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Posada L, Jaramillo-Quiceno N, Castro C, Osorio M. Mucoadhesive capsules based on bacterial nanocellulose and chitosan as delivery system of turmeric extract. Heliyon 2023; 9:e21836. [PMID: 38034640 PMCID: PMC10682617 DOI: 10.1016/j.heliyon.2023.e21836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 10/27/2023] [Accepted: 10/30/2023] [Indexed: 12/02/2023] Open
Abstract
Current efforts in stomach-related drug design focus on improving drug bioavailability within the gastric region. Bacterial nanocellulose (BNC) has been established as a suitable material for drug delivery systems; however, it lacks adhesion to the gastric environment. This limitation can be addressed by leveraging the mucoadhesive properties of low molecular weight chitosan (LMWC). Therefore, we aimed to develop mucoadhesive capsules constructed from BNC coated with crosslinked LMWC, intended for targeted drug delivery in the gastric region. The capsules were characterized using scanning electron microscopy, infrared spectroscopy, thermogravimetric analysis, and mucoadhesion assessments. Under acidic conditions, crosslinked chitosan exhibited enhanced swelling relative to neutral conditions. The coating of chitosan onto the BNC fibrillar network of the capsules resulted in the superimposition of vibration bands and enhanced thermal stability. Furthermore, the capsules exhibited significant mucoadhesive properties in the gastric environment, with an attachment force measuring 89.151 ± 6.226 mN. To validate the efficacy of the system, we utilized antioxidant turmeric extract (TE) as a bioactive compound with chemopreventive potential against stomach cancer. TE was adsorbed onto BNC in a reversible multilayer system, enabling controlled adsorption and desorption. These findings highlight the significance of developing mucoadhesive capsules as a tailored drug delivery system for gastric conditions, particularly in the context of treating stomach diseases as cancer.
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Affiliation(s)
- Laia Posada
- School of Engineering, Universidad Pontificia Bolivariana, Circular 1°, No. 70-01, Medellín, 050031, Colombia
| | - Natalia Jaramillo-Quiceno
- School of Engineering, Universidad Pontificia Bolivariana, Circular 1°, No. 70-01, Medellín, 050031, Colombia
| | - Cristina Castro
- School of Engineering, Universidad Pontificia Bolivariana, Circular 1°, No. 70-01, Medellín, 050031, Colombia
| | - Marlon Osorio
- School of Engineering, Universidad Pontificia Bolivariana, Circular 1°, No. 70-01, Medellín, 050031, Colombia
- School of Health Science, Grupo de Investigación Biología de Sistemas, Universidad Pontificia Bolivariana, Calle 78B No. 72a-159, Medellín, 050036, Colombia
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Diaz-Ramirez J, Basasoro S, González K, Eceiza A, Retegi A, Gabilondo N. Integral Valorization of Grape Pomace for Antioxidant Pickering Emulsions. Antioxidants (Basel) 2023; 12:antiox12051064. [PMID: 37237930 DOI: 10.3390/antiox12051064] [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: 03/29/2023] [Revised: 04/28/2023] [Accepted: 05/02/2023] [Indexed: 05/28/2023] Open
Abstract
Full harnessing of grape pomace (GP) agricultural waste for the preparation of antioxidant Pickering emulsions is presented herein. Bacterial cellulose (BC) and polyphenolic extract (GPPE) were both prepared from GP. Rod-like BC nanocrystals up to 1.5 µm in length and 5-30 nm in width were obtained through enzymatic hydrolysis (EH). The GPPE obtained through ultrasound-assisted hydroalcoholic solvent extraction presented excellent antioxidant properties assessed using DPPH, ABTS and TPC assays. The BCNC-GPPE complex formation improved the colloidal stability of BCNC aqueous dispersions by decreasing the Z potential value up to -35 mV and prolonged the antioxidant half-life of GPPE up to 2.5 times. The antioxidant activity of the complex was demonstrated by the decrease in conjugate diene (CD) formation in olive oil-in-water emulsions, whereas the measured emulsification ratio (ER) and droplet mean size of hexadecane-in-water emulsions confirmed the physical stability improvement in all cases. The synergistic effect between nanocellulose and GPPE resulted in promising novel emulsions with prolonged physical and oxidative stability.
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Affiliation(s)
- Julen Diaz-Ramirez
- Materials+Technologies' Group, Engineering School of Gipuzkoa, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Pza. Europa 1, 20018 Donostia-San Sebastián, Spain
| | - Senda Basasoro
- Materials+Technologies' Group, Engineering School of Gipuzkoa, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Pza. Europa 1, 20018 Donostia-San Sebastián, Spain
| | - Kizkitza González
- Materials+Technologies' Group, Engineering School of Gipuzkoa, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Pza. Europa 1, 20018 Donostia-San Sebastián, Spain
| | - Arantxa Eceiza
- Materials+Technologies' Group, Engineering School of Gipuzkoa, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Pza. Europa 1, 20018 Donostia-San Sebastián, Spain
| | - Aloña Retegi
- Materials+Technologies' Group, Engineering School of Gipuzkoa, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Pza. Europa 1, 20018 Donostia-San Sebastián, Spain
| | - Nagore Gabilondo
- Materials+Technologies' Group, Engineering School of Gipuzkoa, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Pza. Europa 1, 20018 Donostia-San Sebastián, Spain
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3
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Cañas-Gutiérrez A, Toro L, Fornaguera C, Borrós S, Osorio M, Castro-Herazo C, Arboleda-Toro D. Biomineralization in Three-Dimensional Scaffolds Based on Bacterial Nanocellulose for Bone Tissue Engineering: Feature Characterization and Stem Cell Differentiation. Polymers (Basel) 2023; 15:polym15092012. [PMID: 37177163 PMCID: PMC10181035 DOI: 10.3390/polym15092012] [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: 02/24/2023] [Revised: 03/30/2023] [Accepted: 04/04/2023] [Indexed: 05/15/2023] Open
Abstract
Bacterial nanocellulose (BNC) has a negative surface charge in physiological environments, which allows the adsorption of calcium ions to initiate the nucleation of different calcium phosphate phases. The aim of this study was to investigate different methods of mineralization in three-dimensional microporous bacterial nanocellulose with the intention of mimicking the composition, structure, and biomechanical properties of natural bone. To generate the 3D microporous biomaterial, porogen particles were incorporated during BNC fermentation with the Komagataeibacter medellinensis strain. Calcium phosphates (CPs) were deposited onto the BNC scaffolds in five immersion cycles, alternating between calcium and phosphate salts in their insoluble forms. Scanning electron microscopy (SEM) showed that the scaffolds had different pore sizes (between 70 and 350 µm), and their porous interconnectivity was affected by the biomineralization method and time. The crystals on the BNC surface were shown to be rod-shaped, with a calcium phosphate ratio similar to that of immature bone, increasing from 1.13 to 1.6 with increasing cycle numbers. These crystals also increased in size with an increasing number of cycles, going from 25.12 to 35.9 nm. The main mineral phase observed with X-ray diffraction was octacalcium dihydrogen hexakis phosphate (V) pentahydrate (OCP). In vitro studies showed good cellular adhesion and high cell viability (up to 95%) with all the scaffolds. The osteogenic differentiation of human bone marrow mesenchymal stem cells on the scaffolds was evaluated using bone expression markers, including alkaline phosphatase, osteocalcin, and osteopontin. In conclusion, it is possible to prepare 3D BNC scaffolds with controlled microporosity that allow osteoblast adhesion, proliferation, and differentiation.
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Affiliation(s)
- Ana Cañas-Gutiérrez
- Research Group on New Materials (GINUMA), Faculty of Engineering, Universidad Pontificia Bolivariana, Circular 1 No. 70-01, Medellín 050031, Colombia
| | - Lenka Toro
- Biomedical Engineering Research Group (GIBEC), EIA University, Km 2 + 200 on the Way to the José María Córdova Airport, Alto de Las Palmas, Envigado 055428, Colombia
- Cancer Research Institute, Biomedical Research Center, University Science Park for Biomedicine, Slovak Academy of Sciences, 84505 Bratislava, Slovakia
| | - Cristina Fornaguera
- Grup d'Enginyeria de Materials (Gemat), Institut Químic de Sarrià (IQS), Universitat Ramon Llull (URL), Via Augusta 390, 08017 Barcelona, Spain
| | - Salvador Borrós
- Grup d'Enginyeria de Materials (Gemat), Institut Químic de Sarrià (IQS), Universitat Ramon Llull (URL), Via Augusta 390, 08017 Barcelona, Spain
| | - Marlon Osorio
- Research Group on New Materials (GINUMA), Faculty of Engineering, Universidad Pontificia Bolivariana, Circular 1 No. 70-01, Medellín 050031, Colombia
| | - Cristina Castro-Herazo
- Research Group on New Materials (GINUMA), Faculty of Engineering, Universidad Pontificia Bolivariana, Circular 1 No. 70-01, Medellín 050031, Colombia
| | - David Arboleda-Toro
- Group of Biosocial Studies of the Body-EBSC-, Faculty of Dentistry, Universidad de Antioquia Calle 64 No. 52-59, Medellín 050010, Colombia
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Villarreal-Rueda J, Zapata-Benabithe Z, Posada L, Martínez E, Herrera S, López S, Sobrido ABJ, Castro CI. Bacterial Nanocellulose from Komagataeibacter Medellinensis in Fique Juice for Activated Carbons Production and Its Application for Supercapacitor Electrodes. Polymers (Basel) 2023; 15:polym15071760. [PMID: 37050374 PMCID: PMC10096803 DOI: 10.3390/polym15071760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 03/27/2023] [Accepted: 03/28/2023] [Indexed: 04/05/2023] Open
Abstract
This paper presents the results obtained from the chemical activation of bacterial nanocellulose (BCN) using fique juice as a culture medium. BNC activation (BNCA) was carried out with H3PO4 and KOH at activation temperatures between 500 °C to 800 °C. The materials obtained were characterized morphologically, physicochemically, superficially, and electrochemically, using scanning electron microscopy, X-ray photoelectron spectroscopy (XPS), the physisorption of gases N2 and CO2 at 77 K and 273 K, respectively, cyclic voltammetry, chronopotentiometry, and electrochemical impedance spectroscopy (EIS). The samples activated with H3PO4 presented specific surface areas (SBET) around 780 m2 g−1, while those activated with KOH values presented specific surface areas between 680 and 893 m2 g−1. The XPS analysis showed that the PXPS percentage on the surface after H3PO4 activation was 11 wt%. The energy storage capacitance values ranged between 97.5 F g−1 and 220 F g−1 by EIS in 1 M H2SO4. The samples with the best electrochemical performance were activated with KOH at 700 °C and 800 °C, mainly due to the high SBET available and the accessibility of the microporosity. The capacitance of BNCAs was mainly improved by electrostatic effects due to the SBET rather than that of pseudocapacitive ones due to the presence of phosphorus heteroatoms.
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Affiliation(s)
- Juliana Villarreal-Rueda
- Semillero de Termofluidos y Conversión de la Energía, Ingeniería Química, Escuela de Ingenierías, Universidad Pontificia Bolivariana, Medellín 050031, Colombia
| | - Zulamita Zapata-Benabithe
- Grupo de Energía y Termodinámica, Ingeniería Química, Escuela de Ingenierías, Universidad Pontificia Bolivariana, Medellín 050031, Colombia
| | - Laia Posada
- Grupo de Investigación sobre Nuevos Materiales, Ingeniería en Nanotecnología, Escuela de Ingenierías, Universidad Pontificia Bolivariana, Medellín 050031, Colombia
| | - Estefanía Martínez
- Grupo de Investigación sobre Nuevos Materiales, Ingeniería en Nanotecnología, Escuela de Ingenierías, Universidad Pontificia Bolivariana, Medellín 050031, Colombia
| | - Sara Herrera
- Grupo de Investigación sobre Nuevos Materiales, Ingeniería en Nanotecnología, Escuela de Ingenierías, Universidad Pontificia Bolivariana, Medellín 050031, Colombia
| | - Stiven López
- Grupo de Investigación sobre Nuevos Materiales, Ingeniería en Nanotecnología, Escuela de Ingenierías, Universidad Pontificia Bolivariana, Medellín 050031, Colombia
| | - Ana B. J. Sobrido
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UK
| | - Cristina I. Castro
- Grupo de Investigación sobre Nuevos Materiales, Ingeniería en Nanotecnología, Escuela de Ingenierías, Universidad Pontificia Bolivariana, Medellín 050031, Colombia
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5
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Rocha ARFDS, Venturim BC, Ellwanger ERA, Pagnan CS, Silveira WBD, Martin JGP. Bacterial cellulose: Strategies for its production in the context of bioeconomy. J Basic Microbiol 2023; 63:257-275. [PMID: 36336640 DOI: 10.1002/jobm.202200280] [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: 05/12/2022] [Revised: 09/14/2022] [Accepted: 10/22/2022] [Indexed: 11/09/2022]
Abstract
Bacterial cellulose has advantages over plant-derived cellulose, which make its use for industrial applications easier and more profitable. Its intrinsic properties have been stimulating the global biopolymer market, with strong growth expectations in the coming years. Several bacterial species are capable of producing bacterial cellulose under different culture conditions; in this context, strategies aimed at metabolic engineering and several possibilities of carbon sources have provided opportunities for the bacterial cellulose's biotechnological exploration. In this article, an overview of biosynthesis pathways in different carbon sources for the main producing microorganisms, metabolic flux under different growth conditions, and their influence on the structural and functional characteristics of bacterial cellulose is provided. In addition, the main industrial applications and ways to reduce costs and optimize its production using alternative sources are discussed, contributing to new insights on the exploitation of this biomaterial in the context of the bioeconomy.
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Affiliation(s)
- André R F da Silva Rocha
- Microbiology of Fermented Products Laboratory (FERMICRO), Department of Microbiology, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Bárbara Côgo Venturim
- Microbiology of Fermented Products Laboratory (FERMICRO), Department of Microbiology, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Elena R A Ellwanger
- Graduate Program in Design (PPGD), Universidade do Estado de Minas Gerais (UEMG), Belo Horizonte, Brazil
| | - Caroline S Pagnan
- Graduate Program in Design (PPGD), Universidade do Estado de Minas Gerais (UEMG), Belo Horizonte, Brazil
| | - Wendel B da Silveira
- Physiology of Microorganisms Laboratory (LabFis), Department of Microbiology, Universidade Federal de Viçosa, Viçosa, Brazil
| | - José Guilherme P Martin
- Microbiology of Fermented Products Laboratory (FERMICRO), Department of Microbiology, Universidade Federal de Viçosa, Viçosa, Brazil
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6
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Bacterial nanocellulose production using Cantaloupe juice, statistical optimization and characterization. Sci Rep 2023; 13:51. [PMID: 36593253 PMCID: PMC9807561 DOI: 10.1038/s41598-022-26642-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 12/19/2022] [Indexed: 01/03/2023] Open
Abstract
The bacterial nanocellulose has been used in a wide range of biomedical applications including carriers for drug delivery, blood vessels, artificial skin and wound dressing. The total of ten morphologically different bacterial strains were screened for their potential to produce bacterial nanocellulose (BNC). Among these isolates, Bacillus sp. strain SEE-3 exhibited potent ability to produce the bacterial nanocellulose. The crystallinity, particle size and morphology of the purified biosynthesized nanocellulose were characterized. The cellulose nanofibers possess a negatively charged surface of - 14.7 mV. The SEM images of the bacterial nanocellulose confirms the formation of fiber-shaped particles with diameters of 20.12‒47.36 nm. The TEM images show needle-shaped particles with diameters of 30‒40 nm and lengths of 560‒1400 nm. X-ray diffraction show that the obtained bacterial nanocellulose has crystallinity degree value of 79.58%. FTIR spectra revealed the characteristic bands of the cellulose crystalline structure. The thermogravimetric analysis revealed high thermal stability. Optimization of the bacterial nanocellulose production was achieved using Plackett-Burman and face centered central composite designs. Using the desirability function, the optimum conditions for maximum bacterial nanocellulose production was determined theoretically and verified experimentally. Maximum BNC production (20.31 g/L) by Bacillus sp. strain SEE-3 was obtained using medium volume; 100 mL/250 mL conical flask, inoculum size; 5%, v/v, citric acid; 1.5 g/L, yeast extract; 5 g/L, temperature; 37 °C, Na2HPO4; 3 g/L, an initial pH level of 5, Cantaloupe juice concentration of 81.27 percent and peptone 11.22 g/L.
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7
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Campano C, Rivero-Buceta V, Fabra MJ, Prieto MA. Gaining control of bacterial cellulose colonization by polyhydroxyalkanoate-producing microorganisms to develop bioplasticized ultrathin films. Int J Biol Macromol 2022; 223:1495-1505. [PMID: 36395938 DOI: 10.1016/j.ijbiomac.2022.11.120] [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: 10/28/2022] [Revised: 11/09/2022] [Accepted: 11/12/2022] [Indexed: 11/16/2022]
Abstract
Synergistic methodological strategies based on the fields of microbial biotechnology and materials science open up an enormous range of possibilities for the sustainable production of advanced materials with predictable properties. This study shows how naturally produced polyhydroxyalkanoate (PHA) particles are introduced into bacterial cellulose (BC) driven by their bacterial producers. Thanks to an extensive knowledge of the internal structure of BC, it was possible to control the colonization process, i.e. loading and localization of PHA. A subsequent acid treatment favored the PHA-BC bonding at the position reached by the bacteria. These biodegradable films showed improved mechanical and barrier properties even with respect to reference plastic films 8 times thicker, reaching a Young's modulus 4.25 times higher and an oxygen permeability 3 times lower than those of polyethylene terephthalate (PET) films. Owing to the versatility of the method, a wide variety of materials can be developed for very diverse fields of application.
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Affiliation(s)
- Cristina Campano
- Polymer Biotechnology Group, Biological Research Centre Margarita Salas, Spanish National Research Council (CIB-CSIC), Madrid, Spain.
| | - Virginia Rivero-Buceta
- Polymer Biotechnology Group, Biological Research Centre Margarita Salas, Spanish National Research Council (CIB-CSIC), Madrid, Spain
| | - María José Fabra
- Food Safety and Preservation Department, Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia, Spain
| | - M Auxiliadora Prieto
- Polymer Biotechnology Group, Biological Research Centre Margarita Salas, Spanish National Research Council (CIB-CSIC), Madrid, Spain.
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El-Naggar NEA, El-Malkey SE, Abu-Saied MA, Mohammed ABA. Exploration of a novel and efficient source for production of bacterial nanocellulose, bioprocess optimization and characterization. Sci Rep 2022; 12:18533. [PMID: 36323728 PMCID: PMC9630512 DOI: 10.1038/s41598-022-22240-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 10/12/2022] [Indexed: 11/06/2022] Open
Abstract
The demand for bacterial nanocellulose is expected to rise in the coming years due to its wide usability in many applications. Hence, there is a continuing need to screen soil samples from various sources to isolate a strain with a high capacity for bacterial nanocellulose production. Bacillus sp. strain SEE-12, which was isolated from a soil sample collected from Barhiem, Menoufia governorate, Egypt, displayed high BNC production under submerged fermentation. Bacillus sp. strain SEE-12 was identified as Bacillus tequilensis strain SEE-12. In static cultures, BNC was obtained as a layer grown in the air liquid interface of the fermentation medium. The response surface methodology was used to optimise the process parameters. The highest BNC production (22.8 g/L) was obtained using 5 g/L peptone, 5 g/L yeast extract, 50%, v/v Cantaloupe juice, 5 g/L Na2HPO4, 1.5 g/L citric acid, pH 5, medium volume of 100 mL/250 mL conical flask, inoculum size 5%, v/v, temperature 37 °C and incubation time 6 days. The BNC was purified and characterized by scanning electron microscopy (SEM), Energy-dispersive X-ray (EDX) spectroscopy, differential scanning calorimetry (DSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and transmission electron microscopy (TEM).
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Affiliation(s)
- Noura El-Ahmady El-Naggar
- grid.420020.40000 0004 0483 2576Department of Bioprocess Development, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg El- Arab City, Alexandria, 21934 Egypt
| | - Sahar E. El-Malkey
- grid.449877.10000 0004 4652 351XMicrobial Biotechnology Department, Genetic Engineering and Biotechnology, Research Institute, University of Sadat City, Sadat City, Egypt
| | - M. A. Abu-Saied
- grid.420020.40000 0004 0483 2576Polymeric Materials Research Department, Advanced Technology and New Materials Research Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria, 21934 Egypt
| | - A. B. Abeer Mohammed
- grid.449877.10000 0004 4652 351XMicrobial Biotechnology Department, Genetic Engineering and Biotechnology, Research Institute, University of Sadat City, Sadat City, Egypt
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Evaluation of the Effects of Genistein In Vitro as a Chemopreventive Agent for Colorectal Cancer—Strategy to Improve Its Efficiency When Administered Orally. Molecules 2022; 27:molecules27207042. [PMID: 36296636 PMCID: PMC9612062 DOI: 10.3390/molecules27207042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/07/2022] [Accepted: 10/14/2022] [Indexed: 11/17/2022] Open
Abstract
Colorectal Cancer (CRC) ranks third in terms of incidence and second in terms of mortality and prevalence worldwide. In relation to chemotherapy treatment, the most used drug is 5-fluorouracil (5-FU); however, the use of this drug generates various toxic effects at the systemic level. For this reason, new therapeutic strategies are currently being sought that can be used as neoadjuvant or adjuvant treatments. Recent research has shown that natural compounds, such as genistein, have chemotherapeutic and anticancer effects, but the mechanisms of action of genistein and its molecular targets in human colon cells have not been fully elucidated. The results reported in relation to non-malignant cell lines are also unclear, which does not allow evidence of the selectivity that this compound may have. Therefore, in this work, genistein was evaluated in vitro in both cancer cell lines SW480 and SW620 and in the non-malignant cell line HaCaT. The results obtained show that genistein has selectivity for the SW480 and SW620 cell lines. In addition, it inhibits cell viability and has an antiproliferative effect in a dose-dependent manner. Increased production of reactive oxygen species (ROS) was also found, suggesting an association with the cell death process through various mechanisms. Finally, the encapsulation strategy that was proposed made it possible to demonstrate that bacterial nanocellulose (BNC) is capable of protecting genistein from the acidic conditions of gastric fluid and also allows the release of the compound in the colonic fluid. This would allow genistein to act locally in the mucosa of the colon where the first stages of CRC occur.
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10
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Recent advances in Kombucha tea: Microbial consortium, chemical parameters, health implications and biocellulose production. Int J Food Microbiol 2022; 377:109783. [PMID: 35728418 DOI: 10.1016/j.ijfoodmicro.2022.109783] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 05/17/2022] [Accepted: 06/05/2022] [Indexed: 01/10/2023]
Abstract
In the present review the latest research studies on Kombucha tea are summarized. Special attention has been paid on microbial population, chemical parameters, biocellulose production, and mainly, on the latest evidences of the biological activities of Kombucha tea. Kombucha tea is a fermented sweetened black or green tea which is obtained from a fermentative process driven by a symbiotic culture of yeast, acetic acid bacteria and lactic acid bacteria. In the last years, its consumption has increasingly grown due to its multiple and potential benefits on human health. This fact has motivated a significant increase in the number of research studies that are focused on the biological activities of this beverage. In this context, this review gathers the main studies that have analyzed the different properties of Kombucha tea (as antioxidant, antimicrobial, antidiabetic, antitumoral, anti-inflammatory, antihypertensive, hepatoprotective, hypocholesterolemic, and probiotic activities). It is highlighted that nowadays few human-based evidences are available to prove the beneficial effect of Kombucha tea on humans' health. In conclusion, further work on Kombucha tea is needed since nowadays few information is available on both clinical studies and the characterization of bioactive compounds and their properties.
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Ajdary R, Abidnejad R, Lehtonen J, Kuula J, Raussi-Lehto E, Kankuri E, Tardy B, Rojas OJ. Bacterial nanocellulose enables auxetic supporting implants. Carbohydr Polym 2022; 284:119198. [DOI: 10.1016/j.carbpol.2022.119198] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 01/26/2022] [Accepted: 01/27/2022] [Indexed: 01/08/2023]
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12
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Brandão PR, Crespo MTB, Nascimento FX. Phylogenomic and comparative analyses support the reclassification of several Komagataeibacter species as novel members of the Novacetimonas gen. nov. and bring new insights into the evolution of cellulose synthase genes. Int J Syst Evol Microbiol 2022; 72. [PMID: 35175916 DOI: 10.1099/ijsem.0.005252] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The genus Komagataeibacter harbours bacteria presenting the ability to produce increased levels of crystalline nanocellulose, as well as strains used in the industrial production of fermented products and beverages. Still, most of the studies of this biotechnologically relevant genus were conducted based on limited phenotypic methodologies and taxonomical classifications. In this work, a detailed analysis of the currently described genus Komagataeibacter was conducted based on phylogenomic analysis, unveiling the phylogenomic relationships within the genus and allowing a detailed phylogenetic analysis of biotechnologically important genes such as those involved in cellulose biosynthesis (bcs genes). Phylogenomic and comparative genomic analysis revealed that several type strains formed an independent genomic group from those of other Komagataeibacter, prompting their reclassification as members of a novel genus, hereby termed Novacetimonas gen. nov. The results support the reclassification of Komagataeibacter hansenii, Komagataeibacter cocois, Komagataeibacter maltaceti and Komagataeibacter pomaceti as novel members of the genus Novacetimonas. The Novacetimonas hansenii species is the proposed representative of the novel genus. Importantly, phylogenetic analysis based on cellulose biosynthesis genes (bcsABCD, bcsAB2XYC2, bcsAB3C3, bcsAB4), showed that the evolutionary history of these genes is closely related to the strain's phylogenomic/taxonomic classification. Hence, the robust taxonomic classification of these bacteria will allow the better characterization and selection of strains for biotechnological applications.
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Affiliation(s)
- Pedro R Brandão
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal
| | - Maria T B Crespo
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal.,Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157, Oeiras, Portugal
| | - Francisco X Nascimento
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal
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Diaz-Ramirez J, Urbina L, Eceiza A, Retegi A, Gabilondo N. Superabsorbent bacterial cellulose spheres biosynthesized from winery by-products as natural carriers for fertilizers. Int J Biol Macromol 2021; 191:1212-1220. [PMID: 34624377 DOI: 10.1016/j.ijbiomac.2021.09.203] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 09/29/2021] [Accepted: 09/29/2021] [Indexed: 11/30/2022]
Abstract
Soil contamination, sustainable management of water resources and controlled release of agrochemicals are the main challenges of modern agriculture. In this work, the synthesis of sphere-like bacterial cellulose (BC) using agitated culture conditions and Komagateibacter medellinensis bacterial strain ID13488 was optimized and characterized from grape pomace (GP). First, a comparative study was carried out between agitated and static cultures using different nitrogen sources and applying alternative GP treatments. Agitation of the cultures resulted in higher BC production yield compared to static culture conditions. Additionally, Water holding capacity (WHC) assays evidenced the superabsorbent nature of the BC biopolymer, being positively influenced by the spherical shape as it was observed an increase of 60% in contrast to the results obtained for the BC membranes under static culture conditions. Moreover, it was found that sphere-like BCs were capable of retaining urea up to 375% of their dry weight, rapidly releasing the fertilizer in the presence of water. According to our findings, sphere-like BCs represent suitable systems with great potential for actual agricultural hazards and grape pomace valorisation.
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Affiliation(s)
- Julen Diaz-Ramirez
- 'Materials+Technologies' Group, Engineering School of Gipuzkoa, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Pza. Europa 1, 20018, Donostia, San Sebastián, Spain.
| | - Leire Urbina
- 'Materials+Technologies' Group, Engineering School of Gipuzkoa, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Pza. Europa 1, 20018, Donostia, San Sebastián, Spain.
| | - Arantxa Eceiza
- 'Materials+Technologies' Group, Engineering School of Gipuzkoa, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Pza. Europa 1, 20018, Donostia, San Sebastián, Spain.
| | - Aloña Retegi
- 'Materials+Technologies' Group, Engineering School of Gipuzkoa, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Pza. Europa 1, 20018, Donostia, San Sebastián, Spain.
| | - Nagore Gabilondo
- 'Materials+Technologies' Group, Engineering School of Gipuzkoa, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Pza. Europa 1, 20018, Donostia, San Sebastián, Spain.
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14
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Saddique A, Cheong IW. Recent advances in three-dimensional bioprinted nanocellulose-based hydrogel scaffolds for biomedical applications. KOREAN J CHEM ENG 2021. [DOI: 10.1007/s11814-021-0926-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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15
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Hormaiztegui MEV, Marin D, Gañán P, Stefani PM, Mucci V, Aranguren MI. Nanocelluloses Reinforced Bio-Waterborne Polyurethane. Polymers (Basel) 2021; 13:polym13172853. [PMID: 34502892 PMCID: PMC8434354 DOI: 10.3390/polym13172853] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/19/2021] [Accepted: 08/21/2021] [Indexed: 11/16/2022] Open
Abstract
The aim of this work was to evaluate the influence of two kinds of bio- nano-reinforcements, cellulose nanocrystals (CNCs) and bacterial cellulose (BC), on the properties of castor oil-based waterborne polyurethane (WBPU) films. CNCs were obtained by the acidolysis of microcrystalline cellulose, while BC was produced from Komagataeibacter medellinensis. A WBPU/BC composite was prepared by the impregnation of a wet BC membrane and further drying, while the WBPU/CNC composite was obtained by casting. The nanoreinforcement was adequately dispersed in the polymer using any of the preparation methods, obtaining optically transparent compounds. Thermal gravimetric analysis, Fourier-transform infrared spectroscopy, field emission scanning electron microscopy, dynamical mechanical analysis, differential scanning calorimetry, contact angle, and water absorption tests were carried out to analyze the chemical, physical, and thermal properties, as well as the morphology of nanocelluloses and composites. The incorporation of nanoreinforcements into the formulation increased the storage modulus above the glass transition temperature of the polymer. The thermal stability of the BC-reinforced composites was slightly higher than that of the CNC composites. In addition, BC allowed maintaining the structural integrity of the composites films, when they were immersed in water. The results were related to the relatively high thermal stability and the particular three-dimensional interconnected reticular morphology of BC.
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Affiliation(s)
- M. E. Victoria Hormaiztegui
- Facultad de Ingeniería, Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), UNMDP, CONICET, Av. Juan B Justo 4302, Mar del Plata 7600, Argentina; (M.E.V.H.); (D.M.); (P.M.S.); (V.M.)
- Centro de Investigación y Desarrollo en Ciencia y Tecnología de Materiales (CITEMA), Facultad Regional La Plata, Universidad Tecnológica Nacional (UTN)-Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CIC), Av. 60 y 124, Berisso 1923, Argentina
| | - Diana Marin
- Facultad de Ingeniería, Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), UNMDP, CONICET, Av. Juan B Justo 4302, Mar del Plata 7600, Argentina; (M.E.V.H.); (D.M.); (P.M.S.); (V.M.)
| | - Piedad Gañán
- Facultad de Ingeniería Química, Universidad Pontificia Bolivariana (UPB), Circular 1, No 70-01, Medellín 050031, Colombia;
| | - Pablo Marcelo Stefani
- Facultad de Ingeniería, Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), UNMDP, CONICET, Av. Juan B Justo 4302, Mar del Plata 7600, Argentina; (M.E.V.H.); (D.M.); (P.M.S.); (V.M.)
| | - Verónica Mucci
- Facultad de Ingeniería, Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), UNMDP, CONICET, Av. Juan B Justo 4302, Mar del Plata 7600, Argentina; (M.E.V.H.); (D.M.); (P.M.S.); (V.M.)
| | - Mirta I. Aranguren
- Facultad de Ingeniería, Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), UNMDP, CONICET, Av. Juan B Justo 4302, Mar del Plata 7600, Argentina; (M.E.V.H.); (D.M.); (P.M.S.); (V.M.)
- Correspondence:
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16
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Blanco FG, Hernández N, Rivero-Buceta V, Maestro B, Sanz JM, Mato A, Hernández-Arriaga AM, Prieto MA. From Residues to Added-Value Bacterial Biopolymers as Nanomaterials for Biomedical Applications. NANOMATERIALS 2021; 11:nano11061492. [PMID: 34200068 PMCID: PMC8228158 DOI: 10.3390/nano11061492] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 05/20/2021] [Accepted: 05/26/2021] [Indexed: 12/16/2022]
Abstract
Bacterial biopolymers are naturally occurring materials comprising a wide range of molecules with diverse chemical structures that can be produced from renewable sources following the principles of the circular economy. Over the last decades, they have gained substantial interest in the biomedical field as drug nanocarriers, implantable material coatings, and tissue-regeneration scaffolds or membranes due to their inherent biocompatibility, biodegradability into nonhazardous disintegration products, and their mechanical properties, which are similar to those of human tissues. The present review focuses upon three technologically advanced bacterial biopolymers, namely, bacterial cellulose (BC), polyhydroxyalkanoates (PHA), and γ-polyglutamic acid (PGA), as models of different carbon-backbone structures (polysaccharides, polyesters, and polyamides) produced by bacteria that are suitable for biomedical applications in nanoscale systems. This selection models evidence of the wide versatility of microorganisms to generate biopolymers by diverse metabolic strategies. We highlight the suitability for applied sustainable bioprocesses for the production of BC, PHA, and PGA based on renewable carbon sources and the singularity of each process driven by bacterial machinery. The inherent properties of each polymer can be fine-tuned by means of chemical and biotechnological approaches, such as metabolic engineering and peptide functionalization, to further expand their structural diversity and their applicability as nanomaterials in biomedicine.
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Affiliation(s)
- Francisco G. Blanco
- Interdisciplinary Platform for Sustainable Plastics towards a Circular Economy-Spanish National Research Council (SusPlast-CSIC), 28040 Madrid, Spain; (F.G.B.); (N.H.); (V.R.-B.); (A.M.); (A.M.H.-A.)
- Polymer Biotechnology Group, Microbial and Plant Biotechnology Department, Biological Research Centre Margarita Salas, CIB-CSIC, 28040 Madrid, Spain
| | - Natalia Hernández
- Interdisciplinary Platform for Sustainable Plastics towards a Circular Economy-Spanish National Research Council (SusPlast-CSIC), 28040 Madrid, Spain; (F.G.B.); (N.H.); (V.R.-B.); (A.M.); (A.M.H.-A.)
- Polymer Biotechnology Group, Microbial and Plant Biotechnology Department, Biological Research Centre Margarita Salas, CIB-CSIC, 28040 Madrid, Spain
| | - Virginia Rivero-Buceta
- Interdisciplinary Platform for Sustainable Plastics towards a Circular Economy-Spanish National Research Council (SusPlast-CSIC), 28040 Madrid, Spain; (F.G.B.); (N.H.); (V.R.-B.); (A.M.); (A.M.H.-A.)
- Polymer Biotechnology Group, Microbial and Plant Biotechnology Department, Biological Research Centre Margarita Salas, CIB-CSIC, 28040 Madrid, Spain
| | - Beatriz Maestro
- Host-Parasite Interplay in Pneumococcal Infection Group, Microbial and Plant Biotechnology Department, Biological Research Centre Margarita Salas, CIB-CSIC, 28040 Madrid, Spain; (B.M.); (J.M.S.)
| | - Jesús M. Sanz
- Host-Parasite Interplay in Pneumococcal Infection Group, Microbial and Plant Biotechnology Department, Biological Research Centre Margarita Salas, CIB-CSIC, 28040 Madrid, Spain; (B.M.); (J.M.S.)
| | - Aránzazu Mato
- Interdisciplinary Platform for Sustainable Plastics towards a Circular Economy-Spanish National Research Council (SusPlast-CSIC), 28040 Madrid, Spain; (F.G.B.); (N.H.); (V.R.-B.); (A.M.); (A.M.H.-A.)
- Polymer Biotechnology Group, Microbial and Plant Biotechnology Department, Biological Research Centre Margarita Salas, CIB-CSIC, 28040 Madrid, Spain
| | - Ana M. Hernández-Arriaga
- Interdisciplinary Platform for Sustainable Plastics towards a Circular Economy-Spanish National Research Council (SusPlast-CSIC), 28040 Madrid, Spain; (F.G.B.); (N.H.); (V.R.-B.); (A.M.); (A.M.H.-A.)
- Polymer Biotechnology Group, Microbial and Plant Biotechnology Department, Biological Research Centre Margarita Salas, CIB-CSIC, 28040 Madrid, Spain
| | - M. Auxiliadora Prieto
- Interdisciplinary Platform for Sustainable Plastics towards a Circular Economy-Spanish National Research Council (SusPlast-CSIC), 28040 Madrid, Spain; (F.G.B.); (N.H.); (V.R.-B.); (A.M.); (A.M.H.-A.)
- Polymer Biotechnology Group, Microbial and Plant Biotechnology Department, Biological Research Centre Margarita Salas, CIB-CSIC, 28040 Madrid, Spain
- Correspondence:
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17
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Acetan and Acetan-Like Polysaccharides: Genetics, Biosynthesis, Structure, and Viscoelasticity. Polymers (Basel) 2021; 13:polym13050815. [PMID: 33799945 PMCID: PMC7961339 DOI: 10.3390/polym13050815] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 03/01/2021] [Accepted: 03/02/2021] [Indexed: 02/07/2023] Open
Abstract
Bacteria produce a variety of multifunctional polysaccharides, including structural, intracellular, and extracellular polysaccharides. They are attractive for the industrial sector due to their natural origin, sustainability, biodegradability, low toxicity, stability, unique viscoelastic properties, stable cost, and supply. When incorporated into different matrices, they may control emulsification, stabilization, crystallization, water release, and encapsulation. Acetan is an important extracellular water-soluble polysaccharide produced mainly by bacterial species of the genera Komagataeibacter and Acetobacter. Since its original description in Komagataeibacter xylinus, acetan-like polysaccharides have also been described in other species of acetic acid bacteria. Our knowledge on chemical composition of different acetan-like polysaccharides, their viscoelasticity, and the genetic basis for their production has expanded during the last years. Here, we review data on acetan biosynthesis, its molecular structure, genetic organization, and mechanical properties. In addition, we have performed an extended bioinformatic analysis on acetan-like polysaccharide genetic clusters in the genomes of Komagataeibacter and Acetobacter species. The analysis revealed for the first time a second acetan-like polysaccharide genetic cluster, that is widespread in both genera. All species of the Komagataeibacter possess at least one acetan genetic cluster, while it is present in only one third of the Acetobacter species surveyed.
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18
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Qiu X, Zhang Y, Hong H. Classification of acetic acid bacteria and their acid resistant mechanism. AMB Express 2021; 11:29. [PMID: 33595734 PMCID: PMC7889782 DOI: 10.1186/s13568-021-01189-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 02/04/2021] [Indexed: 12/14/2022] Open
Abstract
Acetic acid bacteria (AAB) are obligate aerobic Gram-negative bacteria that are commonly used in vinegar fermentation because of their strong capacity for ethanol oxidation and acetic acid synthesis as well as their acid resistance. However, low biomass and low production rate due to acid stress are still major challenges that must be overcome in industrial processes. Although acid resistance in AAB is important to the production of high acidity vinegar, the acid resistance mechanisms of AAB have yet to be fully elucidated. In this study, we discuss the classification of AAB species and their metabolic processes and review potential acid resistance factors and acid resistance mechanisms in various strains. In addition, we analyze the quorum sensing systems of Komagataeibacter and Gluconacetobacter to provide new ideas for investigation of acid resistance mechanisms in AAB in the form of signaling pathways. The results presented herein will serve as an important reference for selective breeding of high acid resistance AAB and optimization of acetic acid fermentation processes.
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Affiliation(s)
- Xiaoman Qiu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu Road, Nanjing, 211800, China
- National Engineering Technique Research Center for Biotechnology, Nanjing Tech University, No. 30, Puzhu Road, Nanjing, 211800, China
| | - Yao Zhang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu Road, Nanjing, 211800, China
- National Engineering Technique Research Center for Biotechnology, Nanjing Tech University, No. 30, Puzhu Road, Nanjing, 211800, China
| | - Housheng Hong
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu Road, Nanjing, 211800, China.
- National Engineering Technique Research Center for Biotechnology, Nanjing Tech University, No. 30, Puzhu Road, Nanjing, 211800, China.
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19
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Budtova T, Aguilera DA, Beluns S, Berglund L, Chartier C, Espinosa E, Gaidukovs S, Klimek-Kopyra A, Kmita A, Lachowicz D, Liebner F, Platnieks O, Rodríguez A, Tinoco Navarro LK, Zou F, Buwalda SJ. Biorefinery Approach for Aerogels. Polymers (Basel) 2020; 12:E2779. [PMID: 33255498 PMCID: PMC7760295 DOI: 10.3390/polym12122779] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/20/2020] [Accepted: 11/21/2020] [Indexed: 12/30/2022] Open
Abstract
According to the International Energy Agency, biorefinery is "the sustainable processing of biomass into a spectrum of marketable bio-based products (chemicals, materials) and bioenergy (fuels, power, heat)". In this review, we survey how the biorefinery approach can be applied to highly porous and nanostructured materials, namely aerogels. Historically, aerogels were first developed using inorganic matter. Subsequently, synthetic polymers were also employed. At the beginning of the 21st century, new aerogels were created based on biomass. Which sources of biomass can be used to make aerogels and how? This review answers these questions, paying special attention to bio-aerogels' environmental and biomedical applications. The article is a result of fruitful exchanges in the frame of the European project COST Action "CA 18125 AERoGELS: Advanced Engineering and Research of aeroGels for Environment and Life Sciences".
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Affiliation(s)
- Tatiana Budtova
- MINES ParisTech, Center for Materials Forming (CEMEF), PSL Research University, UMR CNRS 7635, CS 10207, 06904 Sophia Antipolis, France; (D.A.A.); (C.C.); (F.Z.)
| | - Daniel Antonio Aguilera
- MINES ParisTech, Center for Materials Forming (CEMEF), PSL Research University, UMR CNRS 7635, CS 10207, 06904 Sophia Antipolis, France; (D.A.A.); (C.C.); (F.Z.)
| | - Sergejs Beluns
- Faculty of Materials Science and Applied Chemistry, Institute of Polymer Materials, Riga Technical University, P.Valdena 3/7, LV, 1048 Riga, Latvia; (S.B.); (S.G.); (O.P.)
| | - Linn Berglund
- Division of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, SE-971 87 Luleå, Sweden;
| | - Coraline Chartier
- MINES ParisTech, Center for Materials Forming (CEMEF), PSL Research University, UMR CNRS 7635, CS 10207, 06904 Sophia Antipolis, France; (D.A.A.); (C.C.); (F.Z.)
| | - Eduardo Espinosa
- Bioagres Group, Chemical Engineering Department, Faculty of Science, Universidad de Córdoba, Campus of Rabanales, 14014 Córdoba, Spain; (E.E.); (A.R.)
| | - Sergejs Gaidukovs
- Faculty of Materials Science and Applied Chemistry, Institute of Polymer Materials, Riga Technical University, P.Valdena 3/7, LV, 1048 Riga, Latvia; (S.B.); (S.G.); (O.P.)
| | - Agnieszka Klimek-Kopyra
- Department of Agroecology and Plant Production, Faculty of Agriculture and Economics, University of Agriculture, Aleja Mickieiwcza 21, 31-120 Kraków, Poland;
| | - Angelika Kmita
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland; (A.K.); (D.L.)
| | - Dorota Lachowicz
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland; (A.K.); (D.L.)
| | - Falk Liebner
- Department of Chemistry, Institute for Chemistry of Renewable Resources, University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad Lorenz Straße 24, A-3430 Tulln an der Donau, Austria;
| | - Oskars Platnieks
- Faculty of Materials Science and Applied Chemistry, Institute of Polymer Materials, Riga Technical University, P.Valdena 3/7, LV, 1048 Riga, Latvia; (S.B.); (S.G.); (O.P.)
| | - Alejandro Rodríguez
- Bioagres Group, Chemical Engineering Department, Faculty of Science, Universidad de Córdoba, Campus of Rabanales, 14014 Córdoba, Spain; (E.E.); (A.R.)
| | - Lizeth Katherine Tinoco Navarro
- CEITEC-VUT Central European Institute of Technology—Brno university of Technology, Purkyňova 123, 612 00 Brno-Královo Pole, Czech Republic;
| | - Fangxin Zou
- MINES ParisTech, Center for Materials Forming (CEMEF), PSL Research University, UMR CNRS 7635, CS 10207, 06904 Sophia Antipolis, France; (D.A.A.); (C.C.); (F.Z.)
| | - Sytze J. Buwalda
- MINES ParisTech, Center for Materials Forming (CEMEF), PSL Research University, UMR CNRS 7635, CS 10207, 06904 Sophia Antipolis, France; (D.A.A.); (C.C.); (F.Z.)
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20
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A Novel Approach Using Conventional Methodologies to Scale up BNC Production Using Komagataeibacter medellinensis and Rotten Banana Waste as Alternative. Processes (Basel) 2020. [DOI: 10.3390/pr8111469] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Currently, cellulose nanostructures are among the most promising structures, and extensive work in materials and biotechnology industries is aimed at identifying an efficient process of production. Even when production at the laboratory scale is successful, crucial aspects of increased commercial applications for cellulose nanostructures are linked to large-scale production. Large-scale production requires a balance between the cost of the culture medium and product value. Therefore, in this work, for the optimization and scaling up of bacterial nanocellulose, a culture medium consisting of rotten banana unsuitable for human consumption was used for the first time as an inexpensive feedstock. Initially, the bacterial nanocellulose (BNC) culture medium conditions were optimized, and it was established that a glucose concentration of 26.4 g/L and a V/A ratio of 2.2 cm were the optimal conditions for production reaching a BNC yield of 5 g/L, which was 42.4% higher than the best result initially obtained. Finally, the scale-up process was performed, implementing a regime analysis methodology by comparing the characteristic times of the critical mechanisms involved in BNC production, namely, microbial growth, glucose consumption, BNC production, and glucose diffusion into the BNC membrane, as the first approach for this type of BNC production process. The mechanism underlying the BNC production process is glucose diffusion into the BNC membrane (characteristic time, 675.47 h). Thus, the V/A ratio was selected as the scale-up criterion most suitable for producing BNC under static culture conditions, allowing the production of 16 g of BNC after 12 d of fermentation in a plastic bioreactor, which was 3378% higher than that produced in glass vessels. The results obtained in this study may initiate further improvements in BNC commercial production by exploiting different feedstocks.
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21
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Urbina L, Eceiza A, Gabilondo N, Corcuera MÁ, Retegi A. Tailoring the in situ conformation of bacterial cellulose-graphene oxide spherical nanocarriers. Int J Biol Macromol 2020; 163:1249-1260. [PMID: 32673723 DOI: 10.1016/j.ijbiomac.2020.07.077] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 07/02/2020] [Accepted: 07/08/2020] [Indexed: 10/23/2022]
Abstract
Bacterial cellulose (BC)/graphene oxide (GO) sphere-like hydrogels have been biosynthesized by in situ route in dynamic cultivation. The GO concentration during BC biosynthesis (0.01 and 0.05 mg mL-1) was the determining factor for the conformation of the final hydrogels: encapsulation (BC/GO 0.01) or distribution through all the body of the spheres (BC/GO 0.05). The as-prepared sphere hydrogels were characterized in terms of physico-chemical properties, thermal stability, microstructure, and swelling capacity in different media. In addition, a chemical treatment with ascorbic acid was performed in order to obtain reduced graphene oxide (rGO) into the spheres (BC/rGO). After the chemical treatment, electrostatic force microscopy (EFM) revealed electrical interactions due to the presence of rGO inside the spheres and resistivity values in the range of semiconductive materials were obtained (106 Ω·cm), making BC/rGO spheres promising for the development of electro-stimulated systems. The in vitro release study of ibuprofen (IB), showed that the reduction process led to an increase of 73 and 92% of drug release with respect to BC/GO 0.05 and BC/GO 0.01 spheres, respectively. Moreover, the encapsulation conformation showed more homogeneous porous structure and thus, a cumulative drug release of 63% was reached after 6 h.
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Affiliation(s)
- Leire Urbina
- 'Materials + Technologies' Group, Engineering School of Gipuzkoa, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Pza. Europa 1, 20018 Donostia-San Sebastián, Spain.
| | - Arantxa Eceiza
- 'Materials + Technologies' Group, Engineering School of Gipuzkoa, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Pza. Europa 1, 20018 Donostia-San Sebastián, Spain.
| | - Nagore Gabilondo
- 'Materials + Technologies' Group, Engineering School of Gipuzkoa, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Pza. Europa 1, 20018 Donostia-San Sebastián, Spain.
| | - María Ángeles Corcuera
- 'Materials + Technologies' Group, Engineering School of Gipuzkoa, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Pza. Europa 1, 20018 Donostia-San Sebastián, Spain.
| | - Aloña Retegi
- 'Materials + Technologies' Group, Engineering School of Gipuzkoa, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Pza. Europa 1, 20018 Donostia-San Sebastián, Spain.
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22
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Marič L, Cleenwerck I, Accetto T, Vandamme P, Trček J. Description of Komagataeibacter melaceti sp. nov. and Komagataeibacter melomenusus sp. nov. Isolated from Apple Cider Vinegar. Microorganisms 2020; 8:E1178. [PMID: 32756518 PMCID: PMC7465234 DOI: 10.3390/microorganisms8081178] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/28/2020] [Accepted: 07/30/2020] [Indexed: 01/18/2023] Open
Abstract
Two novel strains AV382 and AV436 were isolated from a submerged industrial bioreactor for production of apple cider vinegar in Kopivnik (Slovenia). Both strains showed very high (≥98.2%) 16S rRNA gene sequence similarities with Komagataeibacter species, but lower 16S-23S rRNA gene internal transcribed spacer (ITS). The highest similarity of the 16S-23S rRNA gene ITS of AV382 was to Komagataeibacter kakiaceti LMG 26206T (91.6%), of AV436 to Komagataeibacter xylinus LMG 1515T (93.9%). The analysis of genome sequences confirmed that AV382 is the most closely related to K. kakiaceti (ANIb 88.2%) and AV436 to K. xylinus (ANIb 91.6%). Genome to genome distance calculations exhibit for both strains ≤47.3% similarity to all type strains of the genus Komagataeibacter. The strain AV382 can be differentiated from its closest relatives K. kakiaceti and Komagataeibacter saccharivorans by its ability to form 2-keto and 5-keto-D-gluconic acids from glucose, incapability to grow in the presence of 30% glucose, formation of C19:0 cyclo ω8c fatty acid and tolerance of up to 5% acetic acid in the presence of ethanol. The strain AV436 can be differentiated from its closest relatives K. xylinus, Komagataeibacter sucrofermentans, and Komagataeibacter nataicola by its ability to form 5-keto-D-gluconic acid, growth on 1-propanol, efficient synthesis of cellulose, and tolerance to up to 5% acetic acid in the presence ethanol. The major fatty acid of both strains is C18:1ω7c. Based on a combination of phenotypic, chemotaxonomic and phylogenetic features, the strains AV382T and AV436T represent novel species of the genus Komagataeibacter, for which the names Komagataeibactermelaceti sp. nov. and Komagataeibacter melomenusus are proposed, respectively. The type strain of Komagataeibacter melaceti is AV382T (= ZIM B1054T = LMG 31303T = CCM 8958T) and of Komagataeibacter melomenusus AV436T (= ZIM B1056T = LMG 31304T = CCM 8959T).
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Affiliation(s)
- Leon Marič
- Department of Biology, Faculty of Natural Sciences and Mathematics, University of Maribor, SI-2000 Maribor, Slovenia;
| | - Ilse Cleenwerck
- BCCM/LMG Bacteria Collection, Laboratory of Microbiology, Ghent University, Faculty of Sciences, B-9000 Ghent, Belgium; (I.C.); (P.V.)
| | - Tomaž Accetto
- Animal Science Department, Biotechnical Faculty, University of Ljubljana, SI-1230 Domžale, Slovenia;
| | - Peter Vandamme
- BCCM/LMG Bacteria Collection, Laboratory of Microbiology, Ghent University, Faculty of Sciences, B-9000 Ghent, Belgium; (I.C.); (P.V.)
| | - Janja Trček
- Department of Biology, Faculty of Natural Sciences and Mathematics, University of Maribor, SI-2000 Maribor, Slovenia;
- Faculty of Chemistry and Chemical Engineering, University of Maribor, SI-2000 Maribor, Slovenia
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23
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Towards control of cellulose biosynthesis by Komagataeibacter using systems-level and strain engineering strategies: current progress and perspectives. Appl Microbiol Biotechnol 2020; 104:6565-6585. [PMID: 32529377 PMCID: PMC7347698 DOI: 10.1007/s00253-020-10671-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 04/30/2020] [Accepted: 05/04/2020] [Indexed: 12/29/2022]
Abstract
The strains of the Komagataeibacter genus have been shown to be the most efficient bacterial nanocellulose producers. Although exploited for many decades, the studies of these species focused mainly on the optimisation of cellulose synthesis process through modification of culturing conditions in the industrially relevant settings. Molecular physiology of Komagataeibacter was poorly understood and only a few studies explored genetic engineering as a strategy for strain improvement. Only since recently the systemic information of the Komagataeibacter species has been accumulating in the form of omics datasets representing sequenced genomes, transcriptomes, proteomes and metabolomes. Genetic analyses of the mutants generated in the untargeted strain modification studies have drawn attention to other important proteins, beyond those of the core catalytic machinery of the cellulose synthase complex. Recently, modern molecular and synthetic biology tools have been developed which showed the potential for improving targeted strain engineering. Taking the advantage of the gathered knowledge should allow for better understanding of the genotype–phenotype relationship which is necessary for robust modelling of metabolism as well as selection and testing of new molecular engineering targets. In this review, we discuss the current progress in the area of Komagataeibacter systems biology and its impact on the research aimed at scaled-up cellulose synthesis as well as BNC functionalisation.Key points • The accumulated omics datasets advanced the systemic understanding of Komagataeibacter physiology at the molecular level. • Untargeted and targeted strain modification approaches have been applied to improve nanocellulose yield and properties. • The development of modern molecular and synthetic biology tools presents a potential for enhancing targeted strain engineering. • The accumulating omic information should improve modelling of Komagataeibacter’s metabolism as well as selection and testing of new molecular engineering targets. |
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He X, Meng H, Song H, Deng S, He T, Wang S, Wei D, Zhang Z. Novel bacterial cellulose membrane biosynthesized by a new and highly efficient producer Komagataeibacter rhaeticus TJPU03. Carbohydr Res 2020; 493:108030. [PMID: 32442702 DOI: 10.1016/j.carres.2020.108030] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 05/02/2020] [Accepted: 05/04/2020] [Indexed: 10/24/2022]
Abstract
Bacterial cellulose(BC) is a kind of extracellular polymer synthesized by bacteria and it has very wide applications in many fields. However, the application of BC in a large commercial scale can still not be fulfilled due to the low yield and demanding for BC membranes with very different properties. To this end, a new BC-producer Komagataeibacter rhaeticus TJPU03 was isolated from rotten orange peel, which produced 8.28 ± 0.27 g/L(dry weight) in standard HS medium at the 10th day. The membrane is easier to be purified by one-step alkaline treatment and the produced BC(K-BC) membranes possess homogeneous, looser and more porous three-dimensional network composed by thinner cellulose fibrils. However, the wet K-BC possesses stronger mechanical properties and exhibits lower toxicity and higher cytocompatibility to mammalian cell. Owing to the more porous and homogeneous network, K-BC possesses high loading capacity of cell and protein drugs. Also, it exhibits sustained-controlled release ability for proteinaceous drug. The high yield of this strain and the special characteristics of K-BC predict this strain to be a very promising BC-producer and broad applications of K-BC in the fields of wound healing, scaffolds of tissue engineering, tissue repair and regeneration.
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Affiliation(s)
- Xiaoling He
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin, 300387, China.
| | - Hongyan Meng
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin, 300387, China
| | - Haode Song
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin, 300387, China
| | - Shiyu Deng
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin, 300387, China
| | - Tingting He
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin, 300387, China
| | - Shuai Wang
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin, 300387, China
| | - Dongsheng Wei
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Science, Nankai University, Tianjin, 300071, China
| | - Zhijun Zhang
- National Engineering Technology Research Center for Preservation of Agricultural Products, Key Laboratory of Storage of Agricultural Products, Ministry of Agriculture and Rural Affairs, Tianjin Key Laboratory of Postharvest Physiology and Storage of Agricultural Products, Tianjin, 300384, China.
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25
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Molina-Ramírez C, Cañas-Gutiérrez A, Castro C, Zuluaga R, Gañán P. Effect of production process scale-up on the characteristics and properties of bacterial nanocellulose obtained from overripe Banana culture medium. Carbohydr Polym 2020; 240:116341. [PMID: 32475595 DOI: 10.1016/j.carbpol.2020.116341] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 04/15/2020] [Accepted: 04/17/2020] [Indexed: 11/26/2022]
Abstract
In this study, the effect of bioreactor size was evaluated with respect to the production and characteristics of the nanocellulose membranes produced by two different bioreactors: one with an 1800 cm2 cross-sectional area (BC-B44) and a lab-scale bioreactor with a 41 cm2 cross-sectional area (BC-B1). The culture conditions were kept the same, and the substrate consisted of overripe bananas, which are inexpensive because they are unsuitable for human consumption. The X-ray diffraction pattern showed that the two samples had similar crystalline structures, but changes were observed at the morphological level in the nanofibers that make up the BNC membranes. These changes generated, in turn, variations in the mechanical and thermal properties of the samples. This result represents a novel scale-up effect related to the static mode fermentation of BNC.
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Affiliation(s)
- Carlos Molina-Ramírez
- Facultad de Ingeniería Química, Universidad Pontificia Bolivariana, Circular 1 # 70-01, Medellín, Colombia
| | - Ana Cañas-Gutiérrez
- Facultad de Ingeniería Textil, Universidad Pontificia Bolivariana, Circular 1 # 70-01, Medellín, Colombia
| | - Cristina Castro
- Facultad de Ingeniería Textil, Universidad Pontificia Bolivariana, Circular 1 # 70-01, Medellín, Colombia
| | - Robin Zuluaga
- Facultad de Ingeniería Agroindustrial, Universidad Pontificia Bolivariana, Circular 1 # 70-01, Medellín, Colombia.
| | - Piedad Gañán
- Facultad de Ingeniería Química, Universidad Pontificia Bolivariana, Circular 1 # 70-01, Medellín, Colombia
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26
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Saleh AK, Soliman NA, Farrag AA, Ibrahim MM, El-Shinnawy NA, Abdel-Fattah YR. Statistical optimization and characterization of a biocellulose produced by local Egyptian isolate Komagataeibacter hansenii AS.5. Int J Biol Macromol 2019; 144:198-207. [PMID: 31843613 DOI: 10.1016/j.ijbiomac.2019.12.103] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 10/30/2019] [Accepted: 12/12/2019] [Indexed: 11/16/2022]
Abstract
Optimization of the culture parameters used for biocellulose (BC) production by a previously isolated bacterial strain (Komagataeibacter hansenii AS.5) was carried out. The effect of nine culture parameters on BC production was evaluated by implementing the Plackett-Burman design, and the results revealed that, the most significant variables affecting BC production were MgSO4, ethanol, pH and yeast extract. A three-level and four-factor Box-Behnken design was applied to determine the optimum level of each significant variable. According to the results of the Plackett-Burman (PBD) and Box-Behnken designs (BBD), the following medium composition and parameters were calculated to be optimum (g/l): glucose 25, yeast extract 13, MgSO4 0.15, KH2PO4 2, ethanol 7.18 ml/l, pH 5.5, inoclume size 7%, cultivation temperature 20 °C and incubation time 9 days. Characterization of purified BC was performed to determine the network morphology by scanning electron microscopy, crystallinity by X-ray diffraction, chemical structure and functional groups by Fourier-transform infrared spectroscopy, thermal stability by thermogravimetric analysis and mechanical properties such as Young's modulus, tensile strength and elongation at beak % of BC.
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Affiliation(s)
- Ahmed K Saleh
- Cellulose and Paper Department, National Research Centre, El-Tahrir St., Dokki, Giza, Egypt.
| | - Nadia A Soliman
- Bioprocess Development Department, Genetic Engineering and Biotechnology Research Institute, City for Scientific Research and Technological Applications, Alexandria, Egypt
| | - Ayman A Farrag
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Egypt
| | - Maha M Ibrahim
- Cellulose and Paper Department, National Research Centre, El-Tahrir St., Dokki, Giza, Egypt
| | - Nashwa A El-Shinnawy
- Zoology Department, Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo, Egypt
| | - Yasser R Abdel-Fattah
- Bioprocess Development Department, Genetic Engineering and Biotechnology Research Institute, City for Scientific Research and Technological Applications, Alexandria, Egypt
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27
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Microbial dynamics and flavor formation during the traditional brewing of Monascus vinegar. Food Res Int 2019; 125:108531. [DOI: 10.1016/j.foodres.2019.108531] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 04/29/2019] [Accepted: 07/01/2019] [Indexed: 01/14/2023]
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28
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Gorgieva S, Trček J. Bacterial Cellulose: Production, Modification and Perspectives in Biomedical Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1352. [PMID: 31547134 PMCID: PMC6835293 DOI: 10.3390/nano9101352] [Citation(s) in RCA: 184] [Impact Index Per Article: 36.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 09/08/2019] [Accepted: 09/16/2019] [Indexed: 01/09/2023]
Abstract
Bacterial cellulose (BC) is ultrafine, nanofibrillar material with an exclusive combination of properties such as high crystallinity (84%-89%) and polymerization degree, high surface area (high aspect ratio of fibers with diameter 20-100 nm), high flexibility and tensile strength (Young modulus of 15-18 GPa), high water-holding capacity (over 100 times of its own weight), etc. Due to high purity, i.e., absence of lignin and hemicellulose, BC is considered as a non-cytotoxic, non-genotoxic and highly biocompatible material, attracting interest in diverse areas with hallmarks in medicine. The presented review summarizes the microbial aspects of BC production (bacterial strains, carbon sources and media) and versatile in situ and ex situ methods applied in BC modification, especially towards bionic design for applications in regenerative medicine, from wound healing and artificial skin, blood vessels, coverings in nerve surgery, dura mater prosthesis, arterial stent coating, cartilage and bone repair implants, etc. The paper concludes with challenges and perspectives in light of further translation in highly valuable medical products.
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Affiliation(s)
- Selestina Gorgieva
- Faculty of Mechanical Engineering, Institute of Engineering Materials and Design, University of Maribor, 2000 Maribor, Slovenia.
- Faculty of Electrical Engineering and Computer Science, Institute of Automation, University of Maribor, 2000 Maribor, Slovenia.
| | - Janja Trček
- Faculty of Natural Sciences and Mathematics, Department of Biology, University of Maribor, 2000 Maribor, Slovenia.
- Faculty of Chemistry and Chemical Engineering, University of Maribor, 2000 Maribor, Slovenia.
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29
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Osorio M, Cañas A, Puerta J, Díaz L, Naranjo T, Ortiz I, Castro C. Ex Vivo and In Vivo Biocompatibility Assessment (Blood and Tissue) of Three-Dimensional Bacterial Nanocellulose Biomaterials for Soft Tissue Implants. Sci Rep 2019; 9:10553. [PMID: 31332259 PMCID: PMC6646330 DOI: 10.1038/s41598-019-46918-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 06/18/2019] [Indexed: 01/06/2023] Open
Abstract
Bacterial nanocellulose (BNC) is a promising biomedical material. However, the haemocompatibility (haemolysis and thrombogenicity) and acute and sub-chronic immune responses to three-dimensional (3D) BNC biomaterials have not been evaluated. Accordingly, this manuscript focused on the effect of 3D microporosity on BNC haemocompatibility and a comparison with 2D BNC architecture, followed by the evaluation of the immune response to 3D BNC. Blood ex vivo studies indicated that compared with other 2D and 3D BNC architectures, never-dried 2D BNC presented antihemolytic and antithrombogenic effects. Nevertheless, in vivo studies indicated that 3D BNC did not interfere with wound haemostasis and elicited a mild acute inflammatory response, not a foreign body or chronic inflammatory response. Moreover, compared with the polyethylene controls, the implant design with micropores ca. 60 µm in diameter showed a high level of collagen, neovascularization and low fibrosis. Cell/tissue infiltration increased to 91% after 12 weeks and was characterized by fibroblastic, capillary and extracellular matrix infiltration. Accordingly, 3D BNC biomaterials can be considered a potential implantable biomaterial for soft tissue augmentation or replacement.
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Affiliation(s)
- M Osorio
- School of Engineering, Universidad Pontificia Bolivariana, Circular 1 # 70-01, Medellín, Colombia
| | - A Cañas
- School of Engineering, Universidad Pontificia Bolivariana, Circular 1 # 70-01, Medellín, Colombia
| | - J Puerta
- School of Health Sciences, Universidad Pontificia Bolivariana, Calle 78 B # 72 A-109, Medellín, Colombia.,Medical and Experimental Mycology Group, Corporación para Investigaciones Biológicas, Carrera 72 A # 78 B-141, Medellín, Colombia
| | - L Díaz
- School of Health Sciences, Universidad Pontificia Bolivariana, Calle 78 B # 72 A-109, Medellín, Colombia
| | - T Naranjo
- School of Health Sciences, Universidad Pontificia Bolivariana, Calle 78 B # 72 A-109, Medellín, Colombia.,Medical and Experimental Mycology Group, Corporación para Investigaciones Biológicas, Carrera 72 A # 78 B-141, Medellín, Colombia
| | - I Ortiz
- School of Health Sciences, Universidad Pontificia Bolivariana, Calle 78 B # 72 A-109, Medellín, Colombia
| | - C Castro
- School of Engineering, Universidad Pontificia Bolivariana, Circular 1 # 70-01, Medellín, Colombia.
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30
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Osorio M, Ortiz I, Gañán P, Naranjo T, Zuluaga R, van Kooten TG, Castro C. Novel surface modification of three-dimensional bacterial nanocellulose with cell-derived adhesion proteins for soft tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 100:697-705. [PMID: 30948106 DOI: 10.1016/j.msec.2019.03.045] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 03/04/2019] [Accepted: 03/11/2019] [Indexed: 01/03/2023]
Abstract
Bacterial nanocellulose (BNC) is a natural polymer composed of glucose units with an important application as a two and three-dimensional scaffold for tissue engineering. However, as a polysaccharide, BNC does not have the biological signals of protein biomaterials. Therefore, this paper aims to develop a novel methodology to biomimic soft extracellular matrix (ECM) chemistry on to 3D BNC using the bioengineering of fibroblasts (the cells responsible for producing and regenerating the ECM) to immobilise adhesion proteins such as collagen and fibronectin. Modified 3D BNC (Mod-BNC) biomaterials were morphologically, thermally, and chemically characterised, and furthermore, the cell response was analysed by adhesion studies using atomic force microscopy (AFM), XTT assay, and confocal microscopy. Cell-derived proteins were deposited on the BNC nanoribbon network to modify its surface. The contact angle was increased from 40° to 60°, reducing the wettability of the biomaterial, and during thermogravimetry, the proteins in Mod-BNC exhibited an enhanced thermal stability because of the interactions between themselves and BNC. Chemical and immunocytochemistry analyses confirmed the presence of collagen type I and fibronectin on 3D BNC. These proteins activate integrin adhesion pathways that generate stronger cell adhesions. AFM experiments showed higher forces and energies on modified biomaterials, and moreover, the cells that adhered on to Mod-BNC exhibited higher mitochondrial activity and higher cell populations per cubic millimetre than non-modified surfaces (NMod-BNC). Accordingly, it was established that this novel methodology is robust and able to biomimic the chemical surface of soft ECM and immobilise cell-derived adhesion proteins from fibroblast; moreover, the Mod-BNC exhibited better cell response than NMod-BNC because of the biological signals in 3D BNC.
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Affiliation(s)
- M Osorio
- School of Engineering, Universidad Pontificia Bolivariana, Circular 1 # 70-01, Medellín, Colombia
| | - I Ortiz
- School of Health Sciences, Universidad Pontificia Bolivariana, Calle 78B # 72A-109, Medellín, Colombia
| | - P Gañán
- School of Engineering, Universidad Pontificia Bolivariana, Circular 1 # 70-01, Medellín, Colombia
| | - T Naranjo
- School of Health Sciences, Universidad Pontificia Bolivariana, Calle 78B # 72A-109, Medellín, Colombia; Medical and Experimental Mycology Group, Corporación para Investigaciones Biológicas, Carrera 72 A # 78 B-141, Medellín, Colombia
| | - R Zuluaga
- School of Engineering, Universidad Pontificia Bolivariana, Circular 1 # 70-01, Medellín, Colombia
| | - T G van Kooten
- University of Groningen, University Medical Centre Groningen, Department of Biomedical Engineering, Antonius Deusinglaan 1, 9713 AV Groningen, the Netherlands
| | - C Castro
- School of Engineering, Universidad Pontificia Bolivariana, Circular 1 # 70-01, Medellín, Colombia.
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31
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Hernández-Arriaga AM, Del Cerro C, Urbina L, Eceiza A, Corcuera MA, Retegi A, Auxiliadora Prieto M. Genome sequence and characterization of the bcs clusters for the production of nanocellulose from the low pH resistant strain Komagataeibacter medellinensis ID13488. Microb Biotechnol 2019; 12:620-632. [PMID: 30793484 PMCID: PMC6559206 DOI: 10.1111/1751-7915.13376] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 01/25/2019] [Accepted: 01/27/2019] [Indexed: 11/28/2022] Open
Abstract
Komagataeibacter medellinensis ID13488 (formerly Gluconacetobacter medellinensis ID13488) is able to produce crystalline bacterial cellulose (BC) under high acidic growth conditions. These abilities make this strain desirable for industrial BC production from acidic residues (e.g. wastes generated from cider production). To explore the molecular bases of the BC biosynthesis in this bacterium, the genome has been sequenced revealing a sequence of 3.4 Mb containing three putative plasmids of 38.1 kb (pKM01), 4.3 kb (pKM02) and 3.3 Kb (pKM03). Genome comparison analyses of K. medellinensis ID13488 with other cellulose‐producing related strains resulted in the identification of the bcs genes involved in the cellulose biosynthesis. Genes arrangement and composition of four bcs clusters (bcs1, bcs2, bcs3 and bcs4) was studied by RT‐PCR, and their organization in four operons transcribed as four independent polycistronic mRNAs was determined. qRT‐PCR experiments demonstrated that mostly bcs1 and bcs4 are expressed under BC production conditions, suggesting that these operons direct the synthesis of BC. Genomic differences with the close related strain K. medellinensis NBRC 3288 unable to produce BC were also described and discussed.
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Affiliation(s)
- Ana M Hernández-Arriaga
- Polymer Biotechnology Group, Microbial and Plant Biotechnology Department, Centro de Investigaciones Biológicas, CIB-CSIC, Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Carlos Del Cerro
- Polymer Biotechnology Group, Microbial and Plant Biotechnology Department, Centro de Investigaciones Biológicas, CIB-CSIC, Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Leire Urbina
- Materials + Technology' Group, Engineering School of Gipuzkoa, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Pza. Europa 1, 20018, Donostia - San Sebastián, Spain
| | - Arantxa Eceiza
- Materials + Technology' Group, Engineering School of Gipuzkoa, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Pza. Europa 1, 20018, Donostia - San Sebastián, Spain
| | - Mª Angeles Corcuera
- Materials + Technology' Group, Engineering School of Gipuzkoa, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Pza. Europa 1, 20018, Donostia - San Sebastián, Spain
| | - Aloña Retegi
- Materials + Technology' Group, Engineering School of Gipuzkoa, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Pza. Europa 1, 20018, Donostia - San Sebastián, Spain
| | - M Auxiliadora Prieto
- Polymer Biotechnology Group, Microbial and Plant Biotechnology Department, Centro de Investigaciones Biológicas, CIB-CSIC, Ramiro de Maeztu 9, 28040, Madrid, Spain
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32
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Jeremic S, Djokic L, Ajdačić V, Božinović N, Pavlovic V, Manojlović DD, Babu R, Senthamaraikannan R, Rojas O, Opsenica I, Nikodinovic-Runic J. Production of bacterial nanocellulose (BNC) and its application as a solid support in transition metal catalysed cross-coupling reactions. Int J Biol Macromol 2019; 129:351-360. [PMID: 30710586 DOI: 10.1016/j.ijbiomac.2019.01.154] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 12/20/2018] [Accepted: 01/27/2019] [Indexed: 11/29/2022]
Abstract
Bacterial nanocellulose (BNC) emerged as an attractive advanced biomaterial that provides desirable properties such as high strength, lightweight, tailorable surface chemistry, hydrophilicity, and biodegradability. BNC was successfully obtained from a wide range of carbon sources including sugars derived from grass biomass using Komagataeibacter medellinensis ID13488 strain with yields up to 6 g L-1 in static fermentation. Produced BNC was utilized in straightforward catalyst preparation as a solid support for two different transition metals, palladium and copper with metal loading of 20 and 3 wt%, respectively. Sustainable catalysts were applied in the synthesis of valuable fine chemicals, such as biphenyl-4-amine and 4'-fluorobiphenyl-4-amine, used in drug discovery, perfumes and dye industries with excellent product yields of up to 99%. Pd/BNC catalyst was reused 4 times and applied in two consecutive reactions, Suzuki-Miyaura cross-coupling reaction followed by hydrogenation of nitro to amino group while Cu/BNC catalyst was examined in Chan-Lam coupling reaction. Overall, the environmentally benign process of obtaining nanocellulose from biomass, followed by its utilisation as a solid support in metal-catalysed reactions and its recovery has been described. These findings reveal that BNC is a good support material, and it can be used as a support for different catalytic systems.
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Affiliation(s)
- Sanja Jeremic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11000 Belgrade, Serbia
| | - Lidija Djokic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11000 Belgrade, Serbia
| | - Vladimir Ajdačić
- University of Belgrade, Faculty of Chemistry, Studentski trg 16, P.O. Box 51, 11158 Belgrade, Serbia
| | - Nina Božinović
- University of Belgrade, Faculty of Chemistry, Studentski trg 16, P.O. Box 51, 11158 Belgrade, Serbia
| | - Vladimir Pavlovic
- Faculty of Agriculture, University of Belgrade, Nemanjina 6, 11080, Belgrade, Zemun, Serbia
| | - Dragan D Manojlović
- University of Belgrade, Faculty of Chemistry, Studentski trg 16, P.O. Box 51, 11158 Belgrade, Serbia; South Ural State University, Chelyabinsk, Lenin prospect 76, 454080, Russia
| | - Ramesh Babu
- AMBER Centre, Trinity College Dublin, College Green, Dublin 2, Ireland; BEACON SFI Bioeconomy Research Centre, O'Brien Science Centre, University College Dublin, Ireland
| | | | - Orlando Rojas
- Aalto University, Department of Bioproducts and Biosystems, P.O. Box 11000, FI-00076 Aalto, Finland
| | - Igor Opsenica
- University of Belgrade, Faculty of Chemistry, Studentski trg 16, P.O. Box 51, 11158 Belgrade, Serbia.
| | - Jasmina Nikodinovic-Runic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11000 Belgrade, Serbia.
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33
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Osorio M, Fernández-Morales P, Gañán P, Zuluaga R, Kerguelen H, Ortiz I, Castro C. Development of novel three-dimensional scaffolds based on bacterial nanocellulose for tissue engineering and regenerative medicine: Effect of processing methods, pore size, and surface area. J Biomed Mater Res A 2018; 107:348-359. [PMID: 30421501 DOI: 10.1002/jbm.a.36532] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 05/17/2018] [Accepted: 08/16/2018] [Indexed: 01/13/2023]
Abstract
Despite the efforts focused on manufacturing biological engineering scaffolds for tissue engineering and regenerative medicine, a biomaterial that meets the necessary characteristics for these applications has not been developed to date. Bacterial nanocellulose (BNC) is an outstanding biomaterial for tissue engineering and regenerative medicine; however, BNC's applications have been focused on two-dimensional (2D) medical devices, such as wound dressings. Given the need for three-dimensional (3D) porous biomaterials, this work evaluates two methods to generate (3D) BNC scaffolds. The structural characteristics and physicochemical, mechanical, and cell behaviour properties were evaluated. Likewise, the effects of the pore size and surface area in the mechanical performance of BNC biomaterials and their cell response in a fibroblast cell line are discussed for the first time. In this study, a new method is proposed for the development of 3D BNC scaffolds using paraffin wax. This new method is less time-consuming, more robust in removing the paraffin and less aggressive toward the BNC microstructure. Moreover, the biomaterial had regular porosity with good mechanical behaviour; the cells can adhere and increase in number without overcrowding. Regarding the pore size and surface area, highly interconnected porosities (measuring approximately 60 μm) and high surface area are advantageous for the biomaterial's mechanical properties and cell behaviour. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 107A: 348-359, 2019.
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Affiliation(s)
- Marlon Osorio
- School of Engineering, Universidad Pontificia Bolivariana, Circular 1 #, 70-01, Medellín, Colombia
| | | | - Piedad Gañán
- School of Engineering, Universidad Pontificia Bolivariana, Circular 1 #, 70-01, Medellín, Colombia
| | - Robín Zuluaga
- School of Engineering, Universidad Pontificia Bolivariana, Circular 1 #, 70-01, Medellín, Colombia
| | - Herbert Kerguelen
- School of Engineering, Universidad Pontificia Bolivariana, Circular 1 #, 70-01, Medellín, Colombia
| | - Isabel Ortiz
- School of Health Sciences, Universidad Pontificia Bolivariana, Calle 78B # 7, 2A-109, Medellín, Colombia
| | - Cristina Castro
- School of Engineering, Universidad Pontificia Bolivariana, Circular 1 #, 70-01, Medellín, Colombia
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Liu LX, Liu SX, Wang YM, Bi JC, Chen HM, Deng J, Zhang C, Hu QS, Li CF. Komagataeibacter cocois sp. nov., a novel cellulose-producing strain isolated from coconut milk. Int J Syst Evol Microbiol 2018; 68:3125-3131. [PMID: 30132753 DOI: 10.1099/ijsem.0.002947] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Phylogenetic analysis was performed on a cellulose-producing strain, designated WE7T, isolated from contaminated coconut milk. The analysis utilized nearly complete 16S rRNA gene sequences, as well as concatenated partial sequences of the housekeeping genes dnaK, groEL and rpoB, and allowed identification of the strain as belonging to the genus Komagataeibacter. DNA-DNA correlation or average nucleotide identity analysis was performed between WE7T and its closest phylogenetic neighbours, and the resulting values were below the species level (<70 % and <95 %), suggesting that the strain represents a novel species in genus Komagataeibacter. Strain WE7T was coupled with Komagataeibacter species more tightly than with Gluconacetobacter species in a 16S rRNA gene sequence phylogenetic tree. Strain WE7T can be differentiated from closely related Komagataeibacter and Gluconacetobacter entanii species by the ability to grow on the carbon sources d-mannitol, sodium d-gluconate and glycerol, the ability to form acid by d-fructose, sucrose, d-mannitol, d-galactose and ethanol, and the ability to grow without acetic acid. The major fatty acid of WE7T is C18 : 1ω9c (52.3 %). The DNA G+C content of WE7T is 63.2 mol%. The name Komagataeibacter cocois sp. nov. is proposed, with the type strain WE7T (=CGMCC 1.15338T=JCM 31140T).
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Affiliation(s)
- Long-Xiang Liu
- 1College of Food Science and Technology, Hainan University, Haikou 570228, PR China
| | - Si-Xin Liu
- 2College of Materials and Chemical Engineering, Hainan University, Haikou 570228, PR China.,1College of Food Science and Technology, Hainan University, Haikou 570228, PR China
| | - Yan-Mei Wang
- 1College of Food Science and Technology, Hainan University, Haikou 570228, PR China
| | - Ji-Cai Bi
- 1College of Food Science and Technology, Hainan University, Haikou 570228, PR China
| | - Hua-Mei Chen
- 1College of Food Science and Technology, Hainan University, Haikou 570228, PR China
| | - Jian Deng
- 1College of Food Science and Technology, Hainan University, Haikou 570228, PR China
| | - Cui Zhang
- 1College of Food Science and Technology, Hainan University, Haikou 570228, PR China
| | - Qi-Song Hu
- 1College of Food Science and Technology, Hainan University, Haikou 570228, PR China
| | - Cong-Fa Li
- 1College of Food Science and Technology, Hainan University, Haikou 570228, PR China
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Škraban J, Cleenwerck I, Vandamme P, Fanedl L, Trček J. Genome sequences and description of novel exopolysaccharides producing species Komagataeibacter pomaceti sp. nov. and reclassification of Komagataeibacter kombuchae (Dutta and Gachhui 2007) Yamada et al., 2013 as a later heterotypic synonym of Komagataeibacter hansenii (Gosselé et al. 1983) Yamada et al., 2013. Syst Appl Microbiol 2018; 41:581-592. [PMID: 30177404 DOI: 10.1016/j.syapm.2018.08.006] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 08/07/2018] [Accepted: 08/10/2018] [Indexed: 11/30/2022]
Abstract
Strains T5K1 and AV446 isolated from apple cider vinegars during a submerged vinegar production in two separate vinegar facilities showed 94% 16S rRNA gene similarity to its closest neighbors Komagataeibacter maltaceti LMG 1529T and Gluconacetobacter entanii LTH 4560T. Further phylogenetic and phenotypic characterizations indicated that the isolates belonged to a novel species of the Komagataeibacter genus. Comparison based on 16S-23S rRNA gene ITS sequences and concatenated partial sequences of the housekeeping genes dnaK, groEL and rpoB, grouped both strains to a single phylogenetic cluster well separated from the other species of the Komagataeibacter genus. Average nucleotide identity of T5K1 and AV446 draft genome sequences compared to other Komagataeibacter type strains was below 94% and at the same time, in-silico DNA-DNA hybridization was below 70%. Both strains on the other hand showed approximately 98% (average nucleotide identity) and 87% (in silico DNA-DNA hybridization) similarity to each other. Strains T5K1 and AV446 can be differentiated from other Komagataeibacter type strains based on their ability to produce 2-keto-d-gluconic acid and at the same time inability to produce 5-keto-d-gluconic acid. Furthermore, strains of the new species do not grow on Asai medium supplemented with d-glucose or d-mannitol. The growth is also absent (T5K1) or weak (AV446) on Hoyer-Frateur medium supplemented with afore mentioned sugars. Both strains produce cellulose. In addition, draft genome analysis revealed that strains T5K1 and AV446 possess genes involved in the synthesis of acetan-like extracellular heteropolysaccharide. We propose the name Komagataeibacter pomaceti sp. nov. for the new species with LMG 30150T [=CCM 8723T=ZIM B1029T] as the type strain. Data collected in this study and in a previous study also revealed that Komagataeibacter kombuchae is a later heterotypic synonym of Komagataeibacter hansenii.
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Affiliation(s)
- Jure Škraban
- University of Maribor, Faculty of Natural Sciences and Mathematics, Department of Biology, Maribor, Slovenia
| | - Ilse Cleenwerck
- BCCM/LMG Bacteria Collection, Laboratory of Microbiology, Ghent University, Faculty of Sciences, Ghent, Belgium
| | - Peter Vandamme
- BCCM/LMG Bacteria Collection, Laboratory of Microbiology, Ghent University, Faculty of Sciences, Ghent, Belgium
| | - Lijana Fanedl
- University of Ljubljana, Biotechnical Faculty, Ljubljana, Slovenia
| | - Janja Trček
- University of Maribor, Faculty of Natural Sciences and Mathematics, Department of Biology, Maribor, Slovenia; University of Maribor, Faculty of Chemistry and Chemical Engineering, Maribor, Slovenia.
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Draft Genome Sequence of Komagataeibacter maltaceti LMG 1529 T, a Vinegar-Producing Acetic Acid Bacterium Isolated from Malt Vinegar Brewery Acetifiers. GENOME ANNOUNCEMENTS 2018; 6:6/16/e00330-18. [PMID: 29674558 PMCID: PMC5908927 DOI: 10.1128/genomea.00330-18] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We present the genome sequence of Komagataeibacter maltaceti LMG 1529T, which is a vinegar-producing acetic acid bacterium. The draft genome sequence consists of 3.6 Mb and contains 3,225 predicted protein-encoding genes. In addition, 53 genes encoding potential oxidoreductases were identified.
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37
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Araújo IMS, Silva RR, Pacheco G, Lustri WR, Tercjak A, Gutierrez J, Júnior JRS, Azevedo FHC, Figuêredo GS, Vega ML, Ribeiro SJL, Barud HS. Hydrothermal synthesis of bacterial cellulose-copper oxide nanocomposites and evaluation of their antimicrobial activity. Carbohydr Polym 2017; 179:341-349. [PMID: 29111060 DOI: 10.1016/j.carbpol.2017.09.081] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 09/12/2017] [Accepted: 09/25/2017] [Indexed: 01/01/2023]
Abstract
In this work, for the first time bacterial cellulose (BC) hydrogel membranes were used for the fabrication of antimicrobial cellulosic nanocomposites by hydrothermal deposition of Cu derivative nanoparticles (i.e.Cu(0) and CuxOy species). BC-Cu nanocomposites were characterized by FTIR, SEM, AFM, XRD and TGA, to study the effect of hydrothermal processing time on the final physicochemical properties of final products. XRD result show that depending on heating time (3-48h), different CuxOy phases were achieved. SEM and AFM analyses unveil the presence of the Cu(0) and copper CuxOy nanoparticles over BC fibrils while the surface of 3D network became more compact and smother for longer heating times. Furthermore, the increase of heating time placed deleterious effect on the structure of BC network leading to decrease of BC crystallinity as well as of the on-set degradation temperature. Notwithstanding, BC-Cu nanocomposites showed excellent antimicrobial activity against E. coli, S. aureus and Salmonella bacteria suggesting potential applications as bactericidal films.
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Affiliation(s)
- Inês M S Araújo
- Universidade Federal do Piauí, Departamento de Química, Campus Ministro Petrônio Portela, Uninga, 64049-550,Teresina, PI, Brazil.
| | - Robson R Silva
- Universidade Estadual Paulista Júlio de Mesquita Filho, Instituto de Química de Araraquara, Departamento de Química Geral e Inorgânica, Rua Professor Francisco Degni, 55, Jardim Quitandinha, 14.800-060, Araraquara, SP, Brazil; Instituto de Física de São Carlos, Universidade São Paulo, 13560-970, São Carlos, SP, Brazil..
| | - Guilherme Pacheco
- Universidade de Araraquara, Uniara, Laboratório de Biopolímeros e Biomateriais (BIOPOLMAT), Rua. Carlos Gomes, 1217, 14.801-320, Araraquara, SP, Brazil.
| | - Wilton R Lustri
- Universidade de Araraquara, Uniara, Laboratório de Biopolímeros e Biomateriais (BIOPOLMAT), Rua. Carlos Gomes, 1217, 14.801-320, Araraquara, SP, Brazil.
| | - Agnieszka Tercjak
- University of the Basque Country (UPV/EHU), Dpto. Ingeniería Química y del Medio Ambiente, Escuela Politécnica Donostia-San Sebastián, Pza. Europa 1, 20018, Donostia-San Sebastián, Spain.
| | - Junkal Gutierrez
- University of the Basque Country (UPV/EHU), Dpto. Ingeniería Química y del Medio Ambiente, Escuela Politécnica Donostia-San Sebastián, Pza. Europa 1, 20018, Donostia-San Sebastián, Spain.
| | - José R S Júnior
- Universidade Federal do Piauí, Departamento de Química, Campus Ministro Petrônio Portela, Uninga, 64049-550,Teresina, PI, Brazil.
| | - Francisco H C Azevedo
- Universidade Luterana do Brasil, Programa de Pós Graduação Em Genética e Toxicologia Aplicada, Av. Farroupilha, 8001, Prédio 01, São Luís, 92.450-900, Canoas, RS, Brazil.
| | - Girlene S Figuêredo
- Universidade Federal do Piauí, Departamento de Química, Campus Ministro Petrônio Portela, Uninga, 64049-550,Teresina, PI, Brazil.
| | - Maria L Vega
- Universidade Federal do Piauí, Departamento de Química, Campus Ministro Petrônio Portela, Uninga, 64049-550,Teresina, PI, Brazil.
| | - Sidney J L Ribeiro
- Universidade Estadual Paulista Júlio de Mesquita Filho, Instituto de Química de Araraquara, Departamento de Química Geral e Inorgânica, Rua Professor Francisco Degni, 55, Jardim Quitandinha, 14.800-060, Araraquara, SP, Brazil.
| | - Hernane S Barud
- Universidade de Araraquara, Uniara, Laboratório de Biopolímeros e Biomateriais (BIOPOLMAT), Rua. Carlos Gomes, 1217, 14.801-320, Araraquara, SP, Brazil.
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Zhang H, Xu X, Chen X, Yuan F, Sun B, Xu Y, Yang J, Sun D. Complete genome sequence of the cellulose-producing strain Komagataeibacter nataicola RZS01. Sci Rep 2017; 7:4431. [PMID: 28667320 PMCID: PMC5493696 DOI: 10.1038/s41598-017-04589-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 05/17/2017] [Indexed: 12/29/2022] Open
Abstract
Komagataeibacter nataicola is an acetic acid bacterium (AAB) that can produce abundant bacterial cellulose and tolerate high concentrations of acetic acid. To globally understand its fermentation characteristics, we present a high-quality complete genome sequence of K. nataicola RZS01. The genome consists of a 3,485,191-bp chromosome and 6 plasmids, which encode 3,514 proteins and bear three cellulose synthase operons. Phylogenetic analysis at the genome level provides convincing evidence of the evolutionary position of K. nataicola with respect to related taxa. Genomic comparisons with other AAB revealed that RZS01 shares 36.1%~75.1% of sequence similarity with other AAB. The sequence data was also used for metabolic analysis of biotechnological substrates. Analysis of the resistance to acetic acid at the genomic level indicated a synergistic mechanism responsible for acetic acid tolerance. The genomic data provide a viable platform that can be used to understand and manipulate the phenotype of K. nataicola RZS01 to further improve bacterial cellulose production.
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Affiliation(s)
- Heng Zhang
- Chemicobiology and Functional Materials Institute, Nanjing University of Science and Technology, Nanjing, 210094, China.,School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Xuran Xu
- Chemicobiology and Functional Materials Institute, Nanjing University of Science and Technology, Nanjing, 210094, China.,School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Xiao Chen
- Chemicobiology and Functional Materials Institute, Nanjing University of Science and Technology, Nanjing, 210094, China.,School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Fanshu Yuan
- Chemicobiology and Functional Materials Institute, Nanjing University of Science and Technology, Nanjing, 210094, China.,School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Bianjing Sun
- Chemicobiology and Functional Materials Institute, Nanjing University of Science and Technology, Nanjing, 210094, China.,School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Yunhua Xu
- Department of Life Sciences, Lianyungang Normal College, Lianyungang, 222000, China
| | - Jiazhi Yang
- Chemicobiology and Functional Materials Institute, Nanjing University of Science and Technology, Nanjing, 210094, China. .,School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
| | - Dongping Sun
- Chemicobiology and Functional Materials Institute, Nanjing University of Science and Technology, Nanjing, 210094, China. .,School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
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39
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Effect of Different Carbon Sources on Bacterial Nanocellulose Production and Structure Using the Low pH Resistant Strain Komagataeibacter Medellinensis. MATERIALS 2017; 10:ma10060639. [PMID: 28773001 PMCID: PMC5554020 DOI: 10.3390/ma10060639] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 06/03/2017] [Accepted: 06/07/2017] [Indexed: 11/16/2022]
Abstract
Bacterial cellulose (BC) is a polymer obtained by fermentation with microorganism of different genera. Recently, new producer species have been discovered, which require identification of the most important variables affecting cellulose production. In this work, the influence of different carbon sources in BC production by a novel low pH-resistant strain Komagataeibacter medellinensis was established. The Hestrin-Schramm culture medium was used as a reference and was compared to other media comprising glucose, fructose, and sucrose, used as carbon sources at three concentrations (1, 2, and 3% w/v). The BC yield and dynamics of carbon consumption were determined at given fermentation times during cellulose production. While the carbon source did not influence the BC structural characteristics, different production levels were determined: glucose > sucrose > fructose. These results highlight considerations to improve BC industrial production and to establish the BC property space for applications in different fields.
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40
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Identification of acetic acid bacteria through matrix-assisted laser desorption/ionization time-of-flight mass spectrometry and report of Gluconobacter nephelii Kommanee et al. 2011 and Gluconobacter uchimurae Tanasupawat et al. 2012 as later heterotypic synonyms of Gluconobacter japonicus Malimas et al. 2009 and Gluconobacter oxydans (Henneberg 1897) De Ley 1961 (Approved Lists 1980) emend. Gosselé et al. 1983, respectively. Syst Appl Microbiol 2017; 40:123-134. [DOI: 10.1016/j.syapm.2017.01.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 01/09/2017] [Accepted: 01/12/2017] [Indexed: 01/31/2023]
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41
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Bioactive 3D-Shaped Wound Dressings Synthesized from Bacterial Cellulose: Effect on Cell Adhesion of Polyvinyl Alcohol Integrated In Situ. INT J POLYM SCI 2017. [DOI: 10.1155/2017/3728485] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
We investigated wound dressing composites comprising fibrils of bacterial cellulose (BC) grown by fermentation in the presence of polyvinyl alcohol (PVA) followed by physical crosslinking. The reference biointerface, neat BC, favoured adhesion of fibroblasts owing to size exclusion effects. Furthermore, it resisted migration across the biomaterial. Such effects were minimized in the case of PVA/BC membranes. Therefore, the latter are suggested in cases where cell adhesion is to be avoided, for instance, in the design of interactive wound dressings with facile exudate control. The bioactivity and other properties of the membranes were related to their morphology and structure and considered those of collagen fibres. Bioactive materials were produced by simple 3D templating of BC during growth and proposed for burn and skin ulcer treatment.
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Semjonovs P, Ruklisha M, Paegle L, Saka M, Treimane R, Skute M, Rozenberga L, Vikele L, Sabovics M, Cleenwerck I. Cellulose synthesis by Komagataeibacter rhaeticus strain P 1463 isolated from Kombucha. Appl Microbiol Biotechnol 2016; 101:1003-1012. [DOI: 10.1007/s00253-016-7761-8] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 07/27/2016] [Accepted: 08/01/2016] [Indexed: 11/29/2022]
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Li Y, Tian J, Tian H, Chen X, Ping W, Tian C, Lei H. Mutation-based selection and analysis of Komagataeibacter hansenii HDM1-3 for improvement in bacterial cellulose production. J Appl Microbiol 2016; 121:1323-1334. [PMID: 27455093 DOI: 10.1111/jam.13244] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 03/28/2016] [Accepted: 04/10/2016] [Indexed: 11/29/2022]
Abstract
AIMS A low yield of bacterial cellulose (BC) always results from an excessive accumulation of organic acids. Screening and the selection of bacterial mutants with a low accumulation of organic acids is an efficient approach for improving BC production. METHODS AND RESULTS In combination with the proton suicide method (medium containing NaBr-NaBrO3 ), diethyl sulphate chemical mutagenesis coupled with 60 Co-γ irradiation treatment were performed for the screening and selection of desired mutant lines with a high yield of BC. Two high-yield strains, Br-3 and Co-5, as well as a low-yield strain, Br-12, were obtained. Amplified fragment length polymorphism (AFLP) was applied to explore the differences between the mutant lines and the wild type. For the Br-12 line, three specific fragments were verified, corresponding to TonB-dependent transport (TBDT), exopolysaccharides output protein (PePr) and an unknown gene. For Co-5, two specific fragments were matched, acsD and UDP-galactose-4-epimerase. In addition, metabolic analysis for the mutant lines indicated that BC production may be limited by excessive accumulation of organic acids in the fermentation. The limitation would be resolved by the cross-talk of genes involved in BC biosynthesis. CONCLUSIONS Reduced organic acid by-products from glucose in bypasses were found to be responsible for the high-yield BC synthesis in Komagataeibacter hansenii mutant strains. SIGNIFICANCE AND IMPACT OF THE STUDY The metabolic process was varied by mutagenesis-induced gene disruption of the metabolic products. A new idea was provided for the targeted screening and characterization of mutants in the future.
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Affiliation(s)
- Y Li
- Laboratory of Microbiology and Laboratory of Crop Physiology, Chinese Academic Institute of Geography and Agroecology in Northeast, Changchun, China.,University of Chinese Academy of Sciences, Beijing, China
| | - J Tian
- Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin, China
| | - H Tian
- Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin, China
| | - X Chen
- Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin, China
| | - W Ping
- Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin, China.,Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education, Harbin, China
| | - C Tian
- Laboratory of Microbiology and Laboratory of Crop Physiology, Chinese Academic Institute of Geography and Agroecology in Northeast, Changchun, China.
| | - H Lei
- Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin, China. .,Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education, Harbin, China.
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44
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Dias DR, Silva MS, Cristina de Souza A, Magalhăes-Guedes KT, Ribeiro FSDR, Schwan RF. Vinegar Production from Jabuticaba ( Myrciaria jaboticaba) Fruit Using Immobilized Acetic Acid Bacteria. Food Technol Biotechnol 2016; 54:351-359. [PMID: 27956867 DOI: 10.17113/ftb.54.03.16.4416] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Cell immobilization comprises the retention of metabolically active cells inside a polymeric matrix. In this study, the production of jabuticaba (Myrciaria jaboticaba) vinegar using immobilized Acetobacter aceti and Gluconobacter oxydans cells is proposed as a new method to prevent losses of jabuticaba fruit surplus. The pulp of jabuticaba was processed and Saccharomyces cerevisiae CCMA 0200 was used to ferment the must for jabuticaba wine production. Sugars, alcohols (ethanol and glycerol) and organic acids were assayed by high-performance liquid chromatography. Volatile compounds were determined by gas chromatography-flame ionization detector. The ethanol content of the produced jabuticaba wine was approx. 74.8 g/L (9.5% by volume) after 168 h of fermentation. Acetic acid fermentation for vinegar production was performed using a mixed culture of immobilized A. aceti CCT 0190 and G. oxydans CCMA 0350 cells. The acetic acid yield was 74.4% and productivity was 0.29 g/(L·h). The vinegar had particularly high concentrations of citric (6.67 g/L), malic (7.02 g/L) and succinic (5.60 g/L) acids. These organic acids give a suitable taste and flavour to the vinegar. Seventeen compounds (aldehydes, higher alcohols, terpene, acetate, diether, furans, acids, ketones and ethyl esters) were identified in the jabuticaba vinegar. In conclusion, vinegar was successfully produced from jabuticaba fruits using yeast and immobilized mixed cultures of A. aceti and G. oxydans. To the best of our knowledge, this is the first study to use mixed culture of immobilized cells for the production of jabuticaba vinegar.
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Affiliation(s)
- Disney Ribeiro Dias
- Department of Food Science, Federal University of Lavras (UFLA), University Campus,
37200-000 Lavras, MG, Brazil
| | - Monique Suela Silva
- Department of Biology, Federal University of Lavras (UFLA), University Campus,
37200-000 Lavras, MG, Brazil
| | - Angélica Cristina de Souza
- Department of Biology, Federal University of Lavras (UFLA), University Campus,
37200-000 Lavras, MG, Brazil
| | | | | | - Rosane Freitas Schwan
- Department of Biology, Federal University of Lavras (UFLA), University Campus,
37200-000 Lavras, MG, Brazil
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Reis VM, Teixeira KRDS. Nitrogen fixing bacteria in the family Acetobacteraceae and their role in agriculture. J Basic Microbiol 2015; 55:931-49. [PMID: 25736602 PMCID: PMC7166518 DOI: 10.1002/jobm.201400898] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Accepted: 01/27/2015] [Indexed: 11/17/2022]
Abstract
For centuries, the Acetobacteraceae is known as a family that harbors many species of organisms of biotechnological importance for industry. Nonetheless, since 1988 representatives of this family have also been described as nitrogen fixing bacteria able to plant growth promotion by a variety of mechanisms. Nitrogen fixation is a biological process that guarantees that the atmospheric N2 is incorporated into organic matter by several bacterial groups. Most representatives of this group, also known as diazotrophic, are generally associated with soil rhizosphere of many plants and also establishing a more specific association living inside roots, leaves, and others plants tissues as endophyte. Their roles as plant growth-promoting microorganisms are generally related to increase in plant biomass, phosphate and other mineral solubilization, and plant pathogen control. Here, we report many of these plant growth-promoting processes related to nitrogen fixing species already described in Acetobacteraceae family, especially Gluconacetobacter diazotrophicus and their importance to agriculture. In addition, a brief review of the state of art of the phylogenetics, main physiological and biochemical characteristics, molecular and functional genomic data of this group of Acetobacteraceae is presented.
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46
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Adaptive mutation related to cellulose producibility in Komagataeibacter medellinensis (Gluconacetobacter xylinus) NBRC 3288. Appl Microbiol Biotechnol 2015; 99:7229-40. [DOI: 10.1007/s00253-015-6598-x] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 04/06/2015] [Accepted: 04/10/2015] [Indexed: 10/23/2022]
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47
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Yetiman AE, Kesmen Z. Identification of acetic acid bacteria in traditionally produced vinegar and mother of vinegar by using different molecular techniques. Int J Food Microbiol 2015; 204:9-16. [PMID: 25828705 DOI: 10.1016/j.ijfoodmicro.2015.03.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 02/24/2015] [Accepted: 03/12/2015] [Indexed: 11/16/2022]
Abstract
Culture-dependent and culture-independent methods were combined for the investigation of acetic acid bacteria (AAB) populations in traditionally produced vinegars and mother of vinegar samples obtained from apple and grape. The culture-independent denaturing gradient gel electrophoresis (DGGE) analysis, which targeted the V7-V8 regions of the 16S rRNA gene, showed that Komagataeibacter hansenii and Komagataeibacter europaeus/Komagataeibacter xylinus were the most dominant species in almost all of the samples analyzed directly. The culture-independent GTG5-rep PCR fingerprinting was used in the preliminary characterization of AAB isolates and species-level identification was carried out by sequencing of the 16S rRNA gene, 16S-23S rDNA internally transcribed to the spacer (ITS) region and tuf gene. Acetobacter okinawensis was frequently isolated from samples obtained from apple while K. europaeus was identified as the dominant species, followed by Acetobacter indonesiensis in the samples originating from grape. In addition to common molecular techniques, real-time PCR intercalating dye assays, including DNA melting temperature (Tm) and high resolution melting analysis (HRM), were applied to acetic acid bacterial isolates for the first time. The target sequence of ITS region generated species-specific HRM profiles and Tm values allowed discrimination at species level.
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Affiliation(s)
- Ahmet E Yetiman
- Erciyes University, Faculty of Engineering, Food Engineering Department, Kayseri, Turkey
| | - Zülal Kesmen
- Erciyes University, Faculty of Engineering, Food Engineering Department, Kayseri, Turkey.
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Castro C, Cordeiro N, Faria M, Zuluaga R, Putaux JL, Filpponen I, Velez L, Rojas OJ, Gañán P. In-situ glyoxalization during biosynthesis of bacterial cellulose. Carbohydr Polym 2015; 126:32-9. [PMID: 25933519 DOI: 10.1016/j.carbpol.2015.03.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 03/03/2015] [Accepted: 03/04/2015] [Indexed: 10/23/2022]
Abstract
A novel method to synthesize highly crosslinked bacterial cellulose (BC) is reported. The glyoxalization is started in-situ, in the culture medium during biosynthesis of cellulose by Gluconacetobacter medellensis bacteria. Strong crosslinked networks were formed in the contact areas between extruded cellulose ribbons by reaction with the glyoxal precursors. The crystalline structure of cellulose was preserved while the acidic component of the surface energy was reduced. As a consequence, its predominant acidic character and the relative contribution of the dispersive component increased, endowing the BC network with a higher hydrophobicity. This route for in-situ crosslinking is expected to facilitate other modifications upon biosynthesis of cellulose ribbons by microorganisms and to engineer the strength and surface energy of their networks.
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Affiliation(s)
- Cristina Castro
- School of Engineering, Universidad Pontificia Bolivariana, Circular 1 no. 70-01, Medellín, Colombia.
| | - Nereida Cordeiro
- Competence Centre in Exact Science and Engineering, University of Madeira, 9000-390 Funchal, Portugal
| | - Marisa Faria
- Competence Centre in Exact Science and Engineering, University of Madeira, 9000-390 Funchal, Portugal
| | - Robin Zuluaga
- School of Engineering, Universidad Pontificia Bolivariana, Circular 1 no. 70-01, Medellín, Colombia.
| | - Jean-Luc Putaux
- Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), Affiliated with Université Joseph, BP 53, F-38041 Grenoble Cedex 9, France
| | - Ilari Filpponen
- Biobased Colloids and Materials group (BiCMat), Department of Forest Products Technology, Aalto University, School of Chemical Technology, P.O. Box 16300, 00076 Aalto, Espoo, Finland
| | - Lina Velez
- School of Engineering, Universidad Pontificia Bolivariana, Circular 1 no. 70-01, Medellín, Colombia
| | - Orlando J Rojas
- Biobased Colloids and Materials group (BiCMat), Department of Forest Products Technology, Aalto University, School of Chemical Technology, P.O. Box 16300, 00076 Aalto, Espoo, Finland
| | - Piedad Gañán
- School of Engineering, Universidad Pontificia Bolivariana, Circular 1 no. 70-01, Medellín, Colombia
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Castro C, Zuluaga R, Rojas OJ, Filpponen I, Orelma H, Londoño M, Betancourt S, Gañán P. Highly percolated poly(vinyl alcohol) and bacterial nanocellulose synthesized in situ by physical-crosslinking: exploiting polymer synergies for biomedical nanocomposites. RSC Adv 2015. [DOI: 10.1039/c5ra16966f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Bacterial cellulose (BC) grown from a culture medium in the presence of water-soluble poly(vinyl alcohol) (PVA) produced an assemblage that was used as precursor for the synthesis of biocompatible nanocomposites.
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Affiliation(s)
- C. Castro
- School of Engineering
- Universidad Pontificia Bolivariana
- Medellín
- Colombia
| | - R. Zuluaga
- School of Engineering
- Universidad Pontificia Bolivariana
- Medellín
- Colombia
| | - O. J. Rojas
- Biobased Colloids and Materials Group (BiCMat)
- School of Chemical Technology
- Aalto University
- FI-00076 Aalto
- Finland
| | - I. Filpponen
- Biobased Colloids and Materials Group (BiCMat)
- School of Chemical Technology
- Aalto University
- FI-00076 Aalto
- Finland
| | - H. Orelma
- Biobased Colloids and Materials Group (BiCMat)
- School of Chemical Technology
- Aalto University
- FI-00076 Aalto
- Finland
| | - M. Londoño
- Biomaterials Laboratory
- Department of Biomedical Engineering
- Engineering School of Antioquia – EIA
- CES University
- Sabaneta
| | - S. Betancourt
- School of Engineering
- Universidad Pontificia Bolivariana
- Medellín
- Colombia
| | - P. Gañán
- School of Engineering
- Universidad Pontificia Bolivariana
- Medellín
- Colombia
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Trček J, Barja F. Updates on quick identification of acetic acid bacteria with a focus on the 16S-23S rRNA gene internal transcribed spacer and the analysis of cell proteins by MALDI-TOF mass spectrometry. Int J Food Microbiol 2014; 196:137-44. [PMID: 25589227 DOI: 10.1016/j.ijfoodmicro.2014.12.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Revised: 11/13/2014] [Accepted: 12/05/2014] [Indexed: 10/24/2022]
Abstract
Acetic acid bacteria have attracted much attention over the past few years, due mainly to their metabolic traits that are of interest to the biotechnology industry. In addition, it turns out that their ecological habitats are almost unlimited since they have been found as symbionts in different insects and also as emerging opportunistic human pathogens. Very surprising is the finding that they colonize niches considered anaerobic, disproving the generalized statement that they are strict aerobes. Since they have taken on different biological roles in our environment, more and more people are charged with the task of identifying them. However, this turns out to be not always easy, especially if we are using phenotypic approaches for identification. A substantial step forward in making the identification of acetic acid bacteria easier was made possible using molecular biological methods, which have been extensively tested since 2000. However, some molecular methods require expensive machines and experienced staff, and moreover the level of their discrimination varies. All these factors must be considered when selecting the most appropriate approach for identifying acetic acid bacteria. With this objective in mind, this review article discusses the benefits and drawbacks of molecular biological methods for identification of acetic acid bacteria, with a focus on the 16S-23S rRNA gene ITS regions and the recently described alternative method for identification of acetic acid bacteria, MALDI-TOF MS.
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Affiliation(s)
- Janja Trček
- Department of Biology, Faculty of Natural Sciences and Mathematics, University of Maribor, Maribor, Slovenia; Faculty of Chemistry and Chemical Engineering, University of Maribor, Maribor, Slovenia.
| | - François Barja
- Microbiology Unit, Department of Botany and Plant Biology, University of Geneva, Jussy-Geneva, Switzerland
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