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Thitiprasert S, Jaiaue P, Amornbunchai N, Thammakes J, Piluk J, Srimongkol P, Tanasupawat S, Thongchul N. Association between organic nitrogen substrates and the optical purity of D-lactic acid during the fermentation by Sporolactobacillus terrae SBT-1. Sci Rep 2024; 14:10522. [PMID: 38719898 PMCID: PMC11079031 DOI: 10.1038/s41598-024-61247-4] [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: 09/27/2023] [Accepted: 05/03/2024] [Indexed: 05/12/2024] Open
Abstract
The development of biotechnological lactic acid production has attracted attention to the potential production of an optically pure isomer of lactic acid, although the relationship between fermentation and the biosynthesis of highly optically pure D-lactic acid remains poorly understood. Sporolactobacillus terrae SBT-1 is an excellent D-lactic acid producer that depends on cultivation conditions. Herein, three enzymes responsible for synthesizing optically pure D-lactic acid, including D-lactate dehydrogenase (D-LDH; encoded by ldhDs), L-lactate dehydrogenase (L-LDH; encoded by ldhLs), and lactate racemase (Lar; encoded by larA), were quantified under different organic nitrogen sources and concentration to study the relationship between fermentation conditions and synthesis pathway of optically pure lactic acid. Different organic nitrogen sources and concentrations significantly affected the quantity and quality of D-lactic acid produced by strain SBT-1 as well as the synthetic optically pure lactic acid pathway. Yeast extract is a preferred organic nitrogen source for achieving high catalytic efficiency of D-lactate dehydrogenase and increasing the transcription level of ldhA2, indicating that this enzyme plays a major role in D-lactic acid formation in S. terrae SBT-1. Furthermore, lactate racemization activity could be regulated by the presence of D-lactic acid. The results of this study suggest that specific nutrient requirements are necessary to achieve a stable and highly productive fermentation process for the D-lactic acid of an individual strain.
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Affiliation(s)
- Sitanan Thitiprasert
- Center of Excellence in Bioconversion and Bioseparation for Platform Chemical Production, Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand.
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand.
| | - Phetcharat Jaiaue
- Program in Biotechnology, Faculty of Science, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
| | - Nichakorn Amornbunchai
- Program in Biotechnology, Faculty of Science, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
| | - Jesnipit Thammakes
- Program in Biotechnology, Faculty of Science, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
| | - Jirabhorn Piluk
- Center of Excellence in Bioconversion and Bioseparation for Platform Chemical Production, Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
| | - Piroonporn Srimongkol
- Center of Excellence in Bioconversion and Bioseparation for Platform Chemical Production, Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
| | - Somboon Tanasupawat
- Center of Excellence in Bioconversion and Bioseparation for Platform Chemical Production, Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
- Department of Biochemistry and Microbiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
| | - Nuttha Thongchul
- Center of Excellence in Bioconversion and Bioseparation for Platform Chemical Production, Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand.
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand.
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2
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Wongvitvichot W, Thitiprasert S, Thongchul N, Chaisuwan T. Metal ion removal using a low-cost coconut shell activated carbon bioadsorbent in the recovery of lactic acid from the fermentation broth. BIORESOUR BIOPROCESS 2023; 10:58. [PMID: 38647753 PMCID: PMC10992777 DOI: 10.1186/s40643-023-00672-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 07/30/2023] [Indexed: 04/25/2024] Open
Abstract
Downstream recovery and purification of lactic acid from the fermentation broth using locally available, low-cost materials derived from agricultural residues was demonstrated herein. Surface modification of coconut shell activated carbon (CSAC) was performed by grafting with carboxymethyl cellulose (CMC) using citric acid (CA) as the crosslinking agent. A proper ratio of CMC and CA to CSAC and grafting time improved the surface functionalization of grafted nanostructured CMC-CSAC while the specific surface area and porosity remained unchanged. Lactic acid was partially purified (78%) with the recovery percentage of lactic acid at 96% in single-stage adsorption at room temperature and pH 6 with a 10:1 ratio of cell-free broth to CMC-CSAC bioadsorbent. A thermodynamic study revealed that the adsorption was exothermic and non-spontaneous while the Langmuir isotherm model explained the adsorption phenomena. The results in this study represented the potential of waste utilization as solid adsorbents in green and low-cost adsorption technology.
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Affiliation(s)
- Wasupon Wongvitvichot
- The Petroleum and Petrochemical College, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
| | - Sitanan Thitiprasert
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
- Center of Excellence in Bioconversion and Bioseparation for Platform Chemical Production, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
| | - Nuttha Thongchul
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand.
- Center of Excellence in Bioconversion and Bioseparation for Platform Chemical Production, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand.
| | - Thanyalak Chaisuwan
- The Petroleum and Petrochemical College, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand.
- The Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Phayathai Road, Wangmai, Bangkok, 10330, Thailand.
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Gül H, Güngörmüşler M. Utilizing response surface methodology to evaluate the process parameters of indigenous cucumber fermentation. Z NATURFORSCH C 2022; 77:417-427. [PMID: 35452573 DOI: 10.1515/znc-2022-0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 03/29/2022] [Indexed: 11/15/2022]
Abstract
Commercial pickled cucumbers are produced in variety of salt concentrations including brines up to 15% sodium chloride due to the preventive nature of the salt towards microbial growth. Although it is deemed necessary for manufacturers to utilize high amounts of salts to prolong shelf life, the high content creates a burden for the growth of beneficial microorganisms including probiotics. In this study, the production of naturally fermented cucumbers and their microbial viability were tested with the help of an experimental design tool, Box-Behnken Design (BBD), to evaluate the optimal conditions for the production process and to maintain the highest viability of potential beneficial microorganisms during storage. Accordingly, the operational conditions including salt concentration (2, 5, or 8%), fermentation temperature (20, 25, or 30 °C), and brine filling (pretreatment) temperature (80, 85, or 90 °C) were optimized with a significant fit to a quadratic model (p < 0.05). The trends for sugar consumption and total acid production were monitored to demonstrate the correlation between the above-mentioned operational parameters for the fermentation process of pickled cucumbers with indigenous microorganisms. Overall, 5% salt content, 70 °C filling temperature and 25 °C fermentation medium was determined to maintain over 6 log cfu/mL viability. The results represent a valuable contribution to the pickle industry including a know-how of process parameters.
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Affiliation(s)
- Hazal Gül
- Division of Bioengineering, Graduate School, Izmir University of Economics, Sakarya Caddesi No: 156, 35330 Balçova, Izmir, Turkey.,EuroGıda Ind. Trade Co. Ltd, Armutlu 85.Yıl Mah. Sanayi Cad. No:108/4, 35737 Kemalpaşa, Izmir, Turkey
| | - Mine Güngörmüşler
- Division of Bioengineering, Graduate School, Izmir University of Economics, Sakarya Caddesi No: 156, 35330 Balçova, Izmir, Turkey
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4
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Sarenkova I, Sáez‐Orviz S, Ciprovica I, Rendueles M, Díaz M. Lactobionic acid production by
Pseudomonas taetrolens
in a fed‐batch bioreactor using acid whey as substrate. INT J DAIRY TECHNOL 2022. [DOI: 10.1111/1471-0307.12841] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Inga Sarenkova
- Faculty of Food Technology Latvia University of Life Sciences and Technologies 22a Rigas Street Jelgava Latvia
| | - Sara Sáez‐Orviz
- Department of Chemical Engineering and Environmental Technology Faculty of Chemistry University of Oviedo Av. Julian Clavería 8 Oviedo 33006 Spain
| | - Inga Ciprovica
- Faculty of Food Technology Latvia University of Life Sciences and Technologies 22a Rigas Street Jelgava Latvia
| | - Manuel Rendueles
- Department of Chemical Engineering and Environmental Technology Faculty of Chemistry University of Oviedo Av. Julian Clavería 8 Oviedo 33006 Spain
| | - Mario Díaz
- Department of Chemical Engineering and Environmental Technology Faculty of Chemistry University of Oviedo Av. Julian Clavería 8 Oviedo 33006 Spain
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Bigoniya P, Sohgaura AK, Shrivastava B. Antilithiatic effect of C. dactylon, E. officinalis, K. pinnata, and B. nutans ethyl acetate fraction on glyoxylate-induced nephrolithiasis. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2021. [DOI: 10.1186/s43094-021-00227-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
The plants Cynodon dactylon (C. dactylon), Emblica officinalis (E. officinalis), Kalanchoe pinnata (K. pinnata), and Bambusa nutans (B. nutans) have been reported to possess diuretic and antiurolithiatic potential against ethylene glycol and ammonium chloride along with in vitro calcium oxalate (CaOx) crystal growth inhibition property. Our previous research publications reported a rich presence of antioxidative phytocompounds like polyphenols and flavonoids in ethyl acetate fractions of these plants. This present study aims to explore antiurolithiatic potential of C. dactylon, E. officinalis, K. pinnata, and B. nutans ethyl acetate fraction following 7 days of sodium glyoxalate treatment on mice.
Results
Sodium glyoxylate treatment caused significant (P < 0.01–0.001) reduction in the urine magnesium and creatinine and elevation in oxalate, citrate, calcium, and phosphate levels. Ethyl acetate fraction of K. pinnata and B. nutans showed a highly significant antilithiatic effect by increasing urine volume, normalizing disrupted urine parameters, increasing LDH level, and decreasing kidney tissue oxalate content. E. officinalis and K. pinnata ethyl acetate fraction treatment showed a pronounced reversal of tubular dilation and damage of epithelial cell in kidney tissue with very less inflammatory cell infiltration.
Conclusion
The results signify the protective effect of K. pinnata and B. nutans ethyl acetate fraction rich with polyphenol and flavonoid on glyoxylate induced oxidative cell damage and morphological changes in mouse kidneys.
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E J, Chen J, Chen Z, Ma R, Zhang J, Yao C, Wang R, Zhang Q, Yang Y, Li J, Wang J. Effects of different initial pH values on freeze-drying resistance of Lactiplantibacillus plantarum LIP-1 based on transcriptomics and proteomics. Food Res Int 2021; 149:110694. [PMID: 34600689 DOI: 10.1016/j.foodres.2021.110694] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 08/15/2021] [Accepted: 08/31/2021] [Indexed: 12/21/2022]
Abstract
The growth and the resistance to adverse environments of lactic acid bacteria would be affected by adjusting the initial pH of the medium. In order to explore the effect of changing the initial pH of culture medium on the freeze-drying survival rate of the Lactiplantibacillus plantarum LIP-1, the effect of initial pH on cell membrane fatty acid composition and key enzyme activity were mainly determined, and the internal mechanism was studied by transcriptomics and proteomics methods. We found that compared with initial pH 7.4 group, initial pH 6.8 group could improve the freeze-drying survival rate of the L. plantarum LIP-1. It was possibly due to the lactate dehydrogenase (LDH) was upregulated in the initial pH6.8 group, which led to a rapid decrease in culture pH. To reduce the inhibitory effect of long-term acid environment on growth, the strain upregulated the expression of fatty acid synthesis-related genes and proteins, promoted the relative content of cyclopropane and unsaturated fatty acids, improved integrity of the cell membranes. The adjustment of fatty acid composition maintained the integrity of the cell membrane in a freeze-drying environment to improve the freeze-drying survival rate of the initial pH6.8 group. In addition, the long-term acid environment stimulated a cross-stress tolerance mechanism that significantly upregulated the expression of a cold stress protein. The results indicated that the optimal initial pH of the medium could improve the ability of L. plantarum LIP-1 to resist freeze-drying.
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Affiliation(s)
- Jingjing E
- Key Laboratory of Dairy Biotechnology and Engineering, Education Ministry of P. R. China, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China
| | - Jing Chen
- Key Laboratory of Dairy Biotechnology and Engineering, Education Ministry of P. R. China, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China
| | - Zichao Chen
- Key Laboratory of Dairy Biotechnology and Engineering, Education Ministry of P. R. China, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China
| | - Rongze Ma
- Key Laboratory of Dairy Biotechnology and Engineering, Education Ministry of P. R. China, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China
| | - Jingya Zhang
- Key Laboratory of Dairy Biotechnology and Engineering, Education Ministry of P. R. China, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China
| | - Caiqing Yao
- Key Laboratory of Dairy Biotechnology and Engineering, Education Ministry of P. R. China, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China
| | - Ruixue Wang
- Key Laboratory of Dairy Biotechnology and Engineering, Education Ministry of P. R. China, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China
| | - Qiaoling Zhang
- Key Laboratory of Dairy Biotechnology and Engineering, Education Ministry of P. R. China, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China
| | - Ying Yang
- Key Laboratory of Dairy Biotechnology and Engineering, Education Ministry of P. R. China, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China
| | - Jing Li
- Key Laboratory of Dairy Biotechnology and Engineering, Education Ministry of P. R. China, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China
| | - Junguo Wang
- Key Laboratory of Dairy Biotechnology and Engineering, Education Ministry of P. R. China, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture, Department of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, PR China
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7
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Augustiniene E, Valanciene E, Matulis P, Syrpas M, Jonuskiene I, Malys N. Bioproduction of l- and d-lactic acids: advances and trends in microbial strain application and engineering. Crit Rev Biotechnol 2021; 42:342-360. [PMID: 34412525 DOI: 10.1080/07388551.2021.1940088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Lactic acid is an important platform chemical used in the food, agriculture, cosmetic, pharmaceutical, and chemical industries. It serves as a building block for the production of polylactic acid (PLA), a biodegradable polymer, which can replace traditional petroleum-based plastics and help to reduce environmental pollution. Cost-effective production of optically pure l- and d-lactic acids is necessary to achieve a quality and thermostable PLA product. This paper evaluates research advances in the bioproduction of l- and d-lactic acids using microbial fermentation. Special emphasis is given to the development of metabolically engineered microbial strains and processes tailored to alternative and flexible feedstock concepts such as: lignocellulose, glycerol, C1-gases, and agricultural-food industry byproducts. Alternative fermentation concepts that can improve lactic acid production are discussed. The potential use of inducible gene expression systems for the development of biosensors to facilitate the screening and engineering of lactic acid-producing microorganisms is discussed.
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Affiliation(s)
- Ernesta Augustiniene
- Faculty of Chemical Technology, Bioprocess Research Centre, Kaunas University of Technology, Kaunas, Lithuania
| | - Egle Valanciene
- Faculty of Chemical Technology, Bioprocess Research Centre, Kaunas University of Technology, Kaunas, Lithuania
| | - Paulius Matulis
- Faculty of Chemical Technology, Bioprocess Research Centre, Kaunas University of Technology, Kaunas, Lithuania
| | - Michail Syrpas
- Faculty of Chemical Technology, Bioprocess Research Centre, Kaunas University of Technology, Kaunas, Lithuania
| | - Ilona Jonuskiene
- Faculty of Chemical Technology, Bioprocess Research Centre, Kaunas University of Technology, Kaunas, Lithuania
| | - Naglis Malys
- Faculty of Chemical Technology, Bioprocess Research Centre, Kaunas University of Technology, Kaunas, Lithuania
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8
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Choi IY, Kim J, Kim SH, Ban OH, Yang J, Park MK. Safety Evaluation of Bifidobacterium breve IDCC4401 Isolated from Infant Feces for Use as a Commercial Probiotic. J Microbiol Biotechnol 2021; 31:949-955. [PMID: 34024895 PMCID: PMC9706084 DOI: 10.4014/jmb.2103.03041] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/10/2021] [Accepted: 05/21/2021] [Indexed: 12/15/2022]
Abstract
Previously, our research group isolated Bifidobacterium breve IDCC4401 from infant feces as a potential probiotic. For this study, we evaluated the safety of B. breve IDCC4401 using genomic and phenotypic analyses. Whole genome sequencing was performed to identify genomic characteristics and investigate the potential presence of genes encoding virulence, antibiotic resistance, and mobile genetic elements. Phenotypic analyses including antibiotic susceptibility, enzyme activity, production of biogenic amines (BAs), and proportion of D-/L-lactate were evaluated using E-test, API ZYM test, high-performance liquid chromatography (HPLC), and D-/L-lactic acid assay respectively. The genome of B. breve IDCC4401 consists of 2,426,499 bp with a GC content of 58.70% and 2,016 coding regions. Confirmation of the genome as B. breve was provided by its 98.93% similarity with B. breve DSM20213. Furthermore, B. breve IDCC4401 genes encoding virulence and antibiotic resistance were not identified. Although B. breve IDCC4401 showed antibiotic resistance against vancomycin, we confirmed that this was an intrinsic feature since the antibiotic resistance gene was not present. B. breve IDCC4401 showed leucine arylamidase, cystine arylamidase, α-galactosidase, β-galactosidase, and α-glucosidase activities, whereas it did not show production of harmful enzymes such as β-glucosidase and β-glucuronidase. In addition, B. breve IDCC4401 did not produce any tyramine, histamine, putrescine, cadaverine, or 2-phenethylamine, which are frequently detected BAs during fermentation. B. breve IDCC4401 produced 95.08% of L-lactate and 4.92% of Dlactate. Therefore, our findings demonstrate the safety of B. breve IDCC 4401 as a potential probiotic for use in the food industry.
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Affiliation(s)
- In Young Choi
- School of Food Science and Biotechnology, Kyungpook National University, Daegu 41566, Republic of Korea,Food and Bio-Industry Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Jinhee Kim
- Drug Information Platform Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea
| | - Su-Hyeon Kim
- School of Food Science and Biotechnology, Kyungpook National University, Daegu 41566, Republic of Korea,Food and Bio-Industry Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - O-Hyun Ban
- Ildong BioScience, Pyeongtaek 17957, Republic of Korea
| | - Jungwoo Yang
- Ildong BioScience, Pyeongtaek 17957, Republic of Korea
| | - Mi-Kyung Park
- School of Food Science and Biotechnology, Kyungpook National University, Daegu 41566, Republic of Korea,Food and Bio-Industry Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea,Corresponding author Phone: +82-53-950-5776 Fax: +82-53-950-6772 E-mail:
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9
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Watcharawipas A, Sae-Tang K, Sansatchanon K, Sudying P, Boonchoo K, Tanapongpipat S, Kocharin K, Runguphan W. Systematic engineering of Saccharomyces cerevisiae for D-lactic acid production with near theoretical yield. FEMS Yeast Res 2021; 21:6226681. [PMID: 33856451 DOI: 10.1093/femsyr/foab024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 04/13/2021] [Indexed: 11/12/2022] Open
Abstract
D-lactic acid is a chiral three-carbon organic acid that can improve the thermostability of polylactic acid. Here, we systematically engineered Saccharomyces cerevisiae to produce D-lactic acid from glucose, a renewable carbon source, at near theoretical yield. Specifically, we screened D-lactate dehydrogenase (DLDH) variants from lactic acid bacteria in three different genera and identified the Leuconostoc pseudomesenteroides variant (LpDLDH) as having the highest activity in yeast. We then screened single-gene deletions to minimize the production of the side products ethanol and glycerol as well as prevent the conversion of D-lactic acid back to pyruvate. Based on the results of the DLDH screening and the single-gene deletions, we created a strain called ASc-d789M which overexpresses LpDLDH and contains deletions in glycerol pathway genes GPD1 and GPD2 and lactate dehydrogenase gene DLD1, as well as downregulation of ethanol pathway gene ADH1 using the L-methionine repressible promoter to minimize impact on growth. ASc-d789M produces D-lactic acid at a titer of 17.09 g/L in shake-flasks (yield of 0.89 g/g glucose consumed or 89% of the theoretical yield). Fed-batch fermentation resulted in D-lactic acid titer of 40.03 g/L (yield of 0.81 g/g glucose consumed). Altogether, our work represents progress towards efficient microbial production of D-lactic acid.
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Affiliation(s)
- Akaraphol Watcharawipas
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Paholyothin Road, Klong 1, Klong Luang, Pathumthani 12120, Thailand
| | - Kittapong Sae-Tang
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Paholyothin Road, Klong 1, Klong Luang, Pathumthani 12120, Thailand
| | - Kitisak Sansatchanon
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Paholyothin Road, Klong 1, Klong Luang, Pathumthani 12120, Thailand
| | - Pipat Sudying
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Paholyothin Road, Klong 1, Klong Luang, Pathumthani 12120, Thailand
| | - Kriengsak Boonchoo
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Paholyothin Road, Klong 1, Klong Luang, Pathumthani 12120, Thailand
| | - Sutipa Tanapongpipat
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Paholyothin Road, Klong 1, Klong Luang, Pathumthani 12120, Thailand
| | - Kanokarn Kocharin
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Paholyothin Road, Klong 1, Klong Luang, Pathumthani 12120, Thailand
| | - Weerawat Runguphan
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Paholyothin Road, Klong 1, Klong Luang, Pathumthani 12120, Thailand
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