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Martínez-Herrera RE, Alemán-Huerta ME, Rutiaga-Quiñones OM, de Luna-Santillana EJ, Elufisan TO. A comprehensive view of Bacillus cereus as a polyhydroxyalkanoate (PHA) producer: A promising alternative to Petroplastics. Process Biochem 2023. [DOI: 10.1016/j.procbio.2023.03.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Dynamics of PHA-Accumulating Bacterial Communities Fed with Lipid-Rich Liquid Effluents from Fish-Canning Industries. Polymers (Basel) 2022; 14:polym14071396. [PMID: 35406269 PMCID: PMC9003127 DOI: 10.3390/polym14071396] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 03/22/2022] [Accepted: 03/25/2022] [Indexed: 02/04/2023] Open
Abstract
The biosynthesis of polyhydroxyalkanoates (PHAs) from industrial wastes by mixed microbial cultures (MMCs) enriched in PHA-accumulating bacteria is a promising technology to replace petroleum-based plastics. However, the populations’ dynamics in the PHA-accumulating MMCs are not well known. Therefore, the main objective of this study was to address the shifts in the size and structure of the bacterial communities in two lab-scale sequencing batch reactors (SBRs) fed with fish-canning effluents and operated under non-saline (SBR-N, 0.5 g NaCl/L) or saline (SBR-S, 10 g NaCl/L) conditions, by using a combination of quantitative PCR and Illumina sequencing of bacterial 16S rRNA genes. A double growth limitation (DGL) strategy, in which nitrogen availability was limited and uncoupled to carbon addition, strongly modulated the relative abundances of the PHA-accumulating bacteria, leading to an increase in the accumulation of PHAs, independently of the saline conditions (average 9.04 wt% and 11.69 wt%, maximum yields 22.03 wt% and 26.33% SBR-N and SBR-S, respectively). On the other hand, no correlations were found among the PHAs accumulation yields and the absolute abundances of total Bacteria, which decreased through time in the SBR-N and did not present statistical differences in the SBR-S. Acinetobacter, Calothrix, Dyella, Flavobacterium, Novosphingobium, Qipengyuania, and Tsukamurella were key PHA-accumulating genera in both SBRs under the DGL strategy, which was revealed as a successful tool to obtain a PHA-enriched MMC using fish-canning effluents.
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Pérez‐Fonseca AA, Herrera‐Carmona VS, Gonzalez‐García Y, Martín del Campo AS, González‐López ME, Ramírez‐Arreola DE, Robledo‐Ortíz JR. Influence of the blending method over the thermal and mechanical properties of biodegradable polylactic acid/polyhydroxybutyrate blends and their wood biocomposites. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5359] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Aida A. Pérez‐Fonseca
- Departamento de Ingeniería Química Universidad de Guadalajara Guadalajara Jalisco Mexico
| | | | | | | | | | | | - Jorge R. Robledo‐Ortíz
- Departamento de Madera, Celulosa y Papel Universidad de Guadalajara Zapopan Jalisco Mexico
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Martínez-Herrera RE, Alemán-Huerta ME, Flores-Rodríguez P, Almaguer-Cantú V, Valencia-Vázquez R, Rosas-Flores W, Medrano-Roldán H, Ochoa-Martínez LA, Rutiaga-Quiñones OM. Utilization of Agave durangensis leaves by Bacillus cereus 4N for polyhydroxybutyrate (PHB) biosynthesis. Int J Biol Macromol 2021; 175:199-208. [PMID: 33548315 DOI: 10.1016/j.ijbiomac.2021.01.167] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 01/07/2021] [Accepted: 01/25/2021] [Indexed: 02/06/2023]
Abstract
Lignocellulosic wastes may provide a means to economize polyhydroxybutyrate (PHB) production. This study has proposed the use of Agave durangensis leaves obtained from the artisanal mezcal industry as a novel substrate for this aim. Results revealed an increase in PHB biosynthesis (0.32 g/L) and improvement in %PHB (16.79-19.51%) by Bacillus cereus 4N when A. durangensis leaves used as carbon source were physically pre-treated by ultrasound for 30 min (ADL + US30') and thermally pre-treated (ADL + Q). Chemical analyses and SEM studies revealed compositional and morphological changes when A. durangensis leaves were physically pre-treated. Also, elemental analysis of growth media showed that carbon/nitrogen ratios of 14-21, and low nitrogen, hydrogen, and protein content were well-suited for PHB biosynthesis. Confocal microscopy revealed morphological changes in the bacterial cell and carbonosome structure under the influence of different substrates. Finally, Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC) analyses showed that homopolymeric PHB with a high thermal-resistance (271.94-272.89 °C) was produced. Therefore, the present study demonstrates the potential use of physically pre-treated A. durangensis leaves to produce PHB. These results promote the development of a circular economy in Mexico, where lignocellulosic wastes can be employed to produce value-added biotechnological products.
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Affiliation(s)
- Raul E Martínez-Herrera
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Instituto de Biotecnología, Av. Pedro de Alba y Manuel L. Barragán s/n., C. P. 66455 San Nicolás de los Garza, Nuevo León, Mexico.
| | - María E Alemán-Huerta
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Instituto de Biotecnología, Av. Pedro de Alba y Manuel L. Barragán s/n., C. P. 66455 San Nicolás de los Garza, Nuevo León, Mexico.
| | - Paola Flores-Rodríguez
- Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional, (CIIDIR) IPN Unidad Durango, Laboratorio de Bioelectrónica, Calle Sigma 119, Fraccionamiento 20 de Noviembre II, C. P. 34220 Durango, Durango, Mexico
| | - Verónica Almaguer-Cantú
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Instituto de Biotecnología, Av. Pedro de Alba y Manuel L. Barragán s/n., C. P. 66455 San Nicolás de los Garza, Nuevo León, Mexico.
| | - Roberto Valencia-Vázquez
- Tecnológico Nacional de México/IT de Durango, Departamento de Ingenierías Química y Bioquímica, Felipe Pescador 1803 Ote, Colonia Nueva Vizcaya, C. P. 34080 Durango, Durango, Mexico
| | - Walfred Rosas-Flores
- Tecnológico Nacional de México/IT de Durango, Departamento de Ingenierías Química y Bioquímica, Felipe Pescador 1803 Ote, Colonia Nueva Vizcaya, C. P. 34080 Durango, Durango, Mexico.
| | - Hiram Medrano-Roldán
- Tecnológico Nacional de México/IT de Durango, Departamento de Ingenierías Química y Bioquímica, Felipe Pescador 1803 Ote, Colonia Nueva Vizcaya, C. P. 34080 Durango, Durango, Mexico
| | - L Araceli Ochoa-Martínez
- Tecnológico Nacional de México/IT de Durango, Departamento de Ingenierías Química y Bioquímica, Felipe Pescador 1803 Ote, Colonia Nueva Vizcaya, C. P. 34080 Durango, Durango, Mexico.
| | - O Miriam Rutiaga-Quiñones
- Tecnológico Nacional de México/IT de Durango, Departamento de Ingenierías Química y Bioquímica, Felipe Pescador 1803 Ote, Colonia Nueva Vizcaya, C. P. 34080 Durango, Durango, Mexico.
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Gallardo‐Cervantes M, González‐García Y, Pérez‐Fonseca AA, González‐López ME, Manríquez‐González R, Rodrigue D, Robledo‐Ortíz JR. Biodegradability and improved mechanical performance of polyhydroxyalkanoates/agave fiber biocomposites compatibilized by different strategies. J Appl Polym Sci 2020. [DOI: 10.1002/app.50182] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
| | | | | | | | | | - Denis Rodrigue
- Department of Chemical Engineering and CERMA Université Laval Quebec City Quebec Canada
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