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Branduardi P, Barroso L, Dato L, Louis EJ, Porro D. Molecular Tools for Leveraging the Potential of the Acid-Tolerant Yeast Zygosaccharomyces bailii as Cell Factory. Methods Mol Biol 2022; 2513:179-204. [PMID: 35781206 DOI: 10.1007/978-1-0716-2399-2_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Microorganisms offer a tremendous potential as cell factories, and they are indeed been used by humans since the previous centuries for biotransformations. Among them, yeasts combine the advantage of a unicellular state with a eukaryotic organization. Moreover, in the era of biorefineries, their biodiversity can offer solutions to specific process constraints. Zygosaccharomyces bailii, an ascomycete budding yeast, is widely known for its peculiar tolerance to different stresses, among which are organic acids. Moreover, the recent reclassification of the species, including diverse hybrids, is further expanding both fundamental and applied interests. It is therefore reasonable that despite the possibility to apply with this yeast some of the molecular tools and protocols routinely used to manipulate Saccharomyces cerevisiae, adjustments and optimizations are necessary. Here we describe in detail the methods for determining chromosome number, size, and aneuploidy, transformation, classical target gene disruption or gene integration, and designing of episomal expression plasmids helpful for engineering the yeast Z. bailii .
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Affiliation(s)
- Paola Branduardi
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy.
| | - Liliane Barroso
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
- Department of Genetics & Genome Biology, University of Leicester, Leicester, UK
| | - Laura Dato
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Edward J Louis
- Department of Genetics & Genome Biology, University of Leicester, Leicester, UK
| | - Danilo Porro
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
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2
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Solieri L. The revenge of Zygosaccharomyces yeasts in food biotechnology and applied microbiology. World J Microbiol Biotechnol 2021; 37:96. [PMID: 33969449 DOI: 10.1007/s11274-021-03066-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 04/28/2021] [Indexed: 12/01/2022]
Abstract
Non-conventional yeasts refer to a huge and still poorly explored group of species alternative to the well-known model organism Saccharomyces cerevisiae. Among them, Zygosaccharomyces rouxii and the sister species Zygosaccharomyces bailii are infamous for spoiling food and beverages even in presence of several food preservatives. On the other hand, their capability to cope with a wide range of process conditions makes these yeasts very attractive factories (the so-called "ZygoFactories") for bio-converting substrates poorly permissive for the growth of other species. In balsamic vinegar Z. rouxii is the main yeast responsible for converting highly concentrated sugars into ethanol, with a preference for fructose over glucose (a trait called fructophily). Z. rouxii has also attracted much attention for the ability to release important flavor compounds, such as fusel alcohols and the derivatives of 4-hydroxyfuranone, which markedly contribute to fragrant and smoky aroma in soy sauce. While Z. rouxii was successfully proposed in brewing for producing low ethanol beer, Z. bailii is promising for lactic acid and bioethanol production. Recently, several research efforts exploited omics tools to pinpoint the genetic bases of distinctive traits in "ZygoFactories", like fructophily, tolerance to high concentrations of sugars, lactic acid and salt. Here, I provided an overview of Zygosaccharomyces industrially relevant phenotypes and summarized the most recent findings in disclosing their genetic bases. I suggest that the increasing number of genomes available for Z. rouxii and other Zygosaccharomyces relatives, combined with recently developed genetic engineering toolkits, will boost the applications of these yeasts in biotechnology and applied microbiology.
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Affiliation(s)
- L Solieri
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Amendola 2, 42122, Reggio Emilia, Italy.
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Singh RS, Singh T, Larroche C. Biotechnological applications of inulin-rich feedstocks. BIORESOURCE TECHNOLOGY 2019; 273:641-653. [PMID: 30503580 DOI: 10.1016/j.biortech.2018.11.031] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 11/05/2018] [Accepted: 11/08/2018] [Indexed: 06/09/2023]
Abstract
Inulin is a naturally occurring second largest storage polysaccharide with a wide range of applications in pharmaceutical and food industries. It is a robust polysaccharide which consists of a linear chain of β-2, 1-linked-d-fructofuranose molecules terminated with α-d-glucose moiety at the reducing end. It is present in tubers, bulbs and tuberous roots of more than 36,000 plants belonging to both monocotyledonous and dicotyledonous families. Jerusalem artichoke, chicory, dahlia, asparagus, etc. are important inulin-rich plants. Inulin is a potent substrate and inducer for the production of inulinases. Inulin/inulin-rich feedstocks can be used for the production of fructooligosaccharides and high-fructose syrup. Additionally, inulin-rich feedstocks can also be exploited for the production of other industrially important products like acetone, butanol, bioethanol, single cell proteins, single cell oils, 2, 3-butanediol, sorbitol, mannitol, etc. Current review highlights the biotechnological potential of inulin-rich feedstocks for the production of various industrially important products.
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Affiliation(s)
- R S Singh
- Carbohydrate and Protein Biotechnology Laboratory, Department of Biotechnology, Punjabi University, Patiala 147 002, Punjab, India.
| | - Taranjeet Singh
- Carbohydrate and Protein Biotechnology Laboratory, Department of Biotechnology, Punjabi University, Patiala 147 002, Punjab, India
| | - Christian Larroche
- Université Clermont Auvergne, Institut Pascal, UMR, CNRS 6602, and Labex, IMobS3, 4 Avenue Blaise Pascal, TSA 60026, CS 60026, F-63178 Aubiere Cedex, France
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Lin J, Yi X, Zhuang Y. Medium optimization based on comparative metabolomic analysis of chicken embryo fibroblast DF-1 cells. RSC Adv 2019; 9:27369-27377. [PMID: 35529190 PMCID: PMC9070647 DOI: 10.1039/c9ra05128g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 08/15/2019] [Indexed: 12/03/2022] Open
Abstract
Chicken embryo fibroblast DF-1 cells are increasingly being used in the production of avian virus vaccines. However, the relatively low proliferative capacity does not meet the requirements of industrial production. In this study, we attempted to improve the proliferative capacity of DF-1 cells. The results of intracellular metabolomics showed that 28 types of metabolites could play roles in DF-1 cell growth based on the variance and timing analysis of intracellular metabolites from DF-1 cells grown in two media with distinct growth difference, DMEM/F12 (1 : 1) and DMEM. By examining the differences in the components in the two media, DOE was used to screen and optimize the growth medium for DF-1 cells. The maximum cell density was 40.72% higher, and the infectious bursal disease virus (IBDV) titer was 2.68 times higher, in the optimized medium than in the control. This study proposes a complete solution from metabolomics to media optimization. This study proposes a medium optimal method based on DOE methodology and metabolomics of chicken embryo fibroblasts DF-1 cells.![]()
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Affiliation(s)
- Jia Lin
- State Key Laboratory of Bioreactor Engineering
- School of Bioengineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Xiaoping Yi
- State Key Laboratory of Bioreactor Engineering
- School of Bioengineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yingping Zhuang
- State Key Laboratory of Bioreactor Engineering
- School of Bioengineering
- East China University of Science and Technology
- Shanghai 200237
- China
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5
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Kuanyshev N, Adamo GM, Porro D, Branduardi P. The spoilage yeastZygosaccharomyces bailii: Foe or friend? Yeast 2017; 34:359-370. [DOI: 10.1002/yea.3238] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 05/12/2017] [Accepted: 05/15/2017] [Indexed: 12/30/2022] Open
Affiliation(s)
- Nurzhan Kuanyshev
- Department of Biotechnology and Biosciences; University of Milano-Bicocca; Piazza della Scienza 2 Milano 20126 Italy
| | - Giusy M. Adamo
- Department of Biotechnology and Biosciences; University of Milano-Bicocca; Piazza della Scienza 2 Milano 20126 Italy
| | - Danilo Porro
- Department of Biotechnology and Biosciences; University of Milano-Bicocca; Piazza della Scienza 2 Milano 20126 Italy
| | - Paola Branduardi
- Department of Biotechnology and Biosciences; University of Milano-Bicocca; Piazza della Scienza 2 Milano 20126 Italy
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Ravindran R, Jaiswal AK. Microbial Enzyme Production Using Lignocellulosic Food Industry Wastes as Feedstock: A Review. Bioengineering (Basel) 2016; 3:E30. [PMID: 28952592 PMCID: PMC5597273 DOI: 10.3390/bioengineering3040030] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 11/09/2016] [Accepted: 11/11/2016] [Indexed: 11/17/2022] Open
Abstract
Enzymes are of great importance in the industry due to their substrate and product specificity, moderate reaction conditions, minimal by-product formation and high yield. They are important ingredients in several products and production processes. Up to 30% of the total production cost of enzymes is attributed to the raw materials costs. The food industry expels copious amounts of processing waste annually, which is mostly lignocellulosic in nature. Upon proper treatment, lignocellulose can replace conventional carbon sources in media preparations for industrial microbial processes, such as enzyme production. However, wild strains of microorganisms that produce industrially important enzymes show low yield and cannot thrive on artificial substrates. The application of recombinant DNA technology and metabolic engineering has enabled researchers to develop superior strains that can not only withstand harsh environmental conditions within a bioreactor but also ensure timely delivery of optimal results. This article gives an overview of the current complications encountered in enzyme production and how accumulating food processing waste can emerge as an environment-friendly and economically feasible solution for a choice of raw material. It also substantiates the latest techniques that have emerged in enzyme purification and recovery over the past four years.
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Affiliation(s)
- Rajeev Ravindran
- School of Food Science and Environmental Health, College of Sciences and Health, Dublin Institute of Technology, Cathal Brugha Street, Dublin D01 HV58, Ireland.
| | - Amit K Jaiswal
- School of Food Science and Environmental Health, College of Sciences and Health, Dublin Institute of Technology, Cathal Brugha Street, Dublin D01 HV58, Ireland.
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7
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Production of natural 2-phenylethanol: From biotransformation to purified product. FOOD AND BIOPRODUCTS PROCESSING 2016. [DOI: 10.1016/j.fbp.2016.07.011] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Rawat HK, Soni H, Treichel H, Kango N. Biotechnological potential of microbial inulinases: Recent perspective. Crit Rev Food Sci Nutr 2016; 57:3818-3829. [DOI: 10.1080/10408398.2016.1147419] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Hemant Kumar Rawat
- Department of Applied Microbiology and Biotechnology, Dr. Harisingh Gour University, Sagar (M.P.), India
| | - Hemant Soni
- Department of Applied Microbiology and Biotechnology, Dr. Harisingh Gour University, Sagar (M.P.), India
| | - Helen Treichel
- Universidade Federal da Fronteira Sul-Campus de Erechim, Erechim, Brazil
| | - Naveen Kango
- Department of Applied Microbiology and Biotechnology, Dr. Harisingh Gour University, Sagar (M.P.), India
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Paixão SM, Silva TP, Arez BF, Alves L. Advances in the Reduction of the Costs Inherent to Fossil Fuels' Biodesulfurization towards Its Potential Industrial Application. APPLYING NANOTECHNOLOGY TO THE DESULFURIZATION PROCESS IN PETROLEUM ENGINEERING 2016. [DOI: 10.4018/978-1-4666-9545-0.ch013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Biodesulfurization (BDS) process consists on the use of microorganisms for the removal of sulfur from fossil fuels. Through BDS it is possible to treat most of the organosulfur compounds recalcitrant to the conventional hydrodesulfurization (HDS), the petroleum industry's solution, at mild operating conditions, without the need for molecular hydrogen or metal catalysts. This technique results in lower emissions, smaller residue production and less energy consumption, which makes BDS an eco-friendly process that can complement HDS making it more efficient. BDS has been extensively studied and much is already known about the process. Clearly, BDS presents advantages as a complementary technique to HDS; however its commercial use has been delayed by several limitations both upstream and downstream the process. This study will comprehensively review and discuss key issues, like reduction of the BDS costs, advances and/or challenges for a competitive BDS towards its potential industrial application aiming ultra low sulfur fuels.
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Affiliation(s)
| | | | - Bruno F. Arez
- Laboratório Nacional de Energia e Geologia, Portugal
| | - Luís Alves
- Laboratório Nacional de Energia e Geologia, Portugal
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Silva TP, Paixão SM, Alves L. Ability of Gordonia alkanivorans strain 1B for high added value carotenoids production. RSC Adv 2016. [DOI: 10.1039/c6ra08126f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Currently, carotenoids are valuable bioactive molecules for several industries, such as chemical, pharmaceutical, food and cosmetics, due to their multiple benefits as natural colorants, antioxidants and vitamin precursors.
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Affiliation(s)
- Tiago P. Silva
- LNEG – Laboratório Nacional de Energia e Geologia, IP
- Unidade de Bioenergia
- 1649-038 Lisboa
- Portugal
| | - Susana M. Paixão
- LNEG – Laboratório Nacional de Energia e Geologia, IP
- Unidade de Bioenergia
- 1649-038 Lisboa
- Portugal
| | - Luís Alves
- LNEG – Laboratório Nacional de Energia e Geologia, IP
- Unidade de Bioenergia
- 1649-038 Lisboa
- Portugal
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11
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Radecka D, Mukherjee V, Mateo RQ, Stojiljkovic M, Foulquié-Moreno MR, Thevelein JM. Looking beyond Saccharomyces: the potential of non-conventional yeast species for desirable traits in bioethanol fermentation. FEMS Yeast Res 2015; 15:fov053. [PMID: 26126524 DOI: 10.1093/femsyr/fov053] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/10/2015] [Indexed: 01/18/2023] Open
Abstract
Saccharomyces cerevisiae has been used for millennia in the production of food and beverages and is by far the most studied yeast species. Currently, it is also the most used microorganism in the production of first-generation bioethanol from sugar or starch crops. Second-generation bioethanol, on the other hand, is produced from lignocellulosic feedstocks that are pretreated and hydrolyzed to obtain monomeric sugars, mainly D-glucose, D-xylose and L-arabinose. Recently, S. cerevisiae recombinant strains capable of fermenting pentose sugars have been generated. However, the pretreatment of the biomass results in hydrolysates with high osmolarity and high concentrations of inhibitors. These compounds negatively influence the fermentation process. Therefore, robust strains with high stress tolerance are required. Up to now, more than 2000 yeast species have been described and some of these could provide a solution to these limitations because of their high tolerance to the most predominant stress conditions present in a second-generation bioethanol reactor. In this review, we will summarize what is known about the non-conventional yeast species showing unusual tolerance to these stresses, namely Zygosaccharomyces rouxii (osmotolerance), Kluyveromyces marxianus and Ogataea (Hansenula) polymorpha (thermotolerance), Dekkera bruxellensis (ethanol tolerance), Pichia kudriavzevii (furan derivatives tolerance) and Z. bailii (acetic acid tolerance).
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Affiliation(s)
- Dorota Radecka
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, Department of Biology, KU Leuven, Kasteelpark Arenberg 31, B-3001 Leuven-Heverlee, Flanders, Belgium Department of Molecular Microbiology, VIB, Kasteelpark Arenberg 31, B-3001 Leuven-Heverlee, Flanders, Belgium
| | - Vaskar Mukherjee
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, Department of Biology, KU Leuven, Kasteelpark Arenberg 31, B-3001 Leuven-Heverlee, Flanders, Belgium Department of Molecular Microbiology, VIB, Kasteelpark Arenberg 31, B-3001 Leuven-Heverlee, Flanders, Belgium Laboratory for Process Microbial Ecology and Bioinspirational Management, Cluster for Bioengineering Technology (CBeT), Department of Microbial and Molecular Systems (M2S), KU Leuven, Campus De Nayer, B-2860 Sint-Katelijne-Waver, Flanders, Belgium
| | - Raquel Quintilla Mateo
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, Department of Biology, KU Leuven, Kasteelpark Arenberg 31, B-3001 Leuven-Heverlee, Flanders, Belgium Department of Molecular Microbiology, VIB, Kasteelpark Arenberg 31, B-3001 Leuven-Heverlee, Flanders, Belgium
| | - Marija Stojiljkovic
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, Department of Biology, KU Leuven, Kasteelpark Arenberg 31, B-3001 Leuven-Heverlee, Flanders, Belgium Department of Molecular Microbiology, VIB, Kasteelpark Arenberg 31, B-3001 Leuven-Heverlee, Flanders, Belgium
| | - María R Foulquié-Moreno
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, Department of Biology, KU Leuven, Kasteelpark Arenberg 31, B-3001 Leuven-Heverlee, Flanders, Belgium Department of Molecular Microbiology, VIB, Kasteelpark Arenberg 31, B-3001 Leuven-Heverlee, Flanders, Belgium
| | - Johan M Thevelein
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, Department of Biology, KU Leuven, Kasteelpark Arenberg 31, B-3001 Leuven-Heverlee, Flanders, Belgium Department of Molecular Microbiology, VIB, Kasteelpark Arenberg 31, B-3001 Leuven-Heverlee, Flanders, Belgium
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12
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Silva TP, Paixão SM, Roseiro JC, Alves L. Jerusalem artichoke as low-cost fructose-rich feedstock for fossil fuels desulphurization by a fructophilic bacterium. J Appl Microbiol 2015; 118:609-18. [PMID: 25494982 DOI: 10.1111/jam.12721] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 10/27/2014] [Accepted: 12/07/2014] [Indexed: 11/29/2022]
Abstract
AIMS Through biodesulphurization (BDS) is possible to remove the sulphur present in fossil fuels to carry out the very strict legislation. However, this biological process is limited by the cost of the culture medium, and thus, it is important to explore cheaper alternative carbon sources, such as Jerusalem artichoke (JA). These carbon sources usually contain sulphates which interfere with the BDS process. The goal of this work was to remove the sulphates from Jerusalem artichoke juice (JAJ) through BaCl2 precipitation viewing the optimization of dibenzothiophene (DBT) desulphurization by Gordonia alkanivorans strain 1B. METHODS AND RESULTS Using a statistical design (Doehlert distribution), the effect of BaCl2 concentration (0.125-0.625%) and pH (5-9) was studied on sulphate concentration in hydrolysed JAJ. A validated surface response derived from data indicated that zero sulphates can be achieved with 0.5-0.55% (w/v) BaCl2 at pH 7; however, parallel BDS assays showed that the highest desulphurization was obtained with the juice treated with 0.5% (w/v) BaCl2 at pH 8.73. Further assays demonstrated that enhanced DBT desulphurization was achieved using hydrolysed JAJ treated in these optimal conditions. A total conversion of 400 μmol l(-1) DBT into 2-hydroxybiphenyl (2-HBP) in <90 h was observed, attaining a 2-HBP maximum production rate of 28.2 μmol l(-1) h(-1) and a specific production rate of 5.06 μmol(-1) g(-1) (DCW) h(-1) . CONCLUSIONS These results highlight the efficacy of the treatment applied to JAJ in making this agromaterial a promising low-cost renewable feedstock for improved BDS by the fructophilic strain 1B. SIGNIFICANCE AND IMPACT OF THE STUDY This study is a fundamental step viewing BDS application at the industrial level as it accounts a cost-effective production of the biocatalysts, one of the main drawbacks for BDS scale-up.
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Affiliation(s)
- T P Silva
- LNEG - National Laboratory of Energy and Geology, Bioenergy Unit, Lisbon, Portugal
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13
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Production of inulinase, fructosyltransferase and sucrase from fungi on low-value inulin-rich substrates and their use in generation of fructose and fructo-oligosaccharides. Antonie van Leeuwenhoek 2015; 107:799-811. [DOI: 10.1007/s10482-014-0373-3] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2014] [Accepted: 12/29/2014] [Indexed: 11/26/2022]
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14
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Alves L, Paixão SM, Pacheco R, Ferreira AF, Silva CM. Biodesulphurization of fossil fuels: energy, emissions and cost analysis. RSC Adv 2015. [DOI: 10.1039/c4ra14216k] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
BDS and HDS as a combined technology towards ultra low sulphur fuels.
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Affiliation(s)
- L. Alves
- LNEG – Laboratório Nacional de Energia e Geologia, IP
- Unidade de Bioenergia
- 1649-038 Lisboa
- Portugal
| | - S. M. Paixão
- LNEG – Laboratório Nacional de Energia e Geologia, IP
- Unidade de Bioenergia
- 1649-038 Lisboa
- Portugal
| | - R. Pacheco
- IDMEC
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - A. F. Ferreira
- IDMEC
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - C. M. Silva
- IDMEC
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
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15
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Inulinase production by the yeast Kluyveromyces marxianus with the disrupted MIG1 gene and the over-expressed inulinase gene. Process Biochem 2014. [DOI: 10.1016/j.procbio.2014.08.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Arez BF, Alves L, Paixão SM. Production and Characterization of a Novel Yeast Extracellular Invertase Activity Towards Improved Dibenzothiophene Biodesulfurization. Appl Biochem Biotechnol 2014; 174:2048-57. [DOI: 10.1007/s12010-014-1182-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Accepted: 08/18/2014] [Indexed: 11/29/2022]
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17
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Teixeira AV, Paixão SM, da Silva TL, Alves L. Influence of the Carbon Source on Gordonia alkanivorans Strain 1B Resistance to 2-Hydroxybiphenyl Toxicity. Appl Biochem Biotechnol 2014; 173:870-82. [DOI: 10.1007/s12010-014-0902-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 04/02/2014] [Indexed: 11/27/2022]
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18
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Enhancement of Dibenzothiophene Desulfurization by Gordonia alkanivorans Strain 1B Using Sugar Beet Molasses as Alternative Carbon Source. Appl Biochem Biotechnol 2014; 172:3297-305. [DOI: 10.1007/s12010-014-0763-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Accepted: 01/27/2014] [Indexed: 12/30/2022]
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Apolinário AC, de Lima Damasceno BPG, de Macêdo Beltrão NE, Pessoa A, Converti A, da Silva JA. Inulin-type fructans: A review on different aspects of biochemical and pharmaceutical technology. Carbohydr Polym 2014; 101:368-78. [DOI: 10.1016/j.carbpol.2013.09.081] [Citation(s) in RCA: 188] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 09/10/2013] [Accepted: 09/21/2013] [Indexed: 01/22/2023]
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Li Y, Liu GL, Chi ZM. Ethanol production from inulin and unsterilized meal of Jerusalem artichoke tubers by Saccharomyces sp. W0 expressing the endo-inulinase gene from Arthrobacter sp. BIORESOURCE TECHNOLOGY 2013; 147:254-259. [PMID: 23999259 DOI: 10.1016/j.biortech.2013.08.043] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2013] [Revised: 08/04/2013] [Accepted: 08/06/2013] [Indexed: 06/02/2023]
Abstract
After the endo-inulinase gene from Arthrobacter sp. was ligated the expression vectors pMIDSC31 and pMIRSC31, the endo-inulinase gene was inserted into the chromosomal DNA of Saccharomyces sp. W0. It was found that the inulinase activity of the recombinant yeast D5 in which the endo-inulinase gene was inserted into the delta sequence was higher than that of the recombinant yeast R1 in which the endo-inulinase gene was inserted into 18S rDNA sequence. More ethanol from inulin was produced by the recombinant yeast D5 than by the recombinant yeast R1. But Saccharomyces sp. W0 produced the lowest inulinase activity and concentration of ethanol. During the 3-l fermentation, the recombinant yeast D5 could produce 13.6 ml of ethanol per 100ml of the fermented medium from 30% inulin. The recombinant yeast D5 could actively convert the unsterilized meal of Jerusalem artichoke tubers, yielding 10.1 ml of ethanol per 100ml of the fermented medium.
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Affiliation(s)
- Yang Li
- Unesco Chinese Center of Marine Biotechnology, Ocean University of China, Yushan Road, No. 5, Qingdao 266003, China
| | - Guang-Lei Liu
- Unesco Chinese Center of Marine Biotechnology, Ocean University of China, Yushan Road, No. 5, Qingdao 266003, China
| | - Zhen-Ming Chi
- Unesco Chinese Center of Marine Biotechnology, Ocean University of China, Yushan Road, No. 5, Qingdao 266003, China.
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Alves L, Paixão SM. Fructophilic behaviour of Gordonia alkanivorans strain 1B during dibenzothiophene desulfurization process. N Biotechnol 2013; 31:73-9. [PMID: 24012483 DOI: 10.1016/j.nbt.2013.08.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 08/15/2013] [Accepted: 08/22/2013] [Indexed: 01/23/2023]
Abstract
Biodesulfurization (BDS) aims at the removal of recalcitrant sulfur from fossil fuels at mild operating conditions with the aid of microorganisms. These microorganisms can remove sulfur from dibenzothiphene (DBT), a model compound, or other polycyclic aromatic used as sulfur source, making BDS an easy and environmental friendly process. Gordonia alkanivorans strain 1B has been described as a desulfurizing bacterium, able to desulfurize DBT to 2-hydroxybiphenyl (2-HBP), the final product of the 4S pathway, using d-glucose as carbon source. However, both cell growth and desulfurization can be largely affected by the nutrient composition of the growth medium, due to cofactor requirements of many enzymes involved in the BDS biochemical pathway. In this study, the main goal was to investigate the influence of several sugars, as carbon source, on the growth and DBT desulfurization ability of G. alkanivorans strain 1B. The results of desulfurization tests showed that the lowest values for the growth rate (0.025 hour(-1)) and for the overall 2-HBP production rate (1.80 μm/hour) by the strain 1B were obtained in glucose grown cultures. When using sucrose, the growth rate increase exhibited by strain 1B led to a higher biomass productivity, which induced a slightly increase in the 2-HBP production rate (1.91 μm/hour), conversely in terms of 2-HBP specific production rate (q2-HBP) the value obtained was markedly lower (0.718 μmol/g/hour in sucrose versus 1.22 μmol/g/hour in glucose). When a mixture of glucose and fructose was used as carbon source, strain 1B reached a value of q2-HBP=1.90 μmol/g/hour, close to that in fructose (q2-HBP=2.12 μmol/g/hour). The highest values for both cell growth (μ=0.091 hour(-1)) and 2-HPB production (9.29μm/hour) were obtained when strain 1B was desulfurizing DBT in the presence of fructose as the only carbon source, indicating a fructophilic behaviour by this bacterium. This fact is in agreement with the highest value of biomass productivity by strain 1B be in fructose, which resulted in a higher amount cells fulfilling the DBT-desulfurization. The greater number of functional cells conducted to a more effectiveness BDS process by strain 1B, as they attained a q2-HBP about 74% higher than in glucose grown cultures. Moreover, this significant BDS enhancement can better be observed in terms of the overall 2-HBP production rate, which increased over 5-fold, from 1.80 μm/hour (in glucose) to 9.29 μm/hour (in fructose).
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Affiliation(s)
- Luís Alves
- LNEG - Instituto Nacional de Energia e Geologia, IP, Unidade de Bioenergia, Estrada do Paço do Lumiar, 22, 1649-038 Lisboa, Portugal.
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Genome Sequence of the Food Spoilage Yeast Zygosaccharomyces bailii CLIB 213T. GENOME ANNOUNCEMENTS 2013; 1:1/4/e00606-13. [PMID: 23969048 PMCID: PMC3751603 DOI: 10.1128/genomea.00606-13] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The ascomycetous yeast Zygosaccharomyces bailii is one of the most problematic spoilage yeasts in food and beverage industries, due to its exceptional resistance to various stresses. A better understanding of the molecular mechanisms underlying these stress resistance phenotypes might help develop strategies to improve food quality. Thus, we determined and annotated the genome sequence of the strain Z. bailii CLIB 213(T) (= CBS 680).
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