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Chen X, Guo Y, Yang T, Wan J, Cao X. Separation of antibody IgG201 by an aqueous two-phase system with recyclable pH-responsive polymers. Process Biochem 2022. [DOI: 10.1016/j.procbio.2021.12.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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2
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Ravindran B, Wong JWC, Selvam A, Thirunavukarasu K, Sekaran G. Microbial biodegradation of proteinaceous tannery solid waste and production of a novel value added product - Metalloprotease. BIORESOURCE TECHNOLOGY 2016; 217:150-156. [PMID: 27005792 DOI: 10.1016/j.biortech.2016.03.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 03/03/2016] [Accepted: 03/04/2016] [Indexed: 06/05/2023]
Abstract
In this study, animal fleshing (ANFL) was utilized as a substrate for the production of extracellular protease by Clostridium limosum through central composite rotatable design (CCRD) and response surface methodology (RSM). Optimum protease production of 433U/ml was achieved and the purified enzyme was identified as acidic metalloprotease, a monomeric protein. The molecular weight of the enzyme was 71kDa, whose activity was enhanced by bivalent metals such as Zn(2+) and Mg(2+). Scanning electron microscopy (SEM) examination also revealed the hydrolysis/microbial degradation of ANFL through protease activity in the anaerobic fermentation process. Simultaneous hydrolysis of ANFL and production of an enzyme with the potential for different industrial applications provide an attractive methodology for the disposal of tannery solid waste.
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Affiliation(s)
- Balasubramani Ravindran
- Animal Environment Division, Department of Animal Biotechnology and Environment, National Institute of Animal Science, RDA, Jeonju, South Korea.
| | - Jonathan W C Wong
- Sino-Forest Applied Research Centre for Pearl River Delta Environment, and Department of Biology, Hong Kong Baptist University, Hong Kong Special Administrative Region
| | - Ammaiyappan Selvam
- Sino-Forest Applied Research Centre for Pearl River Delta Environment, and Department of Biology, Hong Kong Baptist University, Hong Kong Special Administrative Region
| | | | - Ganesan Sekaran
- Environmental Technology Division, Central Leather Research Institute, Chennai, India
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3
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Rengifo AFC, Ferreira GMD, Ferreira GMD, da Silva MCH, de Paula Rezende J, dos Santos Pires AC, da Silva LHM. Driving forces for chymosin partitioning on the macromolecule-salt aqueous two phase system. FOOD AND BIOPRODUCTS PROCESSING 2016. [DOI: 10.1016/j.fbp.2016.08.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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4
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Ozturkoglu-Budak S, Wiebenga A, Bron PA, de Vries RP. Protease and lipase activities of fungal and bacterial strains derived from an artisanal raw ewe's milk cheese. Int J Food Microbiol 2016; 237:17-27. [PMID: 27541978 DOI: 10.1016/j.ijfoodmicro.2016.08.007] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2016] [Revised: 08/07/2016] [Accepted: 08/08/2016] [Indexed: 11/30/2022]
Abstract
We previously identified the microbiota present during cheese ripening and observed high protease and lipase activity in Divle Cave cheese. To determine the contribution of individual isolates to enzyme activities, we investigated a range of species representing this microbiota for their proteolytic and lipolytic ability. In total, 17 fungal, 5 yeast and 18 bacterial strains, previously isolated from Divle Cave cheese, were assessed. Qualitative protease and lipase activities were performed on skim-milk agar and spirit-blue lipase agar, respectively, and resulted in a selection of strains for quantitative assays. For the quantitative assays, the strains were grown on minimal medium containing irradiated Divle Cave cheese, obtained from the first day of ripening. Out of 16 selected filamentous fungi, Penicillium brevicompactum, Penicillium cavernicola and Penicillium olsonii showed the highest protease activity, while Mucor racemosus was the best lipase producer. Yarrowia lipolytica was the best performing yeast with respect to protease and lipase activity. From the 18 bacterial strains, 14 and 11 strains, respectively showed protease and lipase activity in agar plates. Micrococcus luteus, Bacillus stratosphericus, Brevibacterium antiquum, Psychrobacter glacincola and Pseudomonas proteolytica displayed the highest protease and lipase activity. The proteases of yeast and filamentous fungi were identified as mainly aspartic protease by specific inhibition with Pepstatin A, whereas inhibition by PMSF (phenylmethylsulfonyl fluoride) indicated that most bacterial enzymes belong to serine type protease. Our results demonstrate that aspartic proteases, which usually have high milk clotting activity, are predominantly derived from fungal strains, and therefore fungal enzymes appear to be more suitable for use in the cheese industry. Microbial enzymes studied in this research might be alternatives for rennin (chymosin) from animal source because of their low cost and stable availability. Future studies will aim to purify these enzymes to test their suitability for use in similar artisanal cheeses or in large scale commercial cheeses.
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Affiliation(s)
- Sebnem Ozturkoglu-Budak
- Fungal Physiology, CBS-KNAW Fungal Biodiversity Centre & Fungal Molecular Physiology, Utrecht University, 3584 CT Utrecht, The Netherlands; Department of Dairy Technology, Faculty of Agriculture, University of Ankara, 06110, Ankara, Turkey.
| | - Ad Wiebenga
- Fungal Physiology, CBS-KNAW Fungal Biodiversity Centre & Fungal Molecular Physiology, Utrecht University, 3584 CT Utrecht, The Netherlands.
| | - Peter A Bron
- NIZO food research, Kernhemseweg 2, 6718ZB Ede, The Netherlands.
| | - Ronald P de Vries
- Fungal Physiology, CBS-KNAW Fungal Biodiversity Centre & Fungal Molecular Physiology, Utrecht University, 3584 CT Utrecht, The Netherlands.
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5
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Prediction of partition coefficients of guanidine hydrochloride in PEG–phosphate systems using neural networks developed with differential evolution algorithm. J IND ENG CHEM 2015. [DOI: 10.1016/j.jiec.2015.01.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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6
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Selective Separation of Mono Glyceryl Ferulate Using Water from an Ionic Liquid Solution of Enzymatic Transesterification. J AM OIL CHEM SOC 2014. [DOI: 10.1007/s11746-014-2491-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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7
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Interfacial partitioning behaviour of bovine serum albumin in polymer-salt aqueous two-phase system. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 934:71-8. [DOI: 10.1016/j.jchromb.2013.06.034] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 06/25/2013] [Accepted: 06/30/2013] [Indexed: 11/17/2022]
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8
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Lima CA, Júnior ACF, Filho JLL, Converti A, Marques DAV, Carneiro-da-Cunha MG, Porto ALF. Two-phase partitioning and partial characterization of a collagenase from Penicillium aurantiogriseum URM4622: Application to collagen hydrolysis. Biochem Eng J 2013. [DOI: 10.1016/j.bej.2013.03.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Lee JW, Forciniti D. Effect of glycosylation on the partition behavior of a human antibody in aqueous two-phase systems. Biotechnol Prog 2013; 29:943-50. [DOI: 10.1002/btpr.1741] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 03/24/2013] [Indexed: 01/26/2023]
Affiliation(s)
- J.-W. Lee
- Chemical and Biochemical Engineering Dept.; Missouri University of Science and Technology; Rolla MO 65409
| | - D. Forciniti
- Chemical and Biochemical Engineering Dept.; Missouri University of Science and Technology; Rolla MO 65409
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Rodríguez-Durán LV, Spelzini D, Boeris V, Aguilar CN, Picó GA. Partition in aqueous two-phase system: Its application in downstream processing of tannase from Aspergillus niger. Colloids Surf B Biointerfaces 2013; 101:392-7. [DOI: 10.1016/j.colsurfb.2012.07.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Revised: 06/04/2012] [Accepted: 07/18/2012] [Indexed: 11/26/2022]
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11
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Nascimento KS, Cunha AI, Nascimento KS, Cavada BS, Azevedo AM, Aires-Barros MR. An overview of lectins purification strategies. J Mol Recognit 2012; 25:527-41. [DOI: 10.1002/jmr.2200] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kelany S. Nascimento
- Institute for Biotechnology and Bioengineering (IBB), Centre for Biological and Chemical Engineering, Department of Bioengineering, Instituto Superior Técnico; Technical University of Lisbon; Av. Rovisco Pais; 1049-001; Lisbon; Portugal
| | - Ana I. Cunha
- Institute for Biotechnology and Bioengineering (IBB), Centre for Biological and Chemical Engineering, Department of Bioengineering, Instituto Superior Técnico; Technical University of Lisbon; Av. Rovisco Pais; 1049-001; Lisbon; Portugal
| | - Kyria S. Nascimento
- Biochemistry and Molecular Biology Department; Federal University of Ceará (UFC); CEP 60.455-970; Fortaleza; Ceará; Brazil
| | - Benildo S. Cavada
- Biochemistry and Molecular Biology Department; Federal University of Ceará (UFC); CEP 60.455-970; Fortaleza; Ceará; Brazil
| | - Ana M. Azevedo
- Institute for Biotechnology and Bioengineering (IBB), Centre for Biological and Chemical Engineering, Department of Bioengineering, Instituto Superior Técnico; Technical University of Lisbon; Av. Rovisco Pais; 1049-001; Lisbon; Portugal
| | - Maria Raquel Aires-Barros
- Institute for Biotechnology and Bioengineering (IBB), Centre for Biological and Chemical Engineering, Department of Bioengineering, Instituto Superior Técnico; Technical University of Lisbon; Av. Rovisco Pais; 1049-001; Lisbon; Portugal
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12
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13
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Isolation of a Aspergillus niger lipase from a solid culture medium with aqueous two-phase systems. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:2135-41. [DOI: 10.1016/j.jchromb.2011.05.042] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Revised: 05/27/2011] [Accepted: 05/27/2011] [Indexed: 11/22/2022]
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14
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Porfiri MC, Picó G, Romanini D, Farruggia B. Aspergillus oryzae alpha-amylase partition in potassium phosphate-polyethylene glycol aqueous two-phase systems. Int J Biol Macromol 2011; 49:7-13. [DOI: 10.1016/j.ijbiomac.2011.03.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2010] [Revised: 03/02/2011] [Accepted: 03/04/2011] [Indexed: 10/18/2022]
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15
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Lu Y, Lu W, Wang W, Guo Q, Yang Y. Thermodynamic studies of partitioning behavior of cytochrome c in ionic liquid-based aqueous two-phase system. Talanta 2011; 85:1621-6. [PMID: 21807231 DOI: 10.1016/j.talanta.2011.06.058] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2011] [Revised: 06/20/2011] [Accepted: 06/22/2011] [Indexed: 11/28/2022]
Abstract
The ionic liquid/aqueous two-phase extraction systems (ATPSs) based on imidazolium ionic liquids were used to extract cytochrome c. Effects of the alkyl chain length of the ionic liquid cations, concentration of potassium citrate, temperature and pH on the extraction efficiency have been investigated. The thermodynamic parameters (ΔG(T)°, ΔH(T)° and ΔS(T)°) associated with Cyt-c partitioning in aqueous two phase systems were determined. Thermodynamic studies indicated that the partitioning of Cyt-c was driven by both hydrophobic and electrostatic interactions in the extraction process. Under the optimum conditions, experiment results showed that 94% of the cytochrome c could be extracted into the ionic liquid-rich phase in a one-step extraction. The structural characterization of Cyt-c in the IL ATPS was investigated by UV-vis and circular dichroism (CD) spectra. The results demonstrated that no direct bonding interaction observed between ionic liquid and cytochrome c, while the native properties of the cytochrome c were not altered. Compared with traditional liquid-liquid extractions based on toxic organic solvents, ionic liquid/aqueous two phase extraction offers clear advantages due to no use of volatile organic solvent and low consumption of imidazolium ionic liquids.
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Affiliation(s)
- Yanmin Lu
- Key Laboratory for Special Functional Aggregated Materials of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University, Jinan, PR China
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16
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Sampaio e Silva TA, Knob A, Tremacoldi CR, Brochetto-Braga MR, Carmona EC. Purification and some properties of an extracellular acid protease from Aspergillus clavatus. World J Microbiol Biotechnol 2011. [DOI: 10.1007/s11274-011-0717-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Conformational Flexibility of Lipase Lip1 from Candida Rugosa Studied by Electronic Spectroscopies and Thermodynamic Approaches. Protein J 2011; 30:77-83. [DOI: 10.1007/s10930-011-9313-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Sarangi BK, Pattanaik DP, Rathinaraj K, Sachindra NM, Madhusudan MC, Mahendrakar NS. Purification of alkaline protease from chicken intestine by aqueous two phase system of polyethylene glycol and sodium citrate. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2011; 48:36-44. [PMID: 23572714 PMCID: PMC3551078 DOI: 10.1007/s13197-010-0137-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 02/17/2010] [Accepted: 10/05/2010] [Indexed: 11/26/2022]
Abstract
An aqueous two phase system of polyethylene glycol (PEG) and salts was evaluated for separation and purification of alkaline proteases from chicken intestine. Among the different salts evaluated potassium phosphate and sodium citrate gave higher enzyme yield (73.5% and 69.7% respectively) and enzyme purification (5.3 and 7.4 fold) in PEG rich upper phase. Increase in concentration of sodium citrate in the system resulted in reduction in enzyme yield and enzyme purification factor, with 15% salt showing highest enzyme yield (59.8%) and purification (6.7 fold). Initial protein concentration in the system did not show any specific trend on the partition behavior of the enzyme. The temperature at which the system is incubated did not show any significant (p ≥ 0.05) effect on enzyme partition and purification. Increasing the PEG concentration in the system from 15 to 25% resulted in reduction in enzyme yield from 53.7 to 21.9% and enzyme purification from 5 fold to 1.4 fold in PEG rich upper phase. pH also had a significant (p < 0.05) effect on the partition of the enzyme to the upper phase with highest purification (3.4 fold) at pH 9.0 and higher enzyme yield (46.2%) at pH 10.
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Affiliation(s)
- B. K. Sarangi
- />Department of Meat, Fish and Poultry Technology, Central Food Technological Research Institute (Council of Scientific and Industrial Research), Mysore, 570020 India
| | - D. P. Pattanaik
- />Department of Meat, Fish and Poultry Technology, Central Food Technological Research Institute (Council of Scientific and Industrial Research), Mysore, 570020 India
| | - K. Rathinaraj
- />Department of Meat, Fish and Poultry Technology, Central Food Technological Research Institute (Council of Scientific and Industrial Research), Mysore, 570020 India
| | - N. M. Sachindra
- />Department of Meat, Fish and Poultry Technology, Central Food Technological Research Institute (Council of Scientific and Industrial Research), Mysore, 570020 India
| | - M. C. Madhusudan
- />Department of Food Engineering, Central Food Technological Research Institute (Council of Scientific and Industrial Research), Mysore, 570020 India
| | - N. S. Mahendrakar
- />Department of Meat, Fish and Poultry Technology, Central Food Technological Research Institute (Council of Scientific and Industrial Research), Mysore, 570020 India
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19
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The partitioning of protease from Calotropis procera latex by aqueous two-phase systems and its hydrolytic pattern on muscle proteins. FOOD AND BIOPRODUCTS PROCESSING 2011. [DOI: 10.1016/j.fbp.2010.02.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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20
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Two phase partitioning and collagen hydrolysis of bromelain from pineapple peel Nang Lae cultivar. Biochem Eng J 2010. [DOI: 10.1016/j.bej.2010.08.012] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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21
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Nascimento KS, Azevedo AM, Cavada BS, Aires-Barros MR. Partitioning ofCanavalia brasiliensisLectin in Polyethylene Glycol – Sodium Citrate Aqueous Two-Phase Systems. SEP SCI TECHNOL 2010. [DOI: 10.1080/01496395.2010.507446] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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22
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Extraction of Bovine Serum Albumin Using Reverse Micelles Formed by Hexadecyl Trimethyl Ammonium Chloride. Appl Biochem Biotechnol 2010; 163:744-55. [PMID: 20835915 DOI: 10.1007/s12010-010-9079-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Accepted: 09/01/2010] [Indexed: 10/19/2022]
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23
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Ganesh Kumar A, Perinbam K, Kamatchi P, Nagesh N, Sekaran G. In situ immobilization of acid protease on mesoporous activated carbon packed column for the production of protein hydrolysates. BIORESOURCE TECHNOLOGY 2010; 101:1377-1379. [PMID: 19796934 DOI: 10.1016/j.biortech.2009.09.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2009] [Revised: 09/02/2009] [Accepted: 09/03/2009] [Indexed: 05/28/2023]
Abstract
The mesoporous activated carbon (MAC) was used as a support material for in situ immobilization of acid protease (AP). The optimum temperature for the activities of both free and immobilized AP was found to be 50 degrees C. The catalytic efficiency of AP-MAC system has significantly been maintained for more than ten consecutive reaction cycles. The functional groups and surface morphology of the AP, MAC and AP-MAC were observed by Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The production of protein hydrolysates was carried out from bovine serum albumin (BSA) using AP-MAC packed column and its properties were studied.
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Affiliation(s)
- A Ganesh Kumar
- Department of Biomedical Engineering, Sathyabama University, Rajiv Gandhi Road, Chennai 600 119, India.
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24
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Candida rugosa lipase Lip1–polyethyleneglycol interaction and the relation with its partition in aqueous two-phase systems. Colloids Surf B Biointerfaces 2010; 75:532-7. [DOI: 10.1016/j.colsurfb.2009.09.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2009] [Revised: 09/22/2009] [Accepted: 09/22/2009] [Indexed: 11/22/2022]
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25
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Direct purification of Burkholderia Pseudomallei lipase from fermentation broth using aqueous two-phase systems. BIOTECHNOL BIOPROC E 2010. [DOI: 10.1007/s12257-008-0306-y] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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26
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Boeris V, Spelzini D, Farruggia B, Picó G. Aqueous two-phase extraction and polyelectrolyte precipitation combination: A simple and economically technologies for pepsin isolation from bovine abomasum homogenate. Process Biochem 2009. [DOI: 10.1016/j.procbio.2009.07.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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27
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28
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Nalinanon S, Benjakul S, Visessanguan W, Kishimura H. Partitioning of protease from stomach of albacore tuna (Thunnus alalunga) by aqueous two-phase systems. Process Biochem 2009. [DOI: 10.1016/j.procbio.2008.12.018] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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29
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Kumar AG, Swarnalatha S, Kamatchi P, Sekaran G. Immobilization of high catalytic acid protease on functionalized mesoporous activated carbon particles. Biochem Eng J 2009. [DOI: 10.1016/j.bej.2008.09.017] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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30
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Pei Y, Wang J, Wu K, Xuan X, Lu X. Ionic liquid-based aqueous two-phase extraction of selected proteins. Sep Purif Technol 2009. [DOI: 10.1016/j.seppur.2008.10.010] [Citation(s) in RCA: 291] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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31
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Spelzini D, Peleteiro J, Picó G, Farruggia B. Polyethyleneglycol–pepsin interaction and its relationship with protein partitioning in aqueous two-phase systems. Colloids Surf B Biointerfaces 2008; 67:151-6. [DOI: 10.1016/j.colsurfb.2008.06.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2008] [Revised: 06/02/2008] [Accepted: 06/20/2008] [Indexed: 11/24/2022]
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32
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da Silva CAS, Coimbra JSR, Rojas EEG, Minim LA, da Silva LHM. Partitioning of caseinomacropeptide in aqueous two-phase systems. J Chromatogr B Analyt Technol Biomed Life Sci 2007; 858:205-10. [PMID: 17869592 DOI: 10.1016/j.jchromb.2007.08.033] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2007] [Revised: 08/17/2007] [Accepted: 08/26/2007] [Indexed: 10/22/2022]
Abstract
This study evaluates the influence of type of salt and temperature on the partition coefficient of caseinomacropetide (CMP) to determine the best conditions for the recovery of CMP in aqueous two-phase systems (ATPS) composed by poly(ethylene glycol) (PEG) 1500 and an inorganic salt (potassium phosphate, sodium citrate, lithium sulfate or sodium sulfate). In all systems, CMP presented affinity for the PEG-rich phase. The PEG1500+lithium sulfate showed the highest values of partitioning coefficient. In addition, thermodynamic parameters (DeltaH degrees , DeltaS degrees , DeltaG degrees) as a function of temperature, were calculated for the system PEG1500-sodium citrate at different PEG concentrations and the results imply thermodynamic differences between partitioning of CMP in this system.
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Affiliation(s)
- César A Sodré da Silva
- Separation Process Laboratory (LPS), Department of Food Technology, Federal University of Viçosa (UFV), P. H. Rolfs Av., s/n, 36570-000 Viçosa, MG, Brazil
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Mohamadi HS, Omidinia E, Dinarvand R. Evaluation of recombinant phenylalanine dehydrogenase behavior in aqueous two-phase partitioning. Process Biochem 2007. [DOI: 10.1016/j.procbio.2007.06.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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34
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Silva LHMD, Silva MCHD, Aquino RAND, Francisco KR, Cardoso MVC, Minim LA, Coimbra JSR. Nitroprusside−PEO Enthalpic Interaction as a Driving Force for Partitioning of the [Fe(CN)5NO]2- Anion in Aqueous Two-Phase Systems Formed by Poly(ethylene oxide) and Sulfate Salts. J Phys Chem B 2006; 110:23540-6. [PMID: 17107209 DOI: 10.1021/jp0643909] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ions are known to concentrate in the salt-enriched phase of aqueous two-phase systems, with the only known exception being the pertechnetate anion, TcO(4)(-). We have discovered a second ion, nitroprusside anion (NP), which is markedly transferred from the salt phase to the polymer phase. The partitioning behavior of [Fe(CN)(5)NO](2-) anion was investigated in ATPS formed by poly(ethylene oxide) of molar mass 3350 and 35000 g mol(-1), and different sulfate salts (Na(2)SO(4), Li(2)SO(4), and MgSO(4)). On the basis of a model, the nitroprusside high affinity for the macromolecular phase was attributed to an enthalpic specific interaction between the anion and ethylene oxide unit. Partition coefficients increased exponentially with tie-line length increase, reaching values as high as 1000 and showing a relationship very dependent on the salt nature, but independent of the polymer molar mass.
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Affiliation(s)
- Luis Henrique M da Silva
- Departamento de Química and Departamento de Tecnologia de Alimentos, Centro de Ciências Exatas e Tecnológicas, Universidade Federal de Viçosa, Av. P. H. Rolfs, Viçosa, MG 36560-000, Brazil.
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