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Milessi TS, Sandri JP, Arruda PV, Esteves TD, Pinheiro LP, Kumar V, Chandel AK. Role of non-genetically modified or native pentose fermenting microorganisms in establishing viable lignocellulosic biorefineries in the Brazilian context. Crit Rev Biotechnol 2025:1-19. [PMID: 39978937 DOI: 10.1080/07388551.2025.2452628] [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: 07/07/2023] [Revised: 10/16/2024] [Accepted: 11/04/2024] [Indexed: 02/22/2025]
Abstract
Brazil can play a pivotal role in the development of a circular bioeconomy as the country ranks among the top five major agricultural countries in the world producing a foreseeable lignocellulosic biomass from crops, such as sugarcane, soybean, corn, rice, coffee, and eucalyptus. Considering that pentose sugars (C5 sugars) represent 20%-35% of the amount of lignocellulosic biomass components, these sugars have a great potential in the development of carbon neutral economy. From the biomass conversion economic point of view, the conversion of hemicellulose into renewable products with a satisfactory yield is the most needed. However, the biochemical conversion of pentose sugars is challenging due to the scarcity of native pentose sugars fermenting microorganisms. While recent advances in metabolic engineering have been effective in developing a strong molecular chassis for efficient pentose sugars conversion, the yields, productivities, and stability of the genetically modified organisms (GMOs) are major limiting factors for industrial-scale applications. Native lignocellulosic sugars fermenting microorganisms are competent, robust, and inhibitor-tolerant but their lower productivities continue to be a big concern. This article explains the inherent characteristics of native pentose fermenting microorganisms in establishing viable lignocellulosic biorefineries in the Brazilian context, with a special focus on their isolation from Brazilian biodiversity, along with the evaluation of nongenetic engineering techniques to improve strains for biorefinery application.
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Affiliation(s)
- Thais S Milessi
- Department of Chemical Engineering, Federal University of São Carlos, São Carlos, São Paulo, Brazil
- Graduate Program in Energy Engineering, Institute of Natural Resources (IRN), Federal University of Itajubá, Minas Gerais, Brazil
- Graduate Program of Chemical Engineering, Federal University of São Carlos, São Carlos, São Paulo, Brazil
| | - Juliana P Sandri
- Graduate Program of Chemical Engineering, Federal University of São Carlos, São Carlos, São Paulo, Brazil
| | - Priscila V Arruda
- Department of Bioprocess Engineering and Biotechnology - COEBB/TD, Federal University of Technology of Paraná, Toledo, Paraná, Brazil
| | - Tayrone D Esteves
- Department of Biotechnology, School of Engineering of Lorena, University of São Paulo (USP), Estrada Municipal do Campinho, Lorena, São Paulo, Brazil
| | - Luisa P Pinheiro
- Graduate Program in Energy Engineering, Institute of Natural Resources (IRN), Federal University of Itajubá, Minas Gerais, Brazil
| | - Vinod Kumar
- School of Water, Energy and Environment, Cranfield University, Cranfield, UK
| | - Anuj K Chandel
- Department of Biotechnology, School of Engineering of Lorena, University of São Paulo (USP), Estrada Municipal do Campinho, Lorena, São Paulo, Brazil
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Adame-Soto PJ, Aréchiga-Carvajal ET, González-Herrera SM, Moreno-Jiménez MR, Rutiaga-Quiñones OM. Characterization of mating type on aroma production and metabolic properties wild Kluyveromyces marxianus yeasts. World J Microbiol Biotechnol 2023; 39:216. [PMID: 37269405 DOI: 10.1007/s11274-023-03659-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 05/22/2023] [Indexed: 06/05/2023]
Abstract
Kluyveromyces marxianus yeasts represent a valuable industry alternative due to their biotechnological potential to produce aromatic compounds. 2-phenylethanol and 2-phenylethylacetate are significant aromatic compounds widely used in food and cosmetics due to their pleasant odor. Natural obtention of these compounds increases their value, and because of this, bioprocesses such as de novo synthesis has become of great significance. However, the relationship between aromatic compound production and yeast's genetic diversity has yet to be studied. In the present study, the analysis of the genetic diversity in K. marxianus isolated from the natural fermentation of Agave duranguensis for Mezcal elaboration is presented. The results of strains in a haploid and diploid state added to the direct relationship between the mating type locus MAT with metabolic characteristics are studied. Growth rate, assimilate carbohydrates (glucose, lactose, and chicory inulin), and the production of aromatic compounds such as ethyl acetate, isoamyl acetate, isoamyl alcohol, 2-phenylethyl butyrate and phenylethyl propionate and the diversity in terms of the output of 2-phenylethanol and 2-phenylethylacetate by de novo synthesis were determinate, obtaining maximum concentrations of 51.30 and 60.39 mg/L by ITD0049 and ITD 0136 yeasts respectively.
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Affiliation(s)
- P J Adame-Soto
- Department of Chemical and Biochemical Engineering, National Technological Institute of Mexico, Technological Institute of Durango, Felipe Pescador 1803 Ote, Colonia Nueva Vizcaya, 34080, Durango, Dgo, Mexico
| | - E T Aréchiga-Carvajal
- Genetic Manipulation Unit of the Mycology and Phytopathology Laboratory, Department of Microbiology, and Immunology, Faculty of Biological Sciences, Unit C Ciudad Universitaria, Autonomous University of Nuevo León, 66451, San Nicolás de Los Garza, Nuevo León, Mexico
| | - S M González-Herrera
- Department of Chemical and Biochemical Engineering, National Technological Institute of Mexico, Technological Institute of Durango, Felipe Pescador 1803 Ote, Colonia Nueva Vizcaya, 34080, Durango, Dgo, Mexico
| | - M R Moreno-Jiménez
- Department of Chemical and Biochemical Engineering, National Technological Institute of Mexico, Technological Institute of Durango, Felipe Pescador 1803 Ote, Colonia Nueva Vizcaya, 34080, Durango, Dgo, Mexico
| | - O M Rutiaga-Quiñones
- Department of Chemical and Biochemical Engineering, National Technological Institute of Mexico, Technological Institute of Durango, Felipe Pescador 1803 Ote, Colonia Nueva Vizcaya, 34080, Durango, Dgo, Mexico.
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Monteiro de Oliveira P, Aborneva D, Bonturi N, Lahtvee PJ. Screening and Growth Characterization of Non-conventional Yeasts in a Hemicellulosic Hydrolysate. Front Bioeng Biotechnol 2021; 9:659472. [PMID: 33996782 PMCID: PMC8116571 DOI: 10.3389/fbioe.2021.659472] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 03/30/2021] [Indexed: 11/17/2022] Open
Abstract
Lignocellulosic biomass is an attractive raw material for the sustainable production of chemicals and materials using microbial cell factories. Most of the existing bioprocesses focus on second-generation ethanol production using genetically modified Saccharomyces cerevisiae, however, this microorganism is naturally unable to consume xylose. Moreover, extensive metabolic engineering has to be carried out to achieve high production levels of industrially relevant building blocks. Hence, the use of non-Saccharomyces species, or non-conventional yeasts, bearing native metabolic routes, allows conversion of a wide range of substrates into different products, and higher tolerance to inhibitors improves the efficiency of biorefineries. In this study, nine non-conventional yeast strains were selected and screened on a diluted hemicellulosic hydrolysate from Birch. Kluyveromyces marxianus CBS 6556, Scheffersomyces stipitis CBS 5773, Lipomyces starkeyi DSM 70295, and Rhodotorula toruloides CCT 7815 were selected for further characterization, where their growth and substrate consumption patterns were analyzed under industrially relevant substrate concentrations and controlled environmental conditions in bioreactors. K. marxianus CBS 6556 performed poorly under higher hydrolysate concentrations, although this yeast was determined among the fastest-growing yeasts on diluted hydrolysate. S. stipitis CBS 5773 demonstrated a low growth and biomass production while consuming glucose, while during the xylose-phase, the specific growth and sugar co-consumption rates were among the highest of this study (0.17 h–1 and 0.37 g/gdw*h, respectively). L. starkeyi DSM 70295 and R. toruloides CCT 7815 were the fastest to consume the provided sugars at high hydrolysate conditions, finishing them within 54 and 30 h, respectively. R. toruloides CCT 7815 performed the best of all four studied strains and tested conditions, showing the highest specific growth (0.23 h–1), substrate co-consumption (0.73 ± 0.02 g/gdw*h), and xylose consumption (0.22 g/gdw*h) rates. Furthermore, R. toruloides CCT 7815 was able to produce 10.95 ± 1.37 gL–1 and 1.72 ± 0.04 mgL–1 of lipids and carotenoids, respectively, under non-optimized cultivation conditions. The study provides novel information on selecting suitable host strains for biorefinery processes, provides detailed information on substrate consumption patterns, and pinpoints to bottlenecks possible to address using metabolic engineering or adaptive evolution experiments.
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Affiliation(s)
| | - Daria Aborneva
- Institute of Technology, University of Tartu, Tartu, Estonia
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Wang Y, Zhang Z, Lu X, Zong H, Zhuge B. Genetic engineering of an industrial yeast Candida glycerinogenes for efficient production of 2-phenylethanol. Appl Microbiol Biotechnol 2020; 104:10481-10491. [PMID: 33180170 DOI: 10.1007/s00253-020-10991-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 10/23/2020] [Accepted: 10/31/2020] [Indexed: 10/23/2022]
Abstract
Microbial cell factories offer an economic approach for synthesizing "natural'" aromatic flavor compounds. During their fermentation process, the inefficient synthesis pathway and product cytotoxicity are the major barriers to the high-level production. This study combined metabolic engineering and tolerance engineering strategies to maximize the valuable rose-smell 2-phenylethanol (2-PE) production in Candida glycerinogenes, a GRAS diploid industrial yeast. Firstly, 2-PE metabolic networks involved in Ehrlich pathway were stepwise rewired using metabolic engineering, including the following: (1) overexpressing L-phenylalanine permease Aap9 enhanced precursor uptake; (2) overexpressing enzymes (aminotransferase Aro9 and decarboxylase Aro10) of Ehrlich pathway increased catalytic efficiency; and (3) disrupting the formation of by-product phenylacetate catalyzed by Ald2 and Ald3 maximized the metabolic flux toward 2-PE. Then, tolerance engineering was applied by overexpression of a stress-inducible gene SLC1 in the metabolically engineered strain to further enhance 2-PE production. Combining these two approaches finally resulted in 5.0 g/L 2-PE in shake flasks, with productivity reaching 0.21 g/L/h, which were increased by 38.9% and 177% compared with those of the non-engineered strain, respectively. The 2-PE yield of this engineered strain was 0.71 g/g L-phenylalanine, corresponding to 95.9% of theoretical yield. This study provides a reference to efficiently engineering of microbial cell factories for other valuable aromatic compounds. KEY POINTS: • Metabolic engineering improved 2-PE biosynthesis. • Tolerance engineering alleviated product inhibition, contributing to 2-PE production. • The best strain produced 5.0 g/L 2-PE with 0.959 mol/mol yield and high productivity.
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Affiliation(s)
- Yuqin Wang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,Research Centre of Industrial Microbiology, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Zhongyuan Zhang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,Research Centre of Industrial Microbiology, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Xinyao Lu
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China. .,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China. .,Research Centre of Industrial Microbiology, School of Biotechnology, Jiangnan University, Wuxi, China.
| | - Hong Zong
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,Research Centre of Industrial Microbiology, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Bin Zhuge
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China. .,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China. .,Research Centre of Industrial Microbiology, School of Biotechnology, Jiangnan University, Wuxi, China.
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