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Liang C, Ding S, Sun W, Liu L, Zhao W, Zhang D, Ying H, Liu D, Chen Y. Biofilm-based fermentation: a novel immobilisation strategy for Saccharomyces cerevisiae cell cycle progression during ethanol production. Appl Microbiol Biotechnol 2020; 104:7495-7505. [PMID: 32666184 DOI: 10.1007/s00253-020-10770-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 06/07/2020] [Accepted: 07/02/2020] [Indexed: 12/11/2022]
Abstract
Biofilm-based fermentation, as a new immobilisation strategy, is beneficial for industrial fermentation due to its excellent environmental resistance, high productivity and continuous fermentation relative to calcium alginate-immobilised fermentation. These two techniques differ mainly regarding cell stages. Here, we describe the cell phenotype of Saccharomyces cerevisiae biofilm-based fermentation and compare cell cycle stages with those during immobilisation in calcium alginate. Most cells in the biofilm-based fermentation adhered to the cotton-fibre carrier of the biofilm and were in the G2/M phase whereas alginate-embedded cells were in the G1/G0 phase. Deletion of the RIM15 gene, which regulates cell cycle progression according to nutritional status, hampered the cell cycle arrest observed in alginate-embedded cells, enhanced biofilm formation and improved fermentation ability. The improved biofilm formation shown by the rim15△ strain could be attributed to an increase in the expression level of the adhesion protein FLO11 and synthesis of trehalose. These findings suggest that the extracellular environment is mainly responsible for the difference between biofilm-based fermentation and alginate-embedded fermentation, and that RIM15 plays an essential role in cell cycle progression. KEY POINTS: • In the biofilm, S. cerevisiae cell populations were mostly in the G2/M phase while alginate-embedded cells were arrested in the G1/G0 phase. • The RIM15 gene partially influenced the cell cycle progression observed during ethanol fermentation. • Biofilm-based cells were actively adsorbed on the physical carrier. • Biofilm immobilisation could maintain cell division activity explaining its fermentation efficiency.
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Affiliation(s)
- Caice Liang
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China.,State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Sai Ding
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China.,State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Wenjun Sun
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China.,State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Li Liu
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China.,State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Wei Zhao
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China.,State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Deli Zhang
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China.,State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Hanjie Ying
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China.,State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China.,School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, 450000, China
| | - Dong Liu
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China.,State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China.,School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, 450000, China
| | - Yong Chen
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China. .,State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China.
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Zabed H, Faruq G, Sahu JN, Azirun MS, Hashim R, Nasrulhaq Boyce A. Bioethanol production from fermentable sugar juice. ScientificWorldJournal 2014; 2014:957102. [PMID: 24715820 PMCID: PMC3970039 DOI: 10.1155/2014/957102] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Accepted: 12/31/2013] [Indexed: 11/25/2022] Open
Abstract
Bioethanol production from renewable sources to be used in transportation is now an increasing demand worldwide due to continuous depletion of fossil fuels, economic and political crises, and growing concern on environmental safety. Mainly, three types of raw materials, that is, sugar juice, starchy crops, and lignocellulosic materials, are being used for this purpose. This paper will investigate ethanol production from free sugar containing juices obtained from some energy crops such as sugarcane, sugar beet, and sweet sorghum that are the most attractive choice because of their cost-effectiveness and feasibility to use. Three types of fermentation process (batch, fed-batch, and continuous) are employed in ethanol production from these sugar juices. The most common microorganism used in fermentation from its history is the yeast, especially, Saccharomyces cerevisiae, though the bacterial species Zymomonas mobilis is also potentially used nowadays for this purpose. A number of factors related to the fermentation greatly influences the process and their optimization is the key point for efficient ethanol production from these feedstocks.
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Affiliation(s)
- Hossain Zabed
- Institute of Biological Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Golam Faruq
- Institute of Biological Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Jaya Narayan Sahu
- Department of Petroleum and Chemical Engineering, Faculty of Engineering, Institut Teknologi Brunei, Tungku Gadong, P.O. Box 2909, Brunei Darussalam
| | - Mohd Sofian Azirun
- Institute of Biological Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Rosli Hashim
- Institute of Biological Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Amru Nasrulhaq Boyce
- Institute of Biological Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Tran CTH, Kondyurin A, Hirsh SL, McKenzie DR, Bilek MMM. Ion-implanted polytetrafluoroethylene enhances Saccharomyces cerevisiae biofilm formation for improved immobilization. J R Soc Interface 2012; 9:2923-35. [PMID: 22696486 DOI: 10.1098/rsif.2012.0347] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The surface of polytetrafluoroethylene (PTFE) was modified using plasma immersion ion implantation (PIII) with the aim of improving its ability to immobilize yeast. The density of immobilized cells on PIII-treated and -untreated PTFE was compared as a function of incubation time over 24 h. Rehydrated yeast cells attached to the PIII-treated PTFE surface more rapidly, with higher density, and greater attachment strength than on the untreated surface. The immobilized yeast cells were removed mechanically or chemically with sodium hydroxide and the residues left on the surfaces were analysed with Fourier transform infrared spectroscopy-attenuated total reflection (FTIR-ATR) and X-ray photoelectron spectroscopy (XPS). The results revealed that the mechanism of cell attachment on both surfaces differs and a model is presented for each. Rapid attachment on the PIII-treated surface occurs through covalent bonds of cell wall proteins and the radicals on the treated surface. In contrast, on the untreated surface, only physisorbed molecules were found in the residue and lipids were more highly concentrated than proteins. The presence of lipids in the residue was found to be a consequence of damage to the plasma membrane during the rehydration process and the increased cell stress was also apparent by the amount of Hsp12 in the protein residue. The immobilized yeast cells on PIII-treated PTFE were found to be as active as yeast cells in suspension.
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Affiliation(s)
- Clara T H Tran
- Applied and Plasma Physics (A28), University of Sydney, Sydney, New South Wales 2006, Australia.
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Ylitervo P, Franzén CJ, Taherzadeh MJ. Ethanol production at elevated temperatures using encapsulation of yeast. J Biotechnol 2011; 156:22-9. [PMID: 21807041 DOI: 10.1016/j.jbiotec.2011.07.018] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2011] [Revised: 06/30/2011] [Accepted: 07/12/2011] [Indexed: 10/18/2022]
Abstract
The ability of macroencapsulated Saccharomyces cerevisiae CBS 8066 to produce ethanol at elevated temperatures was investigated in consecutive batch and continuous cultures. Prior to cultivation yeast was confined inside alginate-chitosan capsules composed of an outer semi-permeable membrane and an inner liquid core. The encapsulated yeast could successfully ferment 30 g/L glucose and produce ethanol at a high yield in five consecutive batches of 12 h duration at 42°C, while freely suspended yeast was completely inactive already in the third batch. A high ethanol production was observed also through the first 48 h at 40°C during continuous cultivation at D=0.2 h(-1) when using encapsulated cells. The ethanol production slowly decreased in the following days at 40°C. The ethanol production was also measured in a continuous cultivation in which the temperature was periodically increased to 42-45°C and lowered to 37°C again in periods of 12h. Our investigation shows that a non-thermotolerant yeast strain improved its heat tolerance upon encapsulation, and could produce ethanol at temperatures as high as 45°C for a short time. The possibility of performing fermentations at higher temperatures would greatly improve the enzymatic hydrolysis in simultaneous saccharification and fermentation (SSF) processes and thereby make the bioethanol production process more economically feasible.
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Affiliation(s)
- Päivi Ylitervo
- School of Engineering, University of Borås, 501 90 Borås, Sweden.
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Chang HN, Kim NJ, Kang J, Jeong CM, Choi JDR, Fei Q, Kim BJ, Kwon S, Lee SY, Kim J. Multi-stage high cell continuous fermentation for high productivity and titer. Bioprocess Biosyst Eng 2010; 34:419-31. [DOI: 10.1007/s00449-010-0485-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2010] [Accepted: 11/03/2010] [Indexed: 11/27/2022]
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Chen TH, Wang SY, Chen KN, Liu JR, Chen MJ. Microbiological and chemical properties of kefir manufactured by entrapped microorganisms isolated from kefir grains. J Dairy Sci 2009; 92:3002-13. [DOI: 10.3168/jds.2008-1669] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Choi GW, Kang HW, Moon SK, Chung BW. Continuous Ethanol Production from Cassava Through Simultaneous Saccharification and Fermentation by Self-Flocculating Yeast Saccharomyces Cerevisiae CHFY0321. Appl Biochem Biotechnol 2009; 160:1517-27. [DOI: 10.1007/s12010-009-8653-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2009] [Accepted: 04/14/2009] [Indexed: 10/20/2022]
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Lovitt RW, Kim BH, Shen GJ, Zeikus JG, Phillips JA. Solvent Production by Microorganisms. Crit Rev Biotechnol 2008. [DOI: 10.3109/07388558809150725] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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11
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Study of sugarcane pieces as yeast supports for ethanol production from sugarcane juice and molasses. J Ind Microbiol Biotechnol 2008; 35:1605-13. [PMID: 18685877 DOI: 10.1007/s10295-008-0404-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2008] [Accepted: 07/23/2008] [Indexed: 10/21/2022]
Abstract
Due to the environmental concerns and the increasing price of oil, bioethanol was already produced in large amount in Brazil and China from sugarcane juice and molasses. In order to make this process competitive, we have investigated the suitability of immobilized Saccharomyces cerevisiae strain AS2.1190 on sugarcane pieces for production of ethanol. Electron microscopy clearly showed that cell immobilization resulted in firm adsorption of the yeast cells within subsurface cavities, capillary flow through the vessels of the vascular bundle structure, and attachment of the yeast to the surface of the sugarcane pieces. Repeated batch fermentations using sugarcane supported-biocatalyst were successfully carried out for at least ten times without any significant loss in ethanol production from sugarcane juice and molasses. The number of cells attached to the support increased during the fermentation process, and fewer yeast cells leaked into fermentation broth. Ethanol concentrations (about 89.73-77.13 g/l in average value), and ethanol productivities (about 59.53-62.79 g/l d in average value) were high and stable, and residual sugar concentrations were low in all fermentations (0.34-3.60 g/l) with conversions ranging from 97.67-99.80%, showing efficiency (90.11-94.28%) and operational stability of the biocatalyst for ethanol fermentation. The results of this study concerning the use of sugarcane as yeast supports could be promising for industrial fermentations.
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12
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Andrietta SR, Steckelberg C, Andrietta MDGS. Study of flocculent yeast performance in tower reactors for bioethanol production in a continuous fermentation process with no cell recycling. BIORESOURCE TECHNOLOGY 2008; 99:3002-8. [PMID: 17889522 DOI: 10.1016/j.biortech.2007.06.037] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2006] [Revised: 06/04/2007] [Accepted: 06/05/2007] [Indexed: 05/17/2023]
Abstract
The purpose of this study was to assess the retention ability of 12 different Saccharomyces sp. yeast strains with flocculent characteristics when inoculated in a continuous ethanol fermentation process. The system was comprised of two reactors connected in series with no cell recycling. The feeding substrate used was a synthetic medium containing glucose. The parameters assessed were total reducing sugars of the feeding substrate, total reducing sugars and ethanol at the outlet of the first and second reactors and quantification and classification of yeast population in the two reactors. The system reached yield levels of 83.53% of theoretical yield with a maximum total reducing sugars conversion of 92.68%. The conversion in this system was lower than expected. The dominant yeast in the process in both reactors, contrary to expectation, was the Saccharomyces CP6 strain which was unable to form pellets in spite of its flocculate growth.
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Affiliation(s)
- Sílvio Roberto Andrietta
- Bioprocess Biotechnology Laboratory, CPQBA, UNICAMP, CP 6171 CEP 13083-970, Campinas, SP, Brazil
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13
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Ethanol fermentation technologies from sugar and starch feedstocks. Biotechnol Adv 2007; 26:89-105. [PMID: 17964107 DOI: 10.1016/j.biotechadv.2007.09.002] [Citation(s) in RCA: 601] [Impact Index Per Article: 35.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2006] [Revised: 08/26/2007] [Accepted: 09/04/2007] [Indexed: 11/22/2022]
Abstract
This article critically reviews some ethanol fermentation technologies from sugar and starch feedstocks, particularly those key aspects that have been neglected or misunderstood. Compared with Saccharomyces cerevisiae, the ethanol yield and productivity of Zymomonas mobilis are higher, because less biomass is produced and a higher metabolic rate of glucose is maintained through its special Entner-Doudoroff pathway. However, due to its specific substrate spectrum as well as the undesirability of its biomass to be used as animal feed, this species cannot readily replace S. cerevisiae in ethanol production. The steady state kinetic models developed for continuous ethanol fermentations show some discrepancies, making them unsuitable for predicting and optimizing the industrial processes. The dynamic behavior of the continuous ethanol fermentation under high gravity or very high gravity conditions has been neglected, which needs to be addressed in order to further increase the final ethanol concentration and save the energy consumption. Ethanol is a typical primary metabolite whose production is tightly coupled with the growth of yeast cells, indicating yeast must be produced as a co-product. Technically, the immobilization of yeast cells by supporting materials, particularly by gel entrapments, is not desirable for ethanol production, because not only is the growth of the yeast cells restrained, but also the slowly growing yeast cells are difficult to be removed from the systems. Moreover, the additional cost from the consumption of the supporting materials, the potential contamination of some supporting materials to the quality of the co-product animal feed, and the difficulty in the microbial contamination control all make the immobilized yeast cells economically unacceptable. In contrast, the self-immobilization of yeast cells through their flocculation can effectively overcome these drawbacks.
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14
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Impacts of temperature, pH, divalent cations, sugars and ethanol on the flocculating of SPSC01. Enzyme Microb Technol 2006. [DOI: 10.1016/j.enzmictec.2005.12.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Impacts of yeast floc size distributions on their observed rates for substrate uptake and product formation. Enzyme Microb Technol 2006. [DOI: 10.1016/j.enzmictec.2005.10.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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Xu T, Zhao X, Bai F. Continuous ethanol production using self-flocculating yeast in a cascade of fermentors. Enzyme Microb Technol 2005. [DOI: 10.1016/j.enzmictec.2005.04.005] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Ge XM, Zhao XQ, Bai FW. Online monitoring and characterization of flocculating yeast cell flocs during continuous ethanol fermentation. Biotechnol Bioeng 2005; 90:523-31. [PMID: 15816023 DOI: 10.1002/bit.20391] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Both intrinsic and observed kinetic investigations for those ethanol fermentations using self-flocculated yeast strains have been hindered by the lack of real online monitoring techniques and proper characterization methods for the flocs. An optical detecting technique, the focused beam reflectance measurement probe developed by Lasentec (Redmond, WA) was inserted into a fermentor to monitor the floc chord length distributions. Using a simulating system composed of the floc-buffer suspensions, the total floc chord length counts per second were directly correlated with the floc biomass concentrations so that the floc biomass concentrations can be in situ detected. Furthermore, a characterization method of the flocs was established by properly weighted treatments of the detected floc chord length distributions. When a real yeast floc ethanol fermentation system was detected during its intrinsic kinetic investigations in which the floc size needed to be controlled at a level of micrometer scale to eliminate inner mass transfer limitations, it was found and validated that CO(2) produced during fermentation exerted significant disturbances. By applying 1/length-weighted treatment, these disturbances were effectively overcome.
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Affiliation(s)
- X M Ge
- Department of Bioscience and Bioengineering, Dalian University of Technology, Dalian 116023, China
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18
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Gòdia F, Casas C, Solà Ç. Mathematical modelization of a packed-bed reactor performance with immobilized yeast for ethanol fermentation. Biotechnol Bioeng 2004; 30:836-43. [DOI: 10.1002/bit.260300705] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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19
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Nomura M, Bin T, Nakao SI. Selective ethanol extraction from fermentation broth using a silicalite membrane. Sep Purif Technol 2002. [DOI: 10.1016/s1383-5866(01)00195-2] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Ogbonna JC, Mashima H, Tanaka H. Scale up of fuel ethanol production from sugar beet juice using loofa sponge immobilized bioreactor. BIORESOURCE TECHNOLOGY 2001; 76:1-8. [PMID: 11315804 DOI: 10.1016/s0960-8524(00)00084-5] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Production of fuel ethanol from sugar beet juice, using cells immobilized on loofa sponge was investigated. Based on ethanol productivity and ease of cell immobilization, a flocculating yeast strain, Saccharomyces cerevisiae IR2 was selected for ethanol production from sugar beet juice. It was found that raw sugar beet juice was an optimal substrate for ethanol production, requiring neither pH adjustment nor nitrogen source supplement. When compared with a 2 l bubble column bioreactor, mixing was not sufficient in an 8 l bioreactor containing a bed of sliced loofa sponges and consequently, the immobilized cells were not uniformly distributed within the bed. Most of the cells were immobilized in the lower part of the bed and this resulted in decreased ethanol productivity. By using an external loop bioreactor, constructing the fixed bed with cylindrical loofa sponges, dividing the bed into upper, middle and lower sections with approximately 1 cm spaces between them and circulating the broth through the loop during the immobilization, uniform cell distribution within the bed was achieved. Using this method, the system was scaled up to 50 l and when compared with the 2 l bubble column bioreactor, there were no significant differences (P > 0.05) in ethanol productivity and yield. By using external loop bioreactor to immobilize the cells uniformly on the loofa sponge beds, efficient large scale ethanol production systems can be constructed.
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Affiliation(s)
- J C Ogbonna
- Institute of Applied Biochemistry, University of Tsukuba, Ibaraki, Japan.
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21
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Abstract
The high level of biocatalysts such as microbial cells and enzymes plays an important role in increasing the productivity of a bioreactor. The beads entrapped with microbial cells are not strong enough for long-term use. The small void space of polymer matrix and the leakage of cells limit a final cell loading in the beads. The recent success of encapsulating microbial cells makes it possible to prepare dense biocatalyst composed of recombinant microbial cells. In addition to encapsulating microbial cells, immobilization of animal and plant cells in capsules is also briefly described.
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Affiliation(s)
- J K Park
- Department of Chemical Engineering, Kyungpook National University, Taegu, South Korea
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23
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Evaluation of plastic composite-supports for enhanced ethanol production in biofilm reactors. ACTA ACUST UNITED AC 1996. [DOI: 10.1007/bf01570028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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25
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Willaert RG, Baron GV. GEL ENTRAPMENT AND MICRO-ENCAPSULATION: METHODS, APPLICATIONS AND ENGINEERING PRINCIPLES. REV CHEM ENG 1996. [DOI: 10.1515/revce.1996.12.1-2.1] [Citation(s) in RCA: 75] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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26
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Roca E, Cameselle C, N��ez MJ, Lema JM. Continuous ethanolic fermentation by Saccharomyces cerevisiae immobilised in Ca-alginate beads hardened with Al3+. ACTA ACUST UNITED AC 1995. [DOI: 10.1007/bf00159407] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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27
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Ohta T, Ogbonna JC, Tanaka H, Yajima M. Development of a fermentation method using immobilized cells under unsterile conditions. 2. Ethanol andl-lactic acid production without heat and filter sterilization. Appl Microbiol Biotechnol 1994. [DOI: 10.1007/bf00902724] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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28
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Deacidification of grape musts by Schizosaccharomyces entrapped in alginate beads: a continuous-fluidized-bed process. ACTA ACUST UNITED AC 1994. [DOI: 10.1016/0923-0467(94)87014-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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29
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Elnashaie S, Fakeeha A, Helal E, Abashar M. A mathematical model achieving the twin objectives of simplicity and accuracy for the simulation of immobilized packed bed fermentors. ACTA ACUST UNITED AC 1994. [DOI: 10.1016/0895-7177(94)90093-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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30
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Melzoch K, Rychtera M, Hábová V. Effect of immobilization upon the properties and behaviour of Saccharomyces cerevisiae cells. J Biotechnol 1994. [DOI: 10.1016/0168-1656(94)90120-1] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Chang HN, Lee WG, Kim BS. Cell retention culture with an internal filter module: Continuous ethanol fermentation. Biotechnol Bioeng 1993; 41:677-81. [DOI: 10.1002/bit.260410612] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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32
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Kuriyama H, Ishibashi H, Umeda I, Murakami T, Kobayashi H. Control of Yeast Flocculation Activity in Continuous Ethanol Fermentation. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 1993. [DOI: 10.1252/jcej.26.429] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hiroshi Kuriyama
- National Institute of Bioscience & Human Technology, Agency of Industrial Science and Technology
| | - Hiroki Ishibashi
- National Institute of Bioscience & Human Technology, Agency of Industrial Science and Technology
| | - Itaru Umeda
- National Institute of Bioscience & Human Technology, Agency of Industrial Science and Technology
| | - Toshio Murakami
- National Institute of Bioscience & Human Technology, Agency of Industrial Science and Technology
| | - Harumi Kobayashi
- National Institute of Bioscience & Human Technology, Agency of Industrial Science and Technology
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33
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Groot WJ, Sikkenk CM, Waldram RH, Lans RGJM, Luyben KCAM. Kinetics of ethanol production by baker's yeast in an integrated process of fermentation and microfiltration. ACTA ACUST UNITED AC 1992. [DOI: 10.1007/bf00369262] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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34
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35
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De Backer L, Devleminck S, Willaert R, Baron G. Reaction and diffusion in a gel membrane reactor containing immobilized cells. Biotechnol Bioeng 1992; 40:322-8. [DOI: 10.1002/bit.260400217] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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36
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Тамамджиев А, Велизаров С, Ангелов М, Добрински Г, Тамамджиев А, Велизаров С, Ангелов М, Добрински Г, Tamamdziev A, Velizarov S, Angelov M, Dobrinski G. АНАЛИЗ НА ДИФУЗИОННИТЕ СЪПРОТИВЛЕНИЯ В РЕАКТОРИ С ИМОБИЛИЗИРАНИ БИОКАТАЛИЗАТОРИ. BIOTECHNOL BIOTEC EQ 1992. [DOI: 10.1080/13102818.1992.10819436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Shabtai Y, Chaimovitz S, Freeman A, Katchalski-Katzir E, Linder C, Nemas M, Perry M, Kedem O. Continuous ethanol production by immobilized yeast reactor coupled with membrane pervaporation unit. Biotechnol Bioeng 1991; 38:869-76. [DOI: 10.1002/bit.260380808] [Citation(s) in RCA: 58] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Gil G, Jones W, Tornabene T. Continuous ethanol production in a two-stage, immobilized/suspended-cell bioreactor. Enzyme Microb Technol 1991. [DOI: 10.1016/0141-0229(91)90200-t] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
Many advantages have been claimed over the years for the use of immobilised cells, both as enzyme systems and as whole viable cell systems for complete fermentation reactions. However, few of the claims have been fully substantiated, and may not even be entirely justified. Most research is involved with single applications and the best that can be hoped for is some evidence that immobilised cells in each of these individual cases display some advantage over the equivalent free cell system. The purpose of this review is to assess the merits of viable cell immobilisation in the light of published literature and to elucidate the underlying mechanisms. Particular attention is paid to the generally unanticipated, but widely observed enhanced stability of immobilised cell fermentation processes.
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Affiliation(s)
- G A Dervakos
- Department of Chemical Engineering, University of Manchester Institute of Science and Technology, Manchester M60 1QD, UK
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Crespo J, Moura M, Almeida J, Carrondo M. Ultrafiltration membrane cell recycle for continuous culture of Propionibacterium. J Memb Sci 1991. [DOI: 10.1016/0376-7388(91)80023-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Kida K, Morimura S, Kume K, Suruga K, Sonoda Y. Repeated-batch ethanol fermentation by a flocculating yeast, Saccharomyces cerevisiae IR-2. ACTA ACUST UNITED AC 1991. [DOI: 10.1016/0922-338x(91)90347-j] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Production of lactic acid from deproteinized whey by coimmobilized Lactobacillus casei and Lactococcus lactis cells. Enzyme Microb Technol 1991. [DOI: 10.1016/0141-0229(91)90185-d] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Chamy R, Nuñez MJ, Lema JM. Optimization of the hardening treatment of S. cerevisiae bioparticles. Enzyme Microb Technol 1990; 12:749-54. [PMID: 1366802 DOI: 10.1016/0141-0229(90)90146-h] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Immobilization of microorganisms for application in fermentation processes generates bioparticles whose mechanical properties can be greatly improved if they are subjected to a hardening process. In this work, the immobilization of Saccharomyces cerevisiae in K-carrageenan and their treatment with Al(NO3)3 as hardening agent have been optimized. The effect of several factors have been studied, including the cell concentration in the gel, the concentration of hardener, and time of contact of this latter with bioparticles. In repeated batch experiments, a factorial design technique has been employed, reaching high values of productivity and a good retention of particles in the matrix. Once optimal conditions were selected, continuous experiments were realized, in which the hardened beads showed significant advantages, such as increase of 20% in ethanol productivity, a better evacuation of gas from the reactor, and a higher cell retention.
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Affiliation(s)
- R Chamy
- Department of Chemical Engineering, Universidad de Santiago de Compostela, Spain
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JOUNG JOHNJ, ROYER GP. Immobilization of Growing Cells and Its Application to the Continuous Ethanol Fermentation Process. Ann N Y Acad Sci 1990. [DOI: 10.1111/j.1749-6632.1990.tb24252.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
Bioconversions involving enzymes and/or microbial cells in aqueous two-phase systems are reviewed. The partitioning of biocatalysts, substrates, and products is discussed in relation to their size. The efficiency of retaining biocatalysts in aqueous two-phase systems is summarized in relation to other methods of recirculating. The influence of phase components on the activity and the stability of enzymatic biocatalysts is exemplified with penicillin acylase and the cellulolytic enzyme system, and the effect of phase components on biocatalytic living cells is exemplified with the production of alpha-amylase with Bacillus sp. Process design costs in bioconversions in aqueous two-phase systems are briefly summarized.
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Affiliation(s)
- E Andersson
- Department of Applied Microbiology, Lund University, Sweden
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Monbouquette HG, Sayles GD, Ollis DF. Immobilized cell biocatalyst activation and pseudo-steady-state behavior: Model and experiment. Biotechnol Bioeng 1990; 35:609-29. [DOI: 10.1002/bit.260350608] [Citation(s) in RCA: 75] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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