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Dong Y, Ronholm J, Fliss I, Karboune S. Screening of Lactic Acid Bacteria Strains for Potential Sourdough and Bread Applications: Enzyme Expression and Exopolysaccharide Production. Probiotics Antimicrob Proteins 2024:10.1007/s12602-024-10270-y. [PMID: 38733464 DOI: 10.1007/s12602-024-10270-y] [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] [Accepted: 04/20/2024] [Indexed: 05/13/2024]
Abstract
Twenty-eight strains of lactic acid bacteria (LAB) were characterized for the ability to express enzymes of interest (including protease, xylanase, α-amylase, laccase, and glucose oxidase) as well as the ability to produce exopolysaccharide (EPS). The screening of enzyme capability for all LAB strains proceeded in a progressive 3-stage manner that helps to profile the efficiency of LAB strains in expressing chosen enzymes (Stage 1), highlights the strains with affinity for flour as the substrate (Stage 2), and discerns strains that can adapt well in a simulated starter environment (Stage 3). The theoretical ability of LAB to express these enzymes was also assessed using Basic Local Alignment Search Tool (BLAST) analysis to identify the underlying genes in the whole genome sequence. By consolidating both experimental data and information obtained from BLAST, three LAB strains were deemed optimal in expressing enzymes, namely, Lb. delbrueckii subsp. bulgaricus (RBL 52), Lb. rhamnosus (RBL 102), and Lb. plantarum (ATCC 10241). Meanwhile, EPS-producing capabilities were observed for 10 out of 28 LAB strains, among which, Lactococcus lactis subsp. diacetylactis (RBL 37) had the highest total EPS yield (274.15 mg polysaccharide/L culture) and produced 46.2% polysaccharide with a molecular mass of more than 100 kDa.
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Affiliation(s)
- YiNing Dong
- Department of Food Science and Agricultural Chemistry, Macdonald Campus, McGill University, Montreal, QC, Canada
| | - Jennifer Ronholm
- Department of Food Science and Agricultural Chemistry, Macdonald Campus, McGill University, Montreal, QC, Canada
| | - Ismail Fliss
- Department of Food Science, Faculty of Agriculture and Food Sciences, Laval University, Quebec City, QC, Canada
| | - Salwa Karboune
- Department of Food Science and Agricultural Chemistry, Macdonald Campus, McGill University, Montreal, QC, Canada.
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Rao Y, Zhuang W, Liu J, Tang T, Wang Z, Ying H. DNA flexible chain modified MOFs as a versatile platform for chemoenzymatic cascade reactions in glucose catalysis. Enzyme Microb Technol 2024; 173:110352. [PMID: 37977052 DOI: 10.1016/j.enzmictec.2023.110352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 10/29/2023] [Accepted: 11/01/2023] [Indexed: 11/19/2023]
Abstract
Glucose oxidase (GOD) is widely used in the pharmaceutical industry, fermentation products and glucose biosensors for its essential role in catalyzing the conversion of glucose to gluconic acid and hydrogen peroxide (H2O2). As H2O2 is the by-product and will have a toxic effect on glucose oxidase, so introducing another enzyme that could consume H2O2 to form an enzymatic cascade reaction is a practical solution. However, this decision will lead to extra expenses and complex condition optimization such as the specific mass ratio, temperature and pH to improve the activity, stability and recyclability. Herein, we describe a mild and versatile strategy by anchoring GOD on carboxyl-activated MOF (Cu-TCPP(Fe)) through DNA-directed immobilization (DDI) technology. Robust MOF nanosheets were utilized as not only the carrier for the immobilization of GOD, but also a peroxidase-like catalyst for the decomposition of H2O2 to reduce its harmful impacts. In this work, the immobilized GOD retained 55.78% of its initial activity after being used for 7 times. More than 60% of the immobilized enzyme's catalytic activity was still maintained after 96 h of being stored at 50 ℃. This study provides a new idea for preparing immobilized enzymes with enhanced stability, fast diffusion and high activity, which can be used in fields such as biocatalysis and biotechnology.
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Affiliation(s)
- Yuan Rao
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Technique Research Center for Biotechnology, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China; School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Wei Zhuang
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Technique Research Center for Biotechnology, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China; School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China.
| | - Jinle Liu
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Ting Tang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Zhi Wang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Hanjie Ying
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Technique Research Center for Biotechnology, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
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Jia W, Li H, Wang Q, Zheng K, Lin H, Li X, Huang J, Xu L, Dong W, Shu Z. Screening of perhydrolases to optimize glucose oxidase-perhydrolase-in situ chemical oxidation cascade reaction system and its application in melanin decolorization. J Biotechnol 2021; 328:106-114. [PMID: 33485863 DOI: 10.1016/j.jbiotec.2021.01.013] [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: 08/07/2020] [Revised: 01/02/2021] [Accepted: 01/12/2021] [Indexed: 10/22/2022]
Abstract
A novel glucose oxidase (GOD)-perhydrolase-in situ chemical oxidation (ISCO) cascade reaction system was designed, optimized, and verified the operation feasibility in this research. Among the determined four perhydrolases, acyltransferase from Mycobacterium smegmatis (MsAcT) displayed the highest specific activity for perhydrolysis reaction (76.4 U/mg) and the lowest Km value to hydrogen peroxide (13.9 mmol/L). GOD-MsAcT cascade reaction system also displayed high catalytic efficiency. Under the optimal parameters (50:1 activity unit ratio of GOD to MsAcT, pH 8.0, 50 mmol/L of β-d-glucose, and 15 mmol/L of glyceryl triacetate), the melanin decolorization rate using GOD-MsAcT-ISCO cascade reaction system reached 86.8 %. Kinetics of GOD-MsAcT-ISCO cascade reaction system for melanin decolorization fitted the kinetic model of Boltzmann sigmoid. As a substitutive skin whitening technology, GOD-MsAcT-ISCO cascade reaction system displayed an excellent application prospect.
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Affiliation(s)
- Wenjing Jia
- National & Local United Engineering Research Center of Industrial Microbiology and Fermentation Technology, Ministry of Education, Fujian Normal University, Fuzhou, 350117, China; College of Life Sciences, Fujian Normal University (Qishan Campus), Fuzhou, 350117, China
| | - Huan Li
- National & Local United Engineering Research Center of Industrial Microbiology and Fermentation Technology, Ministry of Education, Fujian Normal University, Fuzhou, 350117, China; College of Life Sciences, Fujian Normal University (Qishan Campus), Fuzhou, 350117, China
| | - Qian Wang
- National & Local United Engineering Research Center of Industrial Microbiology and Fermentation Technology, Ministry of Education, Fujian Normal University, Fuzhou, 350117, China; College of Life Sciences, Fujian Normal University (Qishan Campus), Fuzhou, 350117, China
| | - Kaixuan Zheng
- National & Local United Engineering Research Center of Industrial Microbiology and Fermentation Technology, Ministry of Education, Fujian Normal University, Fuzhou, 350117, China; College of Life Sciences, Fujian Normal University (Qishan Campus), Fuzhou, 350117, China; Provincial University Key Laboratory of Cellular Stress Response and Metabolic Regulation, Fujian Normal University, Fuzhou, 350117, China
| | - Hong Lin
- National & Local United Engineering Research Center of Industrial Microbiology and Fermentation Technology, Ministry of Education, Fujian Normal University, Fuzhou, 350117, China; College of Life Sciences, Fujian Normal University (Qishan Campus), Fuzhou, 350117, China
| | - Xin Li
- National & Local United Engineering Research Center of Industrial Microbiology and Fermentation Technology, Ministry of Education, Fujian Normal University, Fuzhou, 350117, China; College of Life Sciences, Fujian Normal University (Qishan Campus), Fuzhou, 350117, China
| | - Jianzhong Huang
- National & Local United Engineering Research Center of Industrial Microbiology and Fermentation Technology, Ministry of Education, Fujian Normal University, Fuzhou, 350117, China; College of Life Sciences, Fujian Normal University (Qishan Campus), Fuzhou, 350117, China.
| | - Linting Xu
- National & Local United Engineering Research Center of Industrial Microbiology and Fermentation Technology, Ministry of Education, Fujian Normal University, Fuzhou, 350117, China; College of Life Sciences, Fujian Normal University (Qishan Campus), Fuzhou, 350117, China
| | - Wanqian Dong
- National & Local United Engineering Research Center of Industrial Microbiology and Fermentation Technology, Ministry of Education, Fujian Normal University, Fuzhou, 350117, China; College of Life Sciences, Fujian Normal University (Qishan Campus), Fuzhou, 350117, China
| | - Zhengyu Shu
- National & Local United Engineering Research Center of Industrial Microbiology and Fermentation Technology, Ministry of Education, Fujian Normal University, Fuzhou, 350117, China; College of Life Sciences, Fujian Normal University (Qishan Campus), Fuzhou, 350117, China; Provincial University Key Laboratory of Cellular Stress Response and Metabolic Regulation, Fujian Normal University, Fuzhou, 350117, China.
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Demirkol DO, Yildiz HB, Sayın S, Yilmaz M. Enzyme immobilization in biosensor constructions: self-assembled monolayers of calixarenes containing thiols. RSC Adv 2014. [DOI: 10.1039/c3ra47642a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Herein, an amperometric glucose oxidase (GOx) biosensor is presented using calixarenes as an immobilization matrix of the biomolecule.
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Affiliation(s)
- Dilek Odaci Demirkol
- Ege University Faculty of Science Biochemistry Department
- 35100 Bornova-Izmir, Turkey
| | - Huseyin Bekir Yildiz
- Karamanoglu Mehmetbey University
- Kamil Özdag Science Faculty
- Chemistry Department
- Karaman, Turkey
| | - Serkan Sayın
- Selcuk University Chemistry Department
- 42031 Konya, Turkey
| | - Mustafa Yilmaz
- Selcuk University Chemistry Department
- 42031 Konya, Turkey
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Jin HX, Liu ZQ, Hu ZC, Zheng YG. Biosynthesis of (R)-epichlorohydrin at high substrate concentration by kinetic resolution of racemic epichlorohydrin with a recombinant epoxide hydrolase. Eng Life Sci 2013. [DOI: 10.1002/elsc.201200179] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Huo-Xi Jin
- Institute of Bioengineering; Zhejiang University of Technology; Hangzhou P. R. China
- Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education; Zhejiang University of Technology; Hangzhou P. R. China
| | - Zhi-Qiang Liu
- Institute of Bioengineering; Zhejiang University of Technology; Hangzhou P. R. China
- Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education; Zhejiang University of Technology; Hangzhou P. R. China
| | - Zhong-Ce Hu
- Institute of Bioengineering; Zhejiang University of Technology; Hangzhou P. R. China
- Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education; Zhejiang University of Technology; Hangzhou P. R. China
| | - Yu-Guo Zheng
- Institute of Bioengineering; Zhejiang University of Technology; Hangzhou P. R. China
- Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education; Zhejiang University of Technology; Hangzhou P. R. China
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Cao J, Kürsten D, Schneider S, Knauer A, Günther PM, Köhler JM. Uncovering toxicological complexity by multi-dimensional screenings in microsegmented flow: modulation of antibiotic interference by nanoparticles. LAB ON A CHIP 2012; 12:474-484. [PMID: 22080187 DOI: 10.1039/c1lc20584f] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The technique of microsegmented flow was applied for the generation of two- and higher dimensional concentration spaces for the screening of toxic effects of selected substances on the bacterium Escherichia coli at the nanolitre scale. Up to about 5000 distinct experiments with different combinations of effector-concentrations could be realized in a single experimental run. This was done with the help of a computer program controlling the flow rates of effector-containing syringe pumps and resulted in the formation of multi-dimensional concentration spaces in segment sequences. Prior to the application of this technique for toxicological studies on E. coli the accuracy of this method was tested by simulation experiments with up to five dissolved dyes with different spectral properties. Photometric microflow-through measurement of dye distribution inside the concentration spaces allowed the monitoring of microfluid segment compositions. Finally, we used this technique for the investigation of interferences of the antibiotics ampicillin and chloramphenicol towards E. coli cultures and their modulation by silver nanoparticles by measuring bacterial autofluorescence. Each concentration point in this three-dimensional concentration space was represented by 4 or 5 single segments. Thus, a high reliability of the measured dose/response relations was achieved. As a result, a complex response pattern was discovered including synergistic and compensatory effects as well as the modulation of the range of stimulation of bacterial growth by a sublethal dose of chloramphenicol by silver nanoparticles.
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Affiliation(s)
- Jialan Cao
- Ilmenau University of Technology, Institute of Micro- and Nano technologies, Dept. of Physical Chemistry and Micro Reaction Technology, PF 10 05 65, 98694 Ilmenau, Germany
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