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Mahakuntha C, Reungsang A, Nunta R, Leksawasdi N. Kinetics of Whole Cells and Ethanol Production from Candida tropicalis TISTR 5306 Cultivation in Batch and Fed-batch Modes Using Assorted Grade Fresh Longan Juice. AN ACAD BRAS CIENC 2021; 93:e20200220. [PMID: 34877969 DOI: 10.1590/0001-3765202120200220] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 04/13/2020] [Indexed: 11/22/2022] Open
Abstract
The kinetic profiles of Candida tropicalis TISTR 5306 cultivation based on modified yeast-malt (MYM), assorted grade fresh longan juice (AsgLG) and longan solid waste extract (LSWE) medium were evaluated in 1 l batch mode. The highest ethanol concentration level (25.5 ± 0.8 g/l) and ethanol yield - Yp/s of 0.491 ± 0.017 g ethanol/g consumed substrate, dried biomass concentration level (9.44 ± 0.05 g/l) and dried biomass yield - Yp/s of 0.533 ± 0.170 g dried biomass/g consumed substrate, specific pyruvate decarboxylase (PDC) activity (0.037 ± 0.003 U/mg protein) were achieved (p ≤ 0.05) in AsgLG medium. Scores ranking strategy were employed and AsgLG medium was subsequently selected with in the highest total score (p ≤ 0.05) of 698 ± 7 at 48 h. The cultivation in fed-batch mode with three rounds of pulse feeding (PF) in 1 l AsgLG medium was carried out. The apparent highest ethanol and dried biomass concentration levels with corresponding yields relative to time zero were (28.3 ± 0.5 g/l, 0.482 ± 0.012 g/g) at 120 h of PF2 and (9.39 ± 0.04 g/l, 0.110 ± 0.001 g/g) at 192 h of PF3. The maximum specific PDC activity was 0.057 ± 0.006 U/mg protein during PF1 feeding.
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Affiliation(s)
- Chatchadaporn Mahakuntha
- Division of Biotechnology, Faculty of Graduate School, Chiang Mai University, Chiang Mai, 50100, Thailand.,Cluster of Agro Bio-Circular-Green Industry (Agro BCG) and Bioprocess Research Cluster (BRC), School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai, 50100, Thailand
| | - Alissara Reungsang
- Research Group for Development of Microbial Hydrogen Production Process, Khon Kaen University, Khon Kaen, 40002, Thailand.,Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Rojarej Nunta
- Cluster of Agro Bio-Circular-Green Industry (Agro BCG) and Bioprocess Research Cluster (BRC), School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai, 50100, Thailand.,Division of Food Innovation and Business, Faculty of Agricultural Technology, Lampang Rajabhat University, Lampang, 52100, Thailand
| | - Noppol Leksawasdi
- Cluster of Agro Bio-Circular-Green Industry (Agro BCG) and Bioprocess Research Cluster (BRC), School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai, 50100, Thailand.,Division of Food Process Engineering, School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai, 50100, Thailand
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Nunta R, Techapun C, Jantanasakulwong K, Chaiyaso T, Seesuriyachan P, Khemacheewakul J, Mahakuntha C, Porninta K, Sommanee S, Trinh NT, Leksawasdi N. Batch and continuous cultivation processes of Candida tropicalisTISTR 5306 for ethanol and pyruvate decarboxylase production in fresh longan juice with optimal carbon to nitrogen molar ratio. J FOOD PROCESS ENG 2019. [DOI: 10.1111/jfpe.13227] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Rojarej Nunta
- Bioprocess Research Cluster, School of Agro‐Industry, Faculty of Agro‐IndustryChiang Mai University Chiang Mai Thailand
| | - Charin Techapun
- Bioprocess Research Cluster, School of Agro‐Industry, Faculty of Agro‐IndustryChiang Mai University Chiang Mai Thailand
| | - Kittisak Jantanasakulwong
- Bioprocess Research Cluster, School of Agro‐Industry, Faculty of Agro‐IndustryChiang Mai University Chiang Mai Thailand
| | - Thanongsak Chaiyaso
- Bioprocess Research Cluster, School of Agro‐Industry, Faculty of Agro‐IndustryChiang Mai University Chiang Mai Thailand
| | - Phisit Seesuriyachan
- Bioprocess Research Cluster, School of Agro‐Industry, Faculty of Agro‐IndustryChiang Mai University Chiang Mai Thailand
| | - Julaluk Khemacheewakul
- Bioprocess Research Cluster, School of Agro‐Industry, Faculty of Agro‐IndustryChiang Mai University Chiang Mai Thailand
| | - Chatchadaporn Mahakuntha
- Bioprocess Research Cluster, School of Agro‐Industry, Faculty of Agro‐IndustryChiang Mai University Chiang Mai Thailand
| | - Kritsadaporn Porninta
- Bioprocess Research Cluster, School of Agro‐Industry, Faculty of Agro‐IndustryChiang Mai University Chiang Mai Thailand
| | - Sumeth Sommanee
- Bioprocess Research Cluster, School of Agro‐Industry, Faculty of Agro‐IndustryChiang Mai University Chiang Mai Thailand
| | - Ngoc T. Trinh
- Department of Food Engineering, Faculty of Food Science and TechnologyNong Lam University ‐ Ho Chi Minh City Ho Chi Minh City Vietnam
| | - Noppol Leksawasdi
- Bioprocess Research Cluster, School of Agro‐Industry, Faculty of Agro‐IndustryChiang Mai University Chiang Mai Thailand
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Khan TR, Daugulis AJ. Application of solid-liquid TPPBs to the production of L-phenylacetylcarbinol from benzaldehyde using Candida utilis. Biotechnol Bioeng 2011; 107:633-41. [PMID: 20552670 DOI: 10.1002/bit.22839] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The biotransformation of benzaldehyde and glucose to L-phenylacetylcarbinol (PAC) using Candida utilis was demonstrated in a solid-liquid two-phase partitioning bioreactor (TPPB) with the aim of reducing substrate, product, and by-product toxicity via sequestration. Previous work in the field had used octanol as the sequestering phase of liquid-liquid TPPBs but was limited by the toxic effects of octanol on C. utilis. To improve solvent selection in any future studies, the critical log P of C. utilis was determined in the current study to be 4.8 and can be used to predict biocompatible solvents. Bioavailability tests showed alkanes and alkenes to be non-bioavailable. As polymers are biocompatible and non-bioavailable, a wide range of commercially available polymers was screened and it was demonstrated that polymer softness plays a key role in absorptive capability. The polymer Hytrel G3548L was selected as the second phase to sequester benzaldehyde, PAC, and benzyl alcohol, with partition coefficients of 35, 7.5, and 10, respectively. With a 9% by volume partitioning phase, 13.6 g/L biomass of C. utilis achieved an overall PAC concentration of 11 g/L, a 1.9-fold improvement over the single-phase case. Benzyl alcohol concentration was 4.5 g/L, a 1.6-fold reduction. The volumetric productivity was 0.85 g/L h, a 1.2-fold improvement over the single-phase system. These results demonstrate a promising starting point for solid-liquid TPPBs for PAC production.
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Affiliation(s)
- Tanya R Khan
- Department of Chemical Engineering, Queen's University, Kingston, Ontario, Canada
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Peng Z, Fang J, Li J, Liu L, Du G, Chen J, Wang X, Ning J, Cai L. Combined dissolved oxygen and pH control strategy to improve the fermentative production of l-isoleucine by Brevibacterium lactofermentum. Bioprocess Biosyst Eng 2009; 33:339-45. [DOI: 10.1007/s00449-009-0329-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2009] [Accepted: 04/27/2009] [Indexed: 11/28/2022]
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Response of Saccharomyces cerevisiae to stress-free acidification. J Microbiol 2009; 47:1-8. [PMID: 19229485 DOI: 10.1007/s12275-008-0167-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2008] [Accepted: 09/27/2008] [Indexed: 10/21/2022]
Abstract
Genome-wide transcriptional analysis of a Saccharomyces cerevisiae batch culture revealed that more than 829 genes were regulated in response to an environmental shift from pH 6 to pH 3 by added sulfuric acid. This shift in pH was not detrimental to the rate of growth compared to a control culture that was maintained at pH 6 and the transcriptional changes most strikingly implicated not up- but down-regulation of stress responses. In addition, the transcriptional changes upon acid addition indicated remodeling of the cell wall and central carbon metabolism. The overall trend of changes was similar for the pH-shift experiment and the pH 6 control. However, the changes in the pH 6 control were much weaker and occurred 2.5 h later than in the pH-shift experiment. Thus, the reaction to the steep pH decrease was an immediate response within the normal repertoire of adaptation shown in later stages of fermentation at pH 6. Artificially preventing the yeast from acidifying the medium may be considered physiologically stressful under the tested conditions.
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Current awareness on yeast. Yeast 2006. [DOI: 10.1002/yea.1314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Satianegara G, Rogers PL, Rosche B. Comparative studies on enzyme preparations and role of cell components for (R)-phenylacetylcarbinol production in a two-phase biotransformation. Biotechnol Bioeng 2006; 94:1189-95. [PMID: 16685710 DOI: 10.1002/bit.20959] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Whole cell pyruvate decarboxylase (PDC) from Candida utilis enhanced the enzymatic production of (R)-phenylacetylcarbinol (PAC) in an aqueous/octanol biotransformation compared to the partially purified PDC especially for a lower range of initial activities (0.3-2.5 U/mL). With an initial activity of 1.1 U/mL and at a 1:1 phase volume ratio, whole cell PDC achieved a maximum specific PAC production of 42 mg/U (2.8 g/L/h) in comparison to 13 mg/U (0.9 g/L/h) for partially purified PDC. The enhanced performance of whole cell PDC was associated with high stability towards the substrate benzaldehyde. The strong PDC inactivation by benzaldehyde was minimal even when whole cells were broken as long as cell debris was not removed from the broken cells. Biotransformations with various cellular components added to partially purified PDC revealed that membrane components especially 2 mg/mL phosphatidylcholine enhanced PAC concentrations. The role of surfactants was further confirmed from the results with synthetic surfactant sodium bis(2-ethyl-1-hexyl)sulfosuccinate (AOT). It was apparent that the membrane components in whole cells were sufficient for optimal PAC production and no further surfactant addition is required for optimal performance.
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Affiliation(s)
- Gernalia Satianegara
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney NSW 2052, Australia
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