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Elmansy EA, Elkady EM, Asker MS, Abdallah NA, Khalil BE, Amer SK. Improved production of lactiplantibacillus plantarum RO30 exopolysaccharide (REPS) by optimization of process parameters through statistical experimental designs. BMC Microbiol 2023; 23:361. [PMID: 37993835 PMCID: PMC10664612 DOI: 10.1186/s12866-023-03117-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 11/08/2023] [Indexed: 11/24/2023] Open
Abstract
BACKGROUND In investigating of (exopolysaccharide) EPS from unconventional sources, lactic acid bacteria have a vital role due to their generally recognized as safe (GRAS) status. EPSs have diverse applications such as drug delivery, antimicrobial activity, surgical implants, and many more in many sectors. Despite being important, the main hindrance to the commercial application of these significant biopolymers is low productivity. Therefore, this study primarily focuses on optimizing physio-chemical conditions to maximize the previously produced EPS from probiotic Lactiplantibacillus plantarum RO30 (L. plantarum RO30) using one factor at a time (OFAT) and method Response Surface Methodology (RSM). RESULTS The EPS obtained from L. plantarum RO30 named REPS. The medium formulation for REPS production using the OFAT method revealed that sucrose (20 g/L, beef extract (25 g/L), and ammonium sulfate at 4 g/L concentration were the optimum carbon, organic and inorganic nitrogen sources, and REPS yield was increased up to 9.11 ± 0.51 g/L. RSM experiments revealed that, a greatly significant quadratic polynomial attained from the Central Composite Design (CCD) model was fruitful for specifying the most favorable cultural conditions that have significant consequences on REPS yield. The maximal amount of REPS (10.32 g/L) was formed by: sucrose (40 g/L), beef extract (25 g/L), pH (5.5), incubation temperature (30 °C), and incubation period (72 h). A high closeness was obtained between the predicted and experimental values and it displayed the efficiency of the RSM. CONCLUSION This study was conducted to reinforce REPS production in the probiotic LAB L. plantarum RO30 by utilizing various experimental parameters. The maximum REPS yield of 10.32 g/L was attained under the circumstances optimized in the study.
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Affiliation(s)
- Eman Ahmed Elmansy
- Microbial Biotechnology Department, Institute of Biotechnology Research, National Research Centre, El-Tahreer Street, Dokki, Cairo, Egypt.
| | - Ebtsam M Elkady
- Microbial Biotechnology Department, Institute of Biotechnology Research, National Research Centre, El-Tahreer Street, Dokki, Cairo, Egypt
| | - Mohsen S Asker
- Microbial Biotechnology Department, Institute of Biotechnology Research, National Research Centre, El-Tahreer Street, Dokki, Cairo, Egypt
| | - Nagwa A Abdallah
- Microbiology Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Bigad E Khalil
- Microbial Genetics Department, Institute Of Biotechnology Research, National Research Centre, El-Tahreer Street, Dokki, Cairo, Egypt
| | - Shaimaa K Amer
- Microbiology Department, Faculty of Science, Ain Shams University, Cairo, Egypt
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Sustainable applications of polyhydroxyalkanoates in various fields: A critical review. Int J Biol Macromol 2022; 221:1184-1201. [PMID: 36113591 DOI: 10.1016/j.ijbiomac.2022.09.098] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 09/06/2022] [Accepted: 09/10/2022] [Indexed: 01/23/2023]
Abstract
PHA is one of the most promising candidates in bio-polymer family which is biodegradable and environment-friendly in nature. In recent years, it has been applied as a biodegradable alternative for petroleum-based plastic across different domains. In literature, several research groups have scrutinised the biocompatibility and biodegradability of PHA in both in vivo settings as well as in in vitro conditions. Microbial yield polyhydroxyalkanoates (PHAs) are promoted at present as biodegradable plastics. On the other hand, only a limited number of products is being commercially manufactured out of PHAs (e.g., bottles). A succession of microbes (prokaryotes in addition to eukaryotes) has been identified as potential candidates that can disintegrate PHAs. These materials have been successfully employed in packaging industry, medical devices and implants, moulded goods, paper coatings, adhesives, performance additives, mulch films, non-woven fabrics, etc. The present paper reviews and focuses on the potential applications of PHA and its derivatives in different industries.
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Vosough PR, Edalatian Dovom MR, Habibi Najafi MB, Javadmanesh A, Mayo B. Biodiversity of exopolysaccharide-producing lactic acid bacteria from Iranian traditional Kishk and optimization of EPS yield by Enterococcus spp. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Almajed A, Srirama D, Moghal AAB. Response Surface Method Analysis of Chemically Stabilized Fiber-Reinforced Soil. MATERIALS 2021; 14:ma14061535. [PMID: 33801040 PMCID: PMC8003954 DOI: 10.3390/ma14061535] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 03/13/2021] [Accepted: 03/18/2021] [Indexed: 11/16/2022]
Abstract
One of the significant issues persisting in the study of soil stabilization is the establishment of the optimum proportions of the quantity of stabilizer to be added to the soil. Determining optimum solutions or the most feasible remedies for the utilization of stabilizing products in terms of their dose rates has become a significant concern in major civil engineering design projects. Using the response surface methodology, this study primarily focused on investigating the optimal levels of reinforcement fiber length (FL), fiber dosage (FD), and curing time (CT) for geotechnical parameters of stabilized soil. To realize this objective, an experimental study was undertaken on the California bearing ratio (CBR) and unconfined compressive strength (UCS). Hydraulic conductivity (HC) tests were also performed, with stabilizer proportions of 6–12 mm for the FL and 0.2–0.6% for the FD calculated for the total dry weight of soil and 6% lime (total weight of dry soil). The curing times used for testing were 0, 7, and 14 days for the CBR tests; 60, 210, and 360 days for the UCS tests; and 7, 17, and 28 days for the HC tests. All practical experiments were conducted with experimental techniques using stabilizer proportions and curing times. The FL, FD, CT, CBR, UCS, and HC response factors were determined using the central composite design. The results point toward a statistically significant model constructed (p ≤ 0.05) using the analysis of variance. The results from this optimization procedure show that the optimal values for the FL, FD, and CT were 11.1 mm, 0.5%, and 13.2 days, respectively, as these provided the maximum values for the CBR; 11.7 mm for the FL, 0.3% for the FD, and 160 days for the CT corresponded to the maximum values for the UCS; and 10.5 mm for the FL, 0.5% for the FD, and 15 days for the CT led to the minimum value for the HC. In practice, the suggested values may be useful for experiments, especially for preliminary assessments prior to stabilization.
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Affiliation(s)
- Abdullah Almajed
- Department of Civil Engineering, College of Civil Engineering, King Saud University, Riyadh 11421, Saudi Arabia
- Correspondence:
| | - Dinesh Srirama
- Department of Civil Engineering, National Institute of Technology, Warangal 506004, Telangana State, India; (D.S.); or (A.A.B.M.)
| | - Arif Ali Baig Moghal
- Department of Civil Engineering, National Institute of Technology, Warangal 506004, Telangana State, India; (D.S.); or (A.A.B.M.)
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Farag MM, Moghannem SA, Shehabeldine AM, Azab MS. Antitumor effect of exopolysaccharide produced by Bacillus mycoides. Microb Pathog 2020; 140:103947. [DOI: 10.1016/j.micpath.2019.103947] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 12/18/2019] [Accepted: 12/20/2019] [Indexed: 12/23/2022]
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de Paula BP, Chávez DWH, Lemos Junior WJF, Guerra AF, Corrêa MFD, Pereira KS, Coelho MAZ. Growth Parameters and Survivability of Saccharomyces boulardii for Probiotic Alcoholic Beverages Development. Front Microbiol 2019; 10:2092. [PMID: 31552002 PMCID: PMC6747048 DOI: 10.3389/fmicb.2019.02092] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Accepted: 08/26/2019] [Indexed: 01/26/2023] Open
Abstract
The aim of this research was to optimize the growth parameters (pH, ethanol tolerance, initial cell concentration and temperature) for Saccharomyces boulardii and its tolerance to in vitro gastrointestinal conditions for probiotic alcoholic beverage development. Placket-Burman screening was used to select only statistically significant variables, and the polynomial mathematical model for yeast growth was obtained by central composite rotatable design. Confirmation experiments to determine the kinetic parameters for yeast growth were carried out by controlling the temperature and pH. Soon after, the survivability of yeast was tested under in vitro conditions mimicking the human upper gastrointestinal transit. S. boulardii had suitable resistance to alcohol and gastrointestinal conditions for probiotic alcoholic beverage development.
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Affiliation(s)
- Breno Pereira de Paula
- Coordenadoria do Curso de Engenharia de Alimentos, Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Valença, Brazil.,Programa de Pós-Graduação em Ciência de Alimentos, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | - André Fioravante Guerra
- Coordenadoria do Curso de Engenharia de Alimentos, Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Valença, Brazil
| | | | | | - Maria Alice Zarur Coelho
- Programa de Pós-Graduação em Ciência de Alimentos, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Escola de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Grigore ME, Grigorescu RM, Iancu L, Ion RM, Zaharia C, Andrei ER. Methods of synthesis, properties and biomedical applications of polyhydroxyalkanoates: a review. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2019; 30:695-712. [DOI: 10.1080/09205063.2019.1605866] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Mădălina Elena Grigore
- "Evaluation and Conservation of Cultural Heritage” Research Group, National Institute for Research and Development in Chemistry and Petrochemistry, ICECHIM, Bucharest, Romania
| | - Ramona Marina Grigorescu
- "Evaluation and Conservation of Cultural Heritage” Research Group, National Institute for Research and Development in Chemistry and Petrochemistry, ICECHIM, Bucharest, Romania
| | - Lorena Iancu
- "Evaluation and Conservation of Cultural Heritage” Research Group, National Institute for Research and Development in Chemistry and Petrochemistry, ICECHIM, Bucharest, Romania
| | - Rodica-Mariana Ion
- "Evaluation and Conservation of Cultural Heritage” Research Group, National Institute for Research and Development in Chemistry and Petrochemistry, ICECHIM, Bucharest, Romania
- Valahia University, Materials Engineering Department, 13th Aleey Sinaia, Targoviste, Romania
| | - Cătălin Zaharia
- Advanced Polymer Materials Group, University Politehnica of Bucharest, Bucharest, Romania
| | - Elena Ramona Andrei
- "Evaluation and Conservation of Cultural Heritage” Research Group, National Institute for Research and Development in Chemistry and Petrochemistry, ICECHIM, Bucharest, Romania
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Panda I, Balabantaray S, Sahoo SK, Patra N. Mathematical model of growth and polyhydroxybutyrate production using microbial fermentation of Bacillus subtilis. CHEM ENG COMMUN 2017. [DOI: 10.1080/00986445.2017.1384923] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Ipsita Panda
- Bioprocess Lab, Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Odisha, India
| | - Soumyajit Balabantaray
- Graduate Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan
| | - Subhendu Kumar Sahoo
- Bioprocess Lab, Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Odisha, India
| | - Nivedita Patra
- Bioprocess Lab, Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Odisha, India
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Sood J, Sapra B, Tiwary AK. Microemulsion Transdermal Formulation for Simultaneous Delivery of Valsartan and Nifedipine: Formulation by Design. AAPS PharmSciTech 2017; 18:1901-1916. [PMID: 27858253 DOI: 10.1208/s12249-016-0658-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Accepted: 10/26/2016] [Indexed: 11/30/2022] Open
Abstract
The objective of the study was to optimize the proportion of different components for formulating oil in water microemulsion formulation meant for simultaneous transdermal delivery of two poorly soluble antihypertensive drugs. Surface response methodology of Box-Behnken design was utilized to evaluate the effect of two oils (Captex 500 - x1 and Capmul MCM - x2) and surfactant (Acrysol EL135 - x3) on response y1 (particle size), y2 (solubility of valsartan), and y3 (solubility of nifedipine). The important factors which significantly affected the responses were identified and validated using ANOVA. The model was diagnosed using normal plot of residuals and Box-Cox plot. The design revealed an inverse correlation between particle size and concentration of Capmul MCM and Acrysol EL 135. However, an increase in concentration of Captex 500 led to an increase in particle size of microemulsion. Solubility of valsartan decreased while that of nifedipine increased with increase in concentration of Captex 500. Capmul MCM played a significant role in increasing the solubility of valsartan. The effect of Acrysol EL 135 on solubility of both drugs, although significant, was only marginal as compared to that of Captex 500 and Capmul MCM. The optimized microemulsion was able to provide an enhancement ratio of 27.21 and 63.57-fold for valsartan and nifedipine, respectively, with respect to drug dispersion in aqueous surfactant system when evaluated for permeation studies. The current studies candidly suggest the scope of microemulsion systems for solubilizing as well as promoting the transport of both drugs across rat skin at an enhanced permeation rate.
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Yadav J, Balabantaray S, Patra N. Statistical optimization of fermentation conditions for the improved production of poly-β-hydroxybutyrate fromBacillus subtilis. CHEM ENG COMMUN 2017. [DOI: 10.1080/00986445.2017.1347094] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Jayprakash Yadav
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, India
| | - Soumyajit Balabantaray
- Graduate Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan
| | - Nivedita Patra
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, India
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Imran MYM, Reehana N, Jayaraj KA, Ahamed AAP, Dhanasekaran D, Thajuddin N, Alharbi NS, Muralitharan G. Statistical optimization of exopolysaccharide production by Lactobacillus plantarum NTMI05 and NTMI20. Int J Biol Macromol 2016; 93:731-745. [PMID: 27601132 DOI: 10.1016/j.ijbiomac.2016.09.007] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 08/31/2016] [Accepted: 09/02/2016] [Indexed: 10/21/2022]
Abstract
In this study, 27 strains of Lactic acid bacteria (LAB) were isolated and identified from different milk sources. All the isolates were biochemically characterized and screened for their ability to produce exopolysaccharides (EPS), among which two isolates namely Lactobacillus plantarum NTMI05 (197mg/L) and Lactobacillus plantarum NTMI20 (187mg/L) showed higher EPS production. Both the isolates were molecular characterized and tested for their probiotic properties. The chemical composition of EPS from L. plantarum NTMI05 and NTMI20 revealed the presence of 95.45% and 92.35% carbohydrates, 14±0.1and 11±0.15mg/L lactic acid, 10.5±0.2 and 9±0.1mg/mL of reducing sugar, respectively. HPLC analysis showed galactose at the retention time of 2.29.The maximum EPS yield was optimized for the media components like glucose (20g/L), yeast extract (25g/L) and ammonium sulphate (2g/L) using Central Composite Design and Response Surface Methodology (RSM). Under optimum conditions the predicted maximum EPS production was 0.891g/L, 0.797g/L, while the actual experimental value was 0.956g/L and 0.827g/L for L. plantarum NTMI05 and NTMI20, respectively. The antioxidant capacity was also evaluated by DPPH and reducing power assay proving the potentiality of these organisms in food and dairy industries.
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Affiliation(s)
- Mohamed Yousuff Mohamed Imran
- Department of Microbiology, School of Life Sciences, Bharathidasan University, Tiruchirappalli 620 024, Tamilnadu, India
| | - Nazar Reehana
- Department of Microbiology, School of Life Sciences, Bharathidasan University, Tiruchirappalli 620 024, Tamilnadu, India; P.G. and Research Department of Microbiology, Jamal Mohamed College (Autonomous), Tiruchirappalli 620 020, Tamilnadu, India
| | - K Arumugam Jayaraj
- Department of Microbiology, School of Life Sciences, Bharathidasan University, Tiruchirappalli 620 024, Tamilnadu, India
| | - Abdul Azees Parveez Ahamed
- Department of Microbiology, School of Life Sciences, Bharathidasan University, Tiruchirappalli 620 024, Tamilnadu, India
| | - Dharmadurai Dhanasekaran
- Department of Microbiology, School of Life Sciences, Bharathidasan University, Tiruchirappalli 620 024, Tamilnadu, India
| | - Nooruddin Thajuddin
- Department of Microbiology, School of Life Sciences, Bharathidasan University, Tiruchirappalli 620 024, Tamilnadu, India; Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Naiyf S Alharbi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Gangatharan Muralitharan
- Department of Microbiology, School of Life Sciences, Bharathidasan University, Tiruchirappalli 620 024, Tamilnadu, India.
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Modeling of microbial growth and ammonia consumption at different temperatures in the production of a polyhydroxyalkanoate (PHA) biopolymer. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.jart.2015.10.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Jalali-Heravi M, Arrastia M, Gomez FA. How Can Chemometrics Improve Microfluidic Research? Anal Chem 2015; 87:3544-55. [DOI: 10.1021/ac504863y] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Mehdi Jalali-Heravi
- Department
of Chemistry and
Biochemistry, California State University, Los Angeles, 5151 State
University Drive, Los Angeles, California 90032-8202, United States
| | - Mary Arrastia
- Department
of Chemistry and
Biochemistry, California State University, Los Angeles, 5151 State
University Drive, Los Angeles, California 90032-8202, United States
| | - Frank A. Gomez
- Department
of Chemistry and
Biochemistry, California State University, Los Angeles, 5151 State
University Drive, Los Angeles, California 90032-8202, United States
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Preparation of poly ethyleneimine (PEI))/nano titania (TiO2) multilayer film on quartz tube by layer-by-layer self-assembly and its applications for petroleum refinery wastewater treatment. J Taiwan Inst Chem Eng 2014. [DOI: 10.1016/j.jtice.2014.05.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Vera Candioti L, De Zan MM, Cámara MS, Goicoechea HC. Experimental design and multiple response optimization. Using the desirability function in analytical methods development. Talanta 2014; 124:123-38. [DOI: 10.1016/j.talanta.2014.01.034] [Citation(s) in RCA: 482] [Impact Index Per Article: 48.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 01/21/2014] [Accepted: 01/23/2014] [Indexed: 10/25/2022]
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16
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Mohammadi MM, Vossoughi M, Feilizadeh M, Rashtchian D, Moradi S, Alemzadeh I. Effects of electrophoretic deposition parameters on the photocatalytic activity of TiO2 films: Optimization by response surface methodology. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.03.048] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Process modeling and optimization of simultaneous direct conversion of CO2 and CH4 greenhouse gas mixture over TiO2/webnet photocatalyst. J Taiwan Inst Chem Eng 2014. [DOI: 10.1016/j.jtice.2013.09.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Amulya K, Reddy MV, Mohan SV. Acidogenic spent wash valorization through polyhydroxyalkanoate (PHA) synthesis coupled with fermentative biohydrogen production. BIORESOURCE TECHNOLOGY 2014; 158:336-342. [PMID: 24637295 DOI: 10.1016/j.biortech.2014.02.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Revised: 02/03/2014] [Accepted: 02/08/2014] [Indexed: 06/03/2023]
Abstract
The production of polyhydroxyalkanoates (PHAs) by Bacillus tequilensis biocatalyst using spent wash effluents as substrate was evaluated to increase the versatility of the existing PHA production process and reduce production cost. In this study, spent wash was used as a substrate for biohydrogen (H2) production and the resulting acidogenic effluents were subsequently employed as substrate for PHA production. Maximum H2 production of 39.8L and maximum PHA accumulation of 40% dry cell weight was attained. Good substrate removal associated with decrement in acidification (53% to 15%) indicates that the VFA generated were effectively utilized for PHA production. The PHA composition showed presence of copolymer [P (3HB-co-3HV)] with varying contents of hydroxybutyrate and hydroxyvalerate. The results obtained suggest that the use of spent wash effluents as substrate can considerably reduce the production cost of PHA with simultaneous waste valorization. PHA synthesis with B. tequilensis and spent wash effluents is reported for the first time.
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Affiliation(s)
- K Amulya
- Bioengineering and Environmental Centre (BEEC), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India
| | - M Venkateswar Reddy
- Bioengineering and Environmental Centre (BEEC), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India
| | - S Venkata Mohan
- Bioengineering and Environmental Centre (BEEC), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.
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Optimization of the hydrolysis of lignocellulosic residues by using radial basis functions modeling and particle swarm optimization. Biochem Eng J 2013. [DOI: 10.1016/j.bej.2013.09.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Gholamian S, Gholamian S, Nazemi A, Miri Nargesi M. Optimization of culture media for L-asparaginase production by newly isolated bacteria, Bacillus sp. GH5. Microbiology (Reading) 2013. [DOI: 10.1134/s0026261714010032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Paulo EM, Vasconcelos MP, Oliveira IS, Affe HMDJ, Nascimento R, Melo ISD, Roque MRDA, Assis SAD. An alternative method for screening lactic acid bacteria for the production of exopolysaccharides with rapid confirmation. FOOD SCIENCE AND TECHNOLOGY 2012. [DOI: 10.1590/s0101-20612012005000094] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The accumulation of exopolysaccharides (EPS) produced by microorganisms occurs in the presence of excess substrate and limiting conditions of elements that are essential to growth, such as nitrogen, phosphorus, sulfur, and magnesium. The presence of EPS produced by bacterial cells contributes to slime colonies formation in solid medium and increased viscosity in liquid medium. This paper proposes an alternative method for screening EPS-producing lactic acid bacteria using solid medium-containing discs of filter paper that are saturated with active cultures. The screening was carried out under different culture conditions varying the type of sugar, pH, and temperature. EPS production was visualized by the presence of mucoid colonies on the discs, which was confirmed by the formation of a precipitate when part of this colony was mixed with absolute alcohol. The established conditions for obtaining a high number of isolates producing EPS were 10% sucrose, pH 7.5 and 28 ºC. This method proved to be effective and economical because several strains could be tested on the same plate, with immediate confirmation.
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Modeling and optimization of poly(3hydroxybutyrate-co-3hydroxyvalerate) production from cane molasses by Azohydromonas lata MTCC 2311 in a stirred-tank reactor: effect of agitation and aeration regimes. ACTA ACUST UNITED AC 2012; 39:987-1001. [DOI: 10.1007/s10295-012-1102-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Accepted: 02/02/2012] [Indexed: 10/28/2022]
Abstract
Abstract
The effects of agitation and aeration rates on copolymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) [P(3HB-co-3HV)] production by Azohydromonas lata MTCC 2311 using cane molasses supplemented with propionic acid in a bioreactor were investigated. The experiments were conducted in a three-level factorial design by varying the impeller (150–500 rev min−1) and aeration (0.5–1.5 vvm) rates. Further, the data were fitted to mathematical models [quadratic polynomial equation and artificial neural network (ANN)] and process variables were optimized by genetic algorithm-coupled models. ANN and hybrid ANN-GA were found superior for modeling and optimization of process variables, respectively. The maximum copolymer concentration of 7.45 g l−1 with 21.50 mol% of 3HV was predicted at process variables: agitation speed, 287 rev min−1; and aeration rate, 0.85 vvm, which upon validation gave 7.20 g l−1 of P(3HB-co-3HV) with 21 mol% of 3HV with the prediction error (%) of 3.38 and 2.32, respectively. Agitation speed established a relative high importance of 72.19% than of aeration rate (27.80%) for copolymer accumulation. The volumetric gas–liquid mass transfer coefficient (k L a) was strongly affected by agitation and aeration rates. The highest P(3HB-co-3HV) productivity of 0.163 g l−1 h−1 was achieved at 0.17 s−1 of k L a value. During the early phase of copolymer production process, 3HB monomers were accumulated, which were shifted to 3HV units (9–21%) during the cultivation period of 24–42 h. The enhancement of 7.5 and 34% were reported for P(3HB-co-3HV) production and 3HV content, respectively, by hybrid ANN-GA paradigm, which revealed the significant utilization of cane molasses for improved copolymer production.
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Berezina N. Novel approach for productivity enhancement of polyhydroxyalkanoates (PHA) production by Cupriavidus necator DSM 545. N Biotechnol 2012; 30:192-5. [PMID: 22634022 DOI: 10.1016/j.nbt.2012.05.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2012] [Accepted: 05/14/2012] [Indexed: 11/16/2022]
Abstract
In the global context of increased concerns for our environment, the use of bioplastics as a replacement for existing petroleum-based polymers is an important challenge. Indeed, bioplastics hardly meet economical and technical constraints. One, of the most promising among currently studied bioplastics, is the polyhydroxyalkanoate (PHA). To circumvent the economical issue for this particular biopolymer one solution can be the enhancement of the overall productivity by the improvement of the nutritional medium of the microorganism producing the biopolymer. Thus, several nutrition media, supplemented or not with sodium glutamate, were tested for the growth and the PHA production by Cupriavidus necator DSM 545 strain. The most efficient for the biomass and the PHA production improvement were found to be the Luria broth (LB) and the Bonnarme's media, both supplemented with 10 g/L sodium glutamate. Hence the overall productivity was 33 times enhanced comparing to traditional cultivation methods. These results open a new route for the PHA production by C. necator which appears to be more suitable on a rich, or enriched, medium with no limiting factors.
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Process modeling and kinetic evaluation of petroleum refinery wastewater treatment in a photocatalytic reactor using TiO2 nanoparticles. POWDER TECHNOL 2012. [DOI: 10.1016/j.powtec.2012.01.003] [Citation(s) in RCA: 128] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zafar M, Kumar S, Kumar S, Dhiman AK. Artificial intelligence based modeling and optimization of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) production process by using Azohydromonas lata MTCC 2311 from cane molasses supplemented with volatile fatty acids: a genetic algorithm paradigm. BIORESOURCE TECHNOLOGY 2012; 104:631-641. [PMID: 22074908 DOI: 10.1016/j.biortech.2011.10.024] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2011] [Revised: 10/07/2011] [Accepted: 10/08/2011] [Indexed: 05/31/2023]
Abstract
The present work describes the optimization of medium variables for the production of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) [P(3HB-co-3HV)] by Azohydromonas lata MTCC 2311 using cane molasses supplemented with propionic acid. Genetic algorithm (GA) has been used for the optimization of P(3HB-co-3HV) production through the simulation of artificial neural network (ANN) and response surface methodology (RSM). The predictions by ANN are better than those of RSM and in good agreement with experimental findings. The highest P(3HB-co-3HV) concentration and 3HV content have been reported as 7.35 g/l and 16.84 mol%, respectively by hybrid ANN-GA. Upon validation, 7.20 g/l and 16.30 mol% of P(3HB-co-3HV) concentration and 3HV content have been found in the shake flask, whereas 6.70 g/l and 16.35 mol%, have been observed in a 3 l bioreactor, respectively. The specific growth rate and P(3HB-co-3HV) accumulation rate of 0.29 per h and 0.16 g/lh determined with cane molasses are comparable to those observed on pure substrates.
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Affiliation(s)
- Mohd Zafar
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee-247 667 (Uttarakhand), India
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Krishnaiah D, Sarbatly R, Anisuzzaman SM, Madais E. Study on car shampoo formulation using D-optimal statistical design. INTERNATIONAL JOURNAL OF INDUSTRIAL CHEMISTRY 2012. [DOI: 10.1186/2228-5547-3-31] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Optimization of polyhydroxybutyrate (PHB) production by Azohydromonas lata MTCC 2311 by using genetic algorithm based on artificial neural network and response surface methodology. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2012. [DOI: 10.1016/j.bcab.2011.08.012] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Rodríguez-Carmona E, Bastida J, Manresa A. Utilization of Agro-industrial Residues for Poly(3-hydroxyalkanoate) Production by Pseudomonas aeruginosa 42A2 (NCIMB 40045): Optimization of Culture Medium. J AM OIL CHEM SOC 2011. [DOI: 10.1007/s11746-011-1897-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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A Statistical Approach for Optimization of Polyhydroxybutyrate Production by Bacillus sphaericus NCIM 5149 under Submerged Fermentation Using Central Composite Design. Appl Biochem Biotechnol 2009; 162:996-1007. [DOI: 10.1007/s12010-009-8807-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2009] [Accepted: 09/28/2009] [Indexed: 10/20/2022]
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Ahmad AL, Low SC, Abd Shukor SR, Ismail A. Optimization of Membrane Formulation and Process Variables via Crossed-Design Concept in Design of Experimental (DOE). SEP SCI TECHNOL 2009. [DOI: 10.1080/01496390903014573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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31
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Ahmad A, Low S, Shukor SA, Ismail A. Optimization of membrane performance by thermal-mechanical stretching process using responses surface methodology (RSM). Sep Purif Technol 2009. [DOI: 10.1016/j.seppur.2008.11.007] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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32
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Deepak V, Kalishwaralal K, Ramkumarpandian S, Babu SV, Senthilkumar SR, Sangiliyandi G. Optimization of media composition for Nattokinase production by Bacillus subtilis using response surface methodology. BIORESOURCE TECHNOLOGY 2008; 99:8170-8174. [PMID: 18430568 DOI: 10.1016/j.biortech.2008.03.018] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2007] [Revised: 03/08/2008] [Accepted: 03/11/2008] [Indexed: 05/26/2023]
Abstract
Response surface methodology and central composite rotary design (CCRD) was employed to optimize a fermentation medium for the production of Nattokinase by Bacillus subtilis at pH 7.5. The four variables involved in this study were Glucose, Peptone, CaCl2, and MgSO4. The statistical analysis of the results showed that, in the range studied; only peptone had a significant effect on Nattokinase production. The optimized medium containing (%) Glucose: 1, Peptone: 5.5, MgSO4: 0.2 and CaCl2: 0.5 resulted in 2-fold increased level of Nattokinase (3194.25U/ml) production compared to initial level (1599.09U/ml) after 10h of fermentation. Nattokinase production was checked with fibrinolytic activity.
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Affiliation(s)
- V Deepak
- Department of Biotechnology, Kalasalingam University, Krishnankoil 626190, Viruthunagar District, Tamil Nadu, India
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Kek YK, Lee WH, Sudesh K. Efficient bioconversion of palm acid oil and palm kernel acid oil to poly(3-hydroxybutyrate) by Cupriavidus necator. CAN J CHEM 2008. [DOI: 10.1139/v08-001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Efficient bioconversion of palm oil by-products to green materials serves as a prominent way to overcome wastage. Generally, major palm oil by-products such as palm acid oil (PAO) and palm kernel acid oil (PKAO) are used for animal feed. This pioneer study investigated the ability of Cupriavidus necator H16 (ATCC 17699) (formerly Ralstonia eutropha) to biologically convert these by-products to poly(3-hydroxybutyrate) [P(3HB)]. P(3HB) was synthesized when PAO or PKAO was fed as the sole carbon source. However, it was found that PKAO is superior with respect to higher amount of P(3HB) accumulation in 48 h (85 wt% of the dry cell mass). In addition, important culture parameters were identified, such as nitrogen sources and ratio of culture volume to flask volume, which significantly affected the P(3HB) content. The nitrogen concentration in the culture medium is very crucial in promoting the biosynthesis of P(3HB). The highest P(3HB) yield (3.1 g/L) was initiated at 4 mmol/L of urea. Less than 0.4 g/L of P(3HB) was obtained when 30.0 mmol/L or higher urea concentrations were used. This study has identified a suitable process to produce high P(3HB) yield from major palm oil by-products. It is also demonstrated that C. necator H16 has suitable metabolic pathways that allow the conversion of palm oil by-products to P(3HB) effectively. Hereby, surplus palm oil by-products can be converted to a relatively high-value and sustainable product.Key words: poly(3-hydroxybutyrate), palm oil, palm acid oil, palm kernel acid oil, Cupriavidus necator.
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Sabra W, Hassan M. Exopolysaccharide Yield as a Kinetic Parameter for the Statistical Optimization of EPS Production by Klebsiella pneumoniae. ACTA ACUST UNITED AC 2008. [DOI: 10.3923/biotech.2008.27.34] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Coulembier O, Delva X, Hedrick JL, Waymouth RM, Dubois P. Synthesis of Biomimetic Poly(hydroxybutyrate): Alkoxy- and Carboxytriazolines as Latent Ionic Initiator. Macromolecules 2007. [DOI: 10.1021/ma071575k] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Olivier Coulembier
- Center of Innovation and Research in MAterials and Polymers (CIRMAP), Laboratory of Polymeric and Composite Materials, University of Mons-Hainaut, Place du Parc 20, Mons, 7000, Belgium, IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, and Center for Polymeric Interfaces and Macromolecular Assemblies, Department of Chemistry, Stanford University, Stanford, California 94305
| | - Xavier Delva
- Center of Innovation and Research in MAterials and Polymers (CIRMAP), Laboratory of Polymeric and Composite Materials, University of Mons-Hainaut, Place du Parc 20, Mons, 7000, Belgium, IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, and Center for Polymeric Interfaces and Macromolecular Assemblies, Department of Chemistry, Stanford University, Stanford, California 94305
| | - James L. Hedrick
- Center of Innovation and Research in MAterials and Polymers (CIRMAP), Laboratory of Polymeric and Composite Materials, University of Mons-Hainaut, Place du Parc 20, Mons, 7000, Belgium, IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, and Center for Polymeric Interfaces and Macromolecular Assemblies, Department of Chemistry, Stanford University, Stanford, California 94305
| | - Robert M. Waymouth
- Center of Innovation and Research in MAterials and Polymers (CIRMAP), Laboratory of Polymeric and Composite Materials, University of Mons-Hainaut, Place du Parc 20, Mons, 7000, Belgium, IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, and Center for Polymeric Interfaces and Macromolecular Assemblies, Department of Chemistry, Stanford University, Stanford, California 94305
| | - Philippe Dubois
- Center of Innovation and Research in MAterials and Polymers (CIRMAP), Laboratory of Polymeric and Composite Materials, University of Mons-Hainaut, Place du Parc 20, Mons, 7000, Belgium, IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, and Center for Polymeric Interfaces and Macromolecular Assemblies, Department of Chemistry, Stanford University, Stanford, California 94305
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Moreira GA, Micheloud GA, Beccaria AJ, Goicoechea HC. Optimization of the Bacillus thuringiensis var. kurstaki HD-1 δ-endotoxins production by using experimental mixture design and artificial neural networks. Biochem Eng J 2007. [DOI: 10.1016/j.bej.2006.12.025] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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37
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Coulembier O, Lohmeijer BGG, Dove AP, Pratt RC, Mespouille L, Culkin DA, Benight SJ, Dubois P, Waymouth RM, Hedrick JL. Alcohol Adducts of N-Heterocyclic Carbenes: Latent Catalysts for the Thermally-Controlled Living Polymerization of Cyclic Esters. Macromolecules 2006. [DOI: 10.1021/ma0611366] [Citation(s) in RCA: 124] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Olivier Coulembier
- Laboratory of Polymeric and Composite Materials (LPCM), University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, and Stanford University, Department of Chemistry, Stanford, California 94305
| | - Bas G. G. Lohmeijer
- Laboratory of Polymeric and Composite Materials (LPCM), University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, and Stanford University, Department of Chemistry, Stanford, California 94305
| | - Andrew P. Dove
- Laboratory of Polymeric and Composite Materials (LPCM), University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, and Stanford University, Department of Chemistry, Stanford, California 94305
| | - Russell C. Pratt
- Laboratory of Polymeric and Composite Materials (LPCM), University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, and Stanford University, Department of Chemistry, Stanford, California 94305
| | - Laetitia Mespouille
- Laboratory of Polymeric and Composite Materials (LPCM), University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, and Stanford University, Department of Chemistry, Stanford, California 94305
| | - Darcy A. Culkin
- Laboratory of Polymeric and Composite Materials (LPCM), University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, and Stanford University, Department of Chemistry, Stanford, California 94305
| | - Stephanie J. Benight
- Laboratory of Polymeric and Composite Materials (LPCM), University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, and Stanford University, Department of Chemistry, Stanford, California 94305
| | - Philippe Dubois
- Laboratory of Polymeric and Composite Materials (LPCM), University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, and Stanford University, Department of Chemistry, Stanford, California 94305
| | - Robert M. Waymouth
- Laboratory of Polymeric and Composite Materials (LPCM), University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, and Stanford University, Department of Chemistry, Stanford, California 94305
| | - James L. Hedrick
- Laboratory of Polymeric and Composite Materials (LPCM), University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, and Stanford University, Department of Chemistry, Stanford, California 94305
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