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Barssoum R, Al Kassis G, Nassereddine R, Saad J, El Ghoul M, Abboud J, Fayad N, Dupoiron S, Cescut J, Aceves-Lara CA, Fillaudeau L, Awad MK. Biochemical limitations of Bacillus thuringiensis based biopesticides production in a wheat bran culture medium. Res Microbiol 2023; 174:104043. [PMID: 36764472 DOI: 10.1016/j.resmic.2023.104043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 02/11/2023]
Abstract
Bacillus thuringiensis, a gram-positive sporulating bacteria found in the environment, produces, during its sporulation phase, crystals responsible for its insecticidal activity, constituted of an assembly of pore-forming δ-endotoxins. This has led to its use as a biopesticide, an eco-friendly alternative to harmful chemical pesticides. To minimize production cost, one endemic Bacillus thuringiensis sv. kurstaki (Btk) strain Lip, isolated from Lebanese soil, was cultivated in a wheat bran (WB) based medium (IPM-4-Citrus project EC n° 734921). With the aim of studying the biochemical limitations of Btk biopesticide production in a wheat bran based medium, the WB was sieved into different granulometries, heat treated, inoculated with Btk Lip at flask scale, then filtered and separated into an insoluble and a permeate fractions. Several biochemical analyses, ie. bio performances, starch, elemental composition, total nitrogen and ashes, were then conducted on both fractions before and after culture. On a morphological level, two populations were distinguished, the fine starch granules and the coarse lignocellulosic particles. The biochemical analyses showed that both the raw and sieved WB have a similar proteins content (0.115 g/gdm WB), water content (0.116 g/gdm WB) and elemental composition (carbon: 45%, oxygen: 37%, nitrogen: 3%, hydrogen: 6%, ashes: 5%). The starch content was 17%, 14% and 34% and the fermentable fraction was estimated to 32.1%, 36.1% and 51.1% respectively for classes 2, 3 and 4. Both the elemental composition and Kjeldahl analyses showed that the nitrogen is the limiting nutrient of the culture.
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Affiliation(s)
- Rita Barssoum
- Saint-Joseph University of Beirut, UR- EGP, Functional Genomic and Proteomic Laboratory, Faculty of Sciences, Mar Roukos- Dekwaneh, B.P. 17-5208, Mar Mikhael, Beirut, 1104 2020, Lebanon; Toulouse Biotechnology Institute, Bio & Chemical Engineering, Université de Toulouse- (CNRS UMR5504- INRAE UMR792, INSA), 135 Avenue de Rangueil, 31077 Toulouse, Cedex 04, France.
| | - Gabrielle Al Kassis
- Saint-Joseph University of Beirut, UR- EGP, Functional Genomic and Proteomic Laboratory, Faculty of Sciences, Mar Roukos- Dekwaneh, B.P. 17-5208, Mar Mikhael, Beirut, 1104 2020, Lebanon.
| | - Rayan Nassereddine
- Saint-Joseph University of Beirut, UR- EGP, Functional Genomic and Proteomic Laboratory, Faculty of Sciences, Mar Roukos- Dekwaneh, B.P. 17-5208, Mar Mikhael, Beirut, 1104 2020, Lebanon.
| | - Jihane Saad
- Saint-Joseph University of Beirut, UR- EGP, Functional Genomic and Proteomic Laboratory, Faculty of Sciences, Mar Roukos- Dekwaneh, B.P. 17-5208, Mar Mikhael, Beirut, 1104 2020, Lebanon; Toulouse White Biotechnology (INRAE UMS1337, CNRS UMS3582, INSA), INSA-Toulouse, 135 Avenue de Rangueil 31077, Toulouse Cedex 04, France.
| | - Meriem El Ghoul
- Pharmacological Laboratory Médis, Route de Tunis Km 7-BP 206, Nabeul 8000, Tunisia.
| | - Joanna Abboud
- Saint-Joseph University of Beirut, UR- EGP, Functional Genomic and Proteomic Laboratory, Faculty of Sciences, Mar Roukos- Dekwaneh, B.P. 17-5208, Mar Mikhael, Beirut, 1104 2020, Lebanon; Toulouse White Biotechnology (INRAE UMS1337, CNRS UMS3582, INSA), INSA-Toulouse, 135 Avenue de Rangueil 31077, Toulouse Cedex 04, France.
| | - Nancy Fayad
- Saint-Joseph University of Beirut, UR- EGP, Functional Genomic and Proteomic Laboratory, Faculty of Sciences, Mar Roukos- Dekwaneh, B.P. 17-5208, Mar Mikhael, Beirut, 1104 2020, Lebanon; Multi-Omics Laboratory, School of Pharmacy, Lebanese American University, P.O. Box 36, Byblos 1401, Lebanon.
| | - Stéphanie Dupoiron
- Toulouse White Biotechnology (INRAE UMS1337, CNRS UMS3582, INSA), INSA-Toulouse, 135 Avenue de Rangueil 31077, Toulouse Cedex 04, France.
| | - Julien Cescut
- Toulouse White Biotechnology (INRAE UMS1337, CNRS UMS3582, INSA), INSA-Toulouse, 135 Avenue de Rangueil 31077, Toulouse Cedex 04, France.
| | - César Arturo Aceves-Lara
- Toulouse Biotechnology Institute, Bio & Chemical Engineering, Université de Toulouse- (CNRS UMR5504- INRAE UMR792, INSA), 135 Avenue de Rangueil, 31077 Toulouse, Cedex 04, France.
| | - Luc Fillaudeau
- Toulouse Biotechnology Institute, Bio & Chemical Engineering, Université de Toulouse- (CNRS UMR5504- INRAE UMR792, INSA), 135 Avenue de Rangueil, 31077 Toulouse, Cedex 04, France.
| | - Mireille Kallassy Awad
- Saint-Joseph University of Beirut, UR- EGP, Functional Genomic and Proteomic Laboratory, Faculty of Sciences, Mar Roukos- Dekwaneh, B.P. 17-5208, Mar Mikhael, Beirut, 1104 2020, Lebanon.
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Rodríguez-Romero JDJ, Aceves-Lara CA, Silva CF, Gschaedler A, Amaya-Delgado L, Arrizon J. 2-Phenylethanol and 2-phenylethylacetate production by nonconventional yeasts using tequila vinasses as a substrate. ACTA ACUST UNITED AC 2020; 25:e00420. [PMID: 32025510 PMCID: PMC6997672 DOI: 10.1016/j.btre.2020.e00420] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 01/04/2020] [Accepted: 01/04/2020] [Indexed: 12/14/2022]
Abstract
Yeast species influenced the de novo synthesis of 2-phenylethylacetate. Inhibitory compounds showed a strong influence on cell growth and 2-phenylethylacetate production for the evaluated yeasts. More than a 50 % reduction in the chemical and biochemical oxygen demand was achieved by yeast fermentation.
Vinasses from the tequila industry are wastewaters with highly elevated organic loads. Therefore, to obtain value-added products by yeast fermentations, such as 2-phenylethanol (2-PE) and 2-phenylethylacetate (2-PEA), could be interesting for industrial applications from tequila vinasses. In this study, four yeasts species (Wickerhamomyces anomalus, Candida glabrata, Candida utilis, and Candida parapsilosis) were evaluated with two different chemically defined media and tequila vinasses. Differences in the aroma compounds production were observed depending on the medium and yeast species used. In tequila vinasses, the highest concentration (65 mg/L) of 2-PEA was reached by C. glabrata, the inhibitory compounds decreased biomass production and synthesis of 2-PEA, and biochemical and chemical oxygen demands were reduced by more than 50 %. Tequila vinasses were suitable for the production of 2-phenylethylacetate by the shikimate pathway. A metabolic network was developed to obtain a guideline to improve 2-PE and 2-PEA production using flux balance analysis (FBA).
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Affiliation(s)
- José de Jesús Rodríguez-Romero
- Industrial Biotechnology Department, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C., Jalisco, Mexico
| | - César Arturo Aceves-Lara
- TBI, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France.,TBI (ex.LISBP)-INSA, Toulouse 135 Avenue de Rangueil, 31077, Toulouse, France
| | - Cristina Ferreira Silva
- Department of Biology, Federal University of Lavras, Postal Code 3037, 37200-000, Lavras, MG, Brazil
| | - Anne Gschaedler
- Industrial Biotechnology Department, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C., Jalisco, Mexico
| | - Lorena Amaya-Delgado
- Industrial Biotechnology Department, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C., Jalisco, Mexico
| | - Javier Arrizon
- Industrial Biotechnology Department, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C., Jalisco, Mexico
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Donoso-Bravo A, Mailier J, Martin C, Rodríguez J, Aceves-Lara CA, Vande Wouwer A. Model selection, identification and validation in anaerobic digestion: a review. Water Res 2011; 45:5347-64. [PMID: 21920578 DOI: 10.1016/j.watres.2011.08.059] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Revised: 08/26/2011] [Accepted: 08/29/2011] [Indexed: 05/16/2023]
Abstract
Anaerobic digestion enables waste (water) treatment and energy production in the form of biogas. The successful implementation of this process has lead to an increasing interest worldwide. However, anaerobic digestion is a complex biological process, where hundreds of microbial populations are involved, and whose start-up and operation are delicate issues. In order to better understand the process dynamics and to optimize the operating conditions, the availability of dynamic models is of paramount importance. Such models have to be inferred from prior knowledge and experimental data collected from real plants. Modeling and parameter identification are vast subjects, offering a realm of approaches and methods, which can be difficult to fully understand by scientists and engineers dedicated to the plant operation and improvements. This review article discusses existing modeling frameworks and methodologies for parameter estimation and model validation in the field of anaerobic digestion processes. The point of view is pragmatic, intentionally focusing on simple but efficient methods.
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Aceves-Lara CA, Trably E, Bastidas-Oyenadel JR, Ramirez I, Latrille E, Steyer JP. [Bioenergy production from waste: examples of biomethane and biohydrogen]. ACTA ACUST UNITED AC 2008; 202:177-89. [PMID: 18980740 DOI: 10.1051/jbio:2008020] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
This new century addresses several environmental challenges among which distribution of drinking water, global warming and availability of novel renewable energy sources to substitute for fossil fuels are of utmost importance. The last two concerns are closely related because the major part of carbon dioxide (CO(2)), considered as the main cause of the greenhouse effect, is widely produced from fossil fuel combustion. Renewable energy sources fully balanced in CO(2) are therefore of special interest, especially the issue of biological production from organic wastes. Among the possibilities of bioenergy production from wastes, two approaches are particularly interesting: The first one is relatively old and related to the production of biomethane by anaerobic digestion while the second one, more recent and innovative, relies on biohydrogen production by microbial ecosystems.
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Affiliation(s)
- César Arturo Aceves-Lara
- INRA, UR50, Laboratoire de Biotechnologie de l'Environnement, Avenue des Etangs, 11100 Narbonne, France
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Aceves-Lara CA, Aguilar-Garnica E, Alcaraz-González V, González-Reynoso O, Steyer JP, Dominguez-Beltran JL, González-Alvarez V. Kinetic parameters estimation in an anaerobic digestion process using successive quadratic programming. Water Sci Technol 2005; 52:419-26. [PMID: 16180459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
In this work, an optimization method is implemented in an anaerobic digestion model to estimate its kinetic parameters and yield coefficients. This method combines the use of advanced state estimation schemes and powerful nonlinear programming techniques to yield fast and accurate estimates of the aforementioned parameters. In this method, we first implement an asymptotic observer to provide estimates of the non-measured variables (such as biomass concentration) and good guesses for the initial conditions of the parameter estimation algorithm. These results are then used by the successive quadratic programming (SQP) technique to calculate the kinetic parameters and yield coefficients of the anaerobic digestion process. The model, provided with the estimated parameters, is tested with experimental data from a pilot-scale fixed bed reactor treating raw industrial wine distillery wastewater. It is shown that SQP reaches a fast and accurate estimation of the kinetic parameters despite highly noise corrupted experimental data and time varying inputs variables. A statistical analysis is also performed to validate the combined estimation method. Finally, a comparison between the proposed method and the traditional Marquardt technique shows that both yield similar results; however, the calculation time of the traditional technique is considerable higher than that of the proposed method.
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Affiliation(s)
- C A Aceves-Lara
- Department of Chemical Engineering, University of Guadalajara, M. Garcia Barragán 1451, 44430, Guadalajara, Jalisco, Mexico
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