006, Madrid, Spain
| | - Freddys R Beltrán
- Departamento de Ingeniería Química Industrial y Medio Ambiente, ETSI Industriales, Universidad Politécnica de Madrid, 28006, Madrid, Spain.
- Research Group: "Polímeros, Caracterización y Aplicaciones (POLCA)", 28006, Madrid, Spain.
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7
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Liu Y, Wang Y, Lee CH, Kan CW, Lu X. Influence of Electrospinning Parameters on the Morphology of Electrospun Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Fibrous Membranes and Their Application as Potential Air Filtration Materials. Polymers (Basel) 2024; 16:154. [PMID: 38201819 PMCID: PMC10780722 DOI: 10.3390/polym16010154] [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: 10/26/2023] [Revised: 12/27/2023] [Accepted: 12/27/2023] [Indexed: 01/12/2024] Open
Abstract
A large number of non-degradable materials have severely damaged the ecological environment. Now, people are increasingly pursuing the use of environmentally friendly materials to replace traditional chemical materials. Polyhydroxyalkonates (PHAs) are receiving increasing attention because of the unique biodegradability and biocompatibility they offer. However, the applications of PHAs are still limited due to high production costs and insufficient study. This project examines the optimal electrospinning parameters for the production of PHA-based fibrous membranes for air filtration. A common biodegradable polyester, Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), was electrospun into a nanofibrous membrane with a well-controlled surface microstructure. In order to produce smooth, bead-free fibers with micron-scale diameters, the effect of the process parameters (applied electric field, solution flow rate, inner diameter of hollow needle, and polymer concentration) on the electrospun fiber microstructure was optimized. The well-defined fibrous structure was optimized at an applied electric field of 20 kV, flow rate of 0.5 mL/h, solution concentration of 12 wt.%, and needle inner diameter of 0.21 mm. The morphology of the electrospun PHBV fibrous membrane was observed by scanning electron microscopy (SEM). Fourier transform infrared (FTIR) and Raman spectroscopy were used to explore the chemical signatures and phases of the electrospun PHBV nanofiber. The ball burst strength (BBS) was measured to assess the mechanical strength of the membrane. The small pore size of the nanofiber membranes ensured they had good application prospects in the field of air filtration. The particle filtration efficiency (PFE) of the optimized electrospun PHBV fibrous membrane was above 98% at standard atmospheric pressure.
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Affiliation(s)
- Yaohui Liu
- Faculty of Science and Technology, Technological and Higher Education Institute of Hong Kong, Tsing Yi, New Territories, Hong Kong, China; (Y.W.); (X.L.)
| | - Yanming Wang
- Faculty of Science and Technology, Technological and Higher Education Institute of Hong Kong, Tsing Yi, New Territories, Hong Kong, China; (Y.W.); (X.L.)
| | - Cheng-Hao Lee
- School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China;
| | - Chi-Wai Kan
- School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China;
| | - Xiaoying Lu
- Faculty of Science and Technology, Technological and Higher Education Institute of Hong Kong, Tsing Yi, New Territories, Hong Kong, China; (Y.W.); (X.L.)
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8
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Jin A, del Valle LJ, Puiggalí J. Copolymers and Blends Based on 3-Hydroxybutyrate and 3-Hydroxyvalerate Units. Int J Mol Sci 2023; 24:17250. [PMID: 38139077 PMCID: PMC10743438 DOI: 10.3390/ijms242417250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 11/29/2023] [Accepted: 12/05/2023] [Indexed: 12/24/2023] Open
Abstract
This review presents a comprehensive update of the biopolymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), emphasizing its production, properties, and applications. The overall biosynthesis pathway of PHBV is explored in detail, highlighting recent advances in production techniques. The inherent physicochemical properties of PHBV, along with its degradation behavior, are discussed in detail. This review also explores various blends and composites of PHBV, demonstrating their potential for a range of applications. Finally, the versatility of PHBV-based materials in multiple sectors is examined, emphasizing their increasing importance in the field of biodegradable polymers.
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Affiliation(s)
- Anyi Jin
- Departament d’Enginyeria Química, Universitat Politècnica de Catalunya, EEBE, Av. Eduard Maristany 10-14, 08019 Barcelona, Spain; (A.J.); (L.J.d.V.)
- Venvirotech Biotechnology S.L., Santa Perpètua de Mogoda, 08130 Barcelona, Spain
| | - Luis J. del Valle
- Departament d’Enginyeria Química, Universitat Politècnica de Catalunya, EEBE, Av. Eduard Maristany 10-14, 08019 Barcelona, Spain; (A.J.); (L.J.d.V.)
- Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Campus Diagonal-Besòs, Av. Eduard Maristany 10-14, 08019 Barcelona, Spain
| | - Jordi Puiggalí
- Departament d’Enginyeria Química, Universitat Politècnica de Catalunya, EEBE, Av. Eduard Maristany 10-14, 08019 Barcelona, Spain; (A.J.); (L.J.d.V.)
- Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Campus Diagonal-Besòs, Av. Eduard Maristany 10-14, 08019 Barcelona, Spain
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9
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Tubio CR, Valle X, Carvalho E, Moreira J, Costa P, Correia DM, Lanceros-Mendez S. Poly(3-hydroxybutyrate- co-3-hydroxyvalerate) Blends with Poly(caprolactone) and Poly(lactic acid): A Comparative Study. Polymers (Basel) 2023; 15:4566. [PMID: 38232003 PMCID: PMC10708000 DOI: 10.3390/polym15234566] [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: 10/11/2023] [Revised: 11/13/2023] [Accepted: 11/27/2023] [Indexed: 01/19/2024] Open
Abstract
Poly(hydroxybutyrate-co-hidroxyvalerate) (PHBV) is a biodegradable polymer, which is a potential substitute for plastics made from fossil resources. Due to its practical interest in the field of tissue engineering, packaging, sensors, and electronic devices, the demand for PHBV with specific thermal, electrical, as well as mechanical requirements is growing. In order to improve these properties, we have developed PHBV blends with two thermoplastic biodegradable polyesters, including poly(caprolactone) (PCL) and poly(lactic acid) (PLA). We analysed the effect of these biopolymers on the morphological, wetting, structural, thermal, mechanical, and electrical characteristics of the materials. Further, the biodegradation of the samples in simulated body fluid conditions was evaluated, as well as the antibacterial activity. The results demonstrate that the blending with PCL and PLA leads to films with a dense morphology, increases the hydrophilic character, and induces a reinforcement of the mechanical characteristics with respect to pristine PHBV. In addition, a decrease in dielectric constant and a.c. electrical conductivity was noticed for PHBV/PLA and PHBV/PCL blends compared to neat PHBV polymer. All neat polymers and blends showed antibacterial properties against S. aureus, with more than 40% bacterial reduction, which increased to 72% in the presence of PCL polymer for a blend ratio of 50/50. Thus, it is demonstrated a suitable way to further tailor a variety of functionalities of PHBV for specific applications, by the development of polymer blends with PLA or PCL.
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Affiliation(s)
- Carmen R. Tubio
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain; (X.V.); (S.L.-M.)
| | - Xabier Valle
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain; (X.V.); (S.L.-M.)
| | - Estela Carvalho
- Physics Center of Minho and Porto Universities (CF-UM-UP) and LaPMET—Laboratory of Physics for Materials and Emergent Technologies, University of Minho, 4710-057 Braga, Portugal; (E.C.); (J.M.); (P.C.)
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, 4710-057 Braga, Portugal
| | - Joana Moreira
- Physics Center of Minho and Porto Universities (CF-UM-UP) and LaPMET—Laboratory of Physics for Materials and Emergent Technologies, University of Minho, 4710-057 Braga, Portugal; (E.C.); (J.M.); (P.C.)
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, 4710-057 Braga, Portugal
| | - Pedro Costa
- Physics Center of Minho and Porto Universities (CF-UM-UP) and LaPMET—Laboratory of Physics for Materials and Emergent Technologies, University of Minho, 4710-057 Braga, Portugal; (E.C.); (J.M.); (P.C.)
| | | | - Senentxu Lanceros-Mendez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain; (X.V.); (S.L.-M.)
- Physics Center of Minho and Porto Universities (CF-UM-UP) and LaPMET—Laboratory of Physics for Materials and Emergent Technologies, University of Minho, 4710-057 Braga, Portugal; (E.C.); (J.M.); (P.C.)
- IKERBASQUE, Basque Foundation for Science, 48009 Bilbao, Spain
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Frank C, Emmerstorfer-Augustin A, Rath T, Trimmel G, Nachtnebel M, Stelzer F. Bio-Polyester/Rubber Compounds: Fabrication, Characterization, and Biodegradation. Polymers (Basel) 2023; 15:2593. [PMID: 37376240 DOI: 10.3390/polym15122593] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 05/23/2023] [Accepted: 05/26/2023] [Indexed: 06/29/2023] Open
Abstract
Biobased and biodegradable polymers (BBDs) such as poly(3-hydroxy-butyrate), PHB, and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) are considered attractive alternatives to fossil-based plastic materials since they are more environmentally friendly. One major problem with these compounds is their high crystallinity and brittleness. In order to generate softer materials without using fossil-based plasticizers, the suitability of natural rubber (NR) as an impact modifier was investigated in PHBV blends. Mixtures with varying proportions of NR and PHBV were generated, and samples were prepared by mechanical mixing (roll mixer and/or internal mixer) and cured by radical C-C crosslinking. The obtained specimens were investigated with respect to their chemical and physical characteristics, applying a variety of different methods such as size exclusion chromatography, Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermal analysis, XRD, and mechanical testing. Our results clearly indicate that NR-PHBV blends exhibit excellent material characteristics including high elasticity and durability. Additionally, biodegradability was tested by applying heterologously produced and purified depolymerases. pH shift assays and morphology analyses of the surface of depolymerase-treated NR-PHBV through electron scanning microscopy confirmed the enzymatic degradation of PHBV. Altogether, we prove that NR is highly suitable to substitute fossil-based plasticizers; NR-PHBV blends are biodegradable and, hence, should be considered as interesting materials for a great number of applications.
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Affiliation(s)
- Carina Frank
- Acib-GmbH, Krenngasse 32, A-8010 Graz, Austria
- Institute for Chemistry and Technology of Materials, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Anita Emmerstorfer-Augustin
- Acib-GmbH, Krenngasse 32, A-8010 Graz, Austria
- Institute for Molecular Biotechnology, Graz University of Technology, NAWI Graz, BioTechMed-Graz, Petersgasse 14, A-8010 Graz, Austria
| | - Thomas Rath
- Institute for Chemistry and Technology of Materials, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Gregor Trimmel
- Institute for Chemistry and Technology of Materials, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Manfred Nachtnebel
- Graz Centre for Electron Microscopy, Steyrergasse 17, A-8010 Graz, Austria
| | - Franz Stelzer
- Acib-GmbH, Krenngasse 32, A-8010 Graz, Austria
- Institute for Chemistry and Technology of Materials, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
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11
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de Lima LF, Lopes Ferreira A, Martinez de Freitas ADS, de Souza Rodrigues J, Lemes AP, Ferreira M, de Araujo WR. Biodegradable and Flexible Thermoplastic Composite Graphite Electrodes: A Promising Platform for Inexpensive and Sensitive Electrochemical Detection of Creatine Kinase at the Point-of-Care. ACS APPLIED MATERIALS & INTERFACES 2023; 15:18694-18706. [PMID: 37014991 DOI: 10.1021/acsami.3c01379] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Acute myocardial infarction (AMI) is the main cause of death worldwide, and the time of diagnosis is decisive for the effectiveness of the treatment of patients with AMI. Creatine kinase-myocardial band (CK-MB) has a predominance and high affinity with myocardial tissue, making it considered one of the main biomarkers for the diagnosis of AMI. In this work, we report a novel biodegradable composite material based on a polymer blend of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and Poly(butylene adipate-co-terephthalate) (PHBV:Ecoflex) and graphite microparticles for sensitive and selective electrochemical detection of CK-MB. The morphological and physicochemical characterizations of the thermoplastic composite material revealed a homogeneous and synergistic distribution of the graphite microparticles through the blend structure, providing low defects and high electrical conductivity with high electron transfer kinetics (k0 = 3.54 × 10-3 cm s-1) features with adequate flexibility for point-of-care applications. The portable and disposable devices were applied to detect CK-MB using the electrochemical impedance spectroscopy (EIS) technique in a relevant clinical concentration ranging from 5.0 ng mL-1 to 100.0 ng mL-1 and presented a limit of detection of 0.26 ng mL-1 CK-MB. The selectivity of the sensor was confirmed by testing the potential interference of major biomolecules found in biofluids and other relevant macromolecules. The accuracy and robustness were assessed by addition and recovery protocol in urine and saliva samples without sample pretreatment and demonstrated the potential of our method for rapid and decentralized tests of AMI. In addition, the study of the thermal, biological, and photodegradation of the devices after being used was also carried out, aiming at the disposal of the material more sustainably.
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Affiliation(s)
- Lucas Felipe de Lima
- Portable Chemical Sensors Lab, Department of Analytical Chemistry, Institute of Chemistry, State University of Campinas (UNICAMP), 13083-970, Campinas, São Paulo, Brazil
| | - André Lopes Ferreira
- Portable Chemical Sensors Lab, Department of Analytical Chemistry, Institute of Chemistry, State University of Campinas (UNICAMP), 13083-970, Campinas, São Paulo, Brazil
| | - Amanda de Sousa Martinez de Freitas
- Polymers and Biopolymers Technology Lab. (TecPBio), Institute of Science and Technology (ICT), Federal University of São Paulo (UNIFESP), 12231-280, São José dos Campos, São Paulo, Brazil
| | - Jéssica de Souza Rodrigues
- Center of Science and Technology for Sustainability (CCTS), Federal University of São Carlos (UFSCar), 18052-780, Sorocaba, São Paulo, Brazil
| | - Ana Paula Lemes
- Polymers and Biopolymers Technology Lab. (TecPBio), Institute of Science and Technology (ICT), Federal University of São Paulo (UNIFESP), 12231-280, São José dos Campos, São Paulo, Brazil
| | - Marystela Ferreira
- Center of Science and Technology for Sustainability (CCTS), Federal University of São Carlos (UFSCar), 18052-780, Sorocaba, São Paulo, Brazil
| | - William Reis de Araujo
- Portable Chemical Sensors Lab, Department of Analytical Chemistry, Institute of Chemistry, State University of Campinas (UNICAMP), 13083-970, Campinas, São Paulo, Brazil
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12
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Aparicio-Collado JL, Zheng Q, Molina-Mateo J, Torregrosa Cabanilles C, Vidaurre A, Serrano-Aroca Á, Sabater i Serra R. Engineered Highly Porous Polyvinyl Alcohol Hydrogels with Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and Graphene Nanosheets for Musculoskeletal Tissue Engineering: Morphology, Water Sorption, Thermal, Mechanical, Electrical Properties, and Biocompatibility. MATERIALS (BASEL, SWITZERLAND) 2023; 16:3114. [PMID: 37109950 PMCID: PMC10145967 DOI: 10.3390/ma16083114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/12/2023] [Accepted: 04/13/2023] [Indexed: 06/19/2023]
Abstract
Electroactive composite materials are very promising for musculoskeletal tissue engineering because they can be applied in combination with electrostimulation. In this context, novel graphene-based poly(3-hydroxybutyrate-co-3-hydroxyvalerate)/polyvinyl alcohol (PHBV/PVA) semi-interpenetrated networks (semi-IPN) hydrogels were engineered with low amounts of graphene (G) nanosheets dispersed within the polymer matrix to endow them with electroactive properties. The nanohybrid hydrogels, obtained by applying a hybrid solvent casting-freeze-drying method, show an interconnected porous structure and a high water-absorption capacity (swelling degree > 1200%). The thermal characterization indicates that the structure presents microphase separation, with PHBV microdomains located between the PVA network. The PHBV chains located in the microdomains are able to crystallize; even more after the addition of G nanosheets, which act as a nucleating agent. Thermogravimetric analysis indicates that the degradation profile of the semi-IPN is located between those of the neat components, with an improved thermal stability at high temperatures (>450 °C) after the addition of G nanosheets. The mechanical (complex modulus) and electrical properties (surface conductivity) significantly increase in the nanohybrid hydrogels with 0.2% of G nanosheets. Nevertheless, when the amount of G nanoparticles increases fourfold (0.8%), the mechanical properties diminish and the electrical conductivity does not increase proportionally, suggesting the presence of G aggregates. The biological assessment (C2C12 murine myoblasts) indicates a good biocompatibility and proliferative behavior. These results reveal a new conductive and biocompatible semi-IPN with remarkable values of electrical conductivity and ability to induce myoblast proliferation, indicating its great potential for musculoskeletal tissue engineering.
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Affiliation(s)
- José Luis Aparicio-Collado
- Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, 46022 València, Spain; (J.L.A.-C.); (J.M.-M.); (C.T.C.); (A.V.)
| | - Qiqi Zheng
- Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, 46022 València, Spain; (J.L.A.-C.); (J.M.-M.); (C.T.C.); (A.V.)
| | - José Molina-Mateo
- Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, 46022 València, Spain; (J.L.A.-C.); (J.M.-M.); (C.T.C.); (A.V.)
| | - Constantino Torregrosa Cabanilles
- Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, 46022 València, Spain; (J.L.A.-C.); (J.M.-M.); (C.T.C.); (A.V.)
| | - Ana Vidaurre
- Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, 46022 València, Spain; (J.L.A.-C.); (J.M.-M.); (C.T.C.); (A.V.)
- Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 46022 València, Spain
| | - Ángel Serrano-Aroca
- Biomaterials and Bioengineering Lab, Centro de Investigación Traslacional San Alberto Magno, Universidad Católica de Valencia San Vicente Mártir, 46001 València, Spain
| | - Roser Sabater i Serra
- Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, 46022 València, Spain; (J.L.A.-C.); (J.M.-M.); (C.T.C.); (A.V.)
- Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 46022 València, Spain
- Department of Electrical Engineering, Universitat Politècnica de València, 46022 València, Spain
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13
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Overview of Antimicrobial Biodegradable Polyester-Based Formulations. Int J Mol Sci 2023; 24:ijms24032945. [PMID: 36769266 PMCID: PMC9917530 DOI: 10.3390/ijms24032945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/18/2023] [Accepted: 01/21/2023] [Indexed: 02/05/2023] Open
Abstract
As the clinical complications induced by microbial infections are known to have life-threatening side effects, conventional anti-infective therapy is necessary, but not sufficient to overcome these issues. Some of their limitations are connected to drug-related inefficiency or resistance and pathogen-related adaptive modifications. Therefore, there is an urgent need for advanced antimicrobials and antimicrobial devices. A challenging, yet successful route has been the development of new biostatic or biocide agents and biomaterials by considering the indisputable advantages of biopolymers. Polymers are attractive materials due to their physical and chemical properties, such as compositional and structural versatility, tunable reactivity, solubility and degradability, and mechanical and chemical tunability, together with their intrinsic biocompatibility and bioactivity, thus enabling the fabrication of effective pharmacologically active antimicrobial formulations. Besides representing protective or potentiating carriers for conventional drugs, biopolymers possess an impressive ability for conjugation or functionalization. These aspects are key for avoiding malicious side effects or providing targeted and triggered drug delivery (specific and selective cellular targeting), and generally to define their pharmacological efficacy. Moreover, biopolymers can be processed in different forms (particles, fibers, films, membranes, or scaffolds), which prove excellent candidates for modern anti-infective applications. This review contains an overview of antimicrobial polyester-based formulations, centered around the effect of the dimensionality over the properties of the material and the effect of the production route or post-processing actions.
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14
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Cai F, Lin M, Jin W, Chen C, Liu G. Biosynthesis of poly(3-hydroxybutyrate-co-3-hydroxvalerate) from volatile fatty acids by Cupriavidus necator. J Basic Microbiol 2023; 63:128-139. [PMID: 36192143 DOI: 10.1002/jobm.202200448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/26/2022] [Accepted: 09/10/2022] [Indexed: 02/03/2023]
Abstract
A promising strategy to alleviate the plastic pollution from traditional petroleum-based plastics is the application of biodegradable plastics, in which polyhydroxyalkanoates (PHAs) have received increasing interest owing to their considerable biodegradability. In the PHAs family, poly(3-hydroxybutyrate-co-3-hydroxvalerate) (PHBV) has better mechanical properties, which possesses broader application prospects. With this purpose, the present study adopted Cupriavidus necator to synthesize PHBV utilizing volatile fatty acids (VFAs) as sole carbon sources. Results showed that the concentration and composition of VFAs significantly influenced the production of PHAs. Especially, even carbon VFAs (acetate and butyrate) synthesized only poly(3-hydroxybutyrate) (PHB), while the addition of odd carbon VFAs (propionate and valerate) resulted in PHBV production. The 3-hydroxyvalerate (3HV) contents in PHBV were directly determined by the specific VFAs compositions, in which valerate was the preferred substrate for 3HV accumulation. After optimization by response surface methodology, the highest PHBV accumulation achieved 79.47% in dry cells, and the conversion efficiency of VFAs to PHBV reached 40%, with the PHBV production of 1.20 ± 0.05 g/L. This study revealed the metabolic rule of VFAs converting into PHAs by C. necator and figured out the optimal VFAs condition for PHBV accumulation, which provides a valuable reference for developing downstream strategies of PHBV production in industrial applications in future.
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Affiliation(s)
- Fanfan Cai
- Biomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Ming Lin
- Biomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Wenxiong Jin
- Biomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Chang Chen
- Biomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Guangqing Liu
- Biomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, China
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15
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Zytner P, Pal AK, Wu F, Rodriguez-Uribe A, Mohanty AK, Misra M. Morphology and Performance Relationship Studies on Poly(3-hydroxybutyrate- co-3-hydroxyvalerate)/Poly(butylene adipate- co-terephthalate)-Based Biodegradable Blends. ACS OMEGA 2023; 8:1946-1956. [PMID: 36687037 PMCID: PMC9850484 DOI: 10.1021/acsomega.2c04770] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 11/17/2022] [Indexed: 06/17/2023]
Abstract
Biodegradable poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)/poly(butylene adipate-co-terephthalate) (PBAT) blends hold great potential for use in sustainable packaging applications for their advanced performance. Understanding the structure-property relationship in the blends at various proportions is significantly important for their future application, which is addressed in this work. The study found that the inherent brittleness of PHBV can only be modified with the addition of 50 wt % PBAT, where co-continuous structures formed in the blend as revealed by scanning electron microscopy (SEM) analysis. The elongation at break (%) of the blends increased from 3.81 (30% PBAT) to 138.5% (50% PBAT) and 345.3% (70 wt % PBAT), respectively. The fibrous structures of the PBAT formed during breaking are beneficial for energy dissipation, which greatly increased the toughness of the blends. Both the SEM observation and glass-transition temperature study by dynamic mechanical analysis indicated that the PHBV and PBAT are naturally immiscible. However, by simply mixing the two polymers with different composition ratios, the properties including melt flow index, heat deflection temperature, and mechanical properties can be tailored for different processing methods and applications. Our research work herein illustrates the fundamental structure-property relationship in this popular blend of PHBV/PBAT, aiming to guide the future modification direction in improving their properties and realizing their commercial applications in different scenarios.
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Affiliation(s)
- Peter Zytner
- Bioproducts
Discovery and Development Centre, Department of Plant Agriculture, University of Guelph, 50 Stone Road East, Guelph, OntarioN1G 2W1, Canada
- School
of Engineering, Thornbrough Building, University
of Guelph, 50 Stone Road
East, Guelph, OntarioN1G 2W1, Canada
| | - Akhilesh Kumar Pal
- Bioproducts
Discovery and Development Centre, Department of Plant Agriculture, University of Guelph, 50 Stone Road East, Guelph, OntarioN1G 2W1, Canada
- School
of Engineering, Thornbrough Building, University
of Guelph, 50 Stone Road
East, Guelph, OntarioN1G 2W1, Canada
| | - Feng Wu
- The
Higher Educational Key Laboratory for Phosphorus Chemical Engineering
of Yunnan Province, Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan650500, China
| | - Arturo Rodriguez-Uribe
- Bioproducts
Discovery and Development Centre, Department of Plant Agriculture, University of Guelph, 50 Stone Road East, Guelph, OntarioN1G 2W1, Canada
- School
of Engineering, Thornbrough Building, University
of Guelph, 50 Stone Road
East, Guelph, OntarioN1G 2W1, Canada
| | - Amar K. Mohanty
- Bioproducts
Discovery and Development Centre, Department of Plant Agriculture, University of Guelph, 50 Stone Road East, Guelph, OntarioN1G 2W1, Canada
- School
of Engineering, Thornbrough Building, University
of Guelph, 50 Stone Road
East, Guelph, OntarioN1G 2W1, Canada
| | - Manjusri Misra
- Bioproducts
Discovery and Development Centre, Department of Plant Agriculture, University of Guelph, 50 Stone Road East, Guelph, OntarioN1G 2W1, Canada
- School
of Engineering, Thornbrough Building, University
of Guelph, 50 Stone Road
East, Guelph, OntarioN1G 2W1, Canada
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16
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Khamplod T, Winterburn JB, Cartmell SH. Electrospun poly(3-hydroxybutyrate-co-3-hydroxyvalerate) scaffolds - a step towards ligament repair applications. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2022; 23:895-910. [PMID: 36570876 PMCID: PMC9769142 DOI: 10.1080/14686996.2022.2149034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 11/11/2022] [Accepted: 11/13/2022] [Indexed: 06/17/2023]
Abstract
The incidence of anterior cruciate ligament (ACL) ruptures is approximately 50 per 100,000 people. ACL rupture repair methods that offer better biomechanics have the potential to reduce long term osteoarthritis. To improve ACL regeneration biomechanically similar, biocompatible and biodegradable tissue scaffolds are required. Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), with high 3-hydroxyvalerate (3HV) content, based scaffold materials have been developed, with the advantages of traditional tissue engineering scaffolds combined with attractive mechanical properties, e.g., elasticity and biodegradability. PHBV with 3HV fractions of 0 to 100 mol% were produced in a controlled manner allowing specific compositions to be targeted, giving control over material properties. In conjunction electrospinning conditions were altered, to manipulate the degree of fibre alignment, with increasing collector rotating speed used to obtain random and aligned PHBV fibres. The PHBV based materials produced were characterised, with mechanical properties, thermal properties and surface morphology being studied. An electrospun PHBV fibre mat with 50 mol% 3HV content shows a significant increase in elasticity compared to those with lower 3HV content and could be fabricated into aligned fibres. Biocompatibility testing with L929 fibroblasts demonstrates good cell viability, with the aligned fibre network promoting fibroblast alignment in the axial fibre direction, desirable for ACL repair applications. Dynamic load testing shows that the 50 mol% 3HV PHBV material produced can withstand cyclic loading with reasonable resilience. Electrospun PHBV can be produced with low batch variability and tailored, application specific properties, giving these biomaterials promise in tissue scaffold applications where aligned fibre networks are desired, such as ACL regeneration. .
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Affiliation(s)
- Thammarit Khamplod
- Department of Chemical Engineering, School of Engineering, Faculty of Science and Engineering, The University of Manchester, Manchester, UK
- Henry Royce Institute, The University of Manchester, Manchester, UK
| | - James B. Winterburn
- Department of Chemical Engineering, School of Engineering, Faculty of Science and Engineering, The University of Manchester, Manchester, UK
| | - Sarah H. Cartmell
- Henry Royce Institute, The University of Manchester, Manchester, UK
- Department of Materials Science, School of Natural Sciences, Faculty of Science and Engineering, The University of Manchester, Manchester, UK
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17
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Janowski G, Frącz W, Bąk Ł, Trzepieciński T. The Effect of the Extrusion Method on Processing and Selected Properties of Poly(3-hydroxybutyric-co-3-hydroxyvaleric Acid)-Based Biocomposites with Flax and Hemp Fibers. Polymers (Basel) 2022; 14:polym14245370. [PMID: 36559736 PMCID: PMC9785153 DOI: 10.3390/polym14245370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/05/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022] Open
Abstract
The paper presents a comparative analysis of two extrusion methods of biocomposites with a poly(3-hydroxybutyrate-co-3-hydroxyvalerate acid) (PHBV) matrix filled with flax and hemp fibers in terms of biopolymer production, its processing in the further injection process, and an evaluation of the mechanical and functional properties of the products. Biocomposites containing 15% by weight of the filler were produced using single- and twin-screw extruders. The biocomposites were then processed by injection molding and then, among other things, the pressures in the mold cavity during processing were analyzed. The produced samples were tested by means of the following tests: uniaxial tensile strength, hardness, and impact tensile strength. The biocomposite's microstructure was also analyzed using scanning electron microscopy (SEM), as were the shrinkage and water absorption of the manufactured products. In addition, thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) tests were performed. It was found that the extrusion method changed significantly the geometry of the filler fibers and the processing capabilities of the manufactured materials. Significant differences in the mechanical and functional properties of the obtained biocomposite products were also found. On their basis, the advantages and disadvantages of both extrusion methods were discussed. Most of the obtained properties of injection products indicate the choice of single-screw extrusion. The products were characterized by slightly better mechanical properties and lower processing shrinkage. In turn, composites obtained by the screw method were characterized by lower water absorption and lower viscosity of the composite during injection molding.
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Affiliation(s)
- Grzegorz Janowski
- Department of Materials Forming and Processing, Rzeszow University of Technology, 35-959 Rzeszow, Poland
- Correspondence: (G.J.); (T.T.)
| | - Wiesław Frącz
- Department of Materials Forming and Processing, Rzeszow University of Technology, 35-959 Rzeszow, Poland
| | - Łukasz Bąk
- Department of Materials Forming and Processing, Rzeszow University of Technology, 35-959 Rzeszow, Poland
| | - Tomasz Trzepieciński
- Department of Manufacturing Processes and Production Engineering, Rzeszow University of Technology, 35-959 Rzeszow, Poland
- Correspondence: (G.J.); (T.T.)
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18
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A promising antimicrobial bionanocomposite based poly(3-hydroxybutyrate-co-3-hydroxyvalerate) reinforced silver doped zinc oxide nanoparticles. Sci Rep 2022; 12:14299. [PMID: 35995923 PMCID: PMC9395520 DOI: 10.1038/s41598-022-17470-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Accepted: 07/26/2022] [Indexed: 02/02/2023] Open
Abstract
A bionanocomposite based on biosynthesized poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and reinforced with silver@zinc oxide (Ag-ZnO) was synthesized in variable loadings of Ag-ZnO using the in-situ casting dissolution technique. The degradable biopolymer PHBV had been biosynthesized from date waste as a renewable carbon source. The fabricated products were investigated as promising antibacterial materials. The Ag-ZnO nanoparticles were also synthesized using the green method in the presence of Gum Arabic. The Ag-ZnO nanoparticles were loaded within the PHBV biopolymer backbone at concentration of 1%, 3%, 5% and 10%, PHBV/Ag-ZnO(1,3,5,10%). The chemical structure, morphology, physical and thermal properties of the PHBV/Ag-ZnO bionanocomposites were assessed via common characterization tools of FTIR, TGA, XRD, SEM and EDX. One step of the degradation process was observed in the range of 200-220 °C for all the obtained materials. The onset degradation temperature of the bionanocomposites have been noticeably increased with increasing the nanofiller loading percentage. In addition, fabricated products were investigated for their interesting antibacterial performance. A detailed biological screening for the obtained products was confirmed against some selected Gram-positive and Gram-negative strains S. aureus and E. coli, respectively. Overall, the bionanocomposite PHBV/Ag-ZnO(10%) was the most potent against both types of the selected bacteria. The order of bacterial growth inhibition on the surface of the fabricated bionanocomposites was detected as follows: PHBV/Ag-ZnO(10%) > PHBV/Ag-ZnO(5%) > PHBV/Ag-ZnO(3%) > PHBV/Ag-ZnO(1%).
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19
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Hurtado A, Cano-Vicent A, Tuñón-Molina A, Aparicio-Collado JL, Salesa B, I Serra RS, Serrano-Aroca Á. Engineering alginate hydrogel films with poly(3-hydroxybutyrate-co-3-valerate) and graphene nanoplatelets: Enhancement of antiviral activity, cell adhesion and electroactive properties. Int J Biol Macromol 2022; 219:694-708. [PMID: 35961550 PMCID: PMC9364692 DOI: 10.1016/j.ijbiomac.2022.08.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 07/30/2022] [Accepted: 08/07/2022] [Indexed: 12/27/2022]
Abstract
A new biodegradable semi-interpenetrated polymer network (semi-IPN) of two US Food and Drug Administration approved materials, poly(3-hydroxybutyrate-co-3-valerate) (PHBV) and calcium alginate (CA) was engineered to provide an alternative strategy to enhance the poor adhesion properties of CA. The synthesis procedure allows the additional incorporation of 10 % w/w of graphene nanoplatelets (GNPs), which have no cytotoxic effect on human keratinocytes. This quantity of multilayer graphene provides superior antiviral activity to the novel semi-IPN against a surrogate virus of SARS-CoV-2. Adding GNPs hardly affects the water absorption or electrical conductivity of the pure components of CA and PHBV. However, the semi-IPN's electrical conductivity increases dramatically after adding GNP due to molecular rearrangements of the intertwined polymer chains that continuously distribute the GNP nanosheets, This new hydrophilic composite biomaterial film shows great promise for skin biomedical applications, especially those that require antiviral and/or biodegradable electroconductive materials.
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Affiliation(s)
- Alejandro Hurtado
- Biomaterials and Bioengineering Lab, Centro de Investigación Traslacional San Alberto Magno, Universidad Católica de Valencia San Vicente Mártir, c/Guillem de Castro 94, Valencia 46001, Spain
| | - Alba Cano-Vicent
- Biomaterials and Bioengineering Lab, Centro de Investigación Traslacional San Alberto Magno, Universidad Católica de Valencia San Vicente Mártir, c/Guillem de Castro 94, Valencia 46001, Spain
| | - Alberto Tuñón-Molina
- Biomaterials and Bioengineering Lab, Centro de Investigación Traslacional San Alberto Magno, Universidad Católica de Valencia San Vicente Mártir, c/Guillem de Castro 94, Valencia 46001, Spain
| | - Jose Luis Aparicio-Collado
- Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, 46022 València, Spain
| | - Beatriz Salesa
- Biomaterials and Bioengineering Lab, Centro de Investigación Traslacional San Alberto Magno, Universidad Católica de Valencia San Vicente Mártir, c/Guillem de Castro 94, Valencia 46001, Spain
| | - Roser Sabater I Serra
- Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, 46022 València, Spain; CIBER-BBN, Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine, 46022 València, Spain.
| | - Ángel Serrano-Aroca
- Biomaterials and Bioengineering Lab, Centro de Investigación Traslacional San Alberto Magno, Universidad Católica de Valencia San Vicente Mártir, c/Guillem de Castro 94, Valencia 46001, Spain.
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Electrically Conductive Biocomposites Based on Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and Wood-Derived Carbon Fillers. JOURNAL OF COMPOSITES SCIENCE 2022. [DOI: 10.3390/jcs6080228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
In this paper, biobased carbons were used as fillers in poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV). The mechanical and electrical properties of these 100% biocomposites were analyzed. First, biocarbons were prepared from wood dust and cellulose fibers using carbonization temperatures ranging 900–2300 °C. XRD revealed significant improvements of the graphitic structure with increasing temperatures for both precursors, with slightly higher ordering in wood-dust-based carbons. An increase of the carbon content with continuous removal of other elements was observed with increasing temperature. The carbonized cellulose fiber showed an accumulation of Na and O on the fiber surface at a carbonization temperature of 1500 °C. Significant degradation of PHBV was observed when mixed with this specific filler, which can, most probably, be attributed to this exceptional surface chemistry. With any other fillers, the preparation of injection-molded PHBV composites was possible without any difficulties. Small improvements in the mechanical performance were observed, with carbonized fibers being slightly superior to the wood dust analogues. Improvements at higher filler content were observed. These effects were even more pronounced in the electrical conductivity. In the range of 15–20 vol.% carbonized fibers, the percolation threshold could be reached, resulting in an electrical conductivity of 0.7 S/cm. For comparison, polypropylene composites were prepared using cellulose fibers carbonized at 2000 °C. Due to longer fibers retained in the composites, percolation could be reached in the range of 5–10 vol.%. The electrical conductivity was even higher compared to that of composites using commercial carbon fibers, showing a great potential for carbonized cellulose fibers in electrical applications.
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Mai J, Chan CM, Colwell J, Pratt S, Laycock B. Characterisation of end groups of hydroxy-functionalised scl-PHAs prepared by transesterification using ethylene glycol. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.110123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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22
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Ibrahim MI, Alsafadi D, Safi E, Alenazi E, Aboulsoud M, Hussein MA, Alamry KA. Biosynthesized poly(3-hydroxybutyrate-co-3-hydroxyvalerate) as biocompatible microcapsules with extended release for busulfan and montelukast. Int J Biol Macromol 2022; 213:728-737. [PMID: 35671908 DOI: 10.1016/j.ijbiomac.2022.05.181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 05/09/2022] [Accepted: 05/27/2022] [Indexed: 11/18/2022]
Abstract
An extended release dosage form based on encapsulating the challenging drug busulfan within microspheres of the biodegradable, biocompatible and biosynthesized poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) polyester was achieved. The used (PHBV) polymer was biosynthesized by the halophilic archaeon Haloferax mediterranei from date waste biomass as feed-stock. PHBV microspheres of 1.2-2.1 μm diameter were successfully fabricated and loaded with busulfan with an encapsulation efficiency of 29.2 ± 0.2%. In addition, PHBV microspheres of 1.5-3.5 μm diameter and loaded with montelukast sodium (MK) drug were also fabricated with an encapsulation efficiency of 16.0 ± 0.4%. The double-emulsion solvent evaporation method was used to fabricate the drug-loaded microspheres. The drug-loaded microspheres have been characterized by XRD, FTIR and SEM, and confirmed to be successfully fabricated. The drugs in vitro release profiles have shown extended release for up to 3 days in case of busulfan and 8 h in case of montelukast sodium. The in vitro release profiles for busulfan and montelukast suggest that these drug-loaded microcapsules can be efficiently used as new dosage forms to solve the current issues of busulfan administration protocols, and to introduce a new dosage form for montelukast with extended release performance.
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Affiliation(s)
- Mohammad I Ibrahim
- Department of Chemistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Diya Alsafadi
- Biocatalysis and Biosynthesis Research Unit, Advanced Research Center, Royal Scientific Society, Amman 11941, Jordan
| | - Eyad Safi
- College of Petroleum Engineering & Geosciences (CPG), King Fahd University of Petroleum & Minerals (KFUPM), Dhahran, Saudi Arabia
| | - Eid Alenazi
- King Faisal Specialist Hospital (KFSH), Riyadh, Saudi Arabia
| | | | - Mahmoud A Hussein
- Department of Chemistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Polymer Chemistry Lab., Chemistry Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
| | - Khalid A Alamry
- Department of Chemistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
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23
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Kim M, Kang J, Yun SI. Alginate-reinforced poly(3-hydroxybutyrate)/ poly(hydroxybutyrate-co-hydroxyvalerate) aerogel monoliths fabricated by phase separation as environmental floating adsorbents. Int J Biol Macromol 2022; 217:956-968. [PMID: 35908678 DOI: 10.1016/j.ijbiomac.2022.07.188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/16/2022] [Accepted: 07/23/2022] [Indexed: 11/05/2022]
Abstract
Poly(3-hydroxybutyrate) (PHB)/poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) aerogel monoliths were prepared via nonsolvent induced phase separation and then sequentially immersed in ethanol and sodium alginate (ALG) solutions. The resulting composite aerogels contained up to a 52 wt% fraction ALG, causing a remarkable increase in their compressive modulus and collapse strength from 0.3 MPa and 33 kPa to 4 MPa and 406 kPa, respectively, i.e., by 13/12 times. An increase in the ALG contents in the composite aerogels allowed them to effectively adsorb both water and soybean oil, according to pseudo-second-order adsorption kinetics. The highly porous composite aerogel acted as an efficient floating adsorbent for a cationic dye (i.e., methylene blue (MB)) in water. MB adsorption was found to be strongly dependent on ALG contents in the adsorbent, as well as operating parameters such as the initial concentration, pH, and temperature of MB solutions. MB adsorption is best described by the Langmuir isotherm and follows pseudo-second-order kinetics. Ca2+-crosslinking of ALG further increased compressive strength but significantly decreased MB adsorption capability following pseudo-first-order kinetics, implying a slow internal diffusion step for MB adsorption due to its tightened network structure relative to noncrosslinked adsorbents.
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Affiliation(s)
- Minji Kim
- Department of Chemical Engineering and Materials Science, College of Biochemical Engineering, Sangmyung University, Seoul 03016, Republic of Korea
| | - Jiseon Kang
- Department of Chemical Engineering and Materials Science, College of Biochemical Engineering, Sangmyung University, Seoul 03016, Republic of Korea
| | - Seok Il Yun
- Department of Chemical Engineering and Materials Science, College of Biochemical Engineering, Sangmyung University, Seoul 03016, Republic of Korea.
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24
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Mendes AI, Rebelo R, Aroso I, Correlo VM, Fraga AG, Pedrosa J, Marques AP. Development of an antibiotics delivery system for topical treatment of the neglected tropical disease Buruli ulcer. Int J Pharm 2022; 623:121954. [PMID: 35760261 DOI: 10.1016/j.ijpharm.2022.121954] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 05/31/2022] [Accepted: 06/21/2022] [Indexed: 01/10/2023]
Abstract
Skin infection by Mycobacterium ulcerans causes Buruli ulcer (BU) disease, a serious condition that significantly impact patient' health and quality of life and can be very difficult to treat. Treatment of BU is based on daily systemic administration of antibiotics for at least 8 weeks and presents drawbacks associated with the mode and duration of drug administration and potential side effects. Thus, new therapeutic strategies are needed to improve the efficacy and modality of BU therapeutics, resulting in a more convenient and safer antibiotic regimen. Hence, we developed a dual delivery system based on poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) microparticles and a gellan gum (GG) hydrogel for delivery of rifampicin (RIF) and streptomycin (STR), two antibiotics used for BU treatment. RIF was successfully loaded into PHBV microparticles, with an encapsulation efficiency of 43%, that also revealed a mean size of 10 µm, spherical form and rough topography. These microparticles were further embedded in a GG hydrogel containing STR. The resultant hydrogel showed a porous microstructure that conferred a high water retention capability (superior to 2000%) and a controlled release of both antibiotics. Also, biological studies revealed antibacterial activity against M. ulcerans, and a good cytocompatibility in a fibroblast cell line. Thus, the proposed drug delivery system can constitute a potential topical approach for treatment of skin ulcers caused by BU disease.
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Affiliation(s)
- Ana I Mendes
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rita Rebelo
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal; 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal
| | - Ivo Aroso
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal; 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal
| | - Vitor M Correlo
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal; 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal
| | - Alexandra G Fraga
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Jorge Pedrosa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Alexandra P Marques
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal; 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal.
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Khatami K, Perez-Zabaleta M, Cetecioglu Z. Pure cultures for synthetic culture development: Next level municipal waste treatment for polyhydroxyalkanoates production. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 305:114337. [PMID: 34972045 DOI: 10.1016/j.jenvman.2021.114337] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 12/10/2021] [Accepted: 12/16/2021] [Indexed: 06/14/2023]
Abstract
Polyhydroxyalkanoates (PHAs), as bio-based plastics, promise a transition from petroleum products to green and sustainable alternatives. However, their commercial production is yet impeded by high production costs. In this study, we assessed synthetic culture in mono and co-culture modes for bacterial PHA production. It was demonstrated that volatile fatty acids (VFAs) derived from food waste and primary sludge are cheap carbon sources for maintaining high production yields in the synthetic cultures. The maximum obtained PHA was 77.54 ± 5.67% of cell dried weight (CDW) (1.723 g/L) from Cupriavidus necator and 54.9 ± 3.66% of CDW (1.088 g/L) from Burkholderia cepacia. The acquired results are comparable to those in literature using sugar substrates. Comparatively, lower PHA productions were obtained from the co-cultivations ranging between 36-45 CDW% (0.39-0.48 g/L). Meanwhile, the 3-hydroxyvalerate content in the biopolymers were increased up to 21%.
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Affiliation(s)
- Kasra Khatami
- Department of Chemical Engineering, KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden
| | - Mariel Perez-Zabaleta
- Department of Chemical Engineering, KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden
| | - Zeynep Cetecioglu
- Department of Chemical Engineering, KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden.
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26
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Tomietto P, Russo F, Galiano F, Loulergue P, Salerno S, Paugam L, Audic JL, De Bartolo L, Figoli A. Sustainable fabrication and pervaporation application of bio-based membranes: Combining a polyhydroxyalkanoate (PHA) as biopolymer and Cyrene™ as green solvent. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.120061] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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27
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Velamakanni RP, Sree BS, Vuppugalla P, Velamakanni RS, Merugu R. Biopolymers from Microbial Flora. Biopolymers 2022. [DOI: 10.1007/978-3-030-98392-5_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Kaniuk Ł, Podborska A, Stachewicz U. Enhanced mechanical performance and wettability of PHBV fiber blends with evening primrose oil for skin patches improving hydration and comfort. J Mater Chem B 2022; 10:1763-1774. [DOI: 10.1039/d1tb02805g] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The growing problem of skin diseases due to allergies causing atopic dermatitis, which is characterized by itching, burning, and redness, constantly motivates researchers to look for solutions to soothe these effects by moisturizing skin properly.
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Affiliation(s)
- Łukasz Kaniuk
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow, Poland
| | - Agnieszka Podborska
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Cracow, Poland
| | - Urszula Stachewicz
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow, Poland
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29
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Kumawat TK, Kumawat V, Sharma S, Sharma V, Pandit A, Kandwani N, Biyani M. Sustainable Green Methods for the Extraction of Biopolymers. Biopolymers 2022. [DOI: 10.1007/978-3-030-98392-5_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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30
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El-Newehy MH, Kim HY, Khattab TA, Abdulhameed MM, El-Naggar ME. Fabrication, microstructure characterization, and degradation performance of electrospun mats based on poly(3-hydroxybutyrate-co-3 hydroxyvalerate)/polyethylene glycol blend for potential tissue engineering. LUMINESCENCE 2021; 37:323-331. [PMID: 34871472 DOI: 10.1002/bio.4174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/23/2021] [Accepted: 11/25/2021] [Indexed: 11/11/2022]
Abstract
There have been strong demands for nanofibrous scaffolds fabricated by electrospinning for various fields due to their various advantages. Electrospun poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) fibre mats were prepared. The effects of processing variables as well as the inclusion of poly(ethylene glycol) (PEG) on the morphologies of generated fibres were investigated using Fourier-transform infrared spectroscopy and scanning electron microscopy. The average fibrous diameter was monitored in the range 400-3000 nm relying on the total content of PEG. The fluorescence cell imaging of electrospun mats was also explored. The results of cell viability demonstrated that skin fibroblast BJ-1 cells showed different adhesions and growth rates for the three kinds of PHBV fibres. Electrospun PHBV mats with low amount of PEG offer a high-quality medium for cell growth. Therefore, those mats exhibited high potential for soft tissue engineering, in particular wound healing.
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Affiliation(s)
- Mohamed H El-Newehy
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Hak Yong Kim
- Nano Convergence Engineering, Jeonbuk National University, Jeonju, Republic of Korea
| | - Tawfik A Khattab
- Institute of Textile Research and Technology, National Research Centre, Dokki, Cairo, Egypt
| | - Meera Moydeen Abdulhameed
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mehrez E El-Naggar
- Institute of Textile Research and Technology, National Research Centre, Dokki, Cairo, Egypt
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31
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In situ grafting approach for preparing PLA/PHBV degradable blends with improved mechanical properties. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03958-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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32
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Kaniuk Ł, Stachewicz U. Development and Advantages of Biodegradable PHA Polymers Based on Electrospun PHBV Fibers for Tissue Engineering and Other Biomedical Applications. ACS Biomater Sci Eng 2021; 7:5339-5362. [PMID: 34649426 PMCID: PMC8672356 DOI: 10.1021/acsbiomaterials.1c00757] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
![]()
Biodegradable polymeric
biomaterials offer a significant advantage
in disposable or fast-consuming products in medical applications.
Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)
is an example of a polyhydroxyalkanoate (PHA), i.e., one group of
natural polyesters that are byproducts of reactions taking place in
microorganisms in conditions with an excess carbon source. PHA polymers
are a promising material for the production of everyday materials
and biomedical applications. Due to the high number of monomers in
the group, PHAs permit modifications enabling the production of copolymers
of different compositions and with different proportions of individual
monomers. In order to change and improve the properties of polymer
fibers, PHAs are combined with either other natural and synthetic
polymers or additives of inorganic phases. Importantly, electrospun
PHBV fibers and mats showed an enormous potential in both the medical
field (tissue engineering scaffolds, plasters, wound healing, drug
delivery systems) and industrial applications (filter systems, food
packaging). This Review summarizes the current state of the art in
processing PHBV, especially by electrospinning, its degradation processes,
and biocompatibility studies, starting from a general introduction
to the PHA group of polymers.
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Affiliation(s)
- Łukasz Kaniuk
- AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, al. A. Mickiewicza 30, 30-059 Kraków, Poland
| | - Urszula Stachewicz
- AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, al. A. Mickiewicza 30, 30-059 Kraków, Poland
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Li D, Ma X, Li J, Sun B. Insights into enhanced polyhydroxyalkanoate production by the synergistic use of waste wood hydrolysate and volatile fatty acids by mixed microbial cultures. BIORESOURCE TECHNOLOGY 2021; 337:125488. [PMID: 34320767 DOI: 10.1016/j.biortech.2021.125488] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 05/20/2023]
Abstract
The feasibility of producing polyhydroxyalkanoate (PHA) from pretreated waste wood hydrolysate and volatile fatty acids (VFAs) from sewage fermented products as co-substrate feedstock through mixed microbial cultures (MMCs) process was explored. The results showed that the addition of co-substrate shortened the cycle of PHA reaching the maximum and increased the proportion of 3-hydroxyvalerate (3HV) monomer. Compared with N-excess supply, almost 1.6 times increased PHA accumulation was realized under N-limitation, and simultaneously the highest proportion of 3HV monomer with 51% was also obtained. Additionally, PHA production in S1400 reactor reached a maximum value of about 3088 mg COD/L with culture time to 36 h. The microbial community also displayed a high diversity, which was composed of 65 bacterial genera. It is a novel attempt to accumulate PHA from pretreated waste wood hydrolysate and VFAs co-substrate through MMCs, providing an effective green approach to reduce its expensive cost and achieve mass production.
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Affiliation(s)
- Dongna Li
- College of Light Industry Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, PR China
| | - Xiaojun Ma
- College of Light Industry Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, PR China.
| | - Jianing Li
- Ministry of Agriculture Key Laboratory of Biology and Genetic Resource Utilization of Rubber Tree/State Key Laboratory Breeding Base of Cultivation & Physiology for Tropical Crops, Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou 571737, PR China
| | - Binqing Sun
- College of Light Industry Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, PR China
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Rastegar Ramsheh ZS, Mohtashami Z, Kargar N, Akbari Javar H, Rafiee Tehrani M, Abedin Dorkoosh F. Design and In Vitro Evaluation of a Slow-Release Intraocular Implant of Betamethasone. AAPS PharmSciTech 2021; 22:174. [PMID: 34114068 DOI: 10.1208/s12249-021-02048-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 05/11/2021] [Indexed: 01/03/2023] Open
Abstract
Posterior eye diseases are a common cause of vision problems in developing countries, which have encouraged the development of new treatment models for these degenerative diseases. Intraocular implants are one of the drug delivery systems to the posterior region of the eye. Using these implants, the blood-eye barrier can be bypassed; the complications caused by repeated in vitro administrations can be eliminated, and smaller amounts of the drug would be used during the treatment process. Meanwhile, biodegradable implants have received more attention due to their biodegradable structure and the lack of need for re-surgery to remove the rest of the system from the eye. The aim of this study is to employ biodegradable implants composed of polyethylene glycol (PEG) and 3-hydroxybutyrate-co-3-hydroxyvalerat (PHBV) to deliver betamethasone to the back of the eye in the treatment of retinopathy. PHBV polymer has been selected as the main polymer with a certain ratio of drug to polymer for fabrication of enamel and different amounts of PEG with three molecular weights used as pore generators to control drug release over a period of time. Based on the analysis of the results of differential scanning calorimetry (DSC) and FTIR spectroscopy, none of the polymers were degraded in the temperature range of the manufacturing process, and among betamethasone derivatives, the best option for implant preparation is the use of its basic form. Drug release studies over a period of three months showed that implants containing PHBV HV2% and PEG 6000 had a more appropriate release profile.
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Kartik A, Akhil D, Lakshmi D, Panchamoorthy Gopinath K, Arun J, Sivaramakrishnan R, Pugazhendhi A. A critical review on production of biopolymers from algae biomass and their applications. BIORESOURCE TECHNOLOGY 2021; 329:124868. [PMID: 33707076 DOI: 10.1016/j.biortech.2021.124868] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 02/09/2021] [Accepted: 02/11/2021] [Indexed: 06/12/2023]
Abstract
Algae is abundantly present in our ecosystems and can be easily extracted and used for production of biopolymers. Algae does not produce any anthropogenic, harmful effects, has a good growth rate, and cultivable in wastewater. This literature elucidates the potential of algae biomass by comparing various seaweed and microalgae strains. The routes for biopolymer production were portrayed and their novel methods of isolation such as microwave assisted, ultrasound assisted, and subcritical water assisted extraction are discussed in detail. These novel methods are observed to be highly efficient compared to conventional solvent extraction, with the microwave assisted and ultrasound assisted processes yielding 33% and 5% more biopolymer respectively than the conventional method. Biopolymers are used in variety of applications such as environmental remediation, adsorbent and antioxidant. Biopolymer is shown to be highly effective in the removal of potentially toxic elements and is seen to extract more than 40 mg PTE/g biopolymer.
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Affiliation(s)
- Ashokkumar Kartik
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam - 603110, Chennai, Tamil Nadu, India
| | - Dilipkumar Akhil
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam - 603110, Chennai, Tamil Nadu, India
| | - Divya Lakshmi
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam - 603110, Chennai, Tamil Nadu, India
| | - Kannappan Panchamoorthy Gopinath
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam - 603110, Chennai, Tamil Nadu, India
| | - Jayaseelan Arun
- Centre for Waste Management, International Research Centre, Sathyabama Institute of Science and Technology, Jeppiaar Nagar (OMR), Chennai 600119, Tamil Nadu, India
| | - Ramachandran Sivaramakrishnan
- Laboratory of Cyanobacterial Biotechnology, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
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Chotchindakun K, Pekkoh J, Ruangsuriya J, Zheng K, Unalan I, Boccaccini AR. Fabrication and Characterization of Cinnamaldehyde-Loaded Mesoporous Bioactive Glass Nanoparticles/PHBV-Based Microspheres for Preventing Bacterial Infection and Promoting Bone Tissue Regeneration. Polymers (Basel) 2021; 13:1794. [PMID: 34072334 PMCID: PMC8198921 DOI: 10.3390/polym13111794] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/24/2021] [Accepted: 05/27/2021] [Indexed: 12/28/2022] Open
Abstract
Polyhydroxybutyrate-co-hydroxyvalerate (PHBV) is considered a suitable polymer for drug delivery systems and bone tissue engineering due to its biocompatibility and biodegradability. However, the lack of bioactivity and antibacterial activity hinders its biomedical applications. In this study, mesoporous bioactive glass nanoparticles (MBGN) were incorporated into PHBV to enhance its bioactivity, while cinnamaldehyde (CIN) was loaded in MBGN to introduce antimicrobial activity. The blank (PHBV/MBGN) and the CIN-loaded microspheres (PHBV/MBGN/CIN5, PHBV/MBGN/CIN10, and PHBV/MBGN/CIN20) were fabricated by emulsion solvent extraction/evaporation method. The average particle size and zeta potential of all samples were investigated, as well as the morphology of all samples evaluated by scanning electron microscopy. PHBV/MBGN/CIN5, PHBV/MBGN/CIN10, and PHBV/MBGN/CIN20 significantly exhibited antibacterial activity against Staphylococcus aureus and Escherichia coli in the first 3 h, while CIN releasing behavior was observed up to 7 d. Human osteosarcoma cell (MG-63) proliferation and attachment were noticed after 24 h cell culture, demonstrating no adverse effects due to the presence of microspheres. Additionally, the rapid formation of hydroxyapatite on the composite microspheres after immersion in simulated body fluid (SBF) during 7 d revealed the bioactivity of the composite microspheres. Our findings indicate that this system represents an alternative model for an antibacterial biomaterial for potential applications in bone tissue engineering.
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Affiliation(s)
- Kittipat Chotchindakun
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Jeeraporn Pekkoh
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;
- Research Center of Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Jetsada Ruangsuriya
- Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand;
- Functional Food Research Unit, Science and Technology Research Institute, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Kai Zheng
- Institute of Biomaterials, University of Erlangen-Nuremberg, 91058 Erlangen, Germany; (K.Z.); (I.U.)
| | - Irem Unalan
- Institute of Biomaterials, University of Erlangen-Nuremberg, 91058 Erlangen, Germany; (K.Z.); (I.U.)
| | - Aldo R. Boccaccini
- Institute of Biomaterials, University of Erlangen-Nuremberg, 91058 Erlangen, Germany; (K.Z.); (I.U.)
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Gherasim O, Grumezescu AM, Ficai A, Grumezescu V, Holban AM, Gălățeanu B, Hudiță A. Composite P(3HB-3HV)-CS Spheres for Enhanced Antibiotic Efficiency. Polymers (Basel) 2021; 13:989. [PMID: 33807077 PMCID: PMC8004896 DOI: 10.3390/polym13060989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 03/18/2021] [Accepted: 03/22/2021] [Indexed: 01/17/2023] Open
Abstract
Natural-derived biopolymers are suitable candidates for developing specific and selective performance-enhanced antimicrobial formulations. Composite polymeric particles based on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and chitosan, P(3HB-3HV)-CS, are herein proposed as biocompatible and biodegradable delivery systems for bioproduced antibiotics: bacitracin (Bac), neomycin (Neo) and kanamycin (Kan). The stimuli-responsive spheres proved efficient platforms for boosting the antibiotic efficiency and antibacterial susceptibility, as evidenced against Gram-positive and Gram-negative strains. Absent or reduced proinflammatory effects were evidenced on macrophages in the case of Bac-/Neo- and Kan-loaded spheres, respectively. Moreover, these systems showed superior ability to sustain and promote the proliferation of dermal fibroblasts, as well as to preserve their ultrastructure (membrane and cytoskeleton integrity) and to exhibit anti-oxidant activity. The antibiotic-loaded P(3HB-3HV)-CS spheres proved efficient alternatives for antibacterial strategies.
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Affiliation(s)
- Oana Gherasim
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, 011061 Bucharest, Romania; (O.G.); (A.M.G.); (A.F.)
- Lasers Department, National Institute for Lasers, Plasma, and Radiation Physics, RO-77125 Magurele, Romania
| | - Alexandru Mihai Grumezescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, 011061 Bucharest, Romania; (O.G.); (A.M.G.); (A.F.)
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 050657 Bucharest, Romania
| | - Anton Ficai
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, 011061 Bucharest, Romania; (O.G.); (A.M.G.); (A.F.)
| | - Valentina Grumezescu
- Lasers Department, National Institute for Lasers, Plasma, and Radiation Physics, RO-77125 Magurele, Romania
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 050657 Bucharest, Romania
| | - Alina Maria Holban
- Microbiology & Immunology Department, Faculty of Biology, University of Bucharest, 77206 Bucharest, Romania;
| | - Bianca Gălățeanu
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 91–95 Splaiul Independentei, 050095 Bucharest, Romania; (B.G.); (A.H.)
| | - Ariana Hudiță
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 91–95 Splaiul Independentei, 050095 Bucharest, Romania; (B.G.); (A.H.)
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Kang J, Choi J, Yun SI. Nonsolvent-induced phase separation of poly(3-hydroxybutyrate) and poly(hydroxybutyrate-co-hydroxyvalerate) blend as a facile platform to fabricate versatile nanofiber gels: Aero-, hydro-, and oleogels. Int J Biol Macromol 2021; 173:44-55. [PMID: 33482207 DOI: 10.1016/j.ijbiomac.2021.01.106] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 01/12/2021] [Accepted: 01/16/2021] [Indexed: 10/22/2022]
Abstract
We demonstrated a strategy to prepare different types of 3-D nanofibrous polymeric gels, including hydro-, aero-, and oleogels by nonsolvent-induced phase separation (NIPS). NIPS-derived gel monoliths of poly(3-hydroxybutyrate) (PHB) and poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) blends were converted into hydrogels and aerogels by solvent exchange and freeze-drying, respectively. The high hydrophobicity and porosity of the nanofibrous PHB/PHBV aerogels enabled them to absorb various oils and swell to 20-30 times their own weight. The pseudo-second-order model was successfully used to describe the oil absorption behavior, and the obtained absorption rate constant increased with increasing PHBV content. The oil-swollen aerogels were highly elastic, thereby indicating that NIPS-derived aerogels are an excellent template for the fabrication of oleogels. With an increase in the PHBV ratio, the gels exhibited reduced modulus and collapse strength but increased collapse strain, thereby revealing higher ductility by compression. The rapid separation and re-binding of the liquid phase entrapped in the nanofiber network resulted in the unique thixotropic properties of the hydro- and oleogels. Indomethacin, a hydrophobic model drug, was successfully incorporated into injectable self-healing oleogels containing soybean oil and aerogels. These gels exhibited excellent cytocompatibility, and a better sustained drug release was observed for the oleogels compared to the aerogels.
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Affiliation(s)
- Jiseon Kang
- Department of Chemical Engineering and Materials Science, Sangmyung University, Seoul 03016, Republic of Korea
| | - Jiwon Choi
- Department of Chemical Engineering and Materials Science, Sangmyung University, Seoul 03016, Republic of Korea
| | - Seok Il Yun
- Department of Chemical Engineering and Materials Science, Sangmyung University, Seoul 03016, Republic of Korea.
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Hosseini E, Dervin S, Ganguly P, Dahiya R. Biodegradable Materials for Sustainable Health Monitoring Devices. ACS APPLIED BIO MATERIALS 2021; 4:163-194. [PMID: 33842859 PMCID: PMC8022537 DOI: 10.1021/acsabm.0c01139] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 12/20/2020] [Indexed: 12/12/2022]
Abstract
The recent advent of biodegradable materials has offered huge opportunity to transform healthcare technologies by enabling sensors that degrade naturally after use. The implantable electronic systems made from such materials eliminate the need for extraction or reoperation, minimize chronic inflammatory responses, and hence offer attractive propositions for future biomedical technology. The eco-friendly sensor systems developed from degradable materials could also help mitigate some of the major environmental issues by reducing the volume of electronic or medical waste produced and, in turn, the carbon footprint. With this background, herein we present a comprehensive overview of the structural and functional biodegradable materials that have been used for various biodegradable or bioresorbable electronic devices. The discussion focuses on the dissolution rates and degradation mechanisms of materials such as natural and synthetic polymers, organic or inorganic semiconductors, and hydrolyzable metals. The recent trend and examples of biodegradable or bioresorbable materials-based sensors for body monitoring, diagnostic, and medical therapeutic applications are also presented. Lastly, key technological challenges are discussed for clinical application of biodegradable sensors, particularly for implantable devices with wireless data and power transfer. Promising perspectives for the advancement of future generation of biodegradable sensor systems are also presented.
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Affiliation(s)
- Ensieh
S. Hosseini
- Bendable Electronics and
Sensing Technologies (BEST) Group, James Watt School of Engineering, University of Glasgow, G12 8QQ Glasgow, U.K.
| | - Saoirse Dervin
- Bendable Electronics and
Sensing Technologies (BEST) Group, James Watt School of Engineering, University of Glasgow, G12 8QQ Glasgow, U.K.
| | - Priyanka Ganguly
- Bendable Electronics and
Sensing Technologies (BEST) Group, James Watt School of Engineering, University of Glasgow, G12 8QQ Glasgow, U.K.
| | - Ravinder Dahiya
- Bendable Electronics and
Sensing Technologies (BEST) Group, James Watt School of Engineering, University of Glasgow, G12 8QQ Glasgow, U.K.
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Turco R, Santagata G, Corrado I, Pezzella C, Di Serio M. In vivo and Post-synthesis Strategies to Enhance the Properties of PHB-Based Materials: A Review. Front Bioeng Biotechnol 2021; 8:619266. [PMID: 33585417 PMCID: PMC7874203 DOI: 10.3389/fbioe.2020.619266] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 11/30/2020] [Indexed: 12/13/2022] Open
Abstract
The transition toward "green" alternatives to petroleum-based plastics is driven by the need for "drop-in" replacement materials able to combine characteristics of existing plastics with biodegradability and renewability features. Promising alternatives are the polyhydroxyalkanoates (PHAs), microbial biodegradable polyesters produced by a wide range of microorganisms as carbon, energy, and redox storage material, displaying properties very close to fossil-fuel-derived polyolefins. Among PHAs, polyhydroxybutyrate (PHB) is by far the most well-studied polymer. PHB is a thermoplastic polyester, with very narrow processability window, due to very low resistance to thermal degradation. Since the melting temperature of PHB is around 170-180°C, the processing temperature should be at least 180-190°C. The thermal degradation of PHB at these temperatures proceeds very quickly, causing a rapid decrease in its molecular weight. Moreover, due to its high crystallinity, PHB is stiff and brittle resulting in very poor mechanical properties with low extension at break, which limits its range of application. A further limit to the effective exploitation of these polymers is related to their production costs, which is mostly affected by the costs of the starting feedstocks. Since the first identification of PHB, researchers have faced these issues, and several strategies to improve the processability and reduce brittleness of this polymer have been developed. These approaches range from the in vivo synthesis of PHA copolymers, to the enhancement of post-synthesis PHB-based material performances, thus the addition of additives and plasticizers, acting on the crystallization process as well as on polymer glass transition temperature. In addition, reactive polymer blending with other bio-based polymers represents a versatile approach to modulate polymer properties while preserving its biodegradability. This review examines the state of the art of PHA processing, shedding light on the green and cost-effective tailored strategies aimed at modulating and optimizing polymer performances. Pioneering examples in this field will be examined, and prospects and challenges for their exploitation will be presented. Furthermore, since the establishment of a PHA-based industry passes through the designing of cost-competitive production processes, this review will inspect reported examples assessing this economic aspect, examining the most recent progresses toward process sustainability.
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Affiliation(s)
- Rosa Turco
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Naples, Italy
| | - Gabriella Santagata
- Institute for Polymers, Composites and Biomaterials, National Council of Research, Pozzuoli, Italy
| | - Iolanda Corrado
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Naples, Italy
| | - Cinzia Pezzella
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
| | - Martino Di Serio
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Naples, Italy
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Isipato M, Dessì P, Sánchez C, Mills S, Ijaz UZ, Asunis F, Spiga D, De Gioannis G, Mascia M, Collins G, Muntoni A, Lens PNL. Propionate Production by Bioelectrochemically-Assisted Lactate Fermentation and Simultaneous CO 2 Recycling. Front Microbiol 2021; 11:599438. [PMID: 33384675 PMCID: PMC7769879 DOI: 10.3389/fmicb.2020.599438] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 11/23/2020] [Indexed: 11/17/2022] Open
Abstract
Production of volatile fatty acids (VFAs), fundamental building blocks for the chemical industry, depends on fossil fuels but organic waste is an emerging alternative substrate. Lactate produced from sugar-containing waste streams can be further processed to VFAs. In this study, electrofermentation (EF) in a two-chamber cell is proposed to enhance propionate production via lactate fermentation. At an initial pH of 5, an applied potential of −1 V vs. Ag/AgCl favored propionate production over butyrate from 20 mM lactate (with respect to non-electrochemical control incubations), due to the pH buffering effect of the cathode electrode, with production rates up to 5.9 mM d–1 (0.44 g L–1 d–1). Microbial community analysis confirmed the enrichment of propionate-producing microorganisms, such as Tyzzerella sp. and Propionibacterium sp. Organisms commonly found in microbial electrosynthesis reactors, such as Desulfovibrio sp. and Acetobacterium sp., were also abundant at the cathode, indicating their involvement in recycling CO2 produced by lactate fermentation into acetate, as confirmed by stoichiometric calculations. Propionate was the main product of lactate fermentation at substrate concentrations up to 150 mM, with a highest production rate of 12.9 mM d–1 (0.96 g L–1 d–1) and a yield of 0.48 mol mol–1 lactate consumed. Furthermore, as high as 81% of the lactate consumed (in terms of carbon) was recovered as soluble product, highlighting the potential for EF application with high-carbon waste streams, such as cheese whey or other food wastes. In summary, EF can be applied to control lactate fermentation toward propionate production and to recycle the resulting CO2 into acetate, increasing the VFA yield and avoiding carbon emissions and addition of chemicals for pH control.
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Affiliation(s)
- Marco Isipato
- Department of Civil and Environmental Engineering and Architecture, University of Cagliari, Cagliari, Italy.,Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland Galway, Galway, Ireland
| | - Paolo Dessì
- Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland Galway, Galway, Ireland
| | - Carlos Sánchez
- Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland Galway, Galway, Ireland
| | - Simon Mills
- Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland Galway, Galway, Ireland
| | - Umer Z Ijaz
- Infrastructure and Environment Research Division, School of Engineering, University of Glasgow, Glasgow, United Kingdom
| | - Fabiano Asunis
- Department of Civil and Environmental Engineering and Architecture, University of Cagliari, Cagliari, Italy
| | - Daniela Spiga
- Department of Civil and Environmental Engineering and Architecture, University of Cagliari, Cagliari, Italy
| | - Giorgia De Gioannis
- Department of Civil and Environmental Engineering and Architecture, University of Cagliari, Cagliari, Italy.,IGAG-CNR, Environmental Geology and Geoengineering Institute of the National Research Council-Piazza D'Armi 1, Cagliari, Italy
| | - Michele Mascia
- Dipartimento di Ingegneria Meccanica, Chimica, e dei Materiali, Università degli Studi di Cagliari, Cagliari, Italy
| | - Gavin Collins
- Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland Galway, Galway, Ireland
| | - Aldo Muntoni
- Department of Civil and Environmental Engineering and Architecture, University of Cagliari, Cagliari, Italy.,IGAG-CNR, Environmental Geology and Geoengineering Institute of the National Research Council-Piazza D'Armi 1, Cagliari, Italy
| | - Piet N L Lens
- Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland Galway, Galway, Ireland
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Corrado I, Abdalrazeq M, Pezzella C, Di Girolamo R, Porta R, Sannia G, Giosafatto CVL. Design and characterization of poly (3-hydroxybutyrate-co-hydroxyhexanoate) nanoparticles and their grafting in whey protein-based nanocomposites. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106167] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Reig-Vano B, Tylkowski B, Montané X, Giamberini M. Alginate-based hydrogels for cancer therapy and research. Int J Biol Macromol 2020; 170:424-436. [PMID: 33383080 DOI: 10.1016/j.ijbiomac.2020.12.161] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 12/20/2020] [Accepted: 12/21/2020] [Indexed: 12/16/2022]
Abstract
Cancer is a major health issue concerning to all of us. Current treatment options are still limited due to not-selective action. Encapsulation is contemplated as an innovative approach to address systemic toxicity and tumor resistance caused by traditional therapies, while increasing encapsulated compounds bioavailability. The coating material of capsules strongly determines the success of the system. Since alginate has been proved non-toxic, biocompatible and biodegradable, it is considered a potential vehicle for therapeutic factors encapsulation. Besides, it has the particular ability to form hydrogels, which hold a high-water content and greatly resemble to natural soft tissues. The present review exposes the state-of-the-art and the most sophisticated alginate-based systems for cancer therapy and research. It begins with an overview of alginate hydrogels and the qualities that make them especially suitable for biomedical applications. In the following section, the application of alginate hydrogels as pioneering strategies for cancer treatment is described. Several examples of alginate-based delivery systems of therapeutic drugs, proteins and nucleic acids are provided. Significant emphasis is placed in both oral delivery systems and colorectal cancer therapy. Moreover, the role of alginate 3-D scaffolds for both cell culture and delivery is explained. Lastly, other applications of alginate-based hydrogels such as tumor biomarkers immunosensing and fluorescent surgical marker are included.
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Affiliation(s)
- Belen Reig-Vano
- Department of Chemical Engineering, Universitat Rovira i Virgili, Av. Països Catalans 26, Campus Sescelades, 43007 Tarragona, Spain.
| | - Bartosz Tylkowski
- Eurecat, Centre Tecnològic de Catalunya, Chemical Technologies Unit, Marcel·lí Domingo s/n, 43007 Tarragona, Spain.
| | - Xavier Montané
- Department of Analytic Chemistry and Organic Chemistry, Universitat Rovira i Virgili, Carrer Marcel.lí Domingo s/n, Campus Sescelades, Tarragona 43007, Spain
| | - Marta Giamberini
- Department of Chemical Engineering, Universitat Rovira i Virgili, Av. Països Catalans 26, Campus Sescelades, 43007 Tarragona, Spain.
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Yi C, Qin W, Wen X. Renovated filter filled with poly-3-hydroxybutyrateco-hydroxyvalerate and granular activated carbon for simultaneous removal of nitrate and PPCPs from the secondary effluent. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 749:141494. [PMID: 32827827 DOI: 10.1016/j.scitotenv.2020.141494] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 07/27/2020] [Accepted: 08/03/2020] [Indexed: 06/11/2023]
Abstract
Reclaimed water is in huge demand in water-deficient cities. However, nitrogen, pharmaceuticals and personal care products (PPCPs) are frequent contaminants in reclaimed water that are probable to bring environmental risks. To develop a technology for safe reclaimed water production, in this study, a renovated filter that integrates solid-phase denitrification (SPD) with biodegradable polymer poly-3-hydroxybutyrate-co-hydroxyvalerate (PHBV) and granular activated carbon (GAC) adsorption (SPD-GAC filter) was proposed and applied to remove nitrogen and target PPCPs (metoprolol and diclofenac) simultaneously. The influences of different ratio of the filled PHBV and GAC, and the hydraulic retention time (HRT) on the removal performances were investigated. The results showed that the filter with PHBV/GAC = 1 (25 cm PHBV/25 cm GAC) simultaneously achieved an average NO3--N removal efficiency of about 95% with no accumulation of ammonia and nitrite, and an average removal efficiency of PPCPs of about 80%. Compared with PHBV-based SPD system, the integrated SPD-GAC filter significantly improved the control of carbon release and the PPCP removals. SPD-GAC filter also exhibited a strong tolerance for the variation of influent NO3--N loading rate, achieving a highest denitrification rate of 0.76-0.82 g N·(L·d)-1. The integrated SPD-GAC filter proves to be a promising technology for the simultaneous removal of nitrogen and PPCPs from the secondary effluent.
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Affiliation(s)
- Chenghao Yi
- Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Wei Qin
- Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Xianghua Wen
- Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, PR China.
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Ferreira Soares DC, Domingues SC, Viana DB, Tebaldi ML. Polymer-hybrid nanoparticles: Current advances in biomedical applications. Biomed Pharmacother 2020; 131:110695. [PMID: 32920512 DOI: 10.1016/j.biopha.2020.110695] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 08/05/2020] [Accepted: 08/26/2020] [Indexed: 12/29/2022] Open
Abstract
The unique properties of polymer-hybrid nanosystems enable them to play an important role in different fields such as biomedical applications. Hybrid materials, which are formed by polymer and inorganic- or organic-base systems, have been the focus of many recently published studies whose results have shown outstanding improvements in drug targeting. The development of hybrid polymer materials can avoid the synthesis of new molecules, which is an overall expensive process that can take several years to get to the proper elaboration and approval. Thus, the combination of properties in a single hybrid system can have several advantages over non-hybrid platforms, such as improvements in circulation time, structural disintegration, high stability, premature release, low encapsulation rate and unspecific release kinetics. Thus, the aim of the present review is to outline a rapid and well-oriented scenario concerning the knowledge about polymer-hybrid nanoparticles use in biomedical platforms. Furthermore, the ultimate methodologies adopted in synthesis processes, as well as in applications in vitro/in vivo, are the focus of this review.
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Affiliation(s)
- Daniel Crístian Ferreira Soares
- Universidade Federal de Itajubá, campus Itabira, Laboratório de Bioengenharia, Rua Irmã Ivone Drumond, 200, Itabira, Minas Gerais, Brazil.
| | - Stephanie Calazans Domingues
- Universidade Federal de Itajubá, campus Itabira, Laboratório de Bioengenharia, Rua Irmã Ivone Drumond, 200, Itabira, Minas Gerais, Brazil
| | - Daniel Bragança Viana
- Universidade Federal de Itajubá, campus Itabira, Laboratório de Bioengenharia, Rua Irmã Ivone Drumond, 200, Itabira, Minas Gerais, Brazil
| | - Marli Luiza Tebaldi
- Universidade Federal de Itajubá, campus Itabira, Laboratório de Bioengenharia, Rua Irmã Ivone Drumond, 200, Itabira, Minas Gerais, Brazil
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Polyák P, Bartha K, Pukánszky B. Quantitative determination of release kinetics from fibrous poly(3-hydroxybutyrate) scaffolds. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 114:111026. [DOI: 10.1016/j.msec.2020.111026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 04/18/2020] [Accepted: 04/27/2020] [Indexed: 02/06/2023]
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Accelerated Weathering Effects on Poly(3-hydroxybutyrate- co-3-hydroxyvalerate) (PHBV) and PHBV/TiO 2 Nanocomposites. Polymers (Basel) 2020; 12:polym12081743. [PMID: 32764247 PMCID: PMC7464598 DOI: 10.3390/polym12081743] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 07/22/2020] [Accepted: 07/30/2020] [Indexed: 11/25/2022] Open
Abstract
The effect of accelerated weathering on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and PHBV-based nanocomposites with rutile titanium (IV) dioxide (PHBV/TiO2) was investigated. The accelerated weathering test applied consecutive steps of UV irradiation (at 340 nm and 0.76 W m−2 irradiance) and moisture at 50 °C following the ASTM D4329 standard for up to 2000 h of exposure time. The morphology, chemical structure, crystallization, as well as the mechanical and thermal properties were studied. Samples were characterized after 500, 1000, and 2000 h of exposure time. Different degradation mechanisms were proposed to occur during the weathering exposure and were confirmed based on the experimental data. The PHBV surface revealed cracks and increasing roughness with the increasing exposure time, whereas the PHBV/TiO2 nanocomposites showed surface changes only after 2000 h of accelerated weathering. The degradation of neat PHBV under moisture and UV exposure occurred preferentially in the amorphous phase. In contrast, the presence of TiO2 in the nanocomposites retarded this process, but the degradation would occur simultaneously in both the amorphous and crystalline segments of the polymer after long exposure times. The thermal stability, as well as the temperature and rate of crystallization, decreased in the absence of TiO2. TiO2 not only provided UV protection, but also restricted the physical mobility of the polymer chains, acting as a nucleating agent during the crystallization process. It also slowed down the decrease in mechanical properties. The mechanical properties were shown to gradually decrease for the PHBV/TiO2 nanocomposites, whereas a sharp drop was observed for the neat PHBV after an accelerated weathering exposure. Atomic force microscopy (AFM), using the amplitude modulation–frequency modulation (AM–FM) tool, also confirmed the mechanical changes in the surface area of the PHBV and PHBV/TiO2 samples after accelerated weathering exposure. The changes in the physical and chemical properties of PHBV/TiO2 confirm the barrier activity of TiO2 for weathering attack and its retardation of the degradation process.
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Bordón DL, Vázquez AM, Decarlini MF, Demmel GI, Rossi LI, Aimar ML. Optimisation of the bioreduction process of carbonyl compounds promoted by seeds of glossy privet (Ligustrum lucidum - Oleaceae) and its application to the synthesis of key intermediates. BIOCATAL BIOTRANSFOR 2020. [DOI: 10.1080/10242422.2020.1786070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Daniela L. Bordón
- Cátedra de Química Aplicada, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Ana M. Vázquez
- Cátedra de Tecnología Química, Facultad de Ciencias Químicas, Universidad Católica de Córdoba, Córdoba, Argentina
| | - María F. Decarlini
- Cátedra de Tecnología Química, Facultad de Ciencias Químicas, Universidad Católica de Córdoba, Córdoba, Argentina
| | - Gabriela I. Demmel
- Cátedra de Tecnología Química, Facultad de Ciencias Químicas, Universidad Católica de Córdoba, Córdoba, Argentina
| | - Laura I. Rossi
- SuNaLab, Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- CONICET-INFIQC, Córdoba, Argentina
| | - Mario L. Aimar
- Cátedra de Química Aplicada, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Córdoba, Argentina
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Amaro L, Correia DM, Martins PM, Botelho G, Carabineiro SAC, Ribeiro C, Lanceros-Mendez S. Morphology Dependence Degradation of Electro- and Magnetoactive Poly(3-hydroxybutyrate-co-hydroxyvalerate) for Tissue Engineering Applications. Polymers (Basel) 2020; 12:E953. [PMID: 32325963 PMCID: PMC7240521 DOI: 10.3390/polym12040953] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 04/09/2020] [Accepted: 04/16/2020] [Indexed: 12/31/2022] Open
Abstract
Poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) is a piezoelectric biodegradable and biocompatible polymer suitable for tissue engineering applications. The incorporation of magnetostrictive cobalt ferrites (CFO) into PHBV matrix enables the production of magnetically responsive composites, which proved to be effective in the differentiation of a variety of cells and tissues. In this work, PHBV and PHBV with CFO nanoparticles were produced in the form of films, fibers and porous scaffolds and subjected to an experimental program allowing to evaluate the degradation process under biological conditions for a period up to 8 weeks. The morphology, physical, chemical and thermal properties were evaluated, together with the weight loss of the samples during the in vitro degradation assays. No major changes in the mentioned properties were found, thus proving its applicability for tissue engineering applications. Degradation was apparent from week 4 and onwards, leading to the conclusion that the degradation ratio of the material is suitable for a large range of tissue engineering applications. Further, it was found that the degradation of the samples maintain the biocompatibility of the materials for the pristine polymer, but can lead to cytotoxic effects when the magnetic CFO nanoparticles are exposed, being therefore needed, for magnetoactive applications, to substitute them by biocompatible ferrites, such as an iron oxide (Fe3O4).
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Affiliation(s)
- Luis Amaro
- Center of Physics, Universidade do Minho, 4710-057 Braga, Portugal; (L.A.); (D.M.C.); (P.M.M.)
| | - Daniela M. Correia
- Center of Physics, Universidade do Minho, 4710-057 Braga, Portugal; (L.A.); (D.M.C.); (P.M.M.)
- Center of Chemistry, Universidade de Trás-os-Montes e Alto Douro, 5001-801 Vila Real, Portugal
| | - Pedro M. Martins
- Center of Physics, Universidade do Minho, 4710-057 Braga, Portugal; (L.A.); (D.M.C.); (P.M.M.)
| | - Gabriela Botelho
- Department of Chemistry, Universidade do Minho, 4710-057 Braga, Portugal;
| | - Sónia A. C. Carabineiro
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal;
| | - Clarisse Ribeiro
- Center of Physics, Universidade do Minho, 4710-057 Braga, Portugal; (L.A.); (D.M.C.); (P.M.M.)
- CEB—Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Senentxu Lanceros-Mendez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain;
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
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Liu LY, Xie GJ, Xing DF, Liu BF, Ding J, Ren NQ. Biological conversion of methane to polyhydroxyalkanoates: Current advances, challenges, and perspectives. ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY 2020; 2:100029. [PMID: 36160923 PMCID: PMC9487992 DOI: 10.1016/j.ese.2020.100029] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/20/2020] [Accepted: 04/22/2020] [Indexed: 05/13/2023]
Abstract
Methane emissions and plastic pollution are critical global challenges. The biological conversion of methane to poly-β-hydroxybutyrate (PHB) not only mitigates methane emissions but also provides biodegradable polymer substitutes for petroleum-based materials used in plastics production. This work provides an early overview of the methane-based PHB advances and discusses challenges and related strategies. Recent advances of PHB, including PHB biosynthetic pathways, methanotrophs, bioreactors, and the performances of PHB materials are introduced. Major challenges of methane-based PHB production are discussed in detail; these include low efficiency of methanotrophs, low gas-liquid mass transfer efficiency, and poor material properties. To overcome these limitations, various approaches are also explored, such as feast-famine regimes, engineered microorganisms, gas-permeable membrane bioreactors, two-phase partitioning bioreactors, poly-β-hydroxybutyrate-co-hydroxyvalerate synthesis, and molecular weight manipulation.
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