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Keitel L, Braun K, Finger M, Kosfeld U, Yordanov S, Büchs J. Carbon dioxide and trace oxygen concentrations impact growth and product formation of the gut bacterium Phocaeicola vulgatus. BMC Microbiol 2023; 23:391. [PMID: 38062358 PMCID: PMC10701953 DOI: 10.1186/s12866-023-03127-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 11/17/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND The promising yet barely investigated anaerobic species Phocaeicola vulgatus (formerly Bacteroides vulgatus) plays a vital role for human gut health and effectively produces organic acids. Among them is succinate, a building block for high-value-added chemicals. Cultivating anaerobic bacteria is challenging, and a detailed understanding of P. vulgatus growth and metabolism is required to improve succinate production. One significant aspect is the influence of different gas concentrations. CO2 is required for the growth of P. vulgatus. However, it is a greenhouse gas that should not be wasted. Another highly interesting aspect is the sensitivity of P. vulgatus towards O2. In this work, the effects of varying concentrations of both gases were studied in the in-house developed Respiratory Activity MOnitoring System (RAMOS), which provides online monitoring of CO2, O2, and pressure under gassed conditions. The RAMOS was combined with a gas mixing system to test CO2 and O2 concentrations in a range of 0.25-15.0 vol% and 0.0-2.5 vol%, respectively. RESULTS Changing the CO2 concentration in the gas supply revealed a CO2 optimum of 3.0 vol% for total organic acid production and 15.0 vol% for succinate production. It was demonstrated that the organic acid composition changed depending on the CO2 concentration. Furthermore, unrestricted growth of P. vulgatus up to an O2 concentration of 0.7 vol% in the gas supply was proven. The viability decreased rapidly at concentrations larger than or equal to 1.3 vol% O2. CONCLUSIONS The study showed that P. vulgatus requires little CO2, has a distinct O2 tolerance and is therefore well suited for industrial applications.
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Affiliation(s)
- Laura Keitel
- Chair of Biochemical Engineering (AVT.BioVT), RWTH Aachen University, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Kristina Braun
- Chair of Biochemical Engineering (AVT.BioVT), RWTH Aachen University, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Maurice Finger
- Chair of Biochemical Engineering (AVT.BioVT), RWTH Aachen University, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Udo Kosfeld
- Chair of Biochemical Engineering (AVT.BioVT), RWTH Aachen University, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Stanislav Yordanov
- Chair of Biochemical Engineering (AVT.BioVT), RWTH Aachen University, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Jochen Büchs
- Chair of Biochemical Engineering (AVT.BioVT), RWTH Aachen University, Forckenbeckstraße 51, 52074, Aachen, Germany.
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Kumar V, Bansal V, Madhavan A, Kumar M, Sindhu R, Awasthi MK, Binod P, Saran S. Active pharmaceutical ingredient (API) chemicals: a critical review of current biotechnological approaches. Bioengineered 2022; 13:4309-4327. [PMID: 35135435 PMCID: PMC8973766 DOI: 10.1080/21655979.2022.2031412] [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] [Indexed: 12/19/2022] Open
Abstract
The aim of this article was to generate a framework of bio-based economy by an effective utilization of biomass from the perspectives of agriculture for developing potential end bio-based products (e.g. pharmaceuticals, active pharmaceutical ingredients). Our discussion is also extended to the conservatory ways of bioenergy along with development of bio-based products and biofuels. This review article further showcased the fundamental principles for producing these by-products. Thereby, the necessity of creating these products is to be efficaciously utilization by small-scale farmers that can aid the local needs for bio-based materials and energy. Concurrently, the building up of small markets will open up the avenues and linkages for bigger markets. In nutshell, the aim of the review is to explore the pathway of the biotechnological approaches so that less chosen producers and underdeveloped areas can be allied so that pressure on the systems of biomass production can be relaxed.
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Affiliation(s)
- Vinod Kumar
- Fermentation Technology and Microbial Biotechnology Division, Csir- Indian Institute of Integrative Medicine (Csir-iiim), J & K, India.,Academy of Scientific and Innovative Research (Acsir), Ghaziabad-India
| | - Vasudha Bansal
- Department of Foods and Nutrition, Government Home Science College, Affiliated to Panjab University, Chandigarh, India
| | - Aravind Madhavan
- Division of Infectious Disease Biology, Rajiv Gandhi Centre for Biotechnology, - Trivandrum- India
| | - Manoj Kumar
- Fermentation Technology and Microbial Biotechnology Division, Csir- Indian Institute of Integrative Medicine (Csir-iiim), J & K, India.,Academy of Scientific and Innovative Research (Acsir), Ghaziabad-India
| | - Raveendran Sindhu
- Deapartment of Food Technology, Tkm Institute of Technology, Kollam-India
| | - Mukesh Kumar Awasthi
- Department of Resource and Environmental Science, College of Natural Resources and Environment, Northwest A&f University, Shaanxi Province, Yangling, PR China
| | - Parameswaran Binod
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary, Science and Technology (Csir-niist), Trivandrum- India
| | - Saurabh Saran
- Fermentation Technology and Microbial Biotechnology Division, Csir- Indian Institute of Integrative Medicine (Csir-iiim), J & K, India
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3
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Awasthi MK, Ferreira JA, Sirohi R, Sarsaiya S, Khoshnevisan B, Baladi S, Sindhu R, Binod P, Pandey A, Juneja A, Kumar D, Zhang Z, Taherzadeh MJ. A critical review on the development stage of biorefinery systems towards the management of apple processing-derived waste. RENEWABLE AND SUSTAINABLE ENERGY REVIEWS 2021; 143:110972. [DOI: 10.1016/j.rser.2021.110972] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/20/2023]
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4
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Gonzales TA, Carvalho Silvello MAD, Duarte ER, Santos LO, Alegre RM, Goldbeck R. Optimization of anaerobic fermentation of Actinobacillus succinogenes for increase the succinic acid production. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101718] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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5
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Rychlik I. Composition and Function of Chicken Gut Microbiota. Animals (Basel) 2020; 10:ani10010103. [PMID: 31936291 PMCID: PMC7022619 DOI: 10.3390/ani10010103] [Citation(s) in RCA: 168] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 12/31/2019] [Accepted: 01/03/2020] [Indexed: 12/16/2022] Open
Abstract
Simple Summary Chickens evolved for millions of years to be hatched in a nest in contact with an adult hen. However, current commercial production of chickens is based on hatching chicks in a clean hatchery environment in the absence of adult hens. The ancestors of domestic chickens inhabited a living environment different from that used for current commercial production. Currently, the lifespan of broilers is around 5 weeks, the lifespan of egg layers is around one year while chickens can live for 15–20 years. This means that studies on chicken–microbiota interactions are of specific importance. The intestinal tract of commercially hatched chicks is gradually colonised from environmental sources only, however, if the chicks are provided experimentally with microbiota from a hen they can be colonised by adult-type microbiota from the very first days of life and become resistant to infections with pathogenic Escherichia coli, Clostridium perfringens, or Salmonella. Because of such specificities in the interactions of chickens with their gut microbiota, current knowledge in this area is critically presented in this review. Abstract Studies analyzing the composition of gut microbiota are quite common at present, mainly due to the rapid development of DNA sequencing technologies within the last decade. This is valid also for chickens and their gut microbiota. However, chickens represent a specific model for host–microbiota interactions since contact between parents and offspring has been completely interrupted in domesticated chickens. Nearly all studies describe microbiota of chicks from hatcheries and these chickens are considered as references and controls. In reality, such chickens represent an extreme experimental group since control chicks should be, by nature, hatched in nests in contact with the parent hen. Not properly realising this fact and utilising only 16S rRNA sequencing results means that many conclusions are of questionable biological relevance. The specifics of chicken-related gut microbiota are therefore stressed in this review together with current knowledge of the biological role of selected microbiota members. These microbiota members are then evaluated for their intended use as a form of next-generation probiotics.
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Affiliation(s)
- Ivan Rychlik
- Department of Immunology, Veterinary Research Institute, 621 00 Brno, Czech Republic
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6
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Amulya K, Mohan SV. Fixation of CO 2, electron donor and redox microenvironment regulate succinic acid production in Citrobacter amalonaticus. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 695:133838. [PMID: 31756859 DOI: 10.1016/j.scitotenv.2019.133838] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 08/06/2019] [Accepted: 08/06/2019] [Indexed: 06/10/2023]
Abstract
Biological sequestration of CO2 for generating value added products is an emerging strategy. Succinic acid (SA) is an important C4 building block chemical, and its biological production via CO2 sequestration, holds many practical applications. This study presents an in-depth insight on SA production using isolated strain belonging to genus Citrobacter, more closely related to Citrobacter amalonaticus by considering critical process parameters such as different carbon sources at various initial concentrations, buffering agent (NaHCO3) concentrations and different pH conditions. The effect of H2 gas as an electron donor and availability of CO2 during SA production was also evaluated. The results from this work demonstrated that the isolated strain depicted the ability to utilize diverse carbon sources and highest SA production was achieved with sucrose as a substrate, indicating that reduced carbon substrates help in maximizing the redox potential. Incorporation of CO2 and H2 not only enhanced the production of SA but also affected the total acids profile favoring the production of SA over lactic, formic and acetic acids. Additional supply of CO2 and H2 led to maximum SA production of 12.07 gL-1, productivity of 0.36 gL-1 h-1 and SA yield of 48.5%. In control operation when no gases were supplied and in other test conditions where either of the gases were supplied, lactic acid was the major end product followed by acetic acid. The positive effect of CO2 for SA production provides scope for sustainable integration of SA and the CO2-generating biofuel industries or industrial side streams.
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Affiliation(s)
- K Amulya
- Bioengineering and Environmental Sciences (BEES) Lab, Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Technology (CSIR-IICT) Campus, Hyderabad 500 007, India
| | - S Venkata Mohan
- Bioengineering and Environmental Sciences (BEES) Lab, Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Technology (CSIR-IICT) Campus, Hyderabad 500 007, India.
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7
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Continuous Succinic Acid Fermentation by Actinobacillus Succinogenes: Assessment of Growth and Succinic Acid Production Kinetics. Appl Biochem Biotechnol 2018; 187:782-799. [DOI: 10.1007/s12010-018-2846-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 07/16/2018] [Indexed: 11/30/2022]
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8
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Mika LT, Cséfalvay E, Németh Á. Catalytic Conversion of Carbohydrates to Initial Platform Chemicals: Chemistry and Sustainability. Chem Rev 2017; 118:505-613. [DOI: 10.1021/acs.chemrev.7b00395] [Citation(s) in RCA: 662] [Impact Index Per Article: 94.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- László T. Mika
- Department
of Chemical and Environmental Process Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3., Budapest 1111, Hungary
| | - Edit Cséfalvay
- Department
of Energy Engineering, Budapest University of Technology and Economics, Budapest 1111, Hungary
| | - Áron Németh
- Department
of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Budapest 1111, Hungary
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Biotechnological route for sustainable succinate production utilizing oil palm frond and kenaf as potential carbon sources. Appl Microbiol Biotechnol 2017; 101:3055-3075. [PMID: 28280869 DOI: 10.1007/s00253-017-8210-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 02/20/2017] [Accepted: 02/21/2017] [Indexed: 10/20/2022]
Abstract
Due to the world's dwindling energy supplies, greater thrust has been placed on the utilization of renewable resources for global succinate production. Exploration of such biotechnological route could be seen as an act of counterbalance to the continued fossil fuel dominance. Malaysia being a tropical country stands out among many other nations for its plenty of resources in the form of lignocellulosic biomass. To date, oil palm frond (OPF) contributes to the largest fraction of agricultural residues in Malaysia, while kenaf, a newly introduced fiber crop with relatively high growth rate, holds great potential for developing sustainable succinate production, apart from OPF. Utilization of non-food, inexhaustible, and low-cost derived biomass in the form of OPF and kenaf for bio-based succinate production remains largely untapped. Owing to the richness of carbohydrates in OPF and kenaf, bio-succinate commercialization using these sources appears as an attractive proposition for future sustainable developments. The aim of this paper was to review some research efforts in developing a biorefinery system based on OPF and kenaf as processing inputs. It presents the importance of the current progress in bio-succinate commercialization, in addition to describing the potential use of different succinate production hosts and various pretreatments-saccharifications under development for OPF and kenaf. Evaluations on the feasibility of OPF and kenaf as fermentation substrates are also discussed.
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10
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Polansky O, Sekelova Z, Faldynova M, Sebkova A, Sisak F, Rychlik I. Important Metabolic Pathways and Biological Processes Expressed by Chicken Cecal Microbiota. Appl Environ Microbiol 2015. [PMID: 26712550 DOI: 10.1128/aem.03473-15.editor] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2023] Open
Abstract
The gut microbiota plays important roles in its host. However, how each microbiota member contributes to the behavior of the whole population is not known. In this study, we therefore determined protein expression in the cecal microbiota in chickens of selected ages and in 7-day-old chickens inoculated with different cecal extracts on the day of hatching. Campylobacter, Helicobacter, Mucispirillum, and Megamonas overgrew in the ceca of 7-day-old chickens inoculated with cecal extracts from donor hens. Firmicutes were characterized by ABC and phosphotransferase system (PTS) transporters, extensive acyl coenzyme A (acyl-CoA) metabolism, and expression of l-fucose isomerase. Anaerostipes, Anaerotruncus, Pseudoflavonifractor, Dorea, Blautia, and Subdoligranulum expressed spore proteins. Firmicutes (Faecalibacterium, Butyrivibrio, Megasphaera, Subdoligranulum, Oscillibacter, Anaerostipes, and Anaerotruncus) expressed enzymes required for butyrate production. Megamonas, Phascolarctobacterium, and Blautia (exceptions from the phylum Firmicutes) and all Bacteroidetes expressed enzymes for propionate production pathways. Representatives of Bacteroidetes also expressed xylose isomerase, enzymes required for polysaccharide degradation, and ExbBD, TonB, and outer membrane receptors likely to be involved in oligosaccharide transport. Based on our data, Anaerostipes, Anaerotruncus, and Subdoligranulum might be optimal probiotic strains, since these represent spore-forming butyrate producers. However, certain care should be taken during microbiota transplantation because the microbiota may behave differently in the intestinal tract of a recipient depending on how well the existing communities are established.
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Affiliation(s)
- Ondrej Polansky
- Veterinary Research Institute, Brno, Czech RepublicINRS-Institut Armand-Frappier
| | - Zuzana Sekelova
- Veterinary Research Institute, Brno, Czech RepublicINRS-Institut Armand-Frappier
| | - Marcela Faldynova
- Veterinary Research Institute, Brno, Czech RepublicINRS-Institut Armand-Frappier
| | - Alena Sebkova
- Veterinary Research Institute, Brno, Czech RepublicINRS-Institut Armand-Frappier
| | - Frantisek Sisak
- Veterinary Research Institute, Brno, Czech RepublicINRS-Institut Armand-Frappier
| | - Ivan Rychlik
- Veterinary Research Institute, Brno, Czech RepublicINRS-Institut Armand-Frappier
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11
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Important Metabolic Pathways and Biological Processes Expressed by Chicken Cecal Microbiota. Appl Environ Microbiol 2015; 82:1569-76. [PMID: 26712550 DOI: 10.1128/aem.03473-15] [Citation(s) in RCA: 241] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 12/19/2015] [Indexed: 12/26/2022] Open
Abstract
The gut microbiota plays important roles in its host. However, how each microbiota member contributes to the behavior of the whole population is not known. In this study, we therefore determined protein expression in the cecal microbiota in chickens of selected ages and in 7-day-old chickens inoculated with different cecal extracts on the day of hatching. Campylobacter, Helicobacter, Mucispirillum, and Megamonas overgrew in the ceca of 7-day-old chickens inoculated with cecal extracts from donor hens. Firmicutes were characterized by ABC and phosphotransferase system (PTS) transporters, extensive acyl coenzyme A (acyl-CoA) metabolism, and expression of l-fucose isomerase. Anaerostipes, Anaerotruncus, Pseudoflavonifractor, Dorea, Blautia, and Subdoligranulum expressed spore proteins. Firmicutes (Faecalibacterium, Butyrivibrio, Megasphaera, Subdoligranulum, Oscillibacter, Anaerostipes, and Anaerotruncus) expressed enzymes required for butyrate production. Megamonas, Phascolarctobacterium, and Blautia (exceptions from the phylum Firmicutes) and all Bacteroidetes expressed enzymes for propionate production pathways. Representatives of Bacteroidetes also expressed xylose isomerase, enzymes required for polysaccharide degradation, and ExbBD, TonB, and outer membrane receptors likely to be involved in oligosaccharide transport. Based on our data, Anaerostipes, Anaerotruncus, and Subdoligranulum might be optimal probiotic strains, since these represent spore-forming butyrate producers. However, certain care should be taken during microbiota transplantation because the microbiota may behave differently in the intestinal tract of a recipient depending on how well the existing communities are established.
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12
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Shah NB, Tande AJ, Patel R, Berbari EF. Anaerobic prosthetic joint infection. Anaerobe 2015; 36:1-8. [DOI: 10.1016/j.anaerobe.2015.08.003] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 08/23/2015] [Accepted: 08/24/2015] [Indexed: 12/01/2022]
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13
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Lagkouvardos I, Kläring K, Heinzmann SS, Platz S, Scholz B, Engel KH, Schmitt-Kopplin P, Haller D, Rohn S, Skurk T, Clavel T. Gut metabolites and bacterial community networks during a pilot intervention study with flaxseeds in healthy adult men. Mol Nutr Food Res 2015; 59:1614-28. [PMID: 25988339 DOI: 10.1002/mnfr.201500125] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 03/27/2015] [Accepted: 04/13/2015] [Indexed: 01/01/2023]
Abstract
SCOPE Flaxseeds contain the phytoestrogens lignans that must be activated to enterolignans by intestinal bacteria. We investigated the impact of flaxseeds on fecal bacterial communities and their associations with fecal and blood metabolites. METHODS AND RESULTS Nine healthy male adult subjects ingested 0.3 g/kg/day flaxseeds during 1 week. Gut bacteria as well as blood and fecal metabolites were analyzed. Ingestion of flaxseeds triggered a significant increase in the blood concentration of enterolignans, accompanied by fecal excretion of propionate and glycerol. Overall diversity and composition of dominant fecal bacteria remained individual specific throughout the study. Enterolactone production was linked to the abundance of two molecular species identified as Ruminococcus bromii and Ruminococcus lactaris. Most dominant species of the order Bacteroidales were positively associated with fecal concentrations of either acetic, isovaleric, or isobutyric acid, the latter being negatively correlated with blood levels of triglycerides. The relative sequence abundance of one Gemmiger species (Ruminococcaceae) and of Coprococcus comes (Lachnospiraceae) correlated positively with blood levels of LDL cholesterol and triglycerides, respectively. CONCLUSION Flaxseeds increase enterolignan production but do not markedly alter fecal metabolome and dominant bacterial communities. The data underline the possible role of members of the family Ruminococcaceae in the regulation of enterolignan production and blood lipids.
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Affiliation(s)
- Ilias Lagkouvardos
- Research Group Intestinal Microbiome, ZIEL Institute for Food and Health, Technische Universität München, Freising, Germany.,Chair of Nutrition and Immunology, Technische Universität München, Freising, Germany
| | - Karoline Kläring
- Research Group Intestinal Microbiome, ZIEL Institute for Food and Health, Technische Universität München, Freising, Germany
| | - Silke S Heinzmann
- Analytical BioGeoChemistry, Helmholtz Zentrum München, Neuherberg, Freising, Germany
| | | | - Birgit Scholz
- General Food Technology, Technische Universität München, Freising, Germany
| | - Karl-Heinz Engel
- General Food Technology, Technische Universität München, Freising, Germany
| | - Philippe Schmitt-Kopplin
- Analytical BioGeoChemistry, Helmholtz Zentrum München, Neuherberg, Freising, Germany.,Chair of Analytical Food Chemistry, Technische Universität München, Freising, Germany
| | - Dirk Haller
- Chair of Nutrition and Immunology, Technische Universität München, Freising, Germany
| | - Sascha Rohn
- Food Chemistry, Hamburg University, Hamburg, Germany
| | - Thomas Skurk
- ZIEL Human Study Unit, Technische Universität München, Freising, Germany
| | - Thomas Clavel
- Research Group Intestinal Microbiome, ZIEL Institute for Food and Health, Technische Universität München, Freising, Germany
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Li Q, Xing J. Microbial Succinic Acid Production Using Different Bacteria Species. MICROORGANISMS IN BIOREFINERIES 2015. [DOI: 10.1007/978-3-662-45209-7_7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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15
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Tan JP, Md. Jahim J, Wu TY, Harun S, Kim BH, Mohammad AW. Insight into Biomass as a Renewable Carbon Source for the Production of Succinic Acid and the Factors Affecting the Metabolic Flux toward Higher Succinate Yield. Ind Eng Chem Res 2014. [DOI: 10.1021/ie502178j] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
| | | | - Ta Yeong Wu
- Chemical
Engineering Discipline, School of Engineering, Monash University, Jalan
Lagoon Selatan, Bandar Sunway, 46150, Selangor Darul Ehsan, Malaysia
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A natural isolate producing shikimic acid: isolation, identification, and culture condition optimization. Appl Biochem Biotechnol 2013; 169:2290-302. [PMID: 23443722 DOI: 10.1007/s12010-013-0150-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2012] [Accepted: 02/18/2013] [Indexed: 10/27/2022]
Abstract
Shikimic acid has wide use in pharmaceuticals due to its application in the synthesis of drug Tamiflu used in the treatment of Swine flu. The high cost and limited availability of shikimic acid isolated from plants has impeded the use of this valuable building block of the drug. In this context, fermentation route to produce shikimic acid from renewable resources has become increasingly attractive. The present study was embarked upon isolation of wild-type microorganisms able to produce shikimic acid. Out of the 42 isolates obtained from the soil, isolate GR-21 was selected as the best with initial production of 0.54 g/L shikimic acid and later identified as Citrobacter sp. The process optimization resulted in 14-fold increase in the shikimic acid production, thereby claiming this process to be a sustainable alternative for the production of this important biomolecule. The process was further scaled up to 14 L bioreactor to validate the production of shikimic acid. Further, the product formed is shikimic acid was confirmed by FTIR analysis. The current studies suggest that the selected isolate could be used as a promising agent to fulfill the worldwide demand of shikimic acid.
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Beauprez JJ, De Mey M, Soetaert WK. Microbial succinic acid production: Natural versus metabolic engineered producers. Process Biochem 2010. [DOI: 10.1016/j.procbio.2010.03.035] [Citation(s) in RCA: 211] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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18
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pH and base counterion affect succinate production in dual-phase Escherichia coli fermentations. J Ind Microbiol Biotechnol 2009; 36:1101-9. [PMID: 19484279 DOI: 10.1007/s10295-009-0594-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2009] [Accepted: 05/11/2009] [Indexed: 10/20/2022]
Abstract
Succinate production was studied in Escherichia coli AFP111, which contains mutations in pyruvate formate lyase (pfl), lactate dehydrogenase (ldhA) and the phosphotransferase system glucosephosphotransferase enzyme II (ptsG). Two-phase fermentations using a defined medium at several controlled levels of pH were conducted in which an aerobic cell growth phase was followed by an anaerobic succinate production phase using 100% (v/v) CO(2). A pH of 6.4 yielded the highest specific succinate productivity. A metabolic flux analysis at a pH of 6.4 using (13)C-labeled glucose showed that 61% of the PEP partitioned to oxaloacetate and 39% partitioned to pyruvate, while 93% of the succinate was formed via the reductive arm of the TCA cycle. The flux distribution at a pH of 6.8 was also analyzed and was not significantly different compared to that at a pH of 6.4. Ca(OH)(2) was superior to NaOH or KOH as the base for controlling the pH. By maintaining the pH at 6.4 using 25% (w/v) Ca(OH)(2), the process achieved an average succinate productivity of 1.42 g/l h with a yield of 0.61 g/g.
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An Efficient RNA Extraction Method for Estimating Gut Microbial Diversity by Polymerase Chain Reaction. Curr Microbiol 2009; 58:464-71. [DOI: 10.1007/s00284-008-9345-z] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2008] [Revised: 12/08/2008] [Accepted: 12/10/2008] [Indexed: 12/12/2022]
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Succinic Acid Production from Cheese Whey using Actinobacillus succinogenes 130 Z. Appl Biochem Biotechnol 2007; 145:111-9. [DOI: 10.1007/s12010-007-8031-0] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2007] [Accepted: 08/27/2007] [Indexed: 10/22/2022]
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