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González-Rojo S, Paniagua-García AI, Díez-Antolínez R. Biotransformation of starch-based wastewater into bioplastics: Optimization of poly(3-hydroxybutyrate) production by Cupriavidus necator DSM 545 using potato wastewater hydrolysate. WATER RESEARCH 2023; 247:120766. [PMID: 37897996 DOI: 10.1016/j.watres.2023.120766] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 10/16/2023] [Accepted: 10/19/2023] [Indexed: 10/30/2023]
Abstract
Biodegradable biopolymers, such as polyhydroxyalkanoates (PHAs), have emerged as an alternative to petrochemical-based plastics. The present work explores the production of PHAs based on the biotransformation of potato processing wastewater and addresses two different strategies for PHA recovery. To this end, culture conditions for PHA synthesis by Cupriavidus necator DSM 545 were optimized on a laboratory scale using a response surface methodology-based experimental design. Optimal conditions rendered a PHB, poly(3-hydroxybutyrate), accumulation of 83.74 ± 2.37 % (5.1 ± 0.2 gL-1), a 1.4-fold increase compared to the initial conditions. Moreover, polymer extraction with non-halogenated agent improved PHB recovery compared to chloroform method (PHB yield up to 78.78 ± 0.57 %), while maintaining PHB purity. (99.83 ± 4.95 %). Overall, the present work demonstrated the potential valorization of starch-based wastewater by biotransformation into PHBs, a high value-added product, and showed that recovery approaches more eco-friendly than the traditional treatments could be applied to PHB recovery to some extent.
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Affiliation(s)
- S González-Rojo
- Centro de Biocombustibles y Bioproductos, Instituto Tecnológico Agrario de Castilla y León (ITACyL), Polígono Agroindustrial del Órbigo p. 2-6, Villarejo de Órbigo 24358, León, Spain.
| | - A I Paniagua-García
- Centro de Biocombustibles y Bioproductos, Instituto Tecnológico Agrario de Castilla y León (ITACyL), Polígono Agroindustrial del Órbigo p. 2-6, Villarejo de Órbigo 24358, León, Spain
| | - R Díez-Antolínez
- Centro de Biocombustibles y Bioproductos, Instituto Tecnológico Agrario de Castilla y León (ITACyL), Polígono Agroindustrial del Órbigo p. 2-6, Villarejo de Órbigo 24358, León, Spain
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Pinto-Ibieta F, Cea M, Serrano A, Felissia FE, Area MC, Cabrera F, Ciudad G. Toward the use of mixed microbial cultures for the biological production of adipic and levulinic acid. Front Microbiol 2023; 14:1224543. [PMID: 37448576 PMCID: PMC10338001 DOI: 10.3389/fmicb.2023.1224543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 06/07/2023] [Indexed: 07/15/2023] Open
Abstract
Biological synthesis of high added-value compounds like adipic acid (AA), levulinic acid (LA), or polyhydroxybutyrate (PHB) using pure culture has been separately reported. However, pure culture requires sterile conditions and the use of specific carbon sources resulting in high operating costs. Different alternatives based on the use of mixed microbial cultures (MMC) have been explored to resolve this problem. MMC have been widely reported for the production of PHB, but scarcely reported for LA production and never for AA synthesis. This work presents a novel strategy for the co-production of AA LA, and PHB using MMC. The strategy consists in selecting an MMC producer of AA, LA and PHB from an inoculum obtained from a wastewater treatment plant, which is then subjected to the feast and famine culture strategy in a sequential batch reactor, coupled with a batch reactor step to enhance the accumulation of AA and LA. The results showed that the MMC could produce a 16 ± 2, 23 ± 1 and 5 ± %1 (g compound/g volatile solids) of AA, LA and PHB, respectively, using a non-fermented residual biomass rich in pentose, namely synthetic hemicellulose hydrolysate (SHH) as the carbon source. These results contribute to generating future research to better understand and optimise the biosynthesis of these compounds by MMC.
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Affiliation(s)
- Fernanda Pinto-Ibieta
- Departamento de Procesos Industriales, Facultad de Ingeniería, Universidad Católica de Temuco, Temuco, Chile
| | - Mara Cea
- Departamento de Ingeniería Química, Universidad de La Frontera, Temuco, Chile
- Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile
| | - Antonio Serrano
- Institute of Water Research, University of Granada, Granada, Spain
- Department of Microbiology, Pharmacy Faculty, University of Granada, Granada, Spain
| | - Fernando E. Felissia
- IMAM, UNaM, CONICET, FCEQYN, Programa de Celulosa y Papel (PROCYP), Posadas, Argentina
| | - María Cristina Area
- IMAM, UNaM, CONICET, FCEQYN, Programa de Celulosa y Papel (PROCYP), Posadas, Argentina
| | - Francisco Cabrera
- Instituto de Ciencias Químicas Aplicadas, Universidad Autónoma de Chile, Temuco, Chile
| | - Gustavo Ciudad
- Departamento de Ingeniería Química, Universidad de La Frontera, Temuco, Chile
- Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile
- Instituto del Medio Ambiente (IMA), Universidad de La Frontera, Temuco, Chile
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Shaw KM, Poh PE, Ho YK, Chan SK, Chew IML. Predicting volatile fatty acid synthesis from palm oil mill effluent on an industrial scale. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Argiz L, Val Del Río Á, Correa-Galeote D, Rodelas B, Mosquera-Corral A. Simplified engineering design towards a competitive lipid-rich effluents valorization. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 317:115433. [PMID: 35751251 DOI: 10.1016/j.jenvman.2022.115433] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 05/14/2022] [Accepted: 05/26/2022] [Indexed: 06/15/2023]
Abstract
Medium- and long-chain fatty acids and glycerol contained in the oily fraction of many food-industry effluents are excellent candidates to produce biobased high-value triacylglycerides (TAGs) and polyhydroxyalkanoates (PHAs). The typical process configuration for TAGs recovery from lipid-rich streams always includes two steps (culture enrichment plus storage compounds accumulation) whereas, for PHAs production, an additional pretreatment of the substrate for the obtainment of soluble volatile fatty acids (VFAs) is required. To simplify the process, substrate hydrolysis, culture enrichment, and accumulation (TAG and PHA storage) were coupled here in a single sequencing batch reactor (SBR) operated under the double growth limitation strategy (DGL) and fed in pulses with industrial waste fish oil during the whole feast phase. When the SBR was operated in 12 h cycles, it was reached up to 51 wt % biopolymers after only 6 h of feast (TAG:PHA ratio of 50:51; 0.423 CmmolBIOP/CmmolS). Daily storage compound production was observed to be over 25% higher than the reached when enrichment and accumulation stages were carried in separate operational units. Increasing the feast phase length from 6 to 12 h (18 h cycle) negatively affected the DGL strategy performance and hence system storage capacity, which was recovered after also extending the famine phase in the same proportion (24 h cycle). Besides, the carbon influx during the feast phase was identified as a key operational parameter controlling storage compounds production and, together with the C/N ratio, culture selection. The different cycle configurations tested clearly modulated the total fungal abundances without no significant differences in the size of the bacterial populations. Several PHA and TAG producers were found in the mixed culture although the PHA and TAG productions were poorly associated with the increased relative abundances (RAs) of specific operational taxonomic units (OTUs).
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Affiliation(s)
- Lucía Argiz
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Galicia, Spain.
| | - Ángeles Val Del Río
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Galicia, Spain
| | - David Correa-Galeote
- Department of Microbiology, Faculty of Pharmacy, University of Granada, 18001, Granada, Andalucía, Spain; Microbiology and Environmental Technology Section, Department of Microbiology, Faculty of Pharmacy, University of Granada, 18001, Granada, Andalucía, Spain
| | - Belén Rodelas
- Department of Microbiology, Faculty of Pharmacy, University of Granada, 18001, Granada, Andalucía, Spain; Microbiology and Environmental Technology Section, Department of Microbiology, Faculty of Pharmacy, University of Granada, 18001, Granada, Andalucía, Spain
| | - Anuska Mosquera-Corral
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Galicia, Spain
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Samadhiya K, Sangtani R, Nogueira R, Bala K. Insightful Advancement and Opportunities for Microbial Bioplastic Production. Front Microbiol 2022; 12:674864. [PMID: 35058887 PMCID: PMC8763809 DOI: 10.3389/fmicb.2021.674864] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 11/11/2021] [Indexed: 12/28/2022] Open
Abstract
Impetuous urbanization and population growth are driving increased demand for plastics to formulate impeccable industrial and biomedical commodities. The everlasting nature and excruciating waste management of petroleum-based plastics have catered to numerous challenges for the environment. However, just implementing various end-of-life management techniques for assimilation and recycling plastics is not a comprehensive remedy; instead, the extensive reliance on finite resources needs to be reduced for sustainable production and plastic product utilization. Microorganisms, such as bacteria and algae, are explored substantially for their bioplastic production repertoire, thus replacing fossil-based plastics sooner or later. Nevertheless, the utilization of pure microbial cultures has led to various operational and economical complications, opening the ventures for the usage of mixed microbial cultures (MMCs) consisting of bacteria and algae for sustainable production of bioplastic. The current review is primarily focuses on elaborating the bioplastic production capabilities of different bacterial and algal strains, followed by discussing the quintessence of MMCs. The present state-of-the-art of bioplastic, different types of bacterial bioplastic, microalgal biocomposites, operational factors influencing the quality and quantity of bioplastic precursors, embracing the potential of bacteria-algae consortia, and the current global status quo of bioplastic production has been summarized extensively.
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Affiliation(s)
- Kanchan Samadhiya
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology, Indore, India
| | - Rimjhim Sangtani
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology, Indore, India
| | - Regina Nogueira
- Institute for Sanitary Engineering and Waste Management, Leibniz Universitaet Hannover, Hanover, Germany
| | - Kiran Bala
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology, Indore, India
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Cabrera F, Torres-Aravena Á, Pinto-Ibieta F, Campos JL, Jeison D. On-Line Control of Feast/Famine Cycles to Improve PHB Accumulation during Cultivation of Mixed Microbial Cultures in Sequential Batch Reactors. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph182312611. [PMID: 34886335 PMCID: PMC8656583 DOI: 10.3390/ijerph182312611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/22/2021] [Accepted: 11/25/2021] [Indexed: 11/28/2022]
Abstract
Production of polyhydroxyalkanoates (PHA) has generated great interest as building blocks for bioplastic production. Their production using mixed microbial cultures represents an interesting alternative, since it enables the use of organic wastes as a carbon source. Feast/famine strategy is a common way to promote selection of microorganisms with PHA accumulation capacity. However, when using waste sources, changes in substrate concentration are expected, that may affect performance and efficiency of the process. This study showed how the dissolved oxygen level can be used for online control of the cycle time, ensuring that the desired feast/famine ratio is effectively applied. An operation strategy is presented and validated, using sequential batch reactors fed with acetate as the carbon source. Production of polyhydroxybutyrate (PHB) was studied, which is the expected type of PHA to be synthetized when using acetate as substrate. Two reactors were operated by applying the proposed control strategy, to provide F/F ratios of 0.2 and 0.6, respectively. A third reactor was operated with a fixed cycle time, for comparison purposes. Results showed that the reactor that operated at an F/F ratio of 0.6 promoted higher biomass productivity and PHB content, as a result of a better use of available time, preventing unnecessary long famine times. The application of the tested strategy is a simple a reliable way to promote a better performance of feast/famine-based bioreactors involving mixed microbial cultures for PHB production.
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Affiliation(s)
- Francisco Cabrera
- Instituto de Ciencias Químicas Aplicadas, Universidad Autónoma de Chile, Avenida Alemania 01090, Temuco 4810101, Chile;
- Department of Chemical Engineering, Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco 4811230, Chile;
| | - Álvaro Torres-Aravena
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Av. Brasil 2085, Valparaíso 2362803, Chile;
| | - Fernanda Pinto-Ibieta
- Department of Chemical Engineering, Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco 4811230, Chile;
- Departamento de Procesos Industriales, Facultad de Ingeniería, Universidad Católica de Temuco, Avenida Rudecindo Ortega 02950, Temuco 4781312, Chile
| | - José Luis Campos
- Facultad de Ingeniería y Ciencias, Universidad Adolfo Ibáñez, Avda. Padre Hurtado 750, Viña del Mar 2562340, Chile;
| | - David Jeison
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Av. Brasil 2085, Valparaíso 2362803, Chile;
- Correspondence:
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Pinto-Ibieta F, Serrano A, Cea M, Ciudad G, Fermoso FG. Beyond PHA: Stimulating intracellular accumulation of added-value compounds in mixed microbial cultures. BIORESOURCE TECHNOLOGY 2021; 337:125381. [PMID: 34120059 DOI: 10.1016/j.biortech.2021.125381] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/01/2021] [Accepted: 06/02/2021] [Indexed: 06/12/2023]
Abstract
This review compiled and analyzed the operational conditions (dissolved oxygen, feast and famine ratio, sequential batch reactor cycle length, organic loading rate (OLR), pH, C/N, and temperature) established during the feast and famine culture strategy for the mixed microbial cultures (MMC) selection to understand how these variables could affect the synthesis of polyhydroxyalkanoates, polyglucose, triacylglycerides, levulinic acid and adipic acid from non-fermented substrates. According to the reported information, the dissolved oxygen has a greater impact on the type and amount of produced compound. In a lesser extent, the OLR and the cycle length were identified to have an impact on the accumulation of polyhydroxyalkanoates, whose accumulation was favored at lower OLR and longer cycle lengths. Thereby, the information of this work will allow the design of future strategies for the simultaneous accumulation of compounds of interest other than the polyhydroxyalkanoates or understand the operational conditions that would optimize the polyhydroxyalkanoates production.
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Affiliation(s)
- F Pinto-Ibieta
- Departamento de Ingeniería Química, Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Temuco, Chile; Departamento de Procesos Industriales, Facultad de Ingeniería, Universidad Católica de Temuco, Casilla 15-D, Temuco, Chile
| | - A Serrano
- Instituto de la Grasa. Consejo Superior de Investigaciones Científicas. Campus Universitario Pablo de Olavide- Ed. 46, Ctra. de Utrera, km. 1, Seville 41013, Spain.
| | - M Cea
- Departamento de Ingeniería Química, Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Temuco, Chile; Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile
| | - G Ciudad
- Departamento de Ingeniería Química, Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Temuco, Chile; Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile; Instituto del Medio Ambiente (IMA), Universidad de La Frontera, Avenida Francisco Salazar #01145, Temuco, Chile
| | - F G Fermoso
- Instituto de la Grasa. Consejo Superior de Investigaciones Científicas. Campus Universitario Pablo de Olavide- Ed. 46, Ctra. de Utrera, km. 1, Seville 41013, Spain
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Roibás-Rozas A, Val Del Rio A, Hospido A, Mosquera-Corral A. Strategies for the valorisation of a protein-rich saline waste stream into polyhydroxyalkanoates (PHA). BIORESOURCE TECHNOLOGY 2021; 334:124964. [PMID: 33958271 DOI: 10.1016/j.biortech.2021.124964] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 03/04/2021] [Accepted: 03/05/2021] [Indexed: 06/12/2023]
Abstract
Saline Mussels Cooking Wastewater was valorised to produce PHA with Mixed Microbial Cultures (MMC). Due to the high protein content (1.8-5.7 g CODPROT/L), PHA accumulating capacity was below 10%, so several strategies were tested. In the acidification unit, Na(HCO3) was added, increasing protein conversion into Volatile Fatty Acids (VFA) from 10.3% to 69.2% and subsequent PHA accumulation from 6.9 to 14.7%. In the enrichment unit, the incorporation of a settling stage after the feast phase provoked a shift in the proteins' oxidation from the feast to the famine phase, where the nitrogen released in the famine is used by the MMC for growth. This increased the biomass concentration and the tolerated COD (from 1.6 to 4.2 g VSS/L and from 2.2 to 4.38 g COD/L). Finally, varying the proteins/VFA ratio for MMC acclimation to proteins allowed increasing PHA accumulation from 8.8 to 41.5%.
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Affiliation(s)
- Alba Roibás-Rozas
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain.
| | - Angeles Val Del Rio
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain
| | - Almudena Hospido
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain
| | - Anuska Mosquera-Corral
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain
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