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Anastasova I, Ignatova M, Manolova N, Rashkov I, Markova N, Toshkova R, Georgieva A, Kamenova-Nacheva M, Trendafilova A, Ivanova V, Doncheva T. Chitosan/Hyaluronate Complex-Coated Electrospun Poly(3-hydroxybutyrate) Materials Containing Extracts from Melissa officinalis and/or Hypericum perforatum with Various Biological Activities: Antioxidant, Antibacterial and In Vitro Anticancer Effects. Polymers (Basel) 2024; 16:2105. [PMID: 39125132 PMCID: PMC11313976 DOI: 10.3390/polym16152105] [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: 07/07/2024] [Revised: 07/20/2024] [Accepted: 07/21/2024] [Indexed: 08/12/2024] Open
Abstract
The present study aimed to fabricate innovative fibrous materials with various biological activities from poly(3-hydroxybutyrate), sodium hyaluronate (HA), chitosan (Ch), Melissa officinalis (MO), Hypericum perforatum (HP) extract, or a combination of both extracts. Electrospinning or electrospinning followed by dip coating and the subsequent formation of a polyelectrolyte complex were the methods used to prepare these materials. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), and attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR) were applied for investigating the morphology of materials, their thermal characteristics, and their surface chemical composition. The composition and design of the mats had an influence on the in vitro release behavior of the main bioactive compounds present in the MO and HP extracts incorporated in the materials. It was found that as-created materials comprising a combination of both extracts and a Ch/HA complex exerted higher antioxidant activity than that of (non-)coated MO-containing mats and Ch/HA-coated mats containing HP. The novel materials manifested antibacterial efficacy towards the pathogenic bacteria S. aureus and E. coli, as evidenced by the performed microbiological screening. Furthermore, the mats possessed a great growth inhibitory effect on HeLa cancer cells but had a less pronounced effect on the growth of normal mouse BALB/3T3 fibroblasts. The loading of both extracts in the mats and the formation of coating led to the enhancement of the in vitro anticancer and antibacterial activities of the materials. Thus, the novel materials have potential for use in local cancer therapy as well as for use as wound dressings.
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Affiliation(s)
- Ina Anastasova
- Laboratory of Bioactive Polymers, Institute of Polymers, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Bl. 103A, BG-1113 Sofia, Bulgaria; (I.A.); (N.M.); (I.R.)
| | - Milena Ignatova
- Laboratory of Bioactive Polymers, Institute of Polymers, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Bl. 103A, BG-1113 Sofia, Bulgaria; (I.A.); (N.M.); (I.R.)
| | - Nevena Manolova
- Laboratory of Bioactive Polymers, Institute of Polymers, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Bl. 103A, BG-1113 Sofia, Bulgaria; (I.A.); (N.M.); (I.R.)
| | - Iliya Rashkov
- Laboratory of Bioactive Polymers, Institute of Polymers, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Bl. 103A, BG-1113 Sofia, Bulgaria; (I.A.); (N.M.); (I.R.)
| | - Nadya Markova
- Institute of Microbiology, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Bl. 26, BG-1113 Sofia, Bulgaria;
| | - Reneta Toshkova
- Institute of Experimental Morphology, Pathology and Anthropology with Museum, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Bl. 25, BG-1113 Sofia, Bulgaria; (R.T.); (A.G.)
| | - Ani Georgieva
- Institute of Experimental Morphology, Pathology and Anthropology with Museum, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Bl. 25, BG-1113 Sofia, Bulgaria; (R.T.); (A.G.)
| | - Mariana Kamenova-Nacheva
- Laboratory for Extraction of Natural Products and Synthesis of Bioactive Compounds, Research and Development and Innovation Consortium, Sofia Tech Park JSC, 111 Tsarigradsko Shose blvd., BG-1784 Sofia, Bulgaria;
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Bl. 9, BG-1113 Sofia, Bulgaria; (A.T.); (V.I.); (T.D.)
| | - Antoaneta Trendafilova
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Bl. 9, BG-1113 Sofia, Bulgaria; (A.T.); (V.I.); (T.D.)
| | - Viktoria Ivanova
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Bl. 9, BG-1113 Sofia, Bulgaria; (A.T.); (V.I.); (T.D.)
| | - Tsvetelina Doncheva
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Bl. 9, BG-1113 Sofia, Bulgaria; (A.T.); (V.I.); (T.D.)
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Sanhueza C, Pavéz M, Hermosilla J, Rocha S, Valdivia-Gandur I, Manzanares MC, Beltrán V, Acevedo F. Poly-3-hydroxybutyrate-silver nanoparticles membranes as advanced antibiofilm strategies for combatting peri-implantitis. Int J Biol Macromol 2024; 269:131974. [PMID: 38692546 DOI: 10.1016/j.ijbiomac.2024.131974] [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: 10/31/2023] [Revised: 04/26/2024] [Accepted: 04/28/2024] [Indexed: 05/03/2024]
Abstract
Dental implant success is threatened by peri-implantitis, an inflammation leading to implant failure. Conventional treatments struggle with the intricate microbial and host factors involved. Antibacterial membranes, acting as barriers and delivering antimicrobials, may offer a promising solution. Thus, this study highlights the potential of developing antibacterial membranes of poly-3-hydroxybutyrate and silver nanoparticles (Ag Nps) to address peri-implantitis challenges, discussing design and efficacy against potential pathogens. Electrospun membranes composed of PHB microfibers and Ag Nps were synthesized in a blend of DMF/chloroform at three different concentrations. Various studies were conducted on the characterization and antimicrobial activity of the membranes. The synthesized Ag Nps ranged from 4 to 8 nm in size. Furthermore, Young's modulus decreased, reducing from 13.308 MPa in PHB membranes without Ag Nps to 0.983 MPa in PHB membranes containing higher concentrations of Ag Nps. This demonstrates that adding Ag Nps results in a less stiff membrane. An increase in elongation at break was noted with the rise in Ag Nps concentration, from 23.597 % in PHB membranes to 60.136 % in PHB membranes loaded with Ag Nps. The antibiotic and antibiofilm activity of the membranes were evaluated against Pseudomonas aeruginosa, Staphylococcus aureus, Streptococcus mutans, and Candida albicans. The results indicated that all PHB membranes containing Ag Nps exhibited potent antibacterial activity by inhibiting the growth of biofilms and planktonic bacteria. However, inhibition of C. albicans occurred only with the PHB-Ag Nps C membrane. These findings emphasize the versatility and potential of Ag Nps-incorporated membranes as a multifunctional approach for preventing and addressing microbial infections associated with peri-implantitis. The combination of antibacterial and antibiofilm properties in these membranes holds promise for improving the management and treatment of peri-implantitis-related complications.
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Affiliation(s)
- Claudia Sanhueza
- Center of Excellence in Translational Medicine - Scientific and Technology Bioresource Nucleus (CEMT- BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile; Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile
| | - Mónica Pavéz
- Center of Excellence in Translational Medicine - Scientific and Technology Bioresource Nucleus (CEMT- BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
| | - Jeyson Hermosilla
- Center of Excellence in Translational Medicine - Scientific and Technology Bioresource Nucleus (CEMT- BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile; Doctoral Program in Sciences of Natural Resources, Universidad de La Frontera, Casilla 54-D, Temuco, Chile; Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile
| | - Sebastián Rocha
- Escuela de Ingeniería, Facultad de Ciencias, Ingeniería y Tecnología, Universidad Mayor, Temuco, Chile
| | - Iván Valdivia-Gandur
- Biomedical Department, Universidad de Antofagasta, Av. Angamos 601, Antofagasta, Chile
| | - María-Cristina Manzanares
- Human Anatomy and Embryology Unit, Experimental Pathology and Therapeutics Department, Faculty of Medicine and Health Sciences, Universitat de Barcelona, Barcelona, Spain
| | - Víctor Beltrán
- Center of Excellence in Translational Medicine - Scientific and Technology Bioresource Nucleus (CEMT- BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile; Clinical Investigation and Dental Innovation Center (CIDIC), Dental School, Universidad de La Frontera, Temuco, Chile; Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile.
| | - Francisca Acevedo
- Center of Excellence in Translational Medicine - Scientific and Technology Bioresource Nucleus (CEMT- BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile; Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile; Department of Basic Sciences, Faculty of Medicine, Universidad de La Frontera, Casilla 54-D, Temuco, Chile.
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Basak S, Subramanian B, Thirumurugan R, Saleena LM. PHB Production by Bacillus megaterium LSRB 0103 Using Cornstarch and Urea. Curr Microbiol 2024; 81:139. [PMID: 38613599 DOI: 10.1007/s00284-024-03667-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 03/16/2024] [Indexed: 04/15/2024]
Abstract
Polyhydroxybutyrates (PHBs) are biopolymers that are good green alternative for synthetic carbon-based polymers, and are also one of the most researched members of the Polyhydroxyalkanoates (PHA) family. In this study, a gram-positive bacterial strain Bacillus megaterium LSRB 0103 was isolated from Pallikaranai Marshland, Chennai, India. Primary screening using Sudan Black dye revealed the presence of intracellular PHB granules. Minimal Davis Media (MDM) which was used or PHB production gave a yield of 0.7107 g/L. Subsequently, using response surface methodology (RSM), a central composite design (CCD) model was designed for media optimization having cornstarch, urea, and pH as independent variables. The findings of the CCD model were fitted into a second-order polynomial equation. The RSM model predicted the maximum PHB yield of 0.93 g/L, at these independent variable levels, cornstarch, 5 g/L; urea, 2.1 g/L; and pH 7.0; while the experimental PHB yield was 0.94 g/L, with a percentage error of 1.1%. This study is the first-time report of production of PHB by Bacillus megaterium using cornstarch and urea as substrate.
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Affiliation(s)
- Souvik Basak
- Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, Kanchipuram, Chennai, Tamil Nadu, 603203, India
| | - Bhargavi Subramanian
- Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, Kanchipuram, Chennai, Tamil Nadu, 603203, India
| | - Rithanya Thirumurugan
- Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, Kanchipuram, Chennai, Tamil Nadu, 603203, India
| | - Lilly M Saleena
- Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, Kanchipuram, Chennai, Tamil Nadu, 603203, India.
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Mondragón-Herrera LI, Vargas-Coronado RF, Carrillo-Escalante H, Cauich-Rodríguez JV, Hernández-Sánchez F, Velasco-Santos C, Avilés F. Mechanical, Thermal, and Physicochemical Properties of Filaments of Poly (Lactic Acid), Polyhydroxyalkanoates and Their Blend for Additive Manufacturing. Polymers (Basel) 2024; 16:1062. [PMID: 38674981 PMCID: PMC11053644 DOI: 10.3390/polym16081062] [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: 03/14/2024] [Revised: 04/05/2024] [Accepted: 04/07/2024] [Indexed: 04/28/2024] Open
Abstract
Polymeric blends are employed in the production of filaments for additive manufacturing to balance mechanical and processability properties. The mechanical and thermal properties of polymeric filaments made of poly (lactic acid) (PLA), polyhydroxyalkanoates (PHA), and its blend (PLA-PHA) are investigated herein and correlated to their measured structural and physicochemical properties. PLA exhibits the highest stiffness and tensile strength, but lower toughness. The mechanical properties of the PLA-PHA blend were similar to those of PLA, but with a significantly higher toughness. Despite the lower mechanical properties of neat PHA, incorporating a small amount (12 wt.%) of PHA into PLA significantly enhances toughness (approximately 50%) compared to pure PLA. The synergistic effect is attributed to the spherulitic morphology of blended PHA in PLA, promoting interactions between the amorphous regions of both polymers. Thermal stability is notably improved in the PLA-PHA blend, as determined by thermogravimetric analysis. The blend also exhibits lower cold crystallization and glass transition temperatures as compared to PLA, which is beneficial for additive manufacturing. Following additive manufacturing, X-ray photoelectron spectroscopic showed that the three filaments present an increase in C-C and C=O bonds associated with the loss of C-O bonds. The thermal process induces a slight increase in crystallinity in PHA due to chain reorganization. The study provides insights into the thermal and structural changes occurring during the melting process of additive manufacturing.
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Affiliation(s)
- L. Itzkuautli Mondragón-Herrera
- Centro de Investigación Científica de Yucatán, A. C., Materials Department, Calle 43 No. 130 x 32 y 34, Col. Chuburná de Hidalgo, Mérida 97205, Yucatán, Mexico; (L.I.M.-H.); (R.F.V.-C.); (F.H.-S.)
| | - R. F. Vargas-Coronado
- Centro de Investigación Científica de Yucatán, A. C., Materials Department, Calle 43 No. 130 x 32 y 34, Col. Chuburná de Hidalgo, Mérida 97205, Yucatán, Mexico; (L.I.M.-H.); (R.F.V.-C.); (F.H.-S.)
| | - H. Carrillo-Escalante
- Centro de Investigación Científica de Yucatán, A. C., Materials Department, Calle 43 No. 130 x 32 y 34, Col. Chuburná de Hidalgo, Mérida 97205, Yucatán, Mexico; (L.I.M.-H.); (R.F.V.-C.); (F.H.-S.)
| | - J. V. Cauich-Rodríguez
- Centro de Investigación Científica de Yucatán, A. C., Materials Department, Calle 43 No. 130 x 32 y 34, Col. Chuburná de Hidalgo, Mérida 97205, Yucatán, Mexico; (L.I.M.-H.); (R.F.V.-C.); (F.H.-S.)
| | - F. Hernández-Sánchez
- Centro de Investigación Científica de Yucatán, A. C., Materials Department, Calle 43 No. 130 x 32 y 34, Col. Chuburná de Hidalgo, Mérida 97205, Yucatán, Mexico; (L.I.M.-H.); (R.F.V.-C.); (F.H.-S.)
| | - C. Velasco-Santos
- División de Estudios de Posgrado e Investigación, Tecnológico Nacional de México Campus Querétaro, Av. Tecnológico s/n, esq. Gral. Mariano Escobedo, Col. Centro Histórico, Santiago de Querétaro 76000, Querétaro, Mexico;
| | - F. Avilés
- Centro de Investigación Científica de Yucatán, A. C., Materials Department, Calle 43 No. 130 x 32 y 34, Col. Chuburná de Hidalgo, Mérida 97205, Yucatán, Mexico; (L.I.M.-H.); (R.F.V.-C.); (F.H.-S.)
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Sriram M, Priya S, Katti DS. Polyhydroxybutyrate-based osteoinductive mineralized electrospun structures that mimic components and tissue interfaces of the osteon for bone tissue engineering. Biofabrication 2024; 16:025036. [PMID: 38471166 DOI: 10.1088/1758-5090/ad331a] [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: 11/16/2023] [Accepted: 03/12/2024] [Indexed: 03/14/2024]
Abstract
Scaffolds for bone tissue engineering should enable regeneration of bone tissues with its native hierarchically organized extracellular matrix (ECM) and multiple tissue interfaces. To achieve this, inspired by the structure and properties of bone osteon, we fabricated polyhydroxybutyrate (PHB)-based mineralized electrospun fibrous scaffolds. After studying multiple PHB-based fibers, we chose 7%PHB/1%Gelatin fibers (PG) to fabricate mineralized fibers that mimic mineralized collagen fibers in bone. The mineralized PG (mPG) surface had a rough, hydrophilic layer of low crystalline calcium phosphate which was biocompatible to bone marrow stromal cells (BMSCs), induced their proliferation and was osteoinductive. Subsequently, by modulating the electrospinning process, we fabricated mPG-based novel higher order fibrous scaffolds that mimic the macroscale geometries of osteons of bone ECM. Inspired by the aligned collagen fibers in bone lamellae, we fabricated mPG scaffolds with aligned fibers that could direct anisotropic elongation of mouse BMSC (mBMSCs). Further, we fabricated electrospun mPG-based osteoinductive tubular constructs which can mimic cylindrical bone components like osteons or lamellae or be used as long bone analogues based on their dimensions. Finally, to regenerate tissue interfaces in bone, we introduced a novel bi-layered scaffold-based approach. An electrospun bi-layered tubular construct that had PG in the outer layer and 7%PHB/0.5%Polypyrrole fibers (PPy) in the inner layer was fabricated. The bi-layered tubular construct underwent preferential surface mineralization only on its outer layer. This outer mineralized layer supported osteogenesis while the inner PPy layer could support neural cell growth. Thus, the bi-layered tubular construct may be used to regenerate haversian canal in the osteons which hosts nerve fibers. Overall, the study introduced novel techniques to fabricate biomimetic structures that can regenerate components of bone osteon and its multiple tissue interfaces. The study lays foundation for the fabrication of a modular scaffold that can regenerate bone with its hierarchical structure and complex tissue interfaces.
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Affiliation(s)
- M Sriram
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
- Mehta Family Centre for Engineering in Medicine, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Smriti Priya
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Dhirendra S Katti
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
- Mehta Family Centre for Engineering in Medicine, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
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Lhamo P, Mahanty B. Impact of Acetic Acid Supplementation in Polyhydroxyalkanoates Production by Cupriavidus necator Using Mixture-Process Design and Artificial Neural Network. Appl Biochem Biotechnol 2024; 196:1155-1174. [PMID: 37166651 DOI: 10.1007/s12010-023-04567-x] [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] [Accepted: 05/03/2023] [Indexed: 05/12/2023]
Abstract
The trend in bioplastic application has increased over the years where polyhydroxyalkanoates (PHAs) have emerged as a potential candidate with the advantage of being bio-origin, biodegradable, and biocompatible. The present study aims to understand the effect of acetic acid concentration (in combination with sucrose) as a mixture variable and its time of addition (process variable) on PHA production by Cupriavidus necator. The addition of acetic acid at a concentration of 1 g l-1 showed a positive influence on biomass and PHA yield; however, the further increase had a reversal effect. The addition of acetic acid at the time of incubation showed a higher PHA yield, whereas maximum biomass was achieved when acetic acid was added after 48 h. Genetic algorithm (GA) optimized artificial neural network (ANN) was used to model PHA concentration from mixture-process design data. Fitness of the GA-ANN model (R2: 0.935) was superior when compared to the polynomial model (R2: 0.301) from mixture design. Optimization of the ANN model projected 2.691 g l-1 PHA from 7.245 g l-1 acetic acid, 12.756 g l-1 sucrose, and the addition of acetic acid at the time of incubation. Sensitivity analysis indicates the inhibitory effect of all the predictors at higher levels. ANN model can be further used to optimize the variables while extending the bioprocess to fed-batch operation.
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Affiliation(s)
- Pema Lhamo
- Karunya Institute of Technology and Sciences, Coimbatore, India
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Rivas-Castillo AM, Valdez-Calderón A, Angeles-Padilla AF, Figueroa-Ocampo CB, Carrillo-Ibarra S, Quezada-Cruz M, Espinosa-Roa A, Pérez-García BD, Rojas-Avelizapa NG. PHB production by Bacillus megaterium strain MNSH1-9K-1 using low-cost media. Braz J Microbiol 2024; 55:245-254. [PMID: 38212508 PMCID: PMC10920526 DOI: 10.1007/s42770-023-01232-7] [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: 01/26/2023] [Accepted: 12/21/2023] [Indexed: 01/13/2024] Open
Abstract
Plastics are widely used for diverse applications due to their versatility. However, their negative impact on ecosystems is undeniable due to their long-term degradation. Thus, there is a rising need for developing eco-friendlier alternatives to substitute fossil-based plastics, like biopolymers. PHA are synthesized intracellularly by microorganisms under stressful conditions of growth and have similar characteristics to conventional polymers, like their melting point, transition temperatures, crystallinity, and flexibility. Although it is feasible to use biopolymers for diverse industrial applications, their elevated production cost due to the supplies needed for microbiological procedures and the low productivity yields obtained have been the main limiting factors for their commercial success. The present study assessed the ability of Bacillus megaterium strain MNSH1-9K-1 to produce biopolymers using low-cost media from different kinds of fruit-peel residues. The results show that MNSH1-9K-1 can produce up to 58 g/L of PHB when grown in a medium prepared from orange-peel residues. The data obtained provide information to enhance the scalability of these kinds of biotechnological processes.
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Affiliation(s)
- Andrea M Rivas-Castillo
- Universidad Tecnológica de la Zona Metropolitana del Valle de México, Miguel Hidalgo y Costilla 5, Col. Los Héroes de Tizayuca, 43816, Tizayuca, Hgo, México
| | - Alejandro Valdez-Calderón
- Universidad Tecnológica de la Zona Metropolitana del Valle de México, Miguel Hidalgo y Costilla 5, Col. Los Héroes de Tizayuca, 43816, Tizayuca, Hgo, México
| | - Arturo F Angeles-Padilla
- Universidad Tecnológica de la Zona Metropolitana del Valle de México, Miguel Hidalgo y Costilla 5, Col. Los Héroes de Tizayuca, 43816, Tizayuca, Hgo, México
| | - César B Figueroa-Ocampo
- Universidad Tecnológica de la Zona Metropolitana del Valle de México, Miguel Hidalgo y Costilla 5, Col. Los Héroes de Tizayuca, 43816, Tizayuca, Hgo, México
| | - Sandra Carrillo-Ibarra
- Escuela de Ciencias de la Salud, Universidad del Valle de México Campus Zapopan, Periférico Poniente 7900, Col. Jardines de Collí, 45010, Zapopan, Jal, México
| | - Maribel Quezada-Cruz
- Laboratorio de Tecnología Ambiental, Universidad Tecnológica de Tecámac, Carretera Federal México-Pachuca Km 37.5, Predio Sierra Hermosa, 55740, Tecámac, Edo, México
| | - Arian Espinosa-Roa
- CONACyT-Centro de Investigación en Química Aplicada, Unidad Monterrey, Alianza Sur 204, Parque de Innovación e Investigación Tecnológica (PIIT), 66628, Apodaca, N. L, México
| | - Brandon D Pérez-García
- Universidad Tecnológica de la Zona Metropolitana del Valle de México, Miguel Hidalgo y Costilla 5, Col. Los Héroes de Tizayuca, 43816, Tizayuca, Hgo, México
- Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada del IPN, Unidad Querétaro, Cerro Blanco 141, Col. Colinas del Cimatario, 76090, Santiago de Querétaro, Qro, México
| | - Norma G Rojas-Avelizapa
- Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada del IPN, Unidad Querétaro, Cerro Blanco 141, Col. Colinas del Cimatario, 76090, Santiago de Querétaro, Qro, México.
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Strangis G, Labardi M, Gallone G, Milazzo M, Capaccioli S, Forli F, Cinelli P, Berrettini S, Seggiani M, Danti S, Parchi P. 3D Printed Piezoelectric BaTiO 3/Polyhydroxybutyrate Nanocomposite Scaffolds for Bone Tissue Engineering. Bioengineering (Basel) 2024; 11:193. [PMID: 38391679 PMCID: PMC10886384 DOI: 10.3390/bioengineering11020193] [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: 12/31/2023] [Revised: 02/03/2024] [Accepted: 02/12/2024] [Indexed: 02/24/2024] Open
Abstract
Bone defects are a significant health problem worldwide. Novel treatment approaches in the tissue engineering field rely on the use of biomaterial scaffolds to stimulate and guide the regeneration of damaged tissue that cannot repair or regrow spontaneously. This work aimed at developing and characterizing new piezoelectric scaffolds to provide electric bio-signals naturally present in bone and vascular tissues. Mixing and extrusion were used to obtain nanocomposites made of polyhydroxybutyrate (PHB) as a matrix and barium titanate (BaTiO3) nanoparticles as a filler, at BaTiO3/PHB compositions of 5/95, 10/90, 15/85 and 20/80 (w/w%). The morphological, thermal, mechanical and piezoelectric properties of the nanocomposites were studied. Scanning electron microscopy analysis showed good nanoparticle dispersion within the polymer matrix. Considerable increases in the Young's modulus, compressive strength and the piezoelectric coefficient d31 were observed with increasing BaTiO3 content, with d31 = 37 pm/V in 20/80 (w/w%) BaTiO3/PHB. 3D printing was used to produce porous cubic-shaped scaffolds using a 90° lay-down pattern, with pore size ranging in 0.60-0.77 mm and good mechanical stability. Biodegradation tests conducted for 8 weeks in saline solution at 37 °C showed low mass loss (∼4%) for 3D printed scaffolds. The results obtained in terms of piezoelectric, mechanical and chemical properties of the nanocomposite provide a new promising strategy for vascularized bone tissue engineering.
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Affiliation(s)
- Giovanna Strangis
- Department of Civil and Industrial Engineering, University of Pisa, Largo L. Lazzarino 2, 56122 Pisa, Italy
| | - Massimiliano Labardi
- Institute for Chemical and Physical Processes (IPCF), National Research Council (CNR), Pisa Research Area, Via Moruzzi 1, 56124 Pisa, Italy
| | - Giuseppe Gallone
- Department of Civil and Industrial Engineering, University of Pisa, Largo L. Lazzarino 2, 56122 Pisa, Italy
| | - Mario Milazzo
- Department of Civil and Industrial Engineering, University of Pisa, Largo L. Lazzarino 2, 56122 Pisa, Italy
| | - Simone Capaccioli
- Institute for Chemical and Physical Processes (IPCF), National Research Council (CNR), Pisa Research Area, Via Moruzzi 1, 56124 Pisa, Italy
- Department of Physics "Enrico Fermi", University of Pisa, Largo Pontecorvo 3, 56127 Pisa, Italy
| | - Francesca Forli
- Department of Surgical, Medical, Molecular Pathology and Emergency Medicine, University of Pisa, 56126 Pisa, Italy
| | - Patrizia Cinelli
- Department of Civil and Industrial Engineering, University of Pisa, Largo L. Lazzarino 2, 56122 Pisa, Italy
- Institute for Chemical and Physical Processes (IPCF), National Research Council (CNR), Pisa Research Area, Via Moruzzi 1, 56124 Pisa, Italy
| | - Stefano Berrettini
- Department of Surgical, Medical, Molecular Pathology and Emergency Medicine, University of Pisa, 56126 Pisa, Italy
| | - Maurizia Seggiani
- Department of Civil and Industrial Engineering, University of Pisa, Largo L. Lazzarino 2, 56122 Pisa, Italy
| | - Serena Danti
- Department of Civil and Industrial Engineering, University of Pisa, Largo L. Lazzarino 2, 56122 Pisa, Italy
- Institute for Chemical and Physical Processes (IPCF), National Research Council (CNR), Pisa Research Area, Via Moruzzi 1, 56124 Pisa, Italy
| | - Paolo Parchi
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy
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9
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Anjana, Rawat S, Goswami S. Synergistic approach for enhanced production of polyhydroxybutyrate by Bacillus pseudomycoides SAS-B1: Effective utilization of glycerol and acrylic acid through fed-batch fermentation and its environmental impact assessment. Int J Biol Macromol 2024; 258:128764. [PMID: 38103666 DOI: 10.1016/j.ijbiomac.2023.128764] [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: 08/01/2023] [Revised: 12/07/2023] [Accepted: 12/11/2023] [Indexed: 12/19/2023]
Abstract
The continual rise in the consumption of petroleum-based synthetic polymers raised a significant environmental concern. Bacillus pseudomycoides SAS-B1 is a gram-positive rod-shaped halophilic bacterium capable of accumulating Polyhydroxybutyrate (PHB)-an intracellular biodegradable polymer. In the present study, the optimal conditions for cell cultivation in the seed media were developed. The optimal factors included a preservation age of 14 to 21 days (with 105 to 106 cells/mL), inoculum size of 0.1 % (w/v), 1 % (w/v) glucose, and growth temperature of 30 °C. The cells were then cultivated in a two-stage fermentation process utilizing glycerol and Corn Steep Liquor (CSL) as carbon and nitrogen sources, respectively. PHB yield was effectively increased from 2.01 to 9.21 g/L through intermittent feeding of glycerol and CSL, along with acrylic acid. FTIR, TGA, DSC, and XRD characterization studies were employed to enumerate the recovered PHB and determine its physicochemical properties. Additionally, the study assessed the cradle-to-gate Life Cycle Assessment (LCA) of PHB production, considering net CO2 generation and covering all major environmental impact categories. The production of 1000 kg of PHB resulted in lower stratospheric ozone depletion and comparatively reduced carbon dioxide emissions (2022.7 kg CO2 eq.) and terrestrial ecotoxicity (9.54 kg 1,4-DCB eq.) than typical petrochemical polymers.
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Affiliation(s)
- Anjana
- Division of Chemical Engineering, Centre of Innovative and Applied Bioprocessing, Knowledge City, Sector-81, Mohali, Punjab 140306, India; Department of Biotechnology, Regional Center for Biotechnology (RCB), Faridabad, Haryana 121001, India
| | - Shristhi Rawat
- Division of Chemical Engineering, Centre of Innovative and Applied Bioprocessing, Knowledge City, Sector-81, Mohali, Punjab 140306, India
| | - Saswata Goswami
- Division of Chemical Engineering, Centre of Innovative and Applied Bioprocessing, Knowledge City, Sector-81, Mohali, Punjab 140306, India; Department of Biotechnology, Regional Center for Biotechnology (RCB), Faridabad, Haryana 121001, India.
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10
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Pulingam T, Appaturi JN, Gayathiri M, Sudesh K. TiO 2 loaded on glycidol functionalized poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) nanobiocomposite film for photocatalytic and antibacterial activities. Int J Biol Macromol 2023; 253:127216. [PMID: 37793528 DOI: 10.1016/j.ijbiomac.2023.127216] [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: 06/07/2023] [Revised: 09/19/2023] [Accepted: 10/01/2023] [Indexed: 10/06/2023]
Abstract
The rapid acceleration of industrialization and urbanization has exacerbated water pollution, which is primarily caused by the presence of highly toxic, non-biodegradable contaminants in industrial waste and effluents. In response to this urgent issue, a novel nanobiocomposite film with titanium dioxide (TiO2) loaded onto a poly(3-hydroxybutyrate-co-18 mol% 3-hydroxyhexanoate) (18PHBH) matrix was developed to serve as an effective dual-function material with photocatalytic and antibacterial properties. Through Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR), Diffuse reflectance ultraviolet-visible (DRUV-Vis), Scanning Electron Microscope (SEM), and X-ray diffraction (XRD) analyses, the physicochemical properties of the TiO2/Gly/18PHBH nanobiocomposite film were exhaustively characterized, revealing effective TiO2 loading and uniform distribution on the film's surface. The film exhibited extraordinary photocatalytic degradation of methylene blue (MB) dye, with the 5TiO2/Gly/18PHBH film demonstrating the greatest efficiency. In addition, antibacterial testing revealed that the film was effective against 99.8 % of Staphylococcus aureus and 96.9 % of Pseudomonas aeruginosa. These results demonstrate the potential of polyhydroxyalkanoate-based films as exceptional nanoparticle matrices and position the 5TiO2/Gly/18PHBH film as a versatile candidate for applications in photocatalysis and antibacterial interventions, providing innovative solutions to critical environmental challenges.
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Affiliation(s)
- Thiruchelvi Pulingam
- School of Biological Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia
| | | | - Muniandy Gayathiri
- School of Biological Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Kumar Sudesh
- School of Biological Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia.
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11
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de Sousa Junior RR, Cezario FEM, Antonino LD, dos Santos DJ, Lackner M. Characterization of Poly(3-hydroxybutyrate) (P3HB) from Alternative, Scalable (Waste) Feedstocks. Bioengineering (Basel) 2023; 10:1382. [PMID: 38135973 PMCID: PMC10740857 DOI: 10.3390/bioengineering10121382] [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: 10/31/2023] [Revised: 11/23/2023] [Accepted: 11/29/2023] [Indexed: 12/24/2023] Open
Abstract
Bioplastics hold significant promise in replacing conventional plastic materials, linked to various serious issues such as fossil resource consumption, microplastic formation, non-degradability, and limited end-of-life options. Among bioplastics, polyhydroxyalkanoates (PHA) emerge as an intriguing class, with poly(3-hydroxybutyrate) (P3HB) being the most utilized. The extensive application of P3HB encounters a challenge due to its high production costs, prompting the investigation of sustainable alternatives, including the utilization of waste and new production routes involving CO2 and CH4. This study provides a valuable comparison of two P3HBs synthesized through distinct routes: one via cyanobacteria (Synechocystis sp. PCC 6714) for photoautotrophic production and the other via methanotrophic bacteria (Methylocystis sp. GB 25) for chemoautotrophic growth. This research evaluates the thermal and mechanical properties, including the aging effect over 21 days, demonstrating that both P3HBs are comparable, exhibiting physical properties similar to standard P3HBs. The results highlight the promising potential of P3HBs obtained through alternative routes as biomaterials, thereby contributing to the transition toward more sustainable alternatives to fossil polymers.
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Affiliation(s)
- Rogerio Ramos de Sousa Junior
- Center for Engineering, Modeling and Applied Social Sciences, Federal University of ABC, Santo André 09210-580, Brazil; (R.R.d.S.J.); (F.E.M.C.); (L.D.A.)
| | - Fabiano Eduardo Marques Cezario
- Center for Engineering, Modeling and Applied Social Sciences, Federal University of ABC, Santo André 09210-580, Brazil; (R.R.d.S.J.); (F.E.M.C.); (L.D.A.)
| | - Leonardo Dalseno Antonino
- Center for Engineering, Modeling and Applied Social Sciences, Federal University of ABC, Santo André 09210-580, Brazil; (R.R.d.S.J.); (F.E.M.C.); (L.D.A.)
| | - Demetrio Jackson dos Santos
- Center for Engineering, Modeling and Applied Social Sciences, Federal University of ABC, Santo André 09210-580, Brazil; (R.R.d.S.J.); (F.E.M.C.); (L.D.A.)
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12
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Blunt W, Shah P, Vasquez V, Ye M, Doyle C, Liu Y, Saeidlou S, Monteil-Rivera F. Biosynthesis and properties of polyhydroxyalkanoates synthesized from mixed C 5 and C 6 sugars obtained from hardwood hydrolysis. N Biotechnol 2023; 77:40-49. [PMID: 37390901 DOI: 10.1016/j.nbt.2023.06.005] [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: 04/18/2023] [Revised: 06/26/2023] [Accepted: 06/27/2023] [Indexed: 07/02/2023]
Abstract
Glucose and xylose are fermentable sugars readily available from lignocellulosic biomass, and are a sustainable carbon substrate supporting industrial biotechnology. Three strains were assessed in this work - Paraburkholderia sacchari, Hydrogenophaga pseudoflava, and Bacillus megaterium - for their ability to uptake both C5 and C6 sugars contained in a hardwood hydrolysate produced via a thermomechanical pulping-based process with concomitant production of poly(3-hydroxyalkanoate) (PHA) biopolymers. In batch conditions, B. megaterium showed poor growth after 12 h, minimal uptake of xylose throughout the cultivation, and accumulated a maximum of only 25 % of the dry biomass as PHA. The other strains simultaneously utilized both sugars, although glucose uptake was faster than xylose. From hardwood hydrolysate, P. sacchari accumulated 57 % of its biomass as PHA within 24 h, whereas H. pseudoflava achieved an intracellular PHA content of 84 % by 72 h. The molecular weight of the PHA synthesized by H. pseudoflava (520.2 kDa) was higher than that of P. sacchari (265.5 kDa). When the medium was supplemented with propionic acid, the latter was rapidly consumed by both strains and incorporated as 3-hydroxyvalerate subunits into the polymer, demonstrating the potential for production of polymers with improved properties and value. H. pseudoflava incorporated 3-hydroxyvalerate subunits with at least a 3-fold higher yield, and produced polymers with higher 3-hydroxyvalerate content than P. sacchari. Overall, this work has shown that H. pseudoflava can be an excellent candidate for bioconversion of lignocellulosic sugars to PHA polymers or copolymers as part of an integrated biorefinery.
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Affiliation(s)
- Warren Blunt
- Aquatic and Crop Resource Development Research Centre, National Research Council Canada, 6100 Royalmount Avenue, Montreal, Québec, Canada H4P 2R2; Department of Biosystems Engineering, University of Manitoba (Fort Garry Campus), 75 Chancellors Circle, Winnipeg, MB, Canada R3T 5V6.
| | - Purnank Shah
- FPInnovations, 570 Boulevard Saint-Jean, Pointe-Claire, Québec, Canada H9R 3J9
| | - Vinicio Vasquez
- Aquatic and Crop Resource Development Research Centre, National Research Council Canada, 6100 Royalmount Avenue, Montreal, Québec, Canada H4P 2R2
| | - Mengwei Ye
- Aquatic and Crop Resource Development Research Centre, National Research Council Canada, 6100 Royalmount Avenue, Montreal, Québec, Canada H4P 2R2
| | - Christopher Doyle
- Aquatic and Crop Resource Development Research Centre, National Research Council Canada, 6100 Royalmount Avenue, Montreal, Québec, Canada H4P 2R2
| | - Yali Liu
- Aquatic and Crop Resource Development Research Centre, National Research Council Canada, 6100 Royalmount Avenue, Montreal, Québec, Canada H4P 2R2
| | - Sajjad Saeidlou
- Automotive and Surface Transportation Research Centre, National Research Council Canada, 75 de Mortagne Boulevard, Boucherville, Québec, Canada J4B 6Y4
| | - Fanny Monteil-Rivera
- Aquatic and Crop Resource Development Research Centre, National Research Council Canada, 6100 Royalmount Avenue, Montreal, Québec, Canada H4P 2R2.
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Senila L, Gál E, Kovacs E, Cadar O, Dan M, Senila M, Roman C. Poly(3-hydroxybutyrate) Production from Lignocellulosic Wastes Using Bacillus megaterium ATCC 14581. Polymers (Basel) 2023; 15:4488. [PMID: 38231921 PMCID: PMC10708134 DOI: 10.3390/polym15234488] [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: 10/05/2023] [Revised: 11/13/2023] [Accepted: 11/20/2023] [Indexed: 01/19/2024] Open
Abstract
This study aimed to analyze the production of poly(3-hydroxybutyrate) (PHB) from lignocellulosic biomass through a series of steps, including microwave irradiation, ammonia delignification, enzymatic hydrolysis, and fermentation, using the Bacillus megaterium ATCC 14581 strain. The lignocellulosic biomass was first pretreated using microwave irradiation at different temperatures (180, 200, and 220 °C) for 10, 20, and 30 min. The optimal pretreatment conditions were determined using the central composite design (CCD) and the response surface methodology (RSM). In the second step, the pretreated biomass was subjected to ammonia delignification, followed by enzymatic hydrolysis. The yield obtained for the pretreated and enzymatically hydrolyzed biomass was lower (70.2%) compared to the pretreated, delignified, and enzymatically hydrolyzed biomass (91.4%). These hydrolysates were used as carbon substrates for the synthesis of PHB using Bacillus megaterium ATCC 14581 in batch cultures. Various analytical methods were employed, namely nuclear magnetic resonance (1H-NMR and13C-NMR), electrospray ionization mass spectrometry (EI-MS), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and thermogravimetric analysis (TGA), to identify and characterize the extracted PHB. The XRD analysis confirmed the partially crystalline nature of PHB.
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Affiliation(s)
- Lacrimioara Senila
- Research Institute for Analytical Instrumentation Subsidiary, National Institute for Research and Development of Optoelectronics Bucharest INOE 2000, 67 Donath Street, 400293 Cluj-Napoca, Romania; (E.K.); (O.C.); (M.S.); (C.R.)
| | - Emese Gál
- Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, 11 Arany Janos Street, 400028 Cluj-Napoca, Romania;
| | - Eniko Kovacs
- Research Institute for Analytical Instrumentation Subsidiary, National Institute for Research and Development of Optoelectronics Bucharest INOE 2000, 67 Donath Street, 400293 Cluj-Napoca, Romania; (E.K.); (O.C.); (M.S.); (C.R.)
- Faculty of Horticulture, University of Agricultural Sciences and Veterinary Medicine, 3–5 Manastur Street, 400372 Cluj-Napoca, Romania
| | - Oana Cadar
- Research Institute for Analytical Instrumentation Subsidiary, National Institute for Research and Development of Optoelectronics Bucharest INOE 2000, 67 Donath Street, 400293 Cluj-Napoca, Romania; (E.K.); (O.C.); (M.S.); (C.R.)
| | - Monica Dan
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67–103 Donath Street, 400293 Cluj-Napoca, Romania;
| | - Marin Senila
- Research Institute for Analytical Instrumentation Subsidiary, National Institute for Research and Development of Optoelectronics Bucharest INOE 2000, 67 Donath Street, 400293 Cluj-Napoca, Romania; (E.K.); (O.C.); (M.S.); (C.R.)
| | - Cecilia Roman
- Research Institute for Analytical Instrumentation Subsidiary, National Institute for Research and Development of Optoelectronics Bucharest INOE 2000, 67 Donath Street, 400293 Cluj-Napoca, Romania; (E.K.); (O.C.); (M.S.); (C.R.)
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14
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Ciftcioglu-Gozuacik B, Ulutug FC, Denizli A, Dizge N, Karagunduz A, Keskinler B. Simultaneous production of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) from recovered volatile fatty acid with treatment of leachate by Pilot-Scale Mechanical Vapor Recompression. BIORESOURCE TECHNOLOGY 2023; 388:129743. [PMID: 37716573 DOI: 10.1016/j.biortech.2023.129743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 08/31/2023] [Accepted: 09/06/2023] [Indexed: 09/18/2023]
Abstract
Serious global problems faced due to many petroleum-based materials in the last century, which is called the plastic age, constitute the main motivation of this research. Considering wastewater treatment from this perspective, both the recovery of organic acids from wastewater and their conversion into bioplastics are extremely important in terms of reducing petroleum dependency. In this study, while the treatment of landfill leachate was provided with biological process integrated into Mechanical Vapor Recompression (MVR), simultaneously PHBV production was carried out with 84.9% recovered VFA as carbon source. The effects of C/N/P ratio and feeding regime on PHBV storage were investigated by Cupriavidus necator. PHBV storage of 96% (g PHBV/g DCW) was maximized by 2-stage feeding and nitrogen restriction. The ratio of 3HV to 3HB of PHBV was 45%. In addition, extracted PHBV was compared with standard PHA in terms of thermal and chemical properties with FTIR, XRD, TGA and DSC analyses.
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Affiliation(s)
| | - Fatma-Cansu Ulutug
- Department of Environmental Engineering, Gebze Technical University, Kocaeli 41400, Turkey
| | - Aslı Denizli
- Department of Environmental Engineering, Gebze Technical University, Kocaeli 41400, Turkey
| | - Nadir Dizge
- Department of Environmental Engineering, Mersin University, Mersin 33343, Turkey
| | - Ahmet Karagunduz
- Department of Environmental Engineering, Gebze Technical University, Kocaeli 41400, Turkey
| | - Bulent Keskinler
- Department of Environmental Engineering, Gebze Technical University, Kocaeli 41400, Turkey.
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15
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Rofeal M, Abdelmalek F, Pietrasik J. Sustainable Polyhydroxyalkanoate Production from Food Waste via Bacillus mycoides ICRI89: Enhanced 3D Printing with Poly (Methyl Methacrylate) Blend. Polymers (Basel) 2023; 15:4173. [PMID: 37896417 PMCID: PMC10610804 DOI: 10.3390/polym15204173] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 10/08/2023] [Accepted: 10/18/2023] [Indexed: 10/29/2023] Open
Abstract
In view of implementing green technologies for bioplastic turning polices, novel durable feedstock for Bacillus mycoides ICRI89 used for efficient polyhydroxybutyrate (PHB) generation is proposed herein. First, two food waste (FW) pretreatment methods were compared, where the ultrasonication approach for 7 min was effective in easing the following enzymatic action. After treatment with a mixture of cellulase/amylases, an impressive 25.3 ± 0.22 g/L of glucose was liberated per 50 g of FW. Furthermore, a notable 2.11 ± 0.06 g/L PHB and 3.56 ± 0.11 g/L cell dry eight (CDW) over 120 h were generated, representing a productivity percentage of 59.3 wt% using 25% FW hydrolysate. The blend of polyhydroxybutyrate/poly (methyl methacrylate) (PHB/PMMA = 1:2) possessed the most satisfactory mechanical properties. For the first time, PHB was chemically crosslinked with PMMA using dicumyl peroxide (DCP), where a concentration of 0.3 wt% had a considerable effect on increasing the mechanical stability of the blend. FTIR analysis confirmed the molecular interaction between PHB and PMMA showing a modest expansion of the C=O stretching vibration at 1725 cm-1. The DCP-PHB/PMMA blend had significant thermal stability and biodegradation profiles comparable to those of the main constituent polymers. More importantly, a 3-Dimetional (3D) filament was successfully extruded with a diameter of 1.75 mm, where no blockages or air bubbles were noticed via SEM. A new PHB/PMMA "key of life" 3D model has been printed with a filling percentage of 60% and a short printing time of 19.2 min. To conclude, high-performance polymeric 3D models have been fabricated to meet the pressing demands for future applications of sustainable polymers.
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Affiliation(s)
- Marian Rofeal
- International Center for Research on Innovative Biobased Materials (ICRI-BioM)—International Research Agenda, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland
- Department of Botany and Microbiology, Faculty of Science, Alexandria University, Alexandria 21521, Egypt
- Chemical Engineering Department, Polytechnique Montreal, Montreal, QC H3T 1J4, Canada
| | - Fady Abdelmalek
- International Center for Research on Innovative Biobased Materials (ICRI-BioM)—International Research Agenda, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland
- Department of Engineering Physics, Polytechnique Montreal, Montreal, QC H3T 1J4, Canada
| | - Joanna Pietrasik
- Faculty of Chemistry, Institute of Polymer and Dye Technology, Lodz University of Technology, Stefanowskiego 16, 90-537 Lodz, Poland;
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16
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Salahuddin N, Gaber M, Mousa M, Elfiky M. Dopamine / Artesunate loaded polyhydroxybutyrate-g-cellulose- magnetite zinc oxide core shell nanocomposites: Synergistic antimicrobial and anticancer efficacy. Int J Biol Macromol 2023; 248:125348. [PMID: 37330083 DOI: 10.1016/j.ijbiomac.2023.125348] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 06/02/2023] [Accepted: 06/10/2023] [Indexed: 06/19/2023]
Abstract
In this study, polyhydroxybutyrate-g-cellulose - Fe3O4/ZnO (PHB-g-cell- Fe3O4/ZnO) nanocomposites (NCs) was synthesized and used as a delivery system for Dopamine (DO) /Artesunate (ART) drugs. Different types of cells (Ccell, Scell, Pcell) grafted with PHB were designed and mixed with different contents of Fe3O4/ZnO. Physical and chemical features of PHB-g-cell-Fe3O4/ZnO NCs were detected by FTIR, XRD, dynamic light scattering, transmission electron microscopy, and scanning electron microscopy. ART/DO drugs were loaded into PHB-g-cell- Fe3O4/ZnO NCs by single emulsion technique. The rate of drugs release was studied at different pHs (5.4, 7.4). Owing to the overlap between the absorption bands of both drugs, differential pulse adsorptive cathodic stripping voltammetry (DP-AdCSV) was used for the estimation of ART. To study the mechanism of ART and DO release, zero-order, first order, Hixon Crowell, Higuchi and Korsmeyer-Peppas models were applied to the experiment results. The results showed that Ic50 of ART @PHB-g-Ccell-10% DO@ Fe3O4/ZnO, ART @PHB-g-Pcell-10% DO@ Fe3O4/ZnO and ART @PHB-g-Scell-10% DO@ Fe3O4/ZnO were 21.22, 12.3, and 18.11 μg/mL, respectively. The results revealed that ART @PHB-g-Pcell-10% DO@ Fe3O4/ZnO was more effective against HCT-116 than the carriers loaded by a single drug. The antimicrobial efficacy of the nano-loaded drugs was considerably improved compared with free drugs.
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Affiliation(s)
| | - Mohamed Gaber
- Chemistry Department, Faculty of Science, Tanta 31527, Egypt
| | - Maie Mousa
- Chemistry Department, Faculty of Science, Tanta 31527, Egypt
| | - Mona Elfiky
- Chemistry Department, Faculty of Science, Tanta 31527, Egypt
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17
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Ahuja S, Bains O, Mittal M, Kamal R, Aggarwal NK, Arora S. Multifunctional chromone-incorporated poly(hydroxybutyrate) luminescent film for active and intelligent food packaging. Int J Biol Macromol 2023; 246:125625. [PMID: 37392906 DOI: 10.1016/j.ijbiomac.2023.125625] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 06/14/2023] [Accepted: 06/28/2023] [Indexed: 07/03/2023]
Abstract
The major objective of present work was to fabricate poly(hydroxybutyrate) based luminescent films for genuine food packaging applications. These films were synthesized by incorporating varying Chromone (CH) concentrations (5, 10, 15, 20, and 25 wt%) into poly(hydroxybutyrate) (PHB) matrix through solvent-casting. Different characteristics of prepared films were examined using Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), Thermogravimetric analysis (TGA), Mechanical testing, and Time-resolved photoluminescence (TRPL). UV-blocking properties and water vapor permeation were also examined. FTIR spectra indicated the occurrence of hydrogen bonding between PHB and CH. Among all prepared film samples, PHB/CH15 showed maximum tensile strength (22.5 MPa) with enhanced barrier ability against water vapor and UV rays, thermal stability, and luminescent performance. After overall analysis, PHB/CH15 film was selected to investigate its X-ray diffraction, release behavior, DPPH scavenging, and antimicrobial potential. Release kinetics revealed that the cumulative release percentage of CH was higher in fatty acid stimulant. Moreover, results suggested that this film demonstrated antioxidant activity (>55 %) and superior antimicrobial potential against Aspergillus niger, Staphylococcus aureus, and Escherichia coli. Furthermore, packaging of bread samples using PHB/CH15 film demonstrated the complete inhibition of microbial growth in bread up to 10 days of storage and ensure the safety of genuine food products.
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Affiliation(s)
- Simran Ahuja
- Department of Chemistry, Kurukshetra University, Kurukshetra 136119, India.
| | - Omkar Bains
- Department of Chemistry, Kurukshetra University, Kurukshetra 136119, India
| | - Mahak Mittal
- Department of Microbiology, Kurukshetra University, Kurukshetra 136119, India
| | - Raj Kamal
- Department of Chemistry, Kurukshetra University, Kurukshetra 136119, India
| | - Neeraj K Aggarwal
- Department of Microbiology, Kurukshetra University, Kurukshetra 136119, India.
| | - Sanjiv Arora
- Department of Chemistry, Kurukshetra University, Kurukshetra 136119, India.
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18
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Bhende PP, Chauhan R, Waigaonkar S, Bragança JM, Ganguly A. Composites of Bacillus megaterium H16 derived poly-3-hydroxybutyrate as a biomaterial for skin tissue engineering. Int J Biol Macromol 2023:125355. [PMID: 37327940 DOI: 10.1016/j.ijbiomac.2023.125355] [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: 02/03/2023] [Revised: 06/02/2023] [Accepted: 06/10/2023] [Indexed: 06/18/2023]
Abstract
Composite films of Bacillus megaterium H16 derived PHB with 1%Poly-L-lactic acid (PLLA), 1%Poly-ε-caprolactone (PCL), and 0.3 % graphene nanoplatelets (GNP) were produced by solvent cast method. The composite films were characterized by SEM, DSC-TGA, XRD, and ATR-FTIR. The ultrastructure of PHB and its composites depicted an irregular surface morphology with pores after the evaporation of chloroform. The GNPs were seen to be integrated inside the pores. The B. megaterium H16 derived-PHB and its composites demonstrated good biocompatibility which was evaluated in vitro on HaCaT and L929 cells by MTT assay. The cell viability was best for PHB followed by PHB/PLLA/PCL > PHB/PLLA/GNP > PHB/PLLA. PHB and its composites were highly hemocompatible as it resulted in <1 % hemolysis. The PHB/PLLA/PCL and PHB/PLLA/GNP composites can serve as ideal biomaterials for skin tissue engineering.
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Affiliation(s)
- Prajakta Praveen Bhende
- Department of Biological Sciences, BITS Pilani KK Birla Goa Campus, Zuarinagar, Goa 403726, India.
| | - Rashmi Chauhan
- Department of Chemistry, BITS Pilani KK Birla Goa Campus, Zuarinagar, Goa 403726, India.
| | - Sachin Waigaonkar
- Department of Mechanical Engineering, BITS Pilani KK Birla Goa Campus, Zuarinagar, Goa 403726, India.
| | - Judith M Bragança
- Department of Biological Sciences, BITS Pilani KK Birla Goa Campus, Zuarinagar, Goa 403726, India.
| | - Anasuya Ganguly
- Department of Biological Sciences, BITS Pilani KK Birla Goa Campus, Zuarinagar, Goa 403726, India.
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19
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de Melo RN, de Souza Hassemer G, Steffens J, Junges A, Valduga E. Recent updates to microbial production and recovery of polyhydroxyalkanoates. 3 Biotech 2023; 13:204. [PMID: 37223002 PMCID: PMC10200728 DOI: 10.1007/s13205-023-03633-9] [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: 01/20/2023] [Accepted: 05/12/2023] [Indexed: 05/25/2023] Open
Abstract
The increasing use of synthetic polymers and their disposal has raised concern due to their adverse effects on the environment. Thus, other sustainable alternatives to synthetic plastics have been sought, such as polyhydroxyalkanoates (PHAs), which are promising microbial polyesters, mainly due to their compostable nature, biocompatibility, thermostability, and resilience, making this biopolymer acceptable in several applications in the global market. The large-scale production of PHAs by microorganisms is still limited by the high cost of production compared to conventional plastics. This review reports some strategies mentioned in the literature aimed at production and recovery, paving the way for the bio-based economy. For this, some aspects of PHAs are addressed, such as synthesis, production systems, process control using by-products from industries, and advances and challenges in the downstream. The bioplastics properties made them a prime candidate for food, pharmaceutical, and chemical industrial applications. With this paper, it is possible to see that biodegradable polymers are promising materials, mainly for reducing the pollution produced by polymers derived from petroleum.
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Affiliation(s)
- Rafaela Nery de Melo
- Department of Food and Chemical Engineering, URI-Erechim, Sete de Setembro Av, Erechim, RS 162199709-910 Brazil
| | - Guilherme de Souza Hassemer
- Department of Food and Chemical Engineering, URI-Erechim, Sete de Setembro Av, Erechim, RS 162199709-910 Brazil
| | - Juliana Steffens
- Department of Food and Chemical Engineering, URI-Erechim, Sete de Setembro Av, Erechim, RS 162199709-910 Brazil
| | - Alexander Junges
- Department of Food and Chemical Engineering, URI-Erechim, Sete de Setembro Av, Erechim, RS 162199709-910 Brazil
| | - Eunice Valduga
- Department of Food and Chemical Engineering, URI-Erechim, Sete de Setembro Av, Erechim, RS 162199709-910 Brazil
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20
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Abdelmalek F, Rofeal M, Pietrasik J, Steinbüchel A. Novel Biodegradable Nanoparticulate Chain-End Functionalized Polyhydroxybutyrate-Caffeic Acid with Multifunctionalities for Active Food Coatings. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2023; 11:7123-7135. [PMID: 37180027 PMCID: PMC10171369 DOI: 10.1021/acssuschemeng.3c00389] [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: 01/19/2023] [Revised: 04/14/2023] [Indexed: 05/15/2023]
Abstract
The bioactivities of polyhydroxyalkanoates have been curtailed owing to the lack of bioactive functional groups in their backbones. In this regard, polyhydroxybutyrate (PHB) produced from new locally isolated Bacillus nealsonii ICRI16 was chemically modified for enhancing its functionality, stability as well as solubility. First, PHB was transformed to PHB-diethanolamine (PHB-DEA) by transamination. Subsequently, for the first time, the chain ends of the polymer were substituted by caffeic acid molecules (CafA), generating novel PHB-DEA-CafA. The chemical structure of such a polymer was confirmed by Fourier-transform infrared (FTIR) spectroscopy and proton nuclear magnetic resonance (1H NMR). The modified polyester demonstrated improved thermal behavior compared to PHB-DEA as was shown by thermogravimetric analysis, derivative thermogravimetry, and differential scanning calorimetry analyses. Interestingly, 65% of PHB-DEA-CafA was biodegraded in a clay soil environment after 60 days at 25 °C, while 50% of PHB was degraded within the same period. On another avenue, PHB-DEA-CafA nanoparticles (NPs) were successfully prepared with an impressive mean particle size of 223 ± 0.12 nm and high colloidal stability. The nanoparticulate polyester had powerful antioxidant capacity with an IC50 of 32.2 mg/mL, which was the result of CafA loading in the polymer chain. More importantly, the NPs had a considerable effect on the bacterial behavior of four food pathogens, inhibiting 98 ± 0.12% of Listeria monocytogenes DSM 19094 after 48 h of exposure. Finally, the raw polish sausage coated with NPs had a significantly lower bacterial count of 2.11 ± 0.21 log cfu/g in comparison to other groups. When all these positive features are recognized, the polyester described herein could be considered as a good candidate for commercial active food coatings.
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Affiliation(s)
- Fady Abdelmalek
- International
Center for Research on Innovative Biobased Materials (ICRI-BioM)—International
Research Agenda, Lodz University of Technology, Zeromskiego 116, Lodz 90-924, Poland
| | - Marian Rofeal
- International
Center for Research on Innovative Biobased Materials (ICRI-BioM)—International
Research Agenda, Lodz University of Technology, Zeromskiego 116, Lodz 90-924, Poland
- Department
of Botany and Microbiology, Faculty of Science, Alexandria University, Alexandria 21521, Egypt
| | - Joanna Pietrasik
- Faculty
of Chemistry, Institute of Polymer and Dye Technology, Lodz University of Technology, Stefanowskiego 16, Lodz 90-537, Poland
| | - Alexander Steinbüchel
- International
Center for Research on Innovative Biobased Materials (ICRI-BioM)—International
Research Agenda, Lodz University of Technology, Zeromskiego 116, Lodz 90-924, Poland
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21
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Mittal M, Ahuja S, Yadav A, Aggarwal NK. Development of poly(hydroxybutyrate) film incorporated with nano silica and clove essential oil intended for active packaging of brown bread. Int J Biol Macromol 2023; 233:123512. [PMID: 36739047 DOI: 10.1016/j.ijbiomac.2023.123512] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/25/2023] [Accepted: 01/29/2023] [Indexed: 02/05/2023]
Abstract
The objective of current study was to develop Poly(hydroxybutyrate) (PHB) based active packaging film with long lasting antimicrobial potential in food-packaging applications. For developing such films, PHB was incorporated with poly(ethylene glycol) (PEG) as a plasticizer, nano-silica (n-Si) as strengthening material and clove essential oil (CEO) as an antimicrobial agent. These solvent-casted films with varying concentration of n-Si (0.5, 1, 1.5, 2 %) and 30 % CEO of total polymer matrix weight i.e., PHB/PEG (90/10) were prepared and studied on the basis of morphological, mechanical, thermal, degradation and antimicrobial behaviours. The presence of CEO and n-Si was confirmed by Fourier transform infrared spectroscopy (FTIR). Scanning Electron Microscopy (SEM) and X-ray diffraction (XRD) were used to investigate homogeneous dispersal of n-Si in polymer matrix. PHB/PEG/CEO/Si 1.0 film was selected as optimized one after mechanical testing and therefore further carried for antimicrobial testing. This selected film extended the shelf-life of brown bread up to 10 days comparable to bread wrapped in polyethylene. This revealed that PHB/PEG/CEO/Si 1.0 exhibited superior antibacterial activity against the food borne microbes i.e., Escherichia coli, Staphylococcus aureus and Aspergillus niger. Our findings indicate that this film improved the shelf-life of packaged bread and has promising features for active food packaging.
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Affiliation(s)
- Mahak Mittal
- Laboratory of Fermentation Technology, Department of Microbiology, Kurukshetra 136119, Haryana, India
| | - Simran Ahuja
- Department of Chemistry, Kurukshetra 136119, Haryana, India
| | - Anita Yadav
- Department of Biotechnology, Kurukshetra 136119, Haryana, India.
| | - Neeraj K Aggarwal
- Laboratory of Fermentation Technology, Department of Microbiology, Kurukshetra 136119, Haryana, India.
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22
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Aytar Celik P, Barut D, Enuh BM, Erdogan Gover K, Nural Yaman B, Burcin Mutlu M, Cabuk A. A novel higher polyhydroxybutyrate producer Halomonas halmophila 18H with unique cell factory attributes. BIORESOURCE TECHNOLOGY 2023; 372:128669. [PMID: 36702321 DOI: 10.1016/j.biortech.2023.128669] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 01/19/2023] [Accepted: 01/20/2023] [Indexed: 06/18/2023]
Abstract
For cost-competitive biosynthesis of polyhydroxybutyrate (PHB), the screening of efficient producers and characterization of their genomic potential is fundamental. In this study, 94 newly isolated halophilic strains from Turkish salterns were screened for their polyhydroxyalkanoates (PHAs) biosynthesis capabilities through fermentation. Halomonas halmophila 18H was found to be the highest PHB producer, yielding 63.72 % of its biomass as PHB. The PHB produced by this strain was physically and chemically characterized using various techniques. Its genome was also sequenced and found to be large (6,713,657 bp) and have a GC content of 59.9 %. Halomonas halmophila 18H was also found to have several copies of PHB biosynthesis genes, as well as 20 % more protein-coding genes and 1075 singletons compared to other high PHB producers. These unique genomic features make it a promising cell factory for the simultaneous production of PHAs and other biotechnologically important secondary metabolites.
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Affiliation(s)
- Pinar Aytar Celik
- Environmental Protection and Control Program, Eskisehir Osmangazi University, 26110 Eskisehir, Turkey; Department of Biotechnology and Biosafety, Graduate School of Natural and Applied Sciences, Eskisehir Osmangazi University, 26040 Eskisehir, Turkey.
| | - Dilan Barut
- Department of Biotechnology and Biosafety, Graduate School of Natural and Applied Sciences, Eskisehir Osmangazi University, 26040 Eskisehir, Turkey
| | - Blaise Manga Enuh
- Department of Biotechnology and Biosafety, Graduate School of Natural and Applied Sciences, Eskisehir Osmangazi University, 26040 Eskisehir, Turkey
| | - Kubra Erdogan Gover
- Department of Biotechnology and Biosafety, Graduate School of Natural and Applied Sciences, Eskisehir Osmangazi University, 26040 Eskisehir, Turkey
| | - Belma Nural Yaman
- Department of Biotechnology and Biosafety, Graduate School of Natural and Applied Sciences, Eskisehir Osmangazi University, 26040 Eskisehir, Turkey; Department of Biomedical Engineering, Eskisehir Osmangazi University, 26040 Eskisehir, Turkey
| | - Mehmet Burcin Mutlu
- Department of Biology, Faculty of Science, Eskisehir Technical University, Eskisehir, Turkey
| | - Ahmet Cabuk
- Department of Biotechnology and Biosafety, Graduate School of Natural and Applied Sciences, Eskisehir Osmangazi University, 26040 Eskisehir, Turkey; Department of Biology, Faculty of Science, Eskisehir Osmangazi University, Eskisehir, Turkey
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23
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Anjana, Rawat S, Goswami S. In-silico analysis of a halophilic bacterial isolate-Bacillus pseudomycoides SAS-B1 and its polyhydroxybutyrate production through fed-batch approach under differential salt conditions. Int J Biol Macromol 2023; 229:372-387. [PMID: 36563813 DOI: 10.1016/j.ijbiomac.2022.12.190] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 12/08/2022] [Accepted: 12/17/2022] [Indexed: 12/24/2022]
Abstract
Polyhydroxybutyrate (PHB) is a natural biopolymer and a viable substitute for petroleum-derived polymers that possess immense potential for diverse applications. In the present study, PHB was produced by a halophilic bacteria identified as Bacillus pseudomycoides SAS-B1 by 16S rRNA gene sequencing. The bacterial genome was evaluated through complete genome sequencing, which elucidated a 5,338,308 bp genome with 34.88 % of G + C content and 5660 genes. Other genome attributes were analyzed such as functional profiling, gene ontology, and metabolic pathways. Genes involved in PHB biochemical pathway were identified such as phaA, phaB, and phaC. Furthermore, sodium-dependent transporters and other ATP-binding genes were identified in the genome that may be involved in sodium uptake during saline conditions. The PHB production by B. pseudomycoides SAS-B1 was examined under differential salt conditions. The PHB yield was increased from 3.14 ± 0.02 g/L to 6.12 ± 0.04 g/L when salinity was increased upto 20 g/L with intermittent feeding of glucose and corn steep liquor. FTIR, NMR, and GC-MS studies elucidated the presence of desired functional groups, molecular structure, and monomeric compositions of PHB respectively. Further, TGA revealed the thermal stability of the recovered PHB upto (220-230) °C and has a crystallinity index of upto 33 ± 0.5 % as confirmed by XRD analysis.
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Affiliation(s)
- Anjana
- Division of Chemical Engineering, Centre of Innovative and Applied Bioprocessing, Knowledge City, Sector-81, Mohali, Punjab 140306, India
| | - Shristhi Rawat
- Division of Chemical Engineering, Centre of Innovative and Applied Bioprocessing, Knowledge City, Sector-81, Mohali, Punjab 140306, India
| | - Saswata Goswami
- Division of Chemical Engineering, Centre of Innovative and Applied Bioprocessing, Knowledge City, Sector-81, Mohali, Punjab 140306, India.
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24
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Davaritouchaee M, Mosleh I, Dadmohammadi Y, Abbaspourrad A. One-Step Oxidation of Orange Peel Waste to Carbon Feedstock for Bacterial Production of Polyhydroxybutyrate. Polymers (Basel) 2023; 15:polym15030697. [PMID: 36771998 PMCID: PMC9920450 DOI: 10.3390/polym15030697] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 01/25/2023] [Accepted: 01/28/2023] [Indexed: 01/31/2023] Open
Abstract
Orange peels are an abundant food waste stream that can be converted into useful products, such as polyhydroxyalkanoates (PHAs). Limonene, however, is a key barrier to building a successful biopolymer synthesis from orange peels as it inhibits microbial growth. We designed a one-pot oxidation system that releases the sugars from orange peels while eliminating limonene through superoxide (O2• -) generated from potassium superoxide (KO2). The optimum conditions were found to be treatment with 0.05 M KO2 for 1 h, where 55% of the sugars present in orange peels were released and recovered. The orange peel sugars were then used, directly, as a carbon source for polyhydroxybutyrate (PHB) production by engineered Escherichia coli. Cell growth was improved in the presence of the orange peel liquor with 3 w/v% exhibiting 90-100% cell viability. The bacterial production of PHB using orange peel liquor led to 1.7-3.0 g/L cell dry weight and 136-393 mg (8-13 w/w%) ultra-high molecular weight PHB content (Mw of ~1900 kDa) during a 24 to 96 h fermentation period. The comprehensive thermal characterization of the isolated PHBs revealed polymeric properties similar to PHBs resulting from pure glucose or fructose. Our one-pot oxidation process for liberating sugars and eliminating inhibitory compounds is an efficient and easy method to release sugars from orange peels and eliminate limonene, or residual limonene post limonene extraction, and shows great promise for extracting sugars from other complex biomass materials.
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25
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Zou Y, Yang M, Tao Q, Zhu K, Liu X, Wan C, Harder MK, Yan Q, Liang B, Ntaikou I, Antonopoulou G, Lyberatos G, Zhang Y. Recovery of polyhydroxyalkanoates (PHAs) polymers from a mixed microbial culture through combined ultrasonic disruption and alkaline digestion. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 326:116786. [PMID: 36410150 DOI: 10.1016/j.jenvman.2022.116786] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 10/26/2022] [Accepted: 11/12/2022] [Indexed: 06/16/2023]
Abstract
PHAs are a form of cellular storage polymers with diverse structural and material properties, and their biodegradable and renewable nature makes them a potential green alternative to fossil fuel-based plastics. PHAs are obtained through extraction via various mechanical, physical and chemical processes after their intracellular synthesis. Most studies have until now focused on pure cultures, while information on mixed microbial cultures (MMC) remains limited. In this study, ultrasonic (US) disruption and alkaline digestion by NaOH were applied individually and in combination to obtain PHAs products from an acclimated MMC using phenol as the carbon source. Various parameters were tested, including ultrasonic sound energy density, NaOH concentration, treatment time and temperature, and biomass density. US alone caused limited cell lysis and resulted in high energy consumption and low efficiency. NaOH of 0.05-0.2 M was more efficient in cell disruption, but led to PHAs degradation under elevated temperature and prolonged treatment. Combining US and NaOH significantly improved the overall process efficiency, which could reduce energy consumption by 2/3rds with only minimal PHAs degradation. The most significant factor was identified to be NaOH dosage and treatment time, with US sound energy density playing a minor role. Under the semi-optimized condition (0.2 M NaOH, 1300 W L-1, 10 min), over 70% recovery and 80% purity were achieved from a 3 g L-1 MMC slurry of approximately 50% PHAs fraction. The material and thermal properties of the products were analyzed, and the polymers obtained from US + NaOH treatments showed comparable or higher molecular weight to previously reported results. The products also exhibited good thermal stability and rheological properties, compared to the commercial standard. In conclusion, the combined US and NaOH method has the potential in real application as an efficient process to obtain high quality PHAs from MMC, and cost-effectiveness can be further optimized.
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Affiliation(s)
- Yuqi Zou
- Department of Environmental Science and Engineering, Fudan University, 2005 Songhu Road, Yangpu District, Shanghai, China
| | - Mingfeng Yang
- Department of Environmental Science and Engineering, Fudan University, 2005 Songhu Road, Yangpu District, Shanghai, China
| | - Qiuyue Tao
- Department of Environmental Science and Engineering, Fudan University, 2005 Songhu Road, Yangpu District, Shanghai, China
| | - Keliang Zhu
- Department of Environmental Science and Engineering, Fudan University, 2005 Songhu Road, Yangpu District, Shanghai, China
| | - Xiang Liu
- Department of Environmental Science and Engineering, Fudan University, 2005 Songhu Road, Yangpu District, Shanghai, China
| | - Chunli Wan
- Department of Environmental Science and Engineering, Fudan University, 2005 Songhu Road, Yangpu District, Shanghai, China
| | - Marie K Harder
- Values and Sustainability Research Group, Cockcroft Building, University of Brighton, Lewes Road, BN2 4GJ, United Kingdom
| | - Qun Yan
- School of Environmental and Civil Engineering, Jiangnan University, 1800 Lihu Avenue, Wuxi City, Jiangsu Province, China
| | - Bo Liang
- Adesso Advanced Materials Wuhu Co. Ltd., Bldg.6, Xinghui Science and Technology Industrial Park, Sanshan District, Wuhu City, Anhui Province, China
| | - Ioanna Ntaikou
- Institute of Chemical Engineering Sciences, Platani, Patras, GR 26504, Greece
| | | | - Gerasimos Lyberatos
- Institute of Chemical Engineering Sciences, Platani, Patras, GR 26504, Greece; School of Chemical Engineering, National Technical University of Athens, GR 15780 Athens, Greece
| | - Yi Zhang
- Department of Environmental Science and Engineering, Fudan University, 2005 Songhu Road, Yangpu District, Shanghai, China.
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26
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An efficient and reusable N,N-dimethylacetamide/LiCl solvent system for the extraction of high-purity polyhydroxybutyrate from bacterial biomass. Biochem Eng J 2023. [DOI: 10.1016/j.bej.2023.108812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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27
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Rizki WOS, Ratnaningsih E, Hertadi R. Production of poly-(R)-3-hydroxybutyrate from halophilic bacterium Salinivibrio sp. utilizing palm oil mill effluent as a carbon source. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Hung CM, Chen CW, Huang CP, Sheu DS, Dong CD. Metal-free catalysis for organic micropollutant degradation in waste activated sludge via poly(3-hydroxybutyrate) biopolymers using Cupriavidus sp. L7L coupled with peroxymonosulfate. BIORESOURCE TECHNOLOGY 2022; 361:127680. [PMID: 35878764 DOI: 10.1016/j.biortech.2022.127680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/18/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
This study employed a novel and environment-friendly biopolymer/oxidant catalytic system, viz., poly(3-hydroxybutyrate)/peroxymonosulfate (PHB/PMS), for pretreating wastewater sludge for the first time. Under optimal conditions, i.e., 3.1 × 10-4 M of PMS and 3.3 g/L of PHB at pH = 6.0, the PAHs in the sludge matrix was decreased by 79 % in 12 h. Increase in salinity (75 % synthetic seawater) achieved 83 % of PAHs degradation. Functional groups (CO) of the biopolymer matrix were active centers for biopolymer-mediated electron transfer that produced reactive oxygen species (SO4-, HO, and 1O2) for adsorption and catalytic oxidation of PAHs in the sludge. Functional metagenomic analysis revealed the main genus, Conexibacter (phylum, Actinobacteria) exhibited PAH-degrading function with high efficiency in the biodegradation of PAHs from sludge pretreated with PHB/PMS. Coupling chemical oxidation and biostimulation using bacterial polymer-based biomaterials is effective and beneficial for pretreating wastewater sludge toward circular bioeconomy.
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Affiliation(s)
- Chang-Mao Hung
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Chiu-Wen Chen
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Chin-Pao Huang
- Department of Civil and Environmental Engineering, University of Delaware, Newark, USA
| | - Der-Shyan Sheu
- Department of Marine Biotechnology, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Cheng-Di Dong
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan.
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29
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Bakhtiyar MJ, Raza ZA, Aslam M, Bajwa SZ, Shoaib Ur Rehman M, Rafiq S. Cupric oxide nanoparticles incorporated poly(hydroxybutyrate) nanocomposite for potential biosensing application. Int J Biol Macromol 2022; 213:1018-1028. [PMID: 35691435 DOI: 10.1016/j.ijbiomac.2022.06.018] [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: 03/27/2022] [Revised: 05/20/2022] [Accepted: 06/05/2022] [Indexed: 01/09/2023]
Abstract
We report the synthesis of a novel electrochemical biosensor comprising of cupric oxide (CuO) nanoparticles (NPs) mediated poly(hydroxybutyrate) (PHB) composite film with polyvinyl alcohol (PVA) as a binder/template support using the solution casting method for the detection of a biomolecule i.e., ascorbic acid (AA). The specimens were characterized for surface, chemical, mechanical, optical, and electrochemical attributes. The results expressed regular mediation of CuO NPs in the PHB/PVA matrix towards nanobiocomposite formation with enhanced crystallinity, inter-molecular interactions, mechanical, and electrochemical attributes, and decreased hydrophilicity and bandgap, thus being useful in potential optoelectronic devices. The synthesized biocomposite film exhibited a tensile strength of 86.24 ± 4.10 N which might be due to reinforcement/uniform dispersion of the CuO nanofiller in the PHB-based matrix. The PHB/CuO composite, then, deposited on a glassy carbon electrode surface exhibited good electrocatalytic activity towards the AA in the aqueous media even at low analyte concentrations. Such modified electrode surfaces with metal/biopolymer complex could find possible applications in the detection of other bioactive molecules.
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Affiliation(s)
| | - Zulfiqar Ali Raza
- Department of Applied Sciences, National Textile University, Faisalabad 37610, Pakistan.
| | - Muhammad Aslam
- Department of Applied Sciences, National Textile University, Faisalabad 37610, Pakistan.
| | - Sadia Zafar Bajwa
- National Institute for Biotechnology and Genetic Engineering, Faisalabad 577, Pakistan
| | | | - Samvia Rafiq
- Department of Applied Sciences, National Textile University, Faisalabad 37610, Pakistan
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30
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Etxabide A, Kilmartin PA, Guerrero P, de la Caba K, Hooks DO, West M, Singh T. Polyhydroxybutyrate (PHB) produced from red grape pomace: Effect of purification processes on structural, thermal and antioxidant properties. Int J Biol Macromol 2022; 217:449-456. [PMID: 35841959 DOI: 10.1016/j.ijbiomac.2022.07.072] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 07/05/2022] [Accepted: 07/09/2022] [Indexed: 11/05/2022]
Abstract
Red grape pomace was used as a source for poly(3-hydroxybutyrate) (PHB) production, which was then subject to a range of purification processes. The different PHB biopolymers were characterized for chemical structure, crystallinity, thermal properties, colour, release of compounds into different food simulants and antioxidant inhibition, and comparisons were made with a commercially available PHB. An increase in purification steps did not have a significant effect on the high thermal stability of the extracted biopolymer, but it decreased the degree of crystallinity and the presence of amino acids and aromatic compounds. With additional purification, the PHB powders also whitened and the number of components released from the biopolymer into food simulants decreased. The released compounds presented antioxidant inhibition, which has not been previously reported in the literature or with commercially available polyhydroxyalkanoates. This is of great interest for food packaging and biomedical industries where the addition of antioxidant additives to improve PHB functional properties may not be necessary and could be avoided.
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Affiliation(s)
- Alaitz Etxabide
- BIOMAT Research Group, University of the Basque Country (UPV/EHU), Escuela de Ingeniería de Gipuzkoa, Plaza de Europa 1, 20018 Donostia-San Sebastián, Spain.; School of Chemical Sciences 302, University of Auckland, 23 Symonds Street, Private Bag 92019, 1010 Auckland, New Zealand..
| | - Paul A Kilmartin
- School of Chemical Sciences 302, University of Auckland, 23 Symonds Street, Private Bag 92019, 1010 Auckland, New Zealand
| | - Pedro Guerrero
- BIOMAT Research Group, University of the Basque Country (UPV/EHU), Escuela de Ingeniería de Gipuzkoa, Plaza de Europa 1, 20018 Donostia-San Sebastián, Spain.; BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
| | - Koro de la Caba
- BIOMAT Research Group, University of the Basque Country (UPV/EHU), Escuela de Ingeniería de Gipuzkoa, Plaza de Europa 1, 20018 Donostia-San Sebastián, Spain.; BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
| | - David O Hooks
- Wood Science Design Scion, 49 Sala Street, Private Bag 3020, 3010 Rotorua, New Zealand
| | - Mark West
- Wood Science Design Scion, 49 Sala Street, Private Bag 3020, 3010 Rotorua, New Zealand
| | - Tripti Singh
- Wood Science Design Scion, 49 Sala Street, Private Bag 3020, 3010 Rotorua, New Zealand
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31
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Abdelmalek F, Steinbüchel A, Rofeal M. The Hyperproduction of Polyhydroxybutyrate Using Bacillus mycoides ICRI89 through Enzymatic Hydrolysis of Affordable Cardboard. Polymers (Basel) 2022; 14:polym14142810. [PMID: 35890586 PMCID: PMC9322056 DOI: 10.3390/polym14142810] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/06/2022] [Accepted: 07/08/2022] [Indexed: 12/14/2022] Open
Abstract
Bioplastics are contemplated as remarkable substitutes for conventional plastics to accommodate green technological advancements. However, their industrial production has not been fully implemented owing to the cost of carbon resources. From another perspective, valorizing different paper mill wastes has become a prominent research topic. These materials may serve as an affording sustainable feedstock for bioplastic production. Adjustment of cardboard waste hydrolysate as suitable fermentation media for production of bacterial polyhydroxyalkanoates (PHAs) has been investigated. Cardboard samples were defibered and dried before enzymatic hydrolysis. The enzymatic degradation of commercial cellulase was monitored over 15 days. Interestingly, 18.2 ± 0.2 g/L glucose yield was obtained from 50 g cardboard samples using a 1.5% (v/v) enzyme concentration. The samples exhibited maximum weight loss values of 69-73%. Meanwhile, five soil samples were collected from local sites in Lodz, Poland. A total of 31 bacterial isolates were screened and cultured on Nile blue plates. Analysis of the 16S rRNA gene sequence of the most potent producer revealed 100% similarity to Bacillus mycoides. Cardboard hydrolysates whole medium, modified MSM with cardboard hydrolysate and nitrogen depleted MSM with cardboard hydrolysate were utilized for PHA production, followed by PHA productivity and cell dry weight (CDW) estimation compared to glucose as a standard carbon source. An impressive PHA accumulation of 56% CDW was attained when the waste hydrolysate was used as a carbon source. FTIR and NMR analysis of the isolated PHA indicated that functional groups of the polymer were related to PHB (polyhydroxybutyrate). Thermal analysis demonstrates that PHB and PHB-CB (PHB produced from cardboard hydrolysate) have degradation temperatures of 380 and 369 °C, respectively, which reflect the high thermal stability and heat resistance compared to the same properties for a standard polymer. This is the first demonstration of full saccharification of corrugated cardboard paper waste for high-level production of PHA. In addition, the attained PHB productivity is one of the highest levels achieved from a real lignocellulosic waste.
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Affiliation(s)
- Fady Abdelmalek
- International Center for Research on Innovative Biobased Materials (ICRI-BioM)-International Research Agenda, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland; (F.A.); (A.S.)
| | - Alexander Steinbüchel
- International Center for Research on Innovative Biobased Materials (ICRI-BioM)-International Research Agenda, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland; (F.A.); (A.S.)
| | - Marian Rofeal
- International Center for Research on Innovative Biobased Materials (ICRI-BioM)-International Research Agenda, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland; (F.A.); (A.S.)
- Department of Botany and Microbiology, Faculty of Science, Alexandria University, Moharam Bek, Alexandria 21521, Egypt
- Correspondence:
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Kacanski M, Pucher L, Peral C, Dietrich T, Neureiter M. Cell Retention as a Viable Strategy for PHA Production from Diluted VFAs with Bacillus megaterium. Bioengineering (Basel) 2022; 9:bioengineering9030122. [PMID: 35324811 PMCID: PMC8945770 DOI: 10.3390/bioengineering9030122] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/13/2022] [Accepted: 03/14/2022] [Indexed: 01/01/2023] Open
Abstract
The production of biodegradable and biocompatible materials such as polyhydroxyalkanoates (PHAs) from waste-derived volatile fatty acids (VFAs) is a promising approach towards implementing a circular bioeconomy. However, VFA solutions obtained via acidification of organic wastes are usually too diluted for direct use in standard batch or fed-batch processes. To overcome these constraints, this study introduces a cell recycle fed-batch system using Bacillus megaterium uyuni S29 for poly(3-hydroxybutyrate) (P3HB) production from acetic acid. The concentrations of dry cell weight (DCW), P3HB, acetate, as well as nitrogen as the limiting substrate component, were monitored during the process. The produced polymer was characterized in terms of molecular weight and thermal properties after extraction with hypochlorite. The results show that an indirect pH-stat feeding regime successfully kept the strain fed without prompting inhibition, resulting in a dry cell weight concentration of up to 19.05 g/L containing 70.21% PHA. After appropriate adaptations the presented process could contribute to an efficient and sustainable production of biopolymers.
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Affiliation(s)
- Milos Kacanski
- Department of Agrobiotechnology, Institute of Environmental Biotechnology, University of Natural Resources and Life Sciences, Vienna, Konrad-Lorenz-Str. 20, 3430 Tulln, Austria; (M.K.); (L.P.)
| | - Lukas Pucher
- Department of Agrobiotechnology, Institute of Environmental Biotechnology, University of Natural Resources and Life Sciences, Vienna, Konrad-Lorenz-Str. 20, 3430 Tulln, Austria; (M.K.); (L.P.)
| | - Carlota Peral
- TECNALIA, Basque Research and Technology Alliance (BRTA), Parque Tecnólogico de Álava, Leonardo Da Vinci 1, 01510 Minano, Spain; (C.P.); (T.D.)
| | - Thomas Dietrich
- TECNALIA, Basque Research and Technology Alliance (BRTA), Parque Tecnólogico de Álava, Leonardo Da Vinci 1, 01510 Minano, Spain; (C.P.); (T.D.)
| | - Markus Neureiter
- Department of Agrobiotechnology, Institute of Environmental Biotechnology, University of Natural Resources and Life Sciences, Vienna, Konrad-Lorenz-Str. 20, 3430 Tulln, Austria; (M.K.); (L.P.)
- Correspondence: ; Tel.: +43-1-47654-97441
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A Review on Biological Synthesis of the Biodegradable Polymers Polyhydroxyalkanoates and the Development of Multiple Applications. Catalysts 2022. [DOI: 10.3390/catal12030319] [Citation(s) in RCA: 47] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Polyhydroxyalkanoates, or PHAs, belong to a class of biopolyesters where the biodegradable PHA polymer is accumulated by microorganisms as intracellular granules known as carbonosomes. Microorganisms can accumulate PHA using a wide variety of substrates under specific inorganic nutrient limiting conditions, with many of the carbon-containing substrates coming from waste or low-value sources. PHAs are universally thermoplastic, with PHB and PHB copolymers having similar characteristics to conventional fossil-based polymers such as polypropylene. PHA properties are dependent on the composition of its monomers, meaning PHAs can have a diverse range of properties and, thus, functionalities within this biopolyester family. This diversity in functionality results in a wide array of applications in sectors such as food-packaging and biomedical industries. In order for PHAs to compete with the conventional plastic industry in terms of applications and economics, the scale of PHA production needs to grow from its current low base. Similar to all new polymers, PHAs need continuous technological developments in their production and material science developments to grow their market opportunities. The setup of end-of-life management (biodegradability, recyclability) system infrastructure is also critical to ensure that PHA and other biobased biodegradable polymers can be marketed with maximum benefits to society. The biobased nature and the biodegradability of PHAs mean they can be a key polymer in the materials sector of the future. The worldwide scale of plastic waste pollution demands a reformation of the current polymer industry, or humankind will face the consequences of having plastic in every step of the food chain and beyond. This review will discuss the aforementioned points in more detail, hoping to provide information that sheds light on how PHAs can be polymers of the future.
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Guo W, Yang K, Qin X, Luo R, Wang H, Huang R. Polyhydroxyalkanoates in tissue repair and regeneration. ENGINEERED REGENERATION 2022. [DOI: 10.1016/j.engreg.2022.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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Trapé DV, López OV, Villar MA. Vinasse: from a residue to a high added value biopolymer. BIORESOUR BIOPROCESS 2021; 8:130. [PMID: 38650284 PMCID: PMC10992345 DOI: 10.1186/s40643-021-00476-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 12/01/2021] [Indexed: 11/10/2022] Open
Abstract
This work aimed to study the feasibility of using vinasse for polyhydroxybutyrate (PHB) production by Bacillus megaterium. To optimize the culture medium, a Box-Behnken design was employed considering carbon (C), nitrogen (N), and phosphorus (Ph) concentrations as independent variables and PHB productivity as the response variable. The productivity decreased when C or N were increased, probably due to the presence of phenolic compounds and the limitation of N for the production of PHB by Bacillus sp. bacteria. An additional experimental design to optimize the C/N ratio and growing conditions (fermentation time and temperature) was carried out. Fermentation time had a statistically significant effect on PHB productivity reaching 10.6 mg/L h. On the other hand, the variability in physicochemical properties of vinasse samples led to significant differences in PHB productivity. Lower productivity values were obtained when vinasse had higher values of DBO. Therefore, biopolymers production from vinasse is a feasible alternative to valorize this bioethanol by-product.
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Affiliation(s)
- Daiana V Trapé
- Planta Piloto de Ingeniería Química, PLAPIQUI (UNS-CONICET), Camino La Carrindanga Km. 7, 8000, Bahía Blanca, Argentina
- Departamento de Ingeniería Química, Universidad Nacional del Sur, Av. Alem 1253, 8000, Bahía Blanca, Argentina
| | - Olivia V López
- Planta Piloto de Ingeniería Química, PLAPIQUI (UNS-CONICET), Camino La Carrindanga Km. 7, 8000, Bahía Blanca, Argentina
- Departamento de Química, Universidad Nacional del Sur, Av. Alem 1253, 8000, Bahía Blanca, Argentina
| | - Marcelo A Villar
- Planta Piloto de Ingeniería Química, PLAPIQUI (UNS-CONICET), Camino La Carrindanga Km. 7, 8000, Bahía Blanca, Argentina.
- Departamento de Ingeniería Química, Universidad Nacional del Sur, Av. Alem 1253, 8000, Bahía Blanca, Argentina.
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Cho JY, Lee Park S, Lee HJ, Kim SH, Suh MJ, Ham S, Bhatia SK, Gurav R, Park SH, Park K, Yoo D, Yang YH. Polyhydroxyalkanoates (PHAs) degradation by the newly isolated marine Bacillus sp. JY14. CHEMOSPHERE 2021; 283:131172. [PMID: 34157624 DOI: 10.1016/j.chemosphere.2021.131172] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/17/2021] [Accepted: 06/05/2021] [Indexed: 06/13/2023]
Abstract
Polyhydroxyalkanoates (PHAs) are bioplastic substitutes for petroleum-derived plastics that may help to reduce the increasing environmental impact of plastic pollution. Among them, polyhydroxybutyrate (PHB) is a promising biopolymer, incentivizing many researchers to search for PHB-producing and PHB-degrading bacteria for improved PHB utilization. Many novel PHB-producing microorganisms have been discovered; however, relatively few PHB-degrading bacteria have been identified. Six PHB-degrading bacteria were found in marine soil and investigated their PHB-degrading abilities under various temperature and salinity conditions using solid-media based culture. Finally, thermotolerant and halotolerant PHB-degrader Bacillus sp. JY14 was selected. PHB degradation was confirmed by monitoring changes in the physical and chemical properties of PHB films incubated with Bacillus sp. JY14 using scanning electron microscopy, Fourier-transform infrared spectroscopy, and gel permeation chromatography. Further, PHB degradation ability of Bacillus sp. JY14 was measured in liquid culture by gas chromatography. After 14 days of cultivation with PHB film, Bacillus sp. JY14 achieved approximately 98% PHB degradation. Applying various bioplastics to assess the bacteria's biodegradation capabilities, the result showed that Bacillus sp. JY14 could also degrade P(3HB-co-4HB) and P(3HB-co-3HV). Overall, this study identified a thermotolerant and halotolerant bacteria capable of PHB degradation under solid and liquid conditions. These results suggest that this bacteria could be utilized to degrade various PHAs.
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Affiliation(s)
- Jang Yeon Cho
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea
| | - Sol Lee Park
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea
| | - Hong-Ju Lee
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea
| | - Sang Hyun Kim
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea
| | - Min Ju Suh
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea
| | - Sion Ham
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea
| | - Shashi Kant Bhatia
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea; Institute for Ubiquitous Information Technology and Application, Konkuk University, Seoul, Republic of Korea
| | - Ranjit Gurav
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea
| | - See-Hyoung Park
- Department of Biological and Chemical Engineering, Hongik University, Sejong City, Republic of Korea
| | - Kyungmoon Park
- Department of Biological and Chemical Engineering, Hongik University, Sejong City, Republic of Korea
| | - Dongwon Yoo
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Yung-Hun Yang
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea; Institute for Ubiquitous Information Technology and Application, Konkuk University, Seoul, Republic of Korea.
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Shin G, Jeong DW, Kim H, Park SA, Kim S, Lee JY, Hwang SY, Park J, Oh DX. Biosynthesis of Polyhydroxybutyrate with Cellulose Nanocrystals Using Cupriavidus necator. Polymers (Basel) 2021; 13:2604. [PMID: 34451143 PMCID: PMC8398664 DOI: 10.3390/polym13162604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/30/2021] [Accepted: 08/03/2021] [Indexed: 11/16/2022] Open
Abstract
Polyhydroxybutyrate (PHB) is a natural polyester synthesized by several microorganisms. Moreover, it has excellent biodegradability and is an eco-friendly material because it converts water and carbon dioxide as final decomposition products. However, the applications of PHB are limited because of its stiffness and brittleness. Because cellulose nanocrystals (CNCs) have excellent intrinsic mechanical properties such as high specific strength and modulus, they may compensate for the insufficient physical properties of PHB by producing their nanocomposites. In this study, natural polyesters were extracted from Cupriavidus necator fermentation with CNCs, which were well-dispersed in nitrogen-limited liquid culture media. Fourier-transform infrared spectroscopy results revealed that the additional O-H peak originating from cellulose at 3500-3200 cm-1 was observed for PHB along with the C=O and -COO bands at 1720 cm-1. This suggests that PHB-CNC nanocomposites could be readily obtained using C. necator fermented in well-dispersed CNC-supplemented culture media.
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Affiliation(s)
- Giyoung Shin
- Research Center for Bio-Based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan 44429, Korea
| | - Da-Woon Jeong
- Research Center for Bio-Based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan 44429, Korea
| | - Hyeri Kim
- Research Center for Bio-Based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan 44429, Korea
| | - Seul-A Park
- Research Center for Bio-Based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan 44429, Korea
| | - Semin Kim
- Research Center for Bio-Based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan 44429, Korea
| | - Ju Young Lee
- Research Center for Bio-Based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan 44429, Korea
| | - Sung Yeon Hwang
- Research Center for Bio-Based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan 44429, Korea
- Advanced Materials and Chemical Engineering, University of Science and Technology (UST), Daejeon 34113, Korea
| | - Jeyoung Park
- Research Center for Bio-Based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan 44429, Korea
- Advanced Materials and Chemical Engineering, University of Science and Technology (UST), Daejeon 34113, Korea
| | - Dongyeop X Oh
- Research Center for Bio-Based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan 44429, Korea
- Advanced Materials and Chemical Engineering, University of Science and Technology (UST), Daejeon 34113, Korea
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Muthuraj R, Valerio O, Mekonnen TH. Recent developments in short- and medium-chain- length Polyhydroxyalkanoates: Production, properties, and applications. Int J Biol Macromol 2021; 187:422-440. [PMID: 34324901 DOI: 10.1016/j.ijbiomac.2021.07.143] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/12/2021] [Accepted: 07/20/2021] [Indexed: 02/07/2023]
Abstract
Developing renewable resource-based plastics with complete biodegradability and a minimal carbon footprint can open new opportunities to effectively manage the end-of-life plastics waste and achieve a low carbon society. Polyhydroxyalkanoates (PHAs) are biobased and biodegradable thermoplastic polyesters that accumulate in microorganisms (e.g., bacterial, microalgal, and fungal species) as insoluble and inert intracellular inclusion. The PHAs recovery from microorganisms, which typically involves cell lysis, extraction, and purification, provides high molecular weight and purified polyesters that can be compounded and processed using conventional plastics converting equipment. The physio-chemical, thermal, and mechanical properties of the PHAs are comparable to traditional synthetic polymers such as polypropylene and polyethylene. As a result, it has attracted substantial applications interest in packaging, personal care, coatings, agricultural and biomedical uses. However, PHAs have certain performance limitations (e.g. slow crystallization), and substantially more expensive than many other polymers. As such, more research and development is required to enable them for extensive use. This review provides a critical review of the recent progress achieved in PHAs production using different microorganisms, downstream processing, material properties, processing avenues, recycling, aerobic and anaerobic biodegradation, and applications.
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Affiliation(s)
- Rajendran Muthuraj
- Worn Again Technologies Ltd, Bio City, Pennyfoot St, NG1 1GF Nottingham, Nottinghamshire, United Kingdom
| | - Oscar Valerio
- Departamento de Ingeniería Química, Universidad de Concepción, Concepción, Chile
| | - Tizazu H Mekonnen
- Department of Chemical Engineering, Institute of Polymer Research, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON, Canada.
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Boey JY, Mohamad L, Khok YS, Tay GS, Baidurah S. A Review of the Applications and Biodegradation of Polyhydroxyalkanoates and Poly(lactic acid) and Its Composites. Polymers (Basel) 2021; 13:1544. [PMID: 34065779 PMCID: PMC8150976 DOI: 10.3390/polym13101544] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/12/2021] [Accepted: 03/15/2021] [Indexed: 12/12/2022] Open
Abstract
Overconsumption of plastic goods and improper handling of petroleum-derived plastic waste have brought a plethora of negative impacts to the environment, ecosystem and human health due to its recalcitrance to degradation. These drawbacks become the main driving force behind finding biopolymers with the degradable properties. With the advancement in biopolymer research, polyhydroxyalkanoate (PHA) and poly(lacyic acid) (PLA) and its composites have been alluded to as a potential alternative to replace the petrochemical counterpart. This review highlights the current synthesis process and application of PHAs and PLA and its composites for food packaging materials and coatings. These biopolymers can be further ameliorated to enhance their applicability and are discussed by including the current commercially available packaging products. Factors influencing biodegradation are outlined in the latter part of this review. The main aim of this review article is to organize the scattered available information on various aspects of PHAs and PLA, and its composites for packaging application purposes. It is evident from a literature survey of about 140 recently published papers from the past 15 years that PLA and PHA show excellent physical properties as potential food packaging materials.
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Affiliation(s)
| | | | | | | | - Siti Baidurah
- School of Industrial Technology, Universiti Sains Malaysia, Minden 11800, Malaysia; (J.Y.B.); (L.M.); (Y.S.K.); (G.S.T.)
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Rami Reddy Tadi S, Dutt Ravindran S, Balakrishnan R, Sivaprakasam S. Recombinant production of poly-(3-hydroxybutyrate) by Bacillus megaterium utilizing millet bran and rapeseed meal hydrolysates. BIORESOURCE TECHNOLOGY 2021; 326:124800. [PMID: 33556706 DOI: 10.1016/j.biortech.2021.124800] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 01/25/2021] [Accepted: 01/27/2021] [Indexed: 06/12/2023]
Abstract
Fermentative poly-3-hydroxybutyrate (PHB) production is mainly limited by the cost of raw material. In this present study, low-cost feedstock viz., millet bran residue (MBRH) and rapeseed meal hydrolysates were successfully utilized for PHB production. Metabolic engineering of Bacillus megaterium by co-expression of both precursor (phbRBC) and NADPH cofactor regeneration (zwf) genes resulted in 2.67-fold enhancement in PHB accumulation compared to wild strain. Modified logistic model characterized B.megaterium growth and PHB production effectively. The kinetic analysis proved that maximum cell concentration (15.01 g.L-1) and growth-associated constant (0.22 g.g-1) were found to be higher for initial MBRH concentration (S0 = 20 g.L-1). PHB production kinetics elucidated its expression in B.megaterium was growth-associated. PHB synthesized by B.megaterium was characterized using FTIR, NMR, XRD, DSC/TGA, FESEM and the physio-chemical properties enumerated its as a potential biodegradable plastic for industrial application.
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Affiliation(s)
- Subbi Rami Reddy Tadi
- BioPAT Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Som Dutt Ravindran
- Department of Biotechnology, Manipal Institute of Technology, Manipal 576104, Karnataka, India
| | - Rengesh Balakrishnan
- Department of Pharmaceutical Technology, Mahendra Engineering College, Namakkal District 637503, Tamil Nadu, India
| | - Senthilkumar Sivaprakasam
- BioPAT Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
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Zheng S, Zhang G, Wang H, Long Z, Wei T, Li Q. Progress in ultrasound-assisted extraction of the value-added products from microorganisms. World J Microbiol Biotechnol 2021; 37:71. [PMID: 33763773 DOI: 10.1007/s11274-021-03037-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 03/09/2021] [Indexed: 12/17/2022]
Abstract
Extracting value-added products from microorganisms is an important research focus for the future. Among the many extraction methods, ultrasound-assisted extraction (UAE) has attracted more attention owing to its advantages in reducing working time, increasing yield, and improving the quality of the extract. This review summarizes the use of UAE value-added products from microorganisms, with the main extracted substances are pigments, lipids, polysaccharides, and proteins. In addition, this work also summarizes the mechanism of UAE and highlights the factors that affect UAE operation, such as ultrasonic power intensity or power density, operation mode, and energy consumption, which need to be considered. All extraction products from microorganisms showed that UAE can effectively improve the extraction yields of value-added products. It also highlights the existing problems of the technology and possible future prospects. In general, the UAE of value-added substances from microorganisms is feasible and has the potential for development.
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Affiliation(s)
- Sijia Zheng
- School of Environment and Natural Resources, Renmin University of China, Beijing, 100872, China
| | - Guangming Zhang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China. .,School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China.
| | - HongJie Wang
- Institute of Ecology and Environmental Governance, Hebei University, Baoding, 071002, China.
| | - Zeqing Long
- School of Environment and Natural Resources, Renmin University of China, Beijing, 100872, China
| | - Ting Wei
- School of Environment and Natural Resources, Renmin University of China, Beijing, 100872, China
| | - Qiangang Li
- School of Environment and Natural Resources, Renmin University of China, Beijing, 100872, China
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Martínez-Herrera RE, Alemán-Huerta ME, Flores-Rodríguez P, Almaguer-Cantú V, Valencia-Vázquez R, Rosas-Flores W, Medrano-Roldán H, Ochoa-Martínez LA, Rutiaga-Quiñones OM. Utilization of Agave durangensis leaves by Bacillus cereus 4N for polyhydroxybutyrate (PHB) biosynthesis. Int J Biol Macromol 2021; 175:199-208. [PMID: 33548315 DOI: 10.1016/j.ijbiomac.2021.01.167] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 01/07/2021] [Accepted: 01/25/2021] [Indexed: 02/06/2023]
Abstract
Lignocellulosic wastes may provide a means to economize polyhydroxybutyrate (PHB) production. This study has proposed the use of Agave durangensis leaves obtained from the artisanal mezcal industry as a novel substrate for this aim. Results revealed an increase in PHB biosynthesis (0.32 g/L) and improvement in %PHB (16.79-19.51%) by Bacillus cereus 4N when A. durangensis leaves used as carbon source were physically pre-treated by ultrasound for 30 min (ADL + US30') and thermally pre-treated (ADL + Q). Chemical analyses and SEM studies revealed compositional and morphological changes when A. durangensis leaves were physically pre-treated. Also, elemental analysis of growth media showed that carbon/nitrogen ratios of 14-21, and low nitrogen, hydrogen, and protein content were well-suited for PHB biosynthesis. Confocal microscopy revealed morphological changes in the bacterial cell and carbonosome structure under the influence of different substrates. Finally, Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC) analyses showed that homopolymeric PHB with a high thermal-resistance (271.94-272.89 °C) was produced. Therefore, the present study demonstrates the potential use of physically pre-treated A. durangensis leaves to produce PHB. These results promote the development of a circular economy in Mexico, where lignocellulosic wastes can be employed to produce value-added biotechnological products.
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Affiliation(s)
- Raul E Martínez-Herrera
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Instituto de Biotecnología, Av. Pedro de Alba y Manuel L. Barragán s/n., C. P. 66455 San Nicolás de los Garza, Nuevo León, Mexico.
| | - María E Alemán-Huerta
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Instituto de Biotecnología, Av. Pedro de Alba y Manuel L. Barragán s/n., C. P. 66455 San Nicolás de los Garza, Nuevo León, Mexico.
| | - Paola Flores-Rodríguez
- Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional, (CIIDIR) IPN Unidad Durango, Laboratorio de Bioelectrónica, Calle Sigma 119, Fraccionamiento 20 de Noviembre II, C. P. 34220 Durango, Durango, Mexico
| | - Verónica Almaguer-Cantú
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Instituto de Biotecnología, Av. Pedro de Alba y Manuel L. Barragán s/n., C. P. 66455 San Nicolás de los Garza, Nuevo León, Mexico.
| | - Roberto Valencia-Vázquez
- Tecnológico Nacional de México/IT de Durango, Departamento de Ingenierías Química y Bioquímica, Felipe Pescador 1803 Ote, Colonia Nueva Vizcaya, C. P. 34080 Durango, Durango, Mexico
| | - Walfred Rosas-Flores
- Tecnológico Nacional de México/IT de Durango, Departamento de Ingenierías Química y Bioquímica, Felipe Pescador 1803 Ote, Colonia Nueva Vizcaya, C. P. 34080 Durango, Durango, Mexico.
| | - Hiram Medrano-Roldán
- Tecnológico Nacional de México/IT de Durango, Departamento de Ingenierías Química y Bioquímica, Felipe Pescador 1803 Ote, Colonia Nueva Vizcaya, C. P. 34080 Durango, Durango, Mexico
| | - L Araceli Ochoa-Martínez
- Tecnológico Nacional de México/IT de Durango, Departamento de Ingenierías Química y Bioquímica, Felipe Pescador 1803 Ote, Colonia Nueva Vizcaya, C. P. 34080 Durango, Durango, Mexico.
| | - O Miriam Rutiaga-Quiñones
- Tecnológico Nacional de México/IT de Durango, Departamento de Ingenierías Química y Bioquímica, Felipe Pescador 1803 Ote, Colonia Nueva Vizcaya, C. P. 34080 Durango, Durango, Mexico.
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Shahid S, Corroler D, Mosrati R, Amiel C, Gaillard JL. New model development for qualitative and quantitative analysis of microbial polyhydroxyalkanoates: A comparison of Fourier Transform Infrared Spectroscopy with Gas Chromatography. J Biotechnol 2021; 329:38-48. [PMID: 33539895 DOI: 10.1016/j.jbiotec.2021.01.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 01/15/2021] [Accepted: 01/20/2021] [Indexed: 02/04/2023]
Abstract
FT-IR spectroscopy is a non-destructive testing technique that requires minimal sample preparation time and allows the rapid characterization of structural features of complex, polymeric material. This technique has been frequently used in the past for the detection of PHA (Polyhydroxyalkanoates) but rarely for their quantification. In this work, by using cluster and discriminant statistical analysis of FT-IR data, different models are proposed for rapid identification of PHA monomers produced under different growth conditions by bacterial strains, and for their semi quantification. The results on the ability to produce large amounts of PHA (of 21 strains) in different environmental conditions of medium, substrates and deficiency of nutrients are presented. The spectral data analysis gives qualitative and semi quantitative information about the PHA produced in the samples. Models are proposed to test a large number of cultural conditions of strains and substrates in the field of screening and for identifying best conditions of PHA production in lab scale bioreactor and on industrial scale.
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Affiliation(s)
- Salma Shahid
- Department of Biochemistry, Govt College Women University Faisalabad, Pakistan.
| | - David Corroler
- Unité de Recherche ABTE, (Alimentation-Bioprocédés-Toxicologie-Environnements), EA 4651, Esplanade de la Paix, Université de Caen Normandie, 14032 Caen Cedex 5, France
| | - Ridha Mosrati
- Unité de Recherche ABTE, (Alimentation-Bioprocédés-Toxicologie-Environnements), EA 4651, Esplanade de la Paix, Université de Caen Normandie, 14032 Caen Cedex 5, France
| | - Caroline Amiel
- Unité de Recherche ABTE, (Alimentation-Bioprocédés-Toxicologie-Environnements), EA 4651, Esplanade de la Paix, Université de Caen Normandie, 14032 Caen Cedex 5, France
| | - Jean-Luc Gaillard
- Unité de Recherche ABTE, (Alimentation-Bioprocédés-Toxicologie-Environnements), EA 4651, Esplanade de la Paix, Université de Caen Normandie, 14032 Caen Cedex 5, France
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Singh S, Sithole B, Lekha P, Permaul K, Govinden R. Optimization of cultivation medium and cyclic fed-batch fermentation strategy for enhanced polyhydroxyalkanoate production by Bacillus thuringiensis using a glucose-rich hydrolyzate. BIORESOUR BIOPROCESS 2021; 8:11. [PMID: 38650248 PMCID: PMC10992944 DOI: 10.1186/s40643-021-00361-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 01/05/2021] [Indexed: 01/22/2023] Open
Abstract
The accumulation of petrochemical plastic waste is detrimental to the environment. Polyhydroxyalkanoates (PHAs) are bacterial-derived polymers utilized for the production of bioplastics. PHA-plastics exhibit mechanical and thermal properties similar to conventional plastics. However, high production cost and obtaining high PHA yield and productivity impedes the widespread use of bioplastics. This study demonstrates the concept of cyclic fed-batch fermentation (CFBF) for enhanced PHA productivity by Bacillus thuringiensis using a glucose-rich hydrolyzate as the sole carbon source. The statistically optimized fermentation conditions used to obtain high cell density biomass (OD600 of 2.4175) were: 8.77 g L-1 yeast extract; 66.63% hydrolyzate (v/v); a fermentation pH of 7.18; and an incubation time of 27.22 h. The CFBF comprised three cycles of 29 h, 52 h, and 65 h, respectively. After the third cyclic event, cell biomass of 20.99 g L-1, PHA concentration of 14.28 g L-1, PHA yield of 68.03%, and PHA productivity of 0.219 g L-1 h-1 was achieved. This cyclic strategy yielded an almost threefold increase in biomass concentration and a fourfold increase in PHA concentration compared with batch fermentation. FTIR spectra of the extracted PHAs display prominent peaks at the wavelengths unique to PHAs. A copolymer was elucidated after the first cyclic event, whereas, after cycles CFBF 2-4, a terpolymer was noted. The PHAs obtained after CFBF cycle 3 have a slightly higher thermal stability compared with commercial PHB. The cyclic events decreased the melting temperature and degree of crystallinity of the PHAs. The approach used in this study demonstrates the possibility of coupling fermentation strategies with hydrolyzate derived from lignocellulosic waste as an alternative feedstock to obtain high cell density biomass and enhanced PHA productivity.
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Affiliation(s)
- Sarisha Singh
- Discipline of Microbiology, University of KwaZulu-Natal (Westville Campus), Durban, South Africa.
| | - Bruce Sithole
- Biorefinery Industry Development Facility, Chemicals Cluster, Council for Scientific and Industrial Research, Durban, South Africa
- Discipline of Chemical Engineering, University of KwaZulu-Natal, Durban, South Africa
| | - Prabashni Lekha
- Biorefinery Industry Development Facility, Chemicals Cluster, Council for Scientific and Industrial Research, Durban, South Africa
| | - Kugenthiren Permaul
- Department of Biotechnology and Food Technology, Durban University of Technology, Durban, South Africa
| | - Roshini Govinden
- Discipline of Microbiology, University of KwaZulu-Natal (Westville Campus), Durban, South Africa
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Nygaard D, Yashchuk O, Noseda DG, Araoz B, Hermida ÉB. Improved fermentation strategies in a bioreactor for enhancing poly(3-hydroxybutyrate) (PHB) production by wild type Cupriavidus necator from fructose. Heliyon 2021; 7:e05979. [PMID: 33537471 PMCID: PMC7840857 DOI: 10.1016/j.heliyon.2021.e05979] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 11/20/2020] [Accepted: 01/11/2021] [Indexed: 11/26/2022] Open
Abstract
Poly(3-hydroxybutyrate) (PHB) belongs to the family of polyhydroxyalkanoates, biopolymers used for agricultural, industrial, or even medical applications. However, scaling up the production is still an issue due to the myriad of parameters involved in the fermentation processes. The present work seeks, firstly, to scale up poly(3-hydroxybutyrate) (PHB) production by wild type C. necator ATCC 17697 from shaken flasks to a stirred-tank bioreactor with the optimized media and fructose as carbon source. The second purpose is to improve the production of PHB by applying both the batch and fed-batch fermentation strategies in comparison with previous works of wild type C. necator with fructose. Furthermore, thinking of biomedical applications, physicochemical, and cytotoxicity analyses of the produced biopolymer, are presented. Fed-batch fermentation with an exponential feeding strategy enabled us to achieve the highest values of PHB concentration and productivity, 25.7 g/l and 0.43 g/(l h), respectively. The PHB productivity was 3.3 and 7.2 times higher than the one in batch strategy and shaken flask cultures, respectively. DSC, FTIR, 1H, and 13C NMR analysis led to determine that the biopolymer produced by C. necator ATCC 17697 has a molecular structure and characteristics in agreement with the commercial PHB. Additionally, the biopolymer does not induce cytotoxic effects on the NIH/3T3 cell culture. Due to the improved fermentation strategies, PHB concentration resulted in 40 % higher of the already reported one for wild type C. necator using other fed-batch modes and fructose as a carbon source. Thus the produced PHB could be attractive for biomedical applications, which generate a rising interest in polyhydroxyalkanoates during recent years.
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Affiliation(s)
- Daiana Nygaard
- School of Science and Technology, National University of San Martín (UNSAM), Av. 25 de mayo 1147, B1650HMK, San Martín, Buenos Aires, Argentina.,Argentine Council of Scientific and Technical Research (CONICET), Godoy Cruz 2290, C1425FQB, CABA, Argentina
| | - Oxana Yashchuk
- School of Science and Technology, National University of San Martín (UNSAM), Av. 25 de mayo 1147, B1650HMK, San Martín, Buenos Aires, Argentina.,Argentine Council of Scientific and Technical Research (CONICET), Godoy Cruz 2290, C1425FQB, CABA, Argentina
| | - Diego G Noseda
- Argentine Council of Scientific and Technical Research (CONICET), Godoy Cruz 2290, C1425FQB, CABA, Argentina.,Institute for Biotechnological Research, CONICET-UNSAM, 25 de Mayo y Francia, B1650HMK, San Martín, Buenos Aires, Argentina
| | - Beatriz Araoz
- School of Science and Technology, National University of San Martín (UNSAM), Av. 25 de mayo 1147, B1650HMK, San Martín, Buenos Aires, Argentina.,Argentine Council of Scientific and Technical Research (CONICET), Godoy Cruz 2290, C1425FQB, CABA, Argentina
| | - Élida B Hermida
- School of Science and Technology, National University of San Martín (UNSAM), Av. 25 de mayo 1147, B1650HMK, San Martín, Buenos Aires, Argentina.,Argentine Council of Scientific and Technical Research (CONICET), Godoy Cruz 2290, C1425FQB, CABA, Argentina
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McAdam B, Brennan Fournet M, McDonald P, Mojicevic M. Production of Polyhydroxybutyrate (PHB) and Factors Impacting Its Chemical and Mechanical Characteristics. Polymers (Basel) 2020; 12:polym12122908. [PMID: 33291620 PMCID: PMC7761907 DOI: 10.3390/polym12122908] [Citation(s) in RCA: 142] [Impact Index Per Article: 35.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 11/30/2020] [Accepted: 12/01/2020] [Indexed: 01/02/2023] Open
Abstract
Plastic pollution is fueling the grave environmental threats currently facing humans, the animal kingdom, and the planet. The pursuit of renewable resourced biodegradable materials commenced in the 1970s with the need for carbon neutral fully sustainable products driving important progress in recent years. The development of bioplastic materials is highlighted as imperative to the solutions to our global environment challenges and to the restoration of the wellbeing of our planet. Bio-based plastics are becoming increasingly sustainable and are expected to substitute fossil-based plastics. Bioplastics currently include both, nondegradable and biodegradable compositions, depending on factors including the origins of production and post-use management and conditions. Among the most promising materials being developed and evaluated is polyhydroxybutyrate (PHB), a microbial bioprocessed polyester belonging to the polyhydroxyalkanoate (PHA) family. This biocompatible and non-toxic polymer is biosynthesized and accumulated by a number of specialized bacterial strains. The favorable mechanical properties and amenability to biodegradation when exposed to certain active biological environments, earmark PHB as a high potential replacement for petrochemical based polymers such as ubiquitous high density polyethylene (HDPE). To date, high production costs, minimal yields, production technology complexities, and difficulties relating to downstream processing are limiting factors for its progression and expansion in the marketplace. This review examines the chemical, mechanical, thermal, and crystalline characteristics of PHB, as well as various fermentation processing factors which influence the properties of PHB materials.
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Schmid M, Raschbauer M, Song H, Bauer C, Neureiter M. Effects of nutrient and oxygen limitation, salinity and type of salt on the accumulation of poly(3-hydroxybutyrate) in Bacillus megaterium uyuni S29 with sucrose as a carbon source. N Biotechnol 2020; 61:137-144. [PMID: 33278638 DOI: 10.1016/j.nbt.2020.11.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 11/25/2020] [Accepted: 11/28/2020] [Indexed: 12/12/2022]
Abstract
Due to high manufacturing costs, industrial production and application of bio-based polyhydroxyalkanoates (PHA) as bioplastics remain below the expected potential. Improving yields and productivities during biotechnological production will contribute to eliminating existing shortcomings and should therefore be a priority in process development with new strains and substrates. The present study investigates key parameters such as different nutrient and oxygen limitation strategies and the salinity and type of salt to determine their impact on growth and poly(3-hydroxybutyrate) (P(3HB)) formation behaviour of Bacillus megaterium. The oxygen-limiting conditions applied resulted in a longer process duration and were found to be least effective with regard to P(3HB) content in the biomass. A higher P(3HB) content of 0.42 g g-1 was achieved when nitrogen was limited compared to 0.34 g g-1 under phosphate-limiting conditions; however, sucrose utilization was better when phosphate was limited. Replacing NaCl by KCl and evaluating different concentrations ranging from 0.08 to 1.7 mol L-1 in the process medium showed that B. megaterium has a higher tolerance to KCl as the biomass and P(3HB) formation was increased to 0.48 g g-1 compared to 0.36 g g-1. The combination of applying KCl instead of NaCl together with phosphorous limitation significantly increased P(3HB) productivity to 0.25 g L-1 h-1 compared to 0.09 g L-1 h-1. It can be concluded that the effective utilization of sucrose as a carbon source requires a combination of high nitrogen and low phosphorous concentration and a salt content of 0.6 g L-1 KCl for P(3HB) production with B. megaterium uyuni S29.
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Affiliation(s)
- Maximilian Schmid
- University of Natural Resources and Life Sciences, Vienna, Institute of Environmental Biotechnology, Tulln an der Donau, Austria
| | - Michaela Raschbauer
- University of Natural Resources and Life Sciences, Vienna, Institute of Environmental Biotechnology, Tulln an der Donau, Austria
| | - Hyunjeong Song
- University of Natural Resources and Life Sciences, Vienna, Institute of Environmental Biotechnology, Tulln an der Donau, Austria
| | - Cornelia Bauer
- University of Natural Resources and Life Sciences, Vienna, Institute of Environmental Biotechnology, Tulln an der Donau, Austria
| | - Markus Neureiter
- University of Natural Resources and Life Sciences, Vienna, Institute of Environmental Biotechnology, Tulln an der Donau, Austria.
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Martínez-Herrera RE, Alemán-Huerta ME, Almaguer-Cantú V, Rosas-Flores W, Martínez-Gómez VJ, Quintero-Zapata I, Rivera G, Rutiaga-Quiñones OM. Efficient recovery of thermostable polyhydroxybutyrate (PHB) by a rapid and solvent-free extraction protocol assisted by ultrasound. Int J Biol Macromol 2020; 164:771-782. [DOI: 10.1016/j.ijbiomac.2020.07.101] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/24/2020] [Accepted: 07/09/2020] [Indexed: 01/22/2023]
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Shahid S, Razzaq S, Farooq R, Nazli ZIH. Polyhydroxyalkanoates: Next generation natural biomolecules and a solution for the world's future economy. Int J Biol Macromol 2020; 166:297-321. [PMID: 33127548 DOI: 10.1016/j.ijbiomac.2020.10.187] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 10/21/2020] [Accepted: 10/23/2020] [Indexed: 02/08/2023]
Abstract
Petrochemical plastics have become a cause of pollution for decades and finding alternative plastics that are environmental friendly. Polyhydroxyalkanoate (PHA), a biopolyester produced by microbial cells, has characteristics (biocompatible, biodegradable, non-toxic) that make it appropriate as a biodegradable plastic substance. The different forms of PHA make it suitable to a wide choice of products, from packaging materials to biomedical applications. The major challenge in commercialization of PHA is the cost of manufacturing. There are a lot of factors that could affect the efficiency of a development method. The development of new strategic parameters for better synthesis, including consumption of low cost carbon substrates, genetic modification of PHA-producing strains, and fermentational strategies are discussed. Recently, many efforts have been made to develop a method for the cost-effective production of PHAs. The isolation, analysis as well as characterization of PHAs are significant factors for any developmental process. Due to the biodegradable and biocompatible properties of PHAs, they are majorly used in biomedical applications such as vascular grafting, heart tissue engineering, skin tissue repairing, liver tissue engineering, nerve tissue engineering, bone tissue engineering, cartilage tissue engineering and therapeutic carrier. The emerging and interesting area of research is the development of self-healing biopolymer that could significantly broaden the operational life and protection of the polymeric materials for a broad range of uses. Biodegradable and biocompatible polymers are considered as the green materials in place of petroleum-based plastics in the future.
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Affiliation(s)
- Salma Shahid
- Department of Biochemistry, Government College Women University Faisalabad, Pakistan.
| | - Sadia Razzaq
- Department of Chemistry, Government College Women University Faisalabad, Pakistan
| | - Robina Farooq
- Department of Chemistry, Government College Women University Faisalabad, Pakistan
| | - Zill-I-Huma Nazli
- Department of Chemistry, Government College Women University Faisalabad, Pakistan
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50
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