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Yi Y, Gong J, Shi K, Mei J, Ying G, Wu S. Isolation of antibody by polymer microspheres embedded with E. coli displaying IgG-binding domain. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1228:123825. [PMID: 37639993 DOI: 10.1016/j.jchromb.2023.123825] [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: 04/28/2023] [Revised: 06/23/2023] [Accepted: 07/06/2023] [Indexed: 08/31/2023]
Abstract
Antibody purification is an important aspect of quality and cost control in the production process of antibody drugs. In this study, modified E. coli was embedded into polymer microspheres (polyvinyl alcohol/alginate) for antibody separation and the IgG binding domain was displayed on the surface of E. coli. The results showed that ZZ protein (Fc binding domain of the antibody) was successfully displayed on the surface of E. coli and was embedded in polyvinyl alcohol/alginate microspheres. In addition, it has excellent specific adsorption capacity for antibodies, with a maximum adsorption capacity of 35.74 mg/g (wet microspheres). Through the adsorption isotherm and adsorption kinetics simulation, the adsorption of IgG on the microsphere matrix conforms to the Langmuir model and follows the pseudo-first-order kinetic equation. The microsphere matrix can undergo saturation adsorption at pH 7.2 and desorption at around pH 3.0. Desorption characteristics are consistent with those of rProtein A Sepharose FF®. After five cycles of the adsorption-desorption processes, the IgG adsorption capacity remains above 80%. Using polymer microspheres to separate antibodies from mouse ascites, the antibody purity reached 86.7% and the yield was 83.5%. These results provide an alternative to protein A matrix with low-cost, fast preparation and moderate efficiency.
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Affiliation(s)
- Yu Yi
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Junpeng Gong
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Kefan Shi
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Jianfeng Mei
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Guoqing Ying
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Shujiang Wu
- Biotest Biotech Co., Ltd, Hangzhou 310014, China.
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Salehi Z, Rasouli A, Doosthosseini H. p-nitrophenol Degradation Kinetics and Mass Transfer Study by Ralstonia eutropha as a Whole Cell Biocatalyst. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2019.1578808] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Zeinab Salehi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Ali Rasouli
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Hamid Doosthosseini
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
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3
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Güngörmüşler M, Tamayol A, Levin DB. Hydrogen Production by Immobilized Cells of Clostridium intestinale Strain URNW Using Alginate Beads. Appl Biochem Biotechnol 2021; 193:1558-1573. [PMID: 33484448 DOI: 10.1007/s12010-021-03503-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 01/07/2021] [Indexed: 12/01/2022]
Abstract
Biological hydrogen (H2) is a promising candidate for production of renewable hydrogen. Using entrapped cells rather than conventional suspended cell cultures for the production of H2 offers several advantages, such as improved production yields related to higher cell density, and enhanced resistance to substrate and end-product inhibition. In this study, H2 production by a novel isolate of Clostridium intestinale (strain URNW) was evaluated using cells entrapped within 2% calcium-alginate beads under strictly anaerobic conditions. Both immobilized cells and suspended cultures were studied in sequential batch-mode anaerobic fermentation over 192 h. The production of H2 in the headspace was examined for four different initial cellobiose concentrations (5, 10, 20, and 40 mM). Although a lag period for initiation of the fermentation process was observed for bacteria entrapped within hydrogel beads, the immobilized cells achieved both higher volumetric production rates (mmol H2/(L culture h)) and molar yields (mol H2/mol glucose equivalent) of H2 compared with suspended cultures. In the current study, the maximum cellobiose consumption rate of 0.40 mM/h, corresponding to 133.3 mg/(L h), was achieved after 72 h of fermentation by immobilized cells, generating a high hydrogen yield of 3.57 mol H2/mol cellobiose, whereas suspended cultures only yielded 1.77 mol H2/mol cellobiose. The results suggest that cells remain viable within the hydrogels and proliferated with a slow rate over the course of fermentation. The stable productivity of immobilized cells over 8 days with four changes of medium depicted that the immobilized cells of the isolated strain can successfully yield higher hydrogen and lower soluble metabolites than suspended cells suggesting a feasible process for future applications for bioH2 production.
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Affiliation(s)
- Mine Güngörmüşler
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, Manitoba, Canada. .,Department of Genetics and Bioengineering, Izmir University of Economics, Balçova, Izmir, Turkey.
| | - Ali Tamayol
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, Manitoba, Canada.,Department of Biomedical Engineering, University of Connecticut Health Center, Farmington, CT, USA
| | - David B Levin
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, Manitoba, Canada
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Bacon K, Lavoie A, Rao BM, Daniele M, Menegatti S. Past, Present, and Future of Affinity-based Cell Separation Technologies. Acta Biomater 2020; 112:29-51. [PMID: 32442784 PMCID: PMC10364325 DOI: 10.1016/j.actbio.2020.05.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 04/29/2020] [Accepted: 05/05/2020] [Indexed: 02/06/2023]
Abstract
Progress in cell purification technology is critical to increase the availability of viable cells for therapeutic, diagnostic, and research applications. A variety of techniques are now available for cell separation, ranging from non-affinity methods such as density gradient centrifugation, dielectrophoresis, and filtration, to affinity methods such as chromatography, two-phase partitioning, and magnetic-/fluorescence-assisted cell sorting. For clinical and analytical procedures that require highly purified cells, the choice of cell purification method is crucial, since every method offers a different balance between yield, purity, and bioactivity of the cell product. For most applications, the requisite purity is only achievable through affinity methods, owing to the high target specificity that they grant. In this review, we discuss past and current methods for developing cell-targeting affinity ligands and their application in cell purification, along with the benefits and challenges associated with different purification formats. We further present new technologies, like stimuli-responsive ligands and parallelized microfluidic devices, towards improving the viability and throughput of cell products for tissue engineering and regenerative medicine. Our comparative analysis provides guidance in the multifarious landscape of cell separation techniques and highlights new technologies that are poised to play a key role in the future of cell purification in clinical settings and the biotech industry. STATEMENT OF SIGNIFICANCE: Technologies for cell purification have served science, medicine, and industrial biotechnology and biomanufacturing for decades. This review presents a comprehensive survey of this field by highlighting the scope and relevance of all known methods for cell isolation, old and new alike. The first section covers the main classes of target cells and compares traditional non-affinity and affinity-based purification techniques, focusing on established ligands and chromatographic formats. The second section presents an excursus of affinity-based pseudo-chromatographic and non-chromatographic technologies, especially focusing on magnetic-activated cell sorting (MACS) and fluorescence-activated cell sorting (FACS). Finally, the third section presents an overview of new technologies and emerging trends, highlighting how the progress in chemical, material, and microfluidic sciences has opened new exciting avenues towards high-throughput and high-purity cell isolation processes. This review is designed to guide scientists and engineers in their choice of suitable cell purification techniques for research or bioprocessing needs.
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Affiliation(s)
- Kaitlyn Bacon
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA
| | - Ashton Lavoie
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA
| | - Balaji M Rao
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA; Biomanufacturing Training and Education Center (BTEC), North Carolina State University, Raleigh, NC 27695-7928, USA
| | - Michael Daniele
- Joint Department of Biomedical Engineering, North Carolina State University - University of North Carolina Chapel Hill, North Carolina, United States
| | - Stefano Menegatti
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA; Biomanufacturing Training and Education Center (BTEC), North Carolina State University, Raleigh, NC 27695-7928, USA.
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du Toit JP, Pott RWM. Transparent polyvinyl-alcohol cryogel as immobilisation matrix for continuous biohydrogen production by phototrophic bacteria. BIOTECHNOLOGY FOR BIOFUELS 2020; 13:105. [PMID: 32536970 PMCID: PMC7285740 DOI: 10.1186/s13068-020-01743-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 06/01/2020] [Indexed: 05/18/2023]
Abstract
BACKGROUND Phototrophic purple non-sulfur bacteria (PNSB) have gained attention for their ability to produce a valuable clean energy source in the form biohydrogen via photofermentation of a wide variety of organic wastes. For maturation of these phototrophic bioprocesses towards commercial feasibility, development of suitable immobilisation materials is required to allow continuous production from a stable pool of catalytic biomass in which energy is not diverted towards biomass accumulation, and optimal hydrogen production rates are realised. Here, the application of transparent polyvinyl-alcohol (PVA) cryogel beads to immobilisation of Rhodopseudomonas palustris for long-term hydrogen production is described. PVA cryogel properties are characterised and demonstrated to be well suited to the purpose of continuous photofermentation. Finally, analysis of the long-term biocompatibility of the material is illustrated. RESULTS The addition of glycerol co-solvent induces favourable light transmission properties in normally opaque PVA cryogels, especially well-suited to the near-infrared light requirements of PNSB. Material characterisation showed high mechanical resilience, low resistance to diffusion of substrates and high biocompatibility of the material and immobilisation process. The glycerol co-solvent in transparent cryogels offered additional benefit by reinforcing physical interactions to the extent that only a single freeze-thaw cycle was required to form durable cryogels, extending utility beyond only phototrophic bioprocesses. In contrast, conventional PVA cryogels require multiple cycles which compromise viability of entrapped organisms. Hydrogen production studies of immobilised Rhodopseudomonas palustris in batch photobioreactors showed higher specific hydrogen production rates which continued longer than planktonic cultures. Continuous cultivation yielded hydrogen production for at least 67 days from immobilised bacteria, demonstrating the suitability of PVA cryogel immobilisation for long-term phototrophic bioprocesses. Imaged organisms immobilised in cryogels showed a monolithic structure to PVA cryogels, and demonstrated a living, stable, photofermentative population after long-term immobilisation. CONCLUSION Transparent PVA cryogels offer ideal properties as an immobilisation matrix for phototrophic bacteria and present a low-cost photobioreactor technology for the further advancement of biohydrogen from waste as a sustainable energy source, as well as development of alternative photo-bioprocesses exploiting the unique capabilities of purple non-sulfur bacteria.
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Affiliation(s)
- Jan-Pierre du Toit
- Department of Process Engineering, Stellenbosch University, Banghoek Road, Stellenbosch, South Africa
| | - Robert W. M. Pott
- Department of Process Engineering, Stellenbosch University, Banghoek Road, Stellenbosch, South Africa
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Radosavljević M, Lević S, Belović M, Pejin J, Djukić-Vuković A, Mojović L, Nedović V. Immobilization of Lactobacillus rhamnosus in polyvinyl alcohol/calcium alginate matrix for production of lactic acid. Bioprocess Biosyst Eng 2019; 43:315-322. [PMID: 31605205 DOI: 10.1007/s00449-019-02228-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 09/06/2019] [Accepted: 09/29/2019] [Indexed: 12/11/2022]
Abstract
Immobilization of Lactobacillus rhamnosus ATCC7469 in poly(vinyl alcohol)/calcium alginate (PVA/Ca-alginate) matrix using "freezing-thawing" technique for application in lactic acid (LA) fermentation was studied in this paper. PVA/Ca-alginate beads were made from sterile and non-sterile PVA and sodium alginate solutions. According to mechanical properties, the PVA/Ca-alginate beads expressed a strong elastic character. Obtained PVA/Ca-alginate beads were further applied in batch and repeated batch LA fermentations. Regarding cell viability, L. rhamnosus cells survived well rather sharp immobilization procedure and significant cell proliferation was observed in further fermentation studies achieving high cell viability (up to 10.7 log CFU g-1) in sterile beads. In batch LA fermentation, the immobilized biocatalyst was superior to free cell fermentation system (by 37.1%), while the highest LA yield and volumetric productivity of 97.6% and 0.8 g L-1 h-1, respectively, were attained in repeated batch fermentation. During seven consecutive batch fermentations, the biocatalyst showed high mechanical and operational stability reaching an overall productivity of 0.78 g L-1 h-1. This study suggested that the "freezing-thawing" technique can be successfully used for immobilization of L. rhamnosus in PVA/Ca-alginate matrix without loss of either viability or LA fermentation capability.
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Affiliation(s)
- Miloš Radosavljević
- University of Novi Sad, Faculty of Technology Novi Sad, Bul. Cara Lazara 1, 21 000, Novi Sad, Serbia.
| | - Steva Lević
- University of Belgrade, Faculty of Agriculture, Nemanjina 6, 11 080, Belgrade, Serbia
| | - Miona Belović
- Institute of Food Technology in Novi Sad, University of Novi Sad, Bul. Cara Lazara 1, 21000, Novi Sad, Serbia
| | - Jelena Pejin
- University of Novi Sad, Faculty of Technology Novi Sad, Bul. Cara Lazara 1, 21 000, Novi Sad, Serbia
| | - Aleksandra Djukić-Vuković
- University of Belgrade, Faculty of Technology and Metallurgy, Karnegijeva 4, 11 000, Belgrade, Serbia
| | - Ljiljana Mojović
- University of Belgrade, Faculty of Technology and Metallurgy, Karnegijeva 4, 11 000, Belgrade, Serbia
| | - Viktor Nedović
- University of Belgrade, Faculty of Agriculture, Nemanjina 6, 11 080, Belgrade, Serbia
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Ruan B, Wu P, Chen M, Lai X, Chen L, Yu L, Gong B, Kang C, Dang Z, Shi Z, Liu Z. Immobilization of Sphingomonas sp. GY2B in polyvinyl alcohol-alginate-kaolin beads for efficient degradation of phenol against unfavorable environmental factors. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 162:103-111. [PMID: 29990721 DOI: 10.1016/j.ecoenv.2018.06.058] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 05/19/2018] [Accepted: 06/20/2018] [Indexed: 05/17/2023]
Abstract
In this study, batch experiments were carried out to evaluate the biodegradation of phenol by Sphingomonas sp. GY2B, which were immobilized in polyvinyl alcohol (PVA)-sodium alginate-kaolin beads under different conditions. The optimal degradation performance was achieved by GY2B immobilized in beads containing 1.0% (w/v) of kaolin, 10% (w/v) of PVA, 0.3% (w/v) of sodium alginate, 10% (v/v) of biomass dosage, and exposed to an initial phenol concentration of 100 mg/L. The experimental results indicated that PVA-sodium alginate-kaolin beads can accelerate the degradation rate of phenol by reducing the degradation time and also improve degradation rate. The biodegradation rate of phenol by immobilized cells (16.79 ± 0.81 mg/(L·h)) was significantly higher than that of free cells (11.49 ± 1.29 mg/(L·h)) under the above optimal conditions. GY2B immobilized on beads was more competent than free GY2B in degradation under conditions with high phenol concentrations (up to 300 mg/L) and in strong acidic (pH = 1) and alkaline (pH = 12) environments. Higher phenol concentrations inhibit the biomass and reduce the biodegradation rate, while the lower biodegradation rate at low initial phenol concentrations is attributed to mass transfer limitations. The Haldane inhibitory model was in agreement with the experimental data well, revealing that phenol showed a considerable inhibitory effect on the biodegradation by Sphingomonas sp. GY2B, especially at concentrations higher than 90 mg/L. Intra-particle diffusion model analysis suggests that adsorption of phenol by immobilized beads was controlled by both rapid surface adsorption as well as pore diffusion mechanism. It's worth noting that the presence of 1 mg/L Cr(VI) enhanced the biodegradation of phenol by free cells, while Cr(VI) showed no obvious impact on the removal of phenol by immobilized cells. In addition, immobilized cells were reused 16 times and removed 99.5% phenol, and when stored at 4 °C for 90 days, more than 99% phenol was removed. These results showed that immobilized cells can significantly improve the microbial degradation performance, and protect microorganisms against unfavorable environment. It is implied that PVA -sodium alginate-kaolin beads have great potential to be applied in a practical and economical phenolic wastewater treatment system.
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Affiliation(s)
- Bo Ruan
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China
| | - Pingxiao Wu
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China; Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China; Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, Guangzhou 510006, PR China.
| | - Meiqing Chen
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China
| | - Xiaolin Lai
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China
| | - Liya Chen
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China
| | - Langfeng Yu
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China
| | - Beini Gong
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China
| | - Chunxi Kang
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China
| | - Zhi Dang
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China; Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China
| | - Zhenqing Shi
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China; Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, Guangzhou 510006, PR China
| | - Zehua Liu
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China
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Degli Esposti M, Toselli M, Sabia C, Messi P, de Niederhäusern S, Bondi M, Iseppi R. Effectiveness of polymeric coated films containing bacteriocin-producer living bacteria for Listeria monocytogenes control under simulated cold chain break. Food Microbiol 2018; 76:173-179. [PMID: 30166138 DOI: 10.1016/j.fm.2018.05.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 05/11/2018] [Accepted: 05/16/2018] [Indexed: 11/26/2022]
Abstract
Nisin, enterocin 416K1 and living bacteriocin-producer Enterococcus casseliflavus IM 416K1 have been entrapped in polyvinyl alcohol (PVOH) based coatings applied to poly (ethylene terephthalate) (PET) films, and their effectiveness in the control of the growth of Listeria monocytogenes ATCC 19117 has been tested. The anti-listerial activity of the doped coated films was evaluated by both a modified agar diffusion assay and a direct contact with artificially contaminated precooked chicken fillets stored at 4 °C, 22 °C and under simulated cold chain break conditions (1 day at 30 °C). The live-Enterococcus-doped film showed a more remarkable activity than nisin- and enterocin-doped films over long times both at 4 °C and 22 °C. The use of this film at 22 °C resulted in full inactivation of L. monocytogenes from the seventh day of the test. Live-Enterococcus-doped film displayed a much better antilisterial activity in comparison to nisin- and enterocin-doped films also in samples incubated at 4 °C, and submitted at one day (3rd or 7th day) of storage at 30 °C, to simulate cold chain break conditions. All results suggest that the live-Enterococcus-doped film can behave as a smart active food packaging, very effective in cold chain break conditions when the Listeria growth is fast.
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Affiliation(s)
- Micaela Degli Esposti
- Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna, Via Terracini 28, 40131, Bologna, Italy
| | - Maurizio Toselli
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Via Terracini 28, 40131, Bologna, Italy
| | - Carla Sabia
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 287, 41125, Modena, Italy
| | - Patrizia Messi
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 287, 41125, Modena, Italy
| | - Simona de Niederhäusern
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 287, 41125, Modena, Italy
| | - Moreno Bondi
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 287, 41125, Modena, Italy.
| | - Ramona Iseppi
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 287, 41125, Modena, Italy
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Liao H, Liu Y, Wang Q, Duan W. Structure and properties of porous poly(vinyl alcohol) hydrogel beads prepared through a physical-chemical crosslinking method. J Appl Polym Sci 2018. [DOI: 10.1002/app.46402] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Honghui Liao
- Polymer Research Institute of Sichuan University; State Key Laboratory of Polymer Materials Engineering; Chengdu 610065 China
| | - Yuan Liu
- Polymer Research Institute of Sichuan University; State Key Laboratory of Polymer Materials Engineering; Chengdu 610065 China
| | - Qi Wang
- Polymer Research Institute of Sichuan University; State Key Laboratory of Polymer Materials Engineering; Chengdu 610065 China
| | - Wenfeng Duan
- State Key Laboratory of Special Functional Waterproof Materials; Beijing 101300 China
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10
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Lozinsky VI, Podorozhko EA, Nikitina YB, Klabukova LF, Vasil’ev VG, Burmistrov AA, Kondrashov YG, Vasiliev NK. A study of cryostructuring of polymer systems. 45. Effect of porosity of dispersed filler on physicochemical characteristics of composite poly(vinyl alcohol) cryogels. COLLOID JOURNAL 2017. [DOI: 10.1134/s1061933x17040081] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Wang W, Ding Y, Wang Y, Song X, Ambrose RF, Ullman JL. Intensified nitrogen removal in immobilized nitrifier enhanced constructed wetlands with external carbon addition. BIORESOURCE TECHNOLOGY 2016; 218:1261-1265. [PMID: 27396293 DOI: 10.1016/j.biortech.2016.06.135] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Revised: 06/28/2016] [Accepted: 06/30/2016] [Indexed: 06/06/2023]
Abstract
Nitrogen removal performance response of twelve constructed wetlands (CWs) to immobilized nitrifier pellets and different influent COD/N ratios (chemical oxygen demand: total nitrogen in influent) were investigated via 7-month experiments. Nitrifier was immobilized on a carrier pellet containing 10% polyvinyl alcohol (PVA), 2.0% sodium alginate (SA) and 2.0% calcium chloride (CaCl2). A batch experiment demonstrated that 73% COD and 85% ammonia nitrogen (NH4-N) were degraded using the pellets with immobilized nitrifier cells. In addition, different carbon source supplement strategies were applied to remove the nitrate (NO3-N) transformed from NH4-N. An increase in COD/N ratio led to increasing reduction in NO3-N. Efficient nitrification and denitrification promoted total nitrogen (TN) removal in immobilized nitrifier biofortified constructed wetlands (INB-CWs). The results suggested that immobilized nitrifier pellets combined with high influent COD/N ratios could effectively improve the nitrogen removal performance in CWs.
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Affiliation(s)
- Wei Wang
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China; Department of Environmental Health Sciences, University of California, Los Angeles, Los Angeles, CA 90095-1771, United States
| | - Yi Ding
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China; College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Yuhui Wang
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China.
| | - Xinshan Song
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China
| | - Richard F Ambrose
- Department of Environmental Health Sciences, University of California, Los Angeles, Los Angeles, CA 90095-1771, United States
| | - Jeffrey L Ullman
- Department of Biological Systems Engineering, Washington State University, P.O. Box 646120, Pullman, WA 99164, United States
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12
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Seker DC, Mohd Zain NA. Response surface optimization of glucose production from liquid pineapple waste using immobilized invertase in PVA–alginate–sulfate beads. Sep Purif Technol 2014. [DOI: 10.1016/j.seppur.2014.06.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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13
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Mirzaei M, Amoabediny G, Yazdian F, Sheikhpour M, Ebrahimi E, Zadeh BEH. An immobilized Thiobacillus thioparus biosensing system for monitoring sulfide hydrogen; optimized parameters in a bioreactor. Process Biochem 2014. [DOI: 10.1016/j.procbio.2013.12.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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14
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Podorozhko EA, D’yakonova EA, Kolosova OY, Klabukova LF, Lozinsky VI. A study of cryostructuring of polymer systems. 34. Poly(vinyl alcohol) composite cryogels filled with microparticles of polymer dispersion. COLLOID JOURNAL 2012. [DOI: 10.1134/s1061933x12060117] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Zain NAM, Suhaimi MS, Idris A. Development and modification of PVA–alginate as a suitable immobilization matrix. Process Biochem 2011. [DOI: 10.1016/j.procbio.2011.08.010] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Entrapment of Saccharomyces cerevisiae cells in u.v. crosslinked hydroxyethylcellulose/poly(ethylene oxide) double-layered gels. REACT FUNCT POLYM 2010. [DOI: 10.1016/j.reactfunctpolym.2010.09.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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17
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Bieler NC, Ansorge-Schumacher MB, Greiner L. Automated lab-scale production of PVA/PEG-enzyme immobilisates. Biotechnol J 2010; 5:881-5. [DOI: 10.1002/biot.201000070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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18
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Mohd Zain NA, Mohd Suardi S, Idris A. Hydrolysis of liquid pineapple waste by invertase immobilized in PVA–alginate matrix. Biochem Eng J 2010. [DOI: 10.1016/j.bej.2010.02.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Qin X, Wang J, Zheng G. Enantioselective Resolution of γ-Lactam by a Whole Cell of Microbacterium hydrocarbonoxydans (L29-9) Immobilized in Polymer of PVA–Alginate–Boric Acid. Appl Biochem Biotechnol 2010; 162:2345-54. [DOI: 10.1007/s12010-010-9007-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2010] [Accepted: 06/07/2010] [Indexed: 12/01/2022]
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20
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21
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Liu L, Shang L, Guo S, Li D, Liu C, Qi L, Dong S. Organic-inorganic hybrid material for the cells immobilization: long-term viability mechanism and application in BOD sensors. Biosens Bioelectron 2009; 25:523-6. [PMID: 19726176 DOI: 10.1016/j.bios.2009.08.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2009] [Revised: 07/18/2009] [Accepted: 08/03/2009] [Indexed: 11/27/2022]
Abstract
In this paper, organic-inorganic hybrid material, which is composed of silica and the grafting copolymer of poly (vinyl alcohol) and 4-vinylpyridine (PVA-g-P(4-VP)), was employed to immobilize Trichosporon cutaneum strain 2.570 cells. Cells entrapped into the hybrid material were found to keep a long-term viability. The mechanism of such a long-term viability was investigated by using confocal laser scanning microscopy (CLSM). Our studies revealed that arthroconidia produced in the extracellular material might play an important role in keeping the long-term viability of the immobilized microorganism. After the arthroconidia were activated, an electrochemical biochemical oxygen demand (BOD) sensor based on cell/hybrid material-modified supporting membrane was constructed for verifying the proposed mechanism. The results and insight gained from the present experiments can be widely used to various biosensor designs.
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Affiliation(s)
- Ling Liu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renming Street 5625, Changchun 130022, Jilin, PR China
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22
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Zhang Z, Lei Z, He X, Zhang Z, Yang Y, Sugiura N. Nitrate removal by Thiobacillus denitrificans immobilized on poly(vinyl alcohol) carriers. JOURNAL OF HAZARDOUS MATERIALS 2009; 163:1090-1095. [PMID: 18723283 DOI: 10.1016/j.jhazmat.2008.07.062] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2008] [Revised: 07/01/2008] [Accepted: 07/16/2008] [Indexed: 05/26/2023]
Abstract
Nitrate contamination is becoming a widespread environmental problem, and autotrophic denitrification with Thiobacillus denitrificans is a promising process considering efficiency, cost and maintenance. The denitrification efficiencies of T. denitrificans were compared in batch reactors between free cells and cells immobilized on polyvinyl alcohol (PVA) carriers made with thrice freezing/thawing and boric acid methods. The results indicated that the free cell reactor of T. denitrificans added with 10% (v/v) of PVA carrier made by thrice freezing/thawing (PVA-TFT) exhibited faster in S(2)O(3)(2-)-S consumption, SO(4)(2-) generation, and NO(3)(-)-N denitrification, with corresponding values being 165 mg (S(2)O(3)(2-)-S)/L.d, 491 mg (SO(4)(2-))/Ld, and 44 mg (NO(3)(-)-N)/Ld, which were increased by 50%, 61%, and 57% respectively compared to the control reactor with only free cells. Inhibition of denitrification by accumulated SO(4)(2-) in PVA-TFT reactor appeared at the concentration of approximately 6000 mg (SO(4)(2-))/L, and 75% of NO(3)(-)-N removal efficiency was achieved after 12d operation under the condition of initial 700 mg/L NO(3)(-)-N concentration.
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Affiliation(s)
- Zhenya Zhang
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba 305-8572, Japan
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23
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da Cunha MAA, Converti A, Santos JC, Ferreira STS, da Silva SS. PVA-Hydrogel Entrapped Candida Guilliermondii for Xylitol Production from Sugarcane Hemicellulose Hydrolysate. Appl Biochem Biotechnol 2008; 157:527-37. [DOI: 10.1007/s12010-008-8301-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2008] [Accepted: 06/17/2008] [Indexed: 10/21/2022]
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24
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Jungbauer A, Hahn R. Polymethacrylate monoliths for preparative and industrial separation of biomolecular assemblies. J Chromatogr A 2008; 1184:62-79. [DOI: 10.1016/j.chroma.2007.12.087] [Citation(s) in RCA: 182] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2007] [Revised: 12/04/2007] [Accepted: 12/19/2007] [Indexed: 11/28/2022]
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25
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26
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Zhang LS, Wu WZ, Wang JL. Immobilization of activated sludge using improved polyvinyl alcohol (PVA) gel. J Environ Sci (China) 2007; 19:1293-1297. [PMID: 18232221 DOI: 10.1016/s1001-0742(07)60211-3] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The microbial immobilization method using polyvinyl alcohol (PVA) gel as an immobilizing material was improved and used for entrapment of activated sludge. The oxygen uptake rate (OUR) was used to characterize the biological activity of immobilized activated sludge. Three kinds of PVA-immobilized particles of activated sludge, that is, PVA-boric acid beads, PVA-sodium nitrate beads and PVA-orthophosphate beads were prepared, and their biological activity was compared by measuring the OUR value. The bioactivity of both autotrophic and heterotrophic microorganisms of activated sludge was determined using different synthetic wastewater media (containing 250 mg/L COD and 25 mg/L NH(4+)-N). The experimental results showed that the bioactivity and stability of the three kinds of immobilized activated sludge was greatly improved after activation. With respect of the bioactivity and the mechanical stability, the PVA-orthophosphate method may be a promising and economical technique for microbial immobilization.
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Affiliation(s)
- Li-sheng Zhang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China.
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27
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Wang MY, Yu YT, Chang TMS. New method for preparing more stable microcapsules for the entrapment of genetically engineered cells. ACTA ACUST UNITED AC 2005; 33:257-69. [PMID: 16152691 DOI: 10.1081/bio-200066606] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In this paper, we studied a new preparation method of microcapsules for entrapment of genetically engineered cells. Polyvinyl alcohol microcapsules having well defined shape, high mechanical strength, good biochemical and permeability properties were prepared by using low temperature physical cross-linking method. Comparing with currently used alginate-polylysine-alginate microcapsules, polyvinyl alcohol microcapsules have much higher mechanical strength. The low temperature physical crosslinking procedure of polyvinyl alcohol is nontoxic to the genetically engineered E. coli DH5alpha cell, which attained high activity in decomposing and metabolizing urea in vitro studies.
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Affiliation(s)
- Man-Yan Wang
- The Key Laboratory of Bioactive Materials, Ministry of Education, Institute for Molecular Biology, Nankai University, Tianjin, China
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28
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Floriano PN, Christodoulides N, Romanovicz D, Bernard B, Simmons GW, Cavell M, McDevitt JT. Membrane-based on-line optical analysis system for rapid detection of bacteria and spores. Biosens Bioelectron 2005; 20:2079-88. [PMID: 15741078 DOI: 10.1016/j.bios.2004.08.046] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2004] [Revised: 08/06/2004] [Accepted: 08/24/2004] [Indexed: 10/26/2022]
Abstract
We report here the adaptation of our electronic microchip technology towards the development of a new method for detecting and enumerating bacterial cells and spores. This new approach is based on the immuno-localization of bacterial spores captured on a membrane filter microchip placed within a flow cell. A combination of microfluidic, optical, and software components enables the integration of staining of the bacterial species with fully automated assays. The quantitation of the analyte signal is achieved through the measurement of a collective response or alternatively through the identification and counting of individual spores and particles. This new instrument displays outstanding analytical characteristics, and presents a limit of detection of approximately 500 spores when tested with Bacillus globigii (Bg), a commonly used simulant for Bacillus anthracis (Ba), with a total analysis time of only 5 min. Additionally, the system performed well when tested with real postal dust samples spiked with Bg in the presence of other common contaminants. This new approach is highly customizable towards a large number of relevant toxic chemicals, environmental factors, and analytes of relevance to clinical chemistry applications.
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Affiliation(s)
- Pierre N Floriano
- Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, TX 78712, USA
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29
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Bajpai A, Saini R. Preparation and characterization of spongy cryogels of poly(vinyl alcohol)-casein system: water sorption and blood compatibility study. POLYM INT 2005. [DOI: 10.1002/pi.1773] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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30
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Szczęsna-Antczak M, Antczak T, Bielecki S. Stability of extracellular proteinase productivity by Bacillus subtilis cells immobilized in PVA-cryogel. Enzyme Microb Technol 2004. [DOI: 10.1016/j.enzmictec.2003.10.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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31
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Savina IN, Hanora A, Plieva FM, Galaev IY, Mattiasson B, Lozinsky VI. Cryostructuration of polymer systems. XXIV. Poly(vinyl alcohol) cryogels filled with particles of a strong anion exchanger: Properties of the composite materials and potential applications. J Appl Polym Sci 2004. [DOI: 10.1002/app.21227] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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32
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Szczęsna-Antczak M, Antczak T, Rzyska M, Bielecki S. Catalytic properties of membrane-bound Mucor lipase immobilized in a hydrophilic carrier. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s1381-1177(02)00176-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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