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Effect of electroporation in a continuous flow system on bioaccumulation of magnesium, zinc and calcium ions in Lactobacillus rhamnosus B 442 cells. Bioelectrochemistry 2021; 140:107769. [PMID: 33631416 DOI: 10.1016/j.bioelechem.2021.107769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 01/21/2021] [Accepted: 02/03/2021] [Indexed: 11/23/2022]
Abstract
Biomass of Lactobacillus rhamnosus B 442 was subjected to the continuous electroporation using an electroporator with a flow chamber (length of 10 cm, distance between electrodes 0.25 cm, stream width 0.25 cm, flow speed 10 mL/min) to improve accumulation of calcium, magnesium and zinc in the cells. For all tested ions, the following parameters were applied: voltage of 250 V (E = 1 kV/cm), 570 V (E = 2.28 kV/cm), 950 V (E = 3.8 kV/cm), and 1400 V (E = 5.6 kV/cm, the positive control), a frequency of 10 Hz, a pulse width of 100 µs and 30 electrical pulses. The use of PEF increased the accumulation of magnesium, zinc and calcium by 39, 73 and 162%, respectively, compared to the control. Positive correlation was found between ion accumulation and membrane permeability for zinc and magnesium. For calcium, the initial increase in permeability resulted in higher ion accumulation, but with a further increase of this parameter at 3.8 kV/cm, its decrease was observed caused by a drop in cell viability. Total number of bacteria ranged from 1.67 × 108 (for the cultures supplemented with calcium) to 1.34 × 1012 cfu/mL (for the cultures supplemented with magnesium).
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Costa OYA, Oguejiofor C, Zühlke D, Barreto CC, Wünsche C, Riedel K, Kuramae EE. Impact of Different Trace Elements on the Growth and Proteome of Two Strains of Granulicella, Class "Acidobacteriia". Front Microbiol 2020; 11:1227. [PMID: 32625179 PMCID: PMC7315648 DOI: 10.3389/fmicb.2020.01227] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 05/14/2020] [Indexed: 12/24/2022] Open
Abstract
Acidobacteria represents one of the most dominant bacterial groups across diverse ecosystems. However, insight into their ecology and physiology has been hampered by difficulties in cultivating members of this phylum. Previous cultivation efforts have suggested an important role of trace elements for the proliferation of Acidobacteria, however, the impact of these metals on their growth and metabolism is not known. In order to gain insight into this relationship, we evaluated the effect of trace element solution SL10 on the growth of two strains (5B5 and WH15) of Acidobacteria belonging to the genus Granulicella and studied the proteomic responses to manganese (Mn). Granulicella species had highest growth with the addition of Mn, as well as higher tolerance to this metal compared to seven other metal salts. Variations in tolerance to metal salt concentrations suggests that Granulicella sp. strains possess different mechanisms to deal with metal ion homeostasis and stress. Furthermore, Granulicella sp. 5B5 might be more adapted to survive in an environment with higher concentration of several metal ions when compared to Granulicella sp. WH15. The proteomic profiles of both strains indicated that Mn was more important in enhancing enzymatic activity than to protein expression regulation. In the genomic analyses, we did not find the most common transcriptional regulation of Mn homeostasis, but we found candidate transporters that could be potentially involved in Mn homeostasis for Granulicella species. The presence of such transporters might be involved in tolerance to higher Mn concentrations, improving the adaptability of bacteria to metal enriched environments, such as the decaying wood-rich Mn environment from which these two Granulicella strains were isolated.
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Affiliation(s)
- Ohana Y A Costa
- Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, Netherlands.,Institute of Biology Leiden, Leiden University, Leiden, Netherlands
| | - Chidinma Oguejiofor
- Department of Soil Science and Meteorology, Michael Okpara University of Agriculture, Umudike, Nigeria
| | - Daniela Zühlke
- Institute of Microbiology, University of Greifswald, Greifswald, Germany
| | - Cristine C Barreto
- Genomic Sciences and Biotechnology Program, Catholic University of Brasilia, Distrito Federal, Brazil
| | - Christine Wünsche
- Institute of Microbiology, University of Greifswald, Greifswald, Germany
| | - Katharina Riedel
- Institute of Microbiology, University of Greifswald, Greifswald, Germany
| | - Eiko E Kuramae
- Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, Netherlands.,Ecology and Biodiversity, Institute of Environmental Biology, Utrecht University, Utrecht, Netherlands
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Thi Nguyen HY, Tran GB. Optimization of Fermentation Conditions and Media for Production of Glucose Isomerase from Bacillus megaterium Using Response Surface Methodology. SCIENTIFICA 2018; 2018:6842843. [PMID: 30245905 PMCID: PMC6139186 DOI: 10.1155/2018/6842843] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 08/07/2018] [Indexed: 06/08/2023]
Abstract
Glucose isomerase is an enzyme widely used in food industry for producing high-fructose corn syrup. Many microbes, including Bacillus megaterium, have been found to be able to produce glucose isomerase. However, the number of studies of glucose isomerase production from Bacillus megaterium is limited. In this study, we establish the optimal medium components and culture conditions for Bacillus megaterium glucose isomerase production by evaluating the combined influence of multiple factors and different parameters via Plackett-Burman design and response surface methodology in Modde 5.0 software. The optimized conditions, which were experimentally confirmed as follows: D-xylose (1.116%), K2HPO4 (0.2%), MgSO4·7H2O (0.1%), yeast extract (1.161%), peptone (1%), pH 7.0, inoculum size 20% (w/v), shaking 120 rpm at 36.528°C for 48 hours, give rise to production of highest activity of glucose isomerase (0.274 ± 0.003 U/mg biomass). These results provide additional important information for future development of large-scale glucose isomerase production by Bacillus megaterium.
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Affiliation(s)
- Hoang-Yen Thi Nguyen
- Institute of Biotechnology and Food-Technology, Industrial University of Ho Chi Minh City, 12 Nguyen Van Bao Street, Go Vap, Ho Chi Minh, Vietnam
| | - Gia-Buu Tran
- Institute of Biotechnology and Food-Technology, Industrial University of Ho Chi Minh City, 12 Nguyen Van Bao Street, Go Vap, Ho Chi Minh, Vietnam
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Góral M, Pankiewicz U. Effect of Pulsed Electric Fields (PEF) on Accumulation of Magnesium in Lactobacillus rhamnosus B 442 Cells. J Membr Biol 2017; 250:565-572. [PMID: 28871398 PMCID: PMC5613034 DOI: 10.1007/s00232-017-9986-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 08/30/2017] [Indexed: 01/13/2023]
Abstract
The aim of this study was to determine the effect of pulsed electric fields (PEF) on accumulation of magnesium ions in Lactobacillus rhamnosus B 442 cells. Under optimized conditions, this is, on 15 min exposure of the 20 h grown culture to PEF of the 2.0 kV/cm and 20 µs pulse width at concentration 400 μg Mg2+/mL medium, accumulation of magnesium in the biomass reached maximum 4.28 mg/g d.m. Optimization of PEF parameters caused an increase of magnesium concentration in the cells by 220% in comparison to the control not treated with PEF. Bacterial cell biomass enriched with Mg2+ may be an alternative for pharmacological supplementation applied in deficiency of this cation.
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Affiliation(s)
- Małgorzata Góral
- Department of Analysis and Food Quality Assessment, Faculty of Food Science and Biotechnology, University of Life Sciences, Skromna Street 8, 20-704, Lublin, Poland.
| | - Urszula Pankiewicz
- Department of Analysis and Food Quality Assessment, Faculty of Food Science and Biotechnology, University of Life Sciences, Skromna Street 8, 20-704, Lublin, Poland
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Kycia K, Bzducha-Wróbel A, Kraśniewska K, Chlebowska-Śmigiel A, Gniewosz M. Effect of Magnesium Acetate on the Antimold Activity of Lactobacillus. J Food Prot 2017; 80:96-103. [PMID: 28221876 DOI: 10.4315/0362-028x.jfp-16-125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The antimold activity of lactic acid bacteria (LAB) is used in food biopreservation. The aim of this study was to evaluate the effect of magnesium acetate added to de Man Rogosa Sharpe (MRS) medium on the antimold activity of three LAB strains ( Lactobacillus plantarum , Lactobacillus brevis , and Lactobacillus fermentum ) against molds contaminating food ( Aspergillus oryzae , Aspergillus niger , Penicillium chrysogenum , Fusarium avenaceum , and Rhizopus arrhizus ) and their ability to produce organic acids (acetic acid, lactic acid, and phenyllactic acid). The antimold activity of LAB strains was evaluated using the overlay method, and the concentration of the organic acids was determined with the gas chromatography technique. Changes in viable cell counts and the pH of LAB culture also were monitored over a 48-h period. The results show that the growth inhibition of all the molds (except R. arrhizus ) was higher in LAB strain cultures on MRS with magnesium acetate agar than on MRS agar, and inhibition increased over the 48 h. Magnesium acetate added to MRS broth stimulated the production of acetic acid by all LAB strains in the first 8 h and slightly stimulated the production of lactic acid by L. plantarum during the first 24 h. No adverse effect of magnesium acetate on growth of LAB strains was noted. The results confirm that magnesium acetate enhances the antimold activity of LAB strains.
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Affiliation(s)
- Katarzyna Kycia
- Department of Biotechnology, Microbiology and Food Evaluation, Warsaw University of Life Sciences-SGGW, 02-767 Warsaw, Nowoursynowska 159C Street, Poland
| | - Anna Bzducha-Wróbel
- Department of Biotechnology, Microbiology and Food Evaluation, Warsaw University of Life Sciences-SGGW, 02-767 Warsaw, Nowoursynowska 159C Street, Poland
| | - Karolina Kraśniewska
- Department of Biotechnology, Microbiology and Food Evaluation, Warsaw University of Life Sciences-SGGW, 02-767 Warsaw, Nowoursynowska 159C Street, Poland
| | - Anna Chlebowska-Śmigiel
- Department of Biotechnology, Microbiology and Food Evaluation, Warsaw University of Life Sciences-SGGW, 02-767 Warsaw, Nowoursynowska 159C Street, Poland
| | - Małgorzata Gniewosz
- Department of Biotechnology, Microbiology and Food Evaluation, Warsaw University of Life Sciences-SGGW, 02-767 Warsaw, Nowoursynowska 159C Street, Poland
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Li RF, Wang B, Liu S, Chen SH, Yu GH, Yang SY, Huang L, Yin YL, Lu ZF. Optimization of the Expression Conditions of CGA-N46 in Bacillus subtilis DB1342(p-3N46) by Response Surface Methodology. Interdiscip Sci 2015; 8:277-83. [PMID: 26341498 PMCID: PMC4982894 DOI: 10.1007/s12539-015-0115-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 01/04/2015] [Accepted: 01/30/2015] [Indexed: 12/12/2022]
Abstract
CGA-N46 is a small antifungal-derived peptide and consists of the 31st–76th amino acids of the N-terminus of human chromogranin A. Polycistronic expression of recombinant CGA-N46 in Bacillus subtilis DB1342 was used to improve its production, but the yield of CGA-N46 was still low. In the present study, response surface methodology (RSM) was used to optimize culture medium composition and growth conditions of the engineered strain B. subtilis DB1342(p-3N46) for the further increase in CGA-N46 yield. The results of two-level factorial experiments indicated that dextrin and tryptone were significant factors affecting CGA-N46 expression. Central composite design (CCD) was used to determine the ideal conditions of each significant factors. From the results of CCD, the optimal medium composition was predicted to be dextrin 16.6 g/L, tryptone 19.2 g/L, KH2PO4·H2O 6 g/L, pH 6.5. And the optimal culture process indicated inoculation of B. subtilis DB1342(p-3N46) seed culture into fresh culture medium at 5 % (v/v), followed by expression of CGA-N46 for 56 hours at 30 °C induced by 2 % (v/v) sucrose after one hour of shaking culture. To test optimal CGA-N46 peptide expression, the yeast growth inhibition assay was employed and it was found that under optimal culture conditions, CGA-N46 inhibited the growth of Candida albican by 42.17, 30.86 % more than that in the pre-optimization conditions. In summary, RSM can be used to optimize expression conditions of CGA-N46 in engineered strains B. subtilis DB1342(p-3N46).
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Affiliation(s)
- Rui-Fang Li
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China.
| | - Bin Wang
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Shuai Liu
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Shi-Hua Chen
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Guang-Hai Yu
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Shuo-Ye Yang
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Liang Huang
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Yan-Li Yin
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Zhi-Fang Lu
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China
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Li RF, Wang B, Liu S, Chen SH, Yu GH, Yang SY, Huang L, Yin YL, Lu ZF. Optimization of the expression conditions of CGA-N46 in Bacillus subtilis DB1342(p-3N46) by response surface methodology. Interdiscip Sci 2015. [PMID: 25682381 DOI: 10.1007/s12539-014-0250-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 01/04/2015] [Accepted: 01/30/2015] [Indexed: 09/29/2022]
Abstract
CGA-N46 is a small antifungal derived peptide and consists of the 31st to 76th amino acids of the N-terminus of human chromogranin A. Polycistronic expression of recombinant CGA-N46 in Bacillus subtilis DB1342 was used to improve its production, but the yield of CGA-N46 was still low. In the present study, response surface methodology (RSM) was used to optimize culture medium composition and growth conditions of the engineered strain B. subtilis DB1342(p-3N46) for the further increase of CGA-N46 yield. The results of two-level factorial experiments indicated that dextrin and tryptone were significant factors affecting CGA-N46 expression. Central composite design (CCD) was used to determine the ideal conditions of each significant factors. From the results of CCD, the optimal medium composition was predicted to be dextrin 16.6 g/L, tryptone 19.2 g/L, KH2PO4·3H2O 6 g/L, pH 6.5. And the optimal culture process was indicated that B. subtilis DB1342(p-3N46) seed culture was inoculated into fresh culture medium at 5% (v/v), followed by expression of CGA-N46 for 56 hours at 30°C induced by 2% (v/v) sucrose after one hour of shaking culture. To test optimal CGA-N46 peptide expression, the yeast growth inhibition assay was employed and it was found that under optimal culture conditions, CGA-N46 inhibited the growth of C. albican by 42.17%, 30.86% more than that in the pre-optimization conditions. In summary, RSM can be used to optimize expression conditions of CGA-N46 in engineered strains B. subtilis DB1342(p-3N46).
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Affiliation(s)
- Rui-Fang Li
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China,
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Zhang Y, Ng IS, Yao C, Lu Y. Orthogonal array deciphering MRS medium requirements for isolated Lactobacillus rhamnosus ZY with cell properties characterization. J Biosci Bioeng 2014; 118:298-304. [DOI: 10.1016/j.jbiosc.2014.02.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Revised: 01/29/2014] [Accepted: 02/18/2014] [Indexed: 10/25/2022]
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Lew LC, Choi SB, Khoo BY, Liong MT. Mn2+ and Mg2+ improved sphingomyelinase production by Lactobacillus rhamnosus FTDC 8313 and binding affinity to sphingomyelin for generation of ceramides. Process Biochem 2013. [DOI: 10.1016/j.procbio.2013.09.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Lew LC, Liong MT, Gan CY. Growth optimization of Lactobacillus rhamnosus
FTDC 8313 and the production of putative dermal bioactives in the presence of manganese and magnesium ions. J Appl Microbiol 2012; 114:526-35. [DOI: 10.1111/jam.12044] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Revised: 10/04/2012] [Accepted: 10/15/2012] [Indexed: 11/30/2022]
Affiliation(s)
- L.-C. Lew
- School of Industrial Technology; UniversitiSains Malaysia; Penang 11800 USM Malaysia
| | - M.-T. Liong
- School of Industrial Technology; UniversitiSains Malaysia; Penang 11800 USM Malaysia
| | - C.-Y. Gan
- Doping Control Centre; UniversitiSains Malaysia; Penang 11800 USM Malaysia
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Optimization of Fermentation Medium for the Production of Glucose Isomerase Using Streptomyces sp. SB-P1. BIOTECHNOLOGY RESEARCH INTERNATIONAL 2012; 2012:874152. [PMID: 22900192 PMCID: PMC3412087 DOI: 10.1155/2012/874152] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Accepted: 05/14/2012] [Indexed: 11/22/2022]
Abstract
The combination of medium ingredients has a profound influence on the metabolic pathways running in the microorganism which regulates the production of numerous metabolites. Glucose isomerase (GI), an enzyme with huge potential in the market, can isomerise glucose into fructose. GI is used widely for the production of High-Fructose Corn Syrup (HFCS). HFCS is used as a sweetener in food and pharmaceutical industries. Streptomyces are well-known producers of numerous enzymes including glucose isomerase. An array of 75 isolates was screened for the production of glucose isomerase. The isolate Streptomyces sp. SB-P1 was found to produce maximum amount of extracellular GI. Sucrose and raffinose among pure carbon sources and corn cob and wheat husk among crude agro residues were found to yield high enzyme titers. Potassium nitrate among pure nitrogen sources and soy residues among crude sources gave maximum production. Quantitative effect of carbon, nitrogen, and inducer on GI was also determined. Plackett-Burman design was used to study the effect of different medium ingredients. Sucrose and xylose as carbon sources and peptone and soy residues as nitrogen sources proved to be beneficial for GI production.
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