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Yu TT, Yang FR, Su Y, Qi YH, Liu Y, Hu N. Reverse Micelles Extraction of Prolamin from Baijiu Jiuzao: Impact of Isolation Process on Protein Structure and Morphology. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2901. [PMID: 38930270 PMCID: PMC11205779 DOI: 10.3390/ma17122901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2024] [Revised: 06/03/2024] [Accepted: 06/10/2024] [Indexed: 06/28/2024]
Abstract
Prolamins, proteins derived from plants, have extensive applications in pharmaceutics and food science. Jiuzao is a byproduct of the Baijiu brewing industry, and is a great source of prolamin. Despite its importance, knowledge regarding the extraction techniques and the properties of prolamin derived from Baijiu Jiuzao (PBJ) remains limited. Reverse micelles (RMs) extraction offers an efficient and cost-effective method for purifying proteins. In the present study, prolamin was extracted from Baijiu Jiuzao using RMs extraction and subsequently characterized in terms of its secondary structure, morphology, and particle size distribution. Our findings indicate that the purified prolamin extracted using further RMs extraction possessed higher α-helix content (+13.25%), forming a large-scale protein network, and narrower particle size distributions compared to the crude prolamin obtained by NaOH-ethanol method. This research suggests that RMs extraction has potential applications in extracting prolamin from brewing industry byproducts, offering an environmentally friendly approach to Baijiu Jiuzao recycling.
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Affiliation(s)
- Ting-Ting Yu
- College of Chemical Engineering, Sichuan University of Science and Engineering, 180 Xueyuan Road, Zigong 643000, China
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Wang X, Chen Y, McClements DJ, Meng C, Zhang M, Chen H, Deng Q. Recent advances in understanding the interfacial activity of antioxidants in association colloids in bulk oil. Adv Colloid Interface Sci 2024; 325:103117. [PMID: 38394718 DOI: 10.1016/j.cis.2024.103117] [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: 09/29/2023] [Revised: 02/07/2024] [Accepted: 02/18/2024] [Indexed: 02/25/2024]
Abstract
The chemical stability of edible oils rich in polyunsaturated fatty acids (PUFAs) is a major challenge within the food and supplement industries, as lipid oxidation reduces oil quality and safety. Despite appearing homogeneous to the human eye, bulk oils are actually multiphase heterogeneous systems at the nanoscale level. Association colloids, such as reverse micelles, are spontaneously formed within bulk oils due to the self-assembly of amphiphilic molecules that are present, like phospholipids, free fatty acids, and/or surfactants. In bulk oil, lipid oxidation often occurs at the oil-water interface of these association colloids because this is where different reactants accumulate, such as PUFAs, hydroperoxides, transition metals, and antioxidants. Consequently, the efficiency of antioxidants in bulk oils is governed by their chemical reactivity, but also by their ability to be located close to the site of oxidation. This review describes the impact of minor constituents in bulk oils on the nature of the association colloids formed. And then the formation of mixed reverse micelles (LOOH, (co)surfactants, or antioxidations) during the peroxidation of bulk oils, as well as changes in their composition and structure over time are also discussed. The critical importance of selecting appropriate antioxidants and surfactants for the changes of interface and colloid, as well as the inhibition of lipid oxidation is emphasized. The knowledge presented in this review article may facilitate the design of bulk oil products with improved resistance to oxidation, thereby reducing food waste and improving food quality and safety.
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Affiliation(s)
- Xintian Wang
- Key Laboratory of Oilseeds Processing, Ministry of Agriculture, Oil Crops Research Institute, Chinese Academy of Agricultural Science, Wuhan, China
| | - Yashu Chen
- Key Laboratory of Oilseeds Processing, Ministry of Agriculture, Oil Crops Research Institute, Chinese Academy of Agricultural Science, Wuhan, China
| | | | - Chen Meng
- College of Biological Engineering and Food, Hubei University of Technology, Wuhan, China
| | - Mingkai Zhang
- College of Food and Biological Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Hongjian Chen
- College of Health Science and Engineering, Hubei University, Wuhan, China.
| | - Qianchun Deng
- Key Laboratory of Oilseeds Processing, Ministry of Agriculture, Oil Crops Research Institute, Chinese Academy of Agricultural Science, Wuhan, China.
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Pan T, Wang Y, Zhang C. A method for in situ self-assembly of the catalytic peptide in enzymatic compartments of glucan particles. Methods Enzymol 2024; 697:247-268. [PMID: 38816125 DOI: 10.1016/bs.mie.2024.01.021] [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] [Indexed: 06/01/2024]
Abstract
Drawing inspiration from cellular compartmentalization, enzymatic compartments play a pivotal role in bringing enzymes and substrates into confined environments, offering heightened catalytic efficiency and prolonged enzyme lifespan. Previously, we engineered bioinspired enzymatic compartments, denoted as TPE-Q18H@GPs, achieved through the spatiotemporally controllable self-assembly of the catalytic peptide TPE-Q18H within hollow porous glucan particles (GPs). This design strategy allows substrates and products to freely traverse, while retaining enzymatic aggregations. The confined environment led to the formation of catalytic nanofibers, resulting in enhanced substrate binding affinity and a more than two-fold increase in the second-order kinetic constant (kcat/Km) compared to TPE-Q18H nanofibers in a dispersed system. In this work, we will introduce how to synthesize the above-mentioned enzymatic compartments using salt-responsive catalytic peptides and GPs.
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Affiliation(s)
- Tiezheng Pan
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education and College of Life Sciences, Nankai University, Tianjin, P.R. China; School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan
| | - Yaling Wang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education and College of Life Sciences, Nankai University, Tianjin, P.R. China
| | - Chunqiu Zhang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education and College of Life Sciences, Nankai University, Tianjin, P.R. China.
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Intensification of endo-1,4-Xylanase Extraction by Coupling Microextractors and Aqueous Two-Phase System. Processes (Basel) 2023. [DOI: 10.3390/pr11020447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The extraction of xylanase was performed using an aqueous two-phase system (ATPS) based on polyethylene glycol (PEG1540) and various salts. Preliminary studies in a batch extractor showed that the highest extraction efficiency, E = 79.63 ± 5.21%, and purification factor, PF = 1.26 ± 0.25, were obtained with sodium citrate dihydrate-H2O-PEG1540-based ATPS for an extraction time of 10 min. The process was optimized using the experimental Box-Behnken design at three levels with three factors: extraction time (t), xylanase concentration (γ), and mass fraction of PEG in the ATPS (wPEG). Under optimal process conditions (γ = 0.3 mg/mL, wPEG = 0.21 w/w, and t = 15 min), E = 99.13 ± 1.20% and PF = 6.49 ± 0.05 were achieved. In order to intensify the process, the extraction was performed continuously in microextractors at optimal process conditions. The influence of residence time, different feeding strategies, and channel diameter on extraction efficiency and purification factor was further examined. Similar results were obtained in the microextractor for a residence time of τ = 1.03 min (E = 99.59 ± 1.22% and PF = 6.61 ± 0.07) as in the experiment carried out under optimal conditions in the batch extractor. In addition, a batch extractor and a continuous microextractor were used for the extraction of raw xylanase produced by Thermomyces lanuginosus on solid supports.
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Parodi F, Cacciari RD, Mazalu JN, Montejano HA, Reynoso E, Biasutti MA. UVB light influence on the laccase enzyme catalytic activity in reverse micelles and in homogeneous aqueous medium. Amino Acids 2023; 55:469-479. [PMID: 36695918 DOI: 10.1007/s00726-023-03237-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 01/09/2023] [Indexed: 01/26/2023]
Abstract
Laccase is a versatile enzyme widely used for the oxidation of environmental contaminants and exhibits great potential in many others applications; however, it undergoes photo-degradation when irradiated with UVB light. The photo-stability of this biomolecule can be improved by immobilization in different encapsulation media and reverse micelles have been employed with this purpose. The laccase activity using syringaldazine as substrate has been studied in the absence and in the presence of reverse micelles of 0.15 M of sodium 1,4-bis (2-ethylhexyl) sulfosuccinate (AOT) in isooctane at W0 ([H2O]/[AOT]) = 30, before and after irradiation of the enzyme with UVB light. The kinetic parameters, i.e., Michaelis-Menten constant (KM), catalytic constant (kCAT), and catalytic efficiency (kCAT/KM), were determined by spectroscopic measurements in the micellar system and in homogeneous aqueous medium. The distribution of the substrate in two pseudo-phases (micelle and organic solvent) was taking into account in the kinetic parameters' determinations. The results obtained indicate that the nano-aggregate system confers a solubilization media in the water core of the micelle, both for the enzyme and the substrate, in which the catalytic function of the enzyme is preserved. On the other hand, in homogeneous aqueous medium kCAT/KM value, it is reduced by ~50% after UVB irradiation of the enzyme, while in micellar medium, less than 10% of the activity was affected. This mean that the enzyme achieves a considerably photo-protection when it is irradiated with UVB light in reverse micelles as compared with the homogeneous aqueous medium. This phenomenon can be mainly due to the confinement of the biomolecule inside the micelle. Physical properties of the nano-environment could affect photochemical reactions.
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Affiliation(s)
- Facundo Parodi
- Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto (UNRC), Ruta Nacional 36 Km 601, X5804BYA, Río Cuarto, Córdoba, Argentina
- Instituto Para El Desarrollo Agroindustrial y de la Salud (IDAS), CONICET-UNRC, Ruta Nacional 36 Km 601, X5804BYA, Río Cuarto, Córdoba, Argentina
| | - R Daniel Cacciari
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), CONICET-UNLP, Diagonal 113 y 64, Casco Urbano, B1900, La Plata, Buenos Aires, Argentina
| | - Jeremías N Mazalu
- Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto (UNRC), Ruta Nacional 36 Km 601, X5804BYA, Río Cuarto, Córdoba, Argentina
| | - Hernán A Montejano
- Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto (UNRC), Ruta Nacional 36 Km 601, X5804BYA, Río Cuarto, Córdoba, Argentina
- Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados (IITEMA), CONICET-UNRC, Ruta Nacional 36 Km 601, X5804BYA, Río Cuarto, Córdoba, Argentina
| | - Eugenia Reynoso
- Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto (UNRC), Ruta Nacional 36 Km 601, X5804BYA, Río Cuarto, Córdoba, Argentina.
- Instituto Para El Desarrollo Agroindustrial y de la Salud (IDAS), CONICET-UNRC, Ruta Nacional 36 Km 601, X5804BYA, Río Cuarto, Córdoba, Argentina.
| | - M Alicia Biasutti
- Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto (UNRC), Ruta Nacional 36 Km 601, X5804BYA, Río Cuarto, Córdoba, Argentina.
- Instituto Para El Desarrollo Agroindustrial y de la Salud (IDAS), CONICET-UNRC, Ruta Nacional 36 Km 601, X5804BYA, Río Cuarto, Córdoba, Argentina.
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6
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Bioinspired enzymatic compartments constructed by spatiotemporally confined in situ self-assembly of catalytic peptide. Commun Chem 2022; 5:81. [PMID: 36697908 PMCID: PMC9814850 DOI: 10.1038/s42004-022-00700-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 06/29/2022] [Indexed: 01/28/2023] Open
Abstract
Enzymatic compartments, inspired by cell compartmentalization, which bring enzymes and substrates together in confined environments, are of particular interest in ensuring the enhanced catalytic efficiency and increased lifetime of encapsulated enzymes. Herein, we constructed bioinspired enzymatic compartments (TPE-Q18H@GPs) with semi-permeability by spatiotemporally controllable self-assembly of catalytic peptide TPE-Q18H in hollow porous glucan particles (GPs), allowing substrates and products to pass in/out freely, while enzymatic aggregations were retained. Due to the enrichment of substrates and synergistic effect of catalytic nanofibers formed in the confined environment, the enzymatic compartments exhibited stronger substrate binding affinity and over two-fold enhancement of second-order kinetic constant (kcat/Km) compared to TPE-Q18H nanofibers in disperse system. Moreover, GPs enabled the compartments sufficient stability against perturbation conditions, such as high temperature and degradation. This work opens an intriguing avenue to construct enzymatic compartments using porous biomass materials and has fundamental implications for constructing artificial organelles and even artificial cells.
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Qin Z, Wang D, Li T, Luo R, Zhou D, Xiong X. Construction of an enzymatic shuttling compartment based on reverse micellar for bamboo biomass hydrolysis in ionic liquids. BIORESOURCE TECHNOLOGY 2022; 355:127257. [PMID: 35533890 DOI: 10.1016/j.biortech.2022.127257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 04/29/2022] [Accepted: 04/30/2022] [Indexed: 06/14/2023]
Abstract
The enzymatic saccharification of regenerated lignocellulose must occur separately due to the toxicity of ionic liquids to cellulase. Therefore, it is important to develop a biocompatible IL-cellulase system which effectively achieves activation and saccharification of lignocellulose. For this purpose, a dual-phase "enzyme-shuttling compartment" was constructed in this study. Tween 80 was found to form reverse micelles in the isooctane-IL two-liquid phase, acting as a microenvironment that maintains the energetic conformation of the reactive cellulase. The activated bamboo biomass was enzymatically hydrolyzed in 20% (w/v) 1-ethyl-3-methylimidazolium dimethyl phosphate and 50 mM citrate buffer at 50 °C, achieving a high total reducing sugar yield of 71.2% and maintaining an enzymatic activity of 91.2% after 24 h. Thus, an efficient system with the simultaneous activation and saccharification of natural biomass was successfully developed in a one-pot procedure at low temperatures, ensuring large-scale biomass conversion into biofuels and biological products.
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Affiliation(s)
- Zhao Qin
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China
| | - Dan Wang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China.
| | - Tinglan Li
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China
| | - Ruoshi Luo
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China
| | - Dan Zhou
- College of Bioengineering, Chongqing University, Chongqing 400044, PR China
| | - Xiaochao Xiong
- Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164-6120, USA
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8
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Effect of Reverse Micelles Size on the Electron Transfer Reaction within the Ion Pair of Co (III)/Fe (II) Complexes. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12094552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The electron transfer process between pentammineaquacobalt (III) and hexacyanoferrate (II), [Co(NH3)5H2O]3+/Fe(CN)6]4− ion pair was investigated in water/dioctyl sodium sulfosuccinate (AOT)/Isooctane reverse micelles. The study observed that the electron transfer rate depends on the size of the reverse micelles. The concentrations of Fe (II) ions were varied in different-sized (Wo) reverse micelles of Wo = [H2O]/[AOT] = 10 to 30, but the concentration of Co (III) ions was kept constant. The rate of electron transfer in the ion pair [Co(NH3)5H2O]3+/[Fe(CN)6]4− increased with decreasing size (Wo) of reverse micelles. The smallest reverse micelles Wo = 10 demonstrated the fastest electron transfer rate, and the biggest Wo = 30 reverse micelles showed the slowest electron transfer rate. The change of reaction environment and the location of the reactants in the reverse micelles due to confinement are considered the factors responsible for the results.
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9
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Murashova NM, Yurtov EV. State of the Art and Prospects for Studies of Structure Formation in Extraction Systems with Metal Compounds. THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING 2022. [DOI: 10.1134/s0040579521060075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Zhang P, Gong JS, Qin J, Li H, Hou HJ, Zhang XM, Xu ZH, Shi JS. Phospholipids (PLs) know-how: exploring and exploiting phospholipase D for its industrial dissemination. Crit Rev Biotechnol 2021; 41:1257-1278. [PMID: 33985392 DOI: 10.1080/07388551.2021.1921690] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 12/26/2020] [Accepted: 02/24/2021] [Indexed: 10/21/2022]
Abstract
Owing to their numerous nutritional and bioactive functions, phospholipids (PLs), which are major components of biological membranes in all living organisms, have been widely applied as nutraceuticals, food supplements, and cosmetic ingredients. To date, PLs are extracted solely from soybean or egg yolk, despite the diverse market demands and high cost, owing to a tedious and inefficient manufacturing process. A microbial-based manufacturing process, specifically phospholipase D (PLD)-based biocatalysis and biotransformation process for PLs, has the potential to address several challenges associated with the soybean- or egg yolk-based supply chain. However, poor enzyme properties and inefficient microbial expression systems for PLD limit their wide industrial dissemination. Therefore, sourcing new enzyme variants with improved properties and developing advanced PLD expression systems are important. In the present review, we systematically summarize recent achievements and trends in the discovery, their structural properties, catalytic mechanisms, expression strategies for enhancing PLD production, and its multiple applications in the context of PLs. This review is expected to assist researchers to understand current advances in this field and provide insights for further molecular engineering efforts toward PLD-mediated bioprocessing.
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Affiliation(s)
- Peng Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, P. R. China
| | - Jin-Song Gong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, P. R. China
| | - Jiufu Qin
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Hui Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, P. R. China
| | - Hai-Juan Hou
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, P. R. China
| | - Xiao-Mei Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, P. R. China
| | - Zheng-Hong Xu
- National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi, P. R. China
- Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, P. R. China
| | - Jin-Song Shi
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, P. R. China
- Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, P. R. China
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Villeneuve P, Bourlieu-Lacanal C, Durand E, Lecomte J, McClements DJ, Decker EA. Lipid oxidation in emulsions and bulk oils: a review of the importance of micelles. Crit Rev Food Sci Nutr 2021:1-41. [PMID: 34839769 DOI: 10.1080/10408398.2021.2006138] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Lipid oxidation is a major cause of quality deterioration in food products. In these foods, lipids are often present in a bulk or in emulsified forms. In both systems, the rate, extent and pathway of oxidation are highly dependent on the presence of colloidal structures and interfaces because these are the locations where oxidation normally occurs. In bulk oils, reverse micelles (association colloids) are present and are believed to play a crucial role on lipid oxidation. Conversely, in emulsions, surfactant micelles are present that also play a major role in lipid oxidation pathways. After a brief description of lipid oxidation and antioxidants mechanisms, this review discusses the current understanding of the influence of micellar structures on lipid oxidation. In particular, is discussed the major impact of the presence of micelles in emulsions, or reverse micelles (association colloids) in bulk oil on the oxidative stability of both systems. Indeed, both micelles in emulsions and associate colloids in bulk oils are discussed in this review as nanoscale structures that can serve as reservoirs of antioxidants and pro-oxidants and are involved in their transport within the concerned system. Their role as nanoreactors where lipid oxidation reactions occur is also commented.
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Affiliation(s)
- Pierre Villeneuve
- CIRAD, UMR QualiSud, Montpellier, France.,QualiSud, Univ Montpellier, CIRAD, Montpellier SupAgro, Université d'Avignon, Université de La Réunion, Montpellier, France
| | - Claire Bourlieu-Lacanal
- QualiSud, Univ Montpellier, CIRAD, Montpellier SupAgro, Université d'Avignon, Université de La Réunion, Montpellier, France.,UMR IATE, Univ Montpellier, INRAE, Institut Agro, Montpellier, France
| | - Erwann Durand
- CIRAD, UMR QualiSud, Montpellier, France.,QualiSud, Univ Montpellier, CIRAD, Montpellier SupAgro, Université d'Avignon, Université de La Réunion, Montpellier, France
| | - Jérôme Lecomte
- CIRAD, UMR QualiSud, Montpellier, France.,QualiSud, Univ Montpellier, CIRAD, Montpellier SupAgro, Université d'Avignon, Université de La Réunion, Montpellier, France
| | | | - Eric A Decker
- Department of Food Science, University of Massachusetts, Amherst, Massachusetts, USA
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Kinetics of Non-Enzymatic Synthesis of Dipeptide Cbz-Phe-Leu with AOT Reversed Micelles. Processes (Basel) 2021. [DOI: 10.3390/pr9061003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The non-enzymatic synthesis of N-benzyloxycarbonyl-L-phenylalanyl-L-leucine (Cbz-Phe-Leu) from lipophilic N-benzyloxycarbonyl-L-phenylalanine (Cbz-Phe) and hydrophilic L-leucine (Leu), by N, N’-dicyclohexylcarbodiimide (DCC) as a condensing agent, was carried out using a reversed micellar system composed of bis(2-ethylhexyl) sodium sulfosuccinate (AOT) as a surfactant and isooctane. We successfully synthesized Cbz-Phe-Leu in a short time and investigated the effects of its operational conditions, the DCC concentration, w0, and the pH on the kinetic parameters and the maximum yields. For dipeptide synthesis, we had to add an excess of DCC with the substrates because of the side reactions of Cbz-Phe. From the pH dependency of the reactivity, a partially cationic form of Leu was better for a synthesis reaction because of the enrichment of Leu at the interface by anionic AOT. The optimum water content on the dipeptide synthesis was w0 = 28 due to the competition of the peptide synthesis and the side reactions. The maximum yield of Cbz-Phe-Leu was 0.565 at 80 h under optimum experimental conditions.
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13
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Tonova K. Ionic liquid-assisted biphasic systems for downstream processing of fermentative enzymes and organic acids. PHYSICAL SCIENCES REVIEWS 2021. [DOI: 10.1515/psr-2018-0068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Room-temperature ionic liquids (ILs) represent molten salts entirely consisting of ions, usually a charge-stabilized organic cation and an inorganic or organic anion. ILs are liquids at ambient temperature but possess characteristics unusual for the common liquid solvents, such as negligible vapor pressure, high thermal stability and most over the ability to mix and match libraries of cations and anions in order to acquire desirable physical and chemical properties [1]. The opportunity to obtain tunable density, viscosity, polarity and miscibility with common molecular liquids gave rise to a variety of applications of the ILs [2] as environmentally benign solvents, extractants or auxiliaries. In particular, numbers of innovations in the methods for recovery and purification of biologically derived compounds involve ILs used solo or partnered with other liquids in biphasic systems [3,4,5]. It should be noted that the ILs are not intrinsically greener than the traditional solvents, given that their production is usually more resource-demanding, but the inherent potential for recycling and reuse, and for prevention of chemical accidents gives the ILs advantages ahead.
The present chapter provides a state-of-the-art overview on the basic applications of the ILs in biphasic systems aimed at downstream processing of valuable fermentative products, enzymes and organic acids. Main industrially important enzymes, lipases and carbohydrases, are considered and a description of the IL-assisted aqueous biphasic systems (ABS) and the results obtained in view of enzyme yield and purity is made. ILs serve different functions in the ABS, main phase-segregating constituents (mostly in the IL/salt ABS) or adjuvants to the polymer/salt ABS. Enzyme isolation from the contaminant proteins present in the feedstock can be carried out either in the IL-rich or in the salt-rich phase of the ABS and for the reader’s convenience the two options are described separately. Discussion on the factors and parameters affecting the enzyme partitioning in the ABS with ILs guides the reader through the ways by which the interactions between the IL and the enzyme can be manipulated in favor of the enzyme purification through the choice of the ABS composition (IL, salt, pH) and the role of the water content and the IL-rich phase structure.
The second part of the chapter is dedicated to the recovery of fermentative organic acids. Mostly hydrophobic ILs have been engaged in the studies and the biphasic systems thereof are summarized. The systems are evaluated by the extraction efficiency and partition coefficient obtained. Factors and parameters affecting the extraction of organic acids by ILs are highlighted in a way to unravel the extraction mechanism. The choice of IL and pH determines the reactive mechanism and the ion exchange, while the water content and the IL phase structure play roles in physical extraction. Procedures undertaken to enhance the efficiency and to intensify the process of extraction are also looked over.
Finally, the experimental holes that need fill up in the future studies are marked. According to the author’s opinion an intense research with hydrophobic ILs is suggested as these ILs have been proved milder to the biological structures (both the microbial producer and the enzyme product), more effective in the organic acid recovery and suitable to perform “in situ” extraction. Extractive fermentation entails validation of ecological and toxicological characteristics of the ILs. The protocols for re-extraction of fermentative products separated by IL-assisted biphasic systems should be clearly settled along with the methods for ILs recycling and reuse. Novel more flexible approaches to process intensification can be implemented in order to adopt the separation by biphasic systems for use in industry.
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Affiliation(s)
- Konstantza Tonova
- Institute of Chemical Engineering , Bulgarian Academy of Sciences , Acad. G. Bonchev Str., Bldg. 103, 1113 , Sofia , Bulgaria
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14
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Versatility of Reverse Micelles: From Biomimetic Models to Nano (Bio)Sensor Design. Processes (Basel) 2021. [DOI: 10.3390/pr9020345] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
This paper presents an overview of the principal structural and dynamics characteristics of reverse micelles (RMs) in order to highlight their structural flexibility and versatility, along with the possibility to modulate their parameters in a controlled manner. The multifunctionality in a large range of different scientific fields is exemplified in two distinct directions: a theoretical model for mimicry of the biological microenvironment and practical application in the field of nanotechnology and nano-based sensors. RMs represent a convenient experimental approach that limits the drawbacks of the conventionally biological studies in vitro, while the particular structure confers them the status of simplified mimics of cells by reproducing a complex supramolecular organization in an artificial system. The biological relevance of RMs is discussed in some particular cases referring to confinement and a crowded environment, as well as the molecular dynamics of water and a cell membrane structure. The use of RMs in a range of applications seems to be more promising due to their structural and compositional flexibility, high efficiency, and selectivity. Advances in nanotechnology are based on developing new methods of nanomaterial synthesis and deposition. This review highlights the advantages of using RMs in the synthesis of nanoparticles with specific properties and in nano (bio)sensor design.
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Xu P, Du H, Peng X, Tang Y, Zhou Y, Chen X, Fei J, Meng Y, Yuan L. Degradation of several polycyclic aromatic hydrocarbons by laccase in reverse micelle system. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 708:134970. [PMID: 31740057 DOI: 10.1016/j.scitotenv.2019.134970] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 10/12/2019] [Accepted: 10/12/2019] [Indexed: 05/22/2023]
Abstract
Remediation of polycyclic aromatic hydrocarbons (PAHs) in oily sludge has become the focus of attention. UV spectrophotometer analysis showed that four types of PAHs were found in sample, which including phenanthrene, anthracene, benzo(a)anthracene and benzo(b)fluoranthene. In order to degrade PAH effectively, the laccase reverse micelles system was proposed. The system protects laccase from being affected by organic phase. Reverse micelles were prepared by using isooctane to simulate oil. The optimum water content W0 was 10 by measuring the electrical conductivity of the system. Under this condition, the effects of pH, temperature and ionic strength on the degradation rate of PAHs were investigated. Also, compared with that of non-immobilized laccase, the ratio between the secondary structures of laccase under different conditions was studied. The results showed that the highest laccase activity was obtained at pH 4.2 and 30 °C with 60 mmol/L KCl. Meanwhile, the structure of α-helix accounts for the largest proportion, and the ratio of α-helix in the laccase secondary structure in the laccase-reverse micelle system was higher than that of the non-immobilized one under this condition. Finally, predicting the reactive site of the degradation of polycyclic aromatic hydrocarbons was simulated by ORCA (Version 4.2.0). The application in oily sludge was further conducted. This study provides an effective method and basis for the degradation of PAHs in oily sludge.
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Affiliation(s)
- Pengfei Xu
- National & Local United Engineering Laboratory for New Petrochemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Hao Du
- National & Local United Engineering Laboratory for New Petrochemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Xin Peng
- National & Local United Engineering Laboratory for New Petrochemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China.
| | - Yu Tang
- National & Local United Engineering Laboratory for New Petrochemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Yaoyu Zhou
- College of Resources and Environment, Hunan Agricultural University, Changsha 410028, China
| | - Xiangyan Chen
- National & Local United Engineering Laboratory for New Petrochemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Jia Fei
- National & Local United Engineering Laboratory for New Petrochemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Yong Meng
- National & Local United Engineering Laboratory for New Petrochemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Lu Yuan
- National & Local United Engineering Laboratory for New Petrochemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
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Sy Mohamad SF, Mohd Said F, Abdul Munaim MS, Mohamad S, Azizi Wan Sulaiman WM. Application of experimental designs and response surface methods in screening and optimization of reverse micellar extraction. Crit Rev Biotechnol 2020; 40:341-356. [PMID: 31931631 DOI: 10.1080/07388551.2020.1712321] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Reverse micellar extraction (RME) has emerged as a versatile and efficient tool for downstream processing (DSP) of various biomolecules, including structural proteins and enzymes, due to the substantial advantages over conventional DSP methods. However, the RME system is a complex dependency of several parameters that influences the overall selectivity and performance of the RME system, hence this justifies the need for optimization to obtain higher possible extraction results. For the last two decades, many experimental design strategies for screening and optimization of RME have been described in literature. The objective of this article is to review the use of different experimental designs and response surface methodologies that are currently used to screen and optimize the RME system for various types of biomolecules. Overall, this review provides the rationale for the selection of appropriate screening or optimization techniques for the parameters associated with both forward and backward extraction during the RME of biomolecules.
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Affiliation(s)
- Sharifah Fathiyah Sy Mohamad
- Faculty of Chemical and Process Engineering Technology, College of Engineering Technology, Universiti Malaysia Pahang, Kuantan, Pahang, Malaysia
| | - Farhan Mohd Said
- Faculty of Chemical and Process Engineering Technology, College of Engineering Technology, Universiti Malaysia Pahang, Kuantan, Pahang, Malaysia
| | - Mimi Sakinah Abdul Munaim
- Faculty of Chemical and Process Engineering Technology, College of Engineering Technology, Universiti Malaysia Pahang, Kuantan, Pahang, Malaysia
| | - Shahril Mohamad
- Faculty of Chemical and Process Engineering Technology, College of Engineering Technology, Universiti Malaysia Pahang, Kuantan, Pahang, Malaysia
| | - Wan Mohd Azizi Wan Sulaiman
- Department of Basic Medical Sciences, Kulliyyah of Pharmacy, International Islamic University Malaysia, Kuantan, Pahang, Malaysia
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17
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Wang R, Huang X. Anionic surfactant-stabilized hydrophobic ionic liquid-based bicontinuous microemulsion: Formulation, microstructure and laccase kinetics. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111404] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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18
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Sun X, Bandara N. Applications of reverse micelles technique in food science: A comprehensive review. Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2019.07.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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19
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Chen C, Tian H, Xing S, Li C, Zeng X, He L. Influence of different parameters on reverse micelle extraction combined with acetone precipitation to purify sn-1,3 extracellular lipase from Aspergillus niger GZUF36. Journal of Food Science and Technology 2019; 56:2899-2908. [PMID: 31205345 DOI: 10.1007/s13197-019-03743-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 02/15/2019] [Accepted: 03/20/2019] [Indexed: 11/26/2022]
Abstract
There are few reports on the feasibility of combined reverse micelle extraction and acetone precipitation to obtain electrophoretic pure enzymes. We aimed to purify a sn-1,3 extracellular lipase from a novel Aspergillus niger GZUF36 through this combination in this work. This lipase preliminarily purified by controlling the volume ratio (1:2.5) of crude enzyme solution and acetone. Then, we studied effects of different parameters on reverse micelle extraction. The suitable surfactant, pH, salt and cosolvent and extraction time for forward extraction were 125 mM cetyl trimethylammonium bromide (CTAB), 9.0, 0.075 M NaCl, 10% n-hexanol and 30 min, respectively. Under these conditions, the forward extraction rate reached 90.3% ± 3.2%. The suitable salt, pH, extraction time and short chain alcohol for backward extraction were consecutively 1.5 M KCl, 6.5, 60 min and 10% ethanol. Adding 10% ethanol shows a significant advantage of improvement the extraction rate. Under these optimal conditions, the total extraction rate and purification factor of lipase reached 76.8% and 10.14, respectively. SDS-PAGE showed that molecular weight of the pure protein was 42.7 kDa and TLC exhibited sn-1,3 selectivity of this lipase. LC-MS/MS analysis revealed that the lipase had 297 amino acid residues and was likely to glycosylate. Through the study of different parameters, it demonstrated that the new and simple combination of reverse micelle extraction using CTAB as surfactant and n-hexanol as cosolvent for forward extraction and adding ethanol for backward extraction and acetone precipitation is a promising method to get almost an electrophoretically pure sn-1,3 lipase.
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Affiliation(s)
- Cuicui Chen
- Key Laboratory of Agricultural and Animal Products Store & Processing of Guizhou Province, Guiyang, 550025 China
- 2College of Liquor and Food Engneering, Guizhou University, Guiyang, 550025 China
| | - Hua Tian
- 3College of Life Science, Xinyang Normal University, Xinyang, 464000 Henan China
| | - Shuqi Xing
- Key Laboratory of Agricultural and Animal Products Store & Processing of Guizhou Province, Guiyang, 550025 China
- 2College of Liquor and Food Engneering, Guizhou University, Guiyang, 550025 China
| | - Cuiqin Li
- 4School of Chemistry and Chemical Engineering, Guizhou University, Guiyang, 550025 China
| | - Xuefeng Zeng
- Key Laboratory of Agricultural and Animal Products Store & Processing of Guizhou Province, Guiyang, 550025 China
- 2College of Liquor and Food Engneering, Guizhou University, Guiyang, 550025 China
| | - Laping He
- Key Laboratory of Agricultural and Animal Products Store & Processing of Guizhou Province, Guiyang, 550025 China
- 2College of Liquor and Food Engneering, Guizhou University, Guiyang, 550025 China
- Guizhou Pork Products Research Center of Engineering Technology, Guiyang, 550018 China
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20
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Pawar SS, Iyyaswami R, Belur PD. Selective extraction of lactoferrin from acidic whey using CTAB/n-heptanol reverse micellar system. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2019; 56:2553-2562. [PMID: 31168137 PMCID: PMC6525681 DOI: 10.1007/s13197-019-03738-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 03/14/2019] [Accepted: 03/19/2019] [Indexed: 06/09/2023]
Abstract
A reverse micellar system comprising CTAB/n-heptanol, developed for extracting lactoferrin (LF) from a synthetic solution of LF, was investigated for the selective extraction of LF from synthetic whey protein solution, which was prepared by mixing the pure whey proteins. The process conditions obtained during the process was further extended to extract the LF from real acidic whey. The selective extraction of LF was improved by studying the effect of NaCl concentration (additive) and aqueous phase pH on the partitioning of LF into the micellar phase. The highest extraction of LF (98.7%) from acidic whey to micellar phase was achieved at the aqueous phase pH of 10.3 and NaCl concentration of 1.1 M. The LF was back extracted to the aqueous stripping phase with 94% extraction efficiency and 100% purity. The recycling capacity of the organic phase after the back extraction of LF was analyzed to make the process more economical.
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Affiliation(s)
- Swapnali S. Pawar
- Department of Chemical Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, 575025 India
| | - Regupathi Iyyaswami
- Department of Chemical Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, 575025 India
| | - Prasanna D. Belur
- Department of Chemical Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, 575025 India
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21
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Motokawa R, Kobayashi T, Endo H, Mu J, Williams CD, Masters AJ, Antonio MR, Heller WT, Nagao M. A Telescoping View of Solute Architectures in a Complex Fluid System. ACS CENTRAL SCIENCE 2019; 5:85-96. [PMID: 30693328 PMCID: PMC6346384 DOI: 10.1021/acscentsci.8b00669] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Indexed: 05/28/2023]
Abstract
Short- and long-range correlations between solutes in solvents can influence the macroscopic chemistry and physical properties of solutions in ways that are not fully understood. The class of liquids known as complex (structured) fluids-containing multiscale aggregates resulting from weak self-assembly-are especially important in energy-relevant systems employed for a variety of chemical- and biological-based purification, separation, and catalytic processes. In these, solute (mass) transfer across liquid-liquid (water, oil) phase boundaries is the core function. Oftentimes the operational success of phase transfer chemistry is dependent upon the bulk fluid structures for which a common functional motif and an archetype aggregate is the micelle. In particular, there is an emerging consensus that mass transfer and bulk organic phase behaviors-notably the critical phenomenon of phase splitting-are impacted by the effects of micellar-like aggregates in water-in-oil microemulsions. In this study, we elucidate the microscopic structures and mesoscopic architectures of metal-, water-, and acid-loaded organic phases using a combination of X-ray and neutron experimentation as well as density functional theory and molecular dynamics simulations. The key conclusion is that the transfer of metal ions between an aqueous phase and an organic one involves the formation of small mononuclear clusters typical of metal-ligand coordination chemistry, at one extreme, in the organic phase, and their aggregation to multinuclear primary clusters that self-assemble to form even larger superclusters typical of supramolecular chemistry, at the other. Our metrical results add an orthogonal perspective to the energetics-based view of phase splitting in chemical separations known as the micellar model-founded upon the interpretation of small-angle neutron scattering data-with respect to a more general phase-space (gas-liquid) model of soft matter self-assembly and particle growth. The structure hierarchy observed in the aggregation of our quinary (zirconium nitrate-nitric acid-water-tri-n-butyl phosphate-n-octane) system is relevant to understanding solution phase transitions, in general, and the function of engineered fluids with metalloamphiphiles, in particular, for mass transfer applications, such as demixing in separation and synthesis in catalysis science.
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Affiliation(s)
- Ryuhei Motokawa
- Materials
Sciences Research Center, Japan Atomic Energy
Agency, Tokai, Ibaraki 319-1195, Japan
| | - Tohru Kobayashi
- Materials
Sciences Research Center, Japan Atomic Energy
Agency, Tokai, Ibaraki 319-1195, Japan
| | - Hitoshi Endo
- Materials
Sciences Research Center, Japan Atomic Energy
Agency, Tokai, Ibaraki 319-1195, Japan
- Neutron
Science Division, Institute of Materials Structure Science, and Materials
and Life Science Division, J-PARC Center, High Energy Accelerator Research Organization, 203-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
- Department
of Materials Structure Science, The Graduate
University for Advanced Studies (SOKENDAI), 203-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
| | - Junju Mu
- School
of Chemical Engineering and Analytical Science, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Christopher D. Williams
- School
of Chemical Engineering and Analytical Science, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Andrew J. Masters
- School
of Chemical Engineering and Analytical Science, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Mark R. Antonio
- Chemical
Sciences & Engineering Division, Argonne
National Laboratory, Lemont, Illinois 60439, United States
| | - William T. Heller
- Neutron Scattering
Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Michihiro Nagao
- NIST
Center for Neutron Research, National Institute
of Standards and Technology, Gaithersburg, Maryland 20899-6102, United States
- Center
for Exploration of Energy and Matter, Department of Physics, Indiana University, Bloomington, Indiana 47408, United States
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22
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Yu D, Zhang R, Wang Y, Zou D, Li T, Tang H, Jiang L, Wang L. Purification of β-carotene 15,15′-monooxygenase from pig intestine and its enzymatic hydrolysis of pigment in soybean oil. Int J Food Sci Technol 2018. [DOI: 10.1111/ijfs.13960] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dianyu Yu
- College of Food Science and Technology; Northeast Agricultural University; Harbin 150030 China
| | - Ruchun Zhang
- College of Food Science and Technology; Northeast Agricultural University; Harbin 150030 China
| | - Yuqi Wang
- College of Food Science and Technology; Northeast Agricultural University; Harbin 150030 China
| | - Dezhi Zou
- College of Food Science and Technology; Northeast Agricultural University; Harbin 150030 China
| | - Tingting Li
- College of Food Science and Technology; Northeast Agricultural University; Harbin 150030 China
| | - Honglin Tang
- College of Food Science and Technology; Northeast Agricultural University; Harbin 150030 China
| | - Lianzhou Jiang
- College of Food Science and Technology; Northeast Agricultural University; Harbin 150030 China
| | - Liqi Wang
- School of Computer and Information Engineering; Harbin University of Commerce; Harbin 150028 China
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23
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Ng HS, Tan GYT, Lee KH, Zimmermann W, Yim HS, Lan JCW. Direct recovery of mangostins from Garcinia mangostana pericarps using cellulase-assisted aqueous micellar biphasic system with recyclable surfactant. J Biosci Bioeng 2018; 126:507-513. [DOI: 10.1016/j.jbiosc.2018.04.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Revised: 03/27/2018] [Accepted: 04/14/2018] [Indexed: 11/26/2022]
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24
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Serrano MAC, Zhao B, He H, Thayumanavan S, Vachet RW. Molecular Features Influencing the Release of Peptides from Amphiphilic Polymeric Reverse Micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:4595-4602. [PMID: 29561150 PMCID: PMC6173316 DOI: 10.1021/acs.langmuir.7b04065] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Efficient and controlled release of peptides bound to polymeric reverse micelle assemblies can be achieved through the cooperative effects of disassembly and disruption of charge-charge interactions. Through the examination of various peptides and polymer architectures, we have identified the factors that affect the release efficiency of the electrostatically bound peptides. Peptide guests and polymers with a greater number of complementary charges result in less efficient release than peptides and polymers with lower numbers of charges. Interestingly, we find that the presence of adjacent charged groups on the monomeric unit of the polymer exhibits exceptionally low release efficiency, perhaps because of a chelate-like effect, even when the total polymer charge is lower. Overall, our findings inform the design principles for catch-and-release systems based on polymeric reverse micelles, which offer great versatility and tunability.
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Affiliation(s)
- Mahalia A C Serrano
- Department of Chemistry , University of Massachusetts , Amherst , Massachusetts 01003 , United States
| | - Bo Zhao
- Department of Chemistry , University of Massachusetts , Amherst , Massachusetts 01003 , United States
| | - Huan He
- Department of Chemistry , University of Massachusetts , Amherst , Massachusetts 01003 , United States
| | - S Thayumanavan
- Department of Chemistry , University of Massachusetts , Amherst , Massachusetts 01003 , United States
| | - Richard W Vachet
- Department of Chemistry , University of Massachusetts , Amherst , Massachusetts 01003 , United States
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Priyanka BS, Rastogi NK. Downstream processing of lactoperoxidase from milk whey by involving liquid emulsion membrane. Prep Biochem Biotechnol 2018; 48:270-278. [PMID: 29355443 DOI: 10.1080/10826068.2018.1425713] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The current work deals with downstream processing of lactoperoxidase using liquid emulsion membrane from the bovine milk whey, which is a by-product from dairy industry. It is an alternate separation technique that can be used for the selective extraction of lactoperoxidase. The extraction of lactoperoxidase in liquid emulsion membrane takes place due to the electrostatic interaction between the enzyme and polar head group of reverse micellar surfactant. The optimum conditions resulted in 2.86 factor purity and activity recovery of 75.21%. Downstream processing involving liquid emulsion membrane is a potential technique for the extraction of lactoperoxidase from bovine whey.
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Affiliation(s)
- B S Priyanka
- a Department of Food Engineering, Academy of Scientific and Innovative Research , CSIR-Central Food Technological Research Institute , Mysore , India
| | - Navin K Rastogi
- a Department of Food Engineering, Academy of Scientific and Innovative Research , CSIR-Central Food Technological Research Institute , Mysore , India
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26
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Priyanka BS, Rastogi NK. Selective extraction of lipase and amylase from enzyme mixture by employing liquid emulsion membrane. Biotechnol Prog 2018; 34:721-729. [PMID: 29464895 DOI: 10.1002/btpr.2624] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 02/08/2018] [Indexed: 11/11/2022]
Abstract
This work deals with the extraction of lipase and amylase from enzyme mixture by employing liquid emulsion membranes (LEM). The electrostatic interaction between enzymes and reverse micellar surfactant polar head group plays an important role for selective extraction of two different enzymes having different isoelectric points. The optimized conditions for lipase extraction (pH 7.0) resulted in the purification fold and activity recovery of 5.43 fold and 89.53%, respectively, whereas, in case of amylase (pH 9.0) the purification fold and activity recovery were 6.58 and 94.32%, respectively. The results were compared with the control sample (containing individual enzymes) and mixture of enzymes lipase and amylase and it was shown that for optimum conditions the activity recovery and purification fold was higher for the individual enzymes as compared to their mixture. Downstream processing involving LEM was shown to be a feasible method for selective extraction of enzymes. © 2018 American Institute of Chemical Engineers Biotechnol. Prog., 34:721-729, 2018.
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Affiliation(s)
- B S Priyanka
- Dept. of Food Engineering, Academy of Scientific and Innovative Research, CSIR-Central Food Technological Research Institute, Mysore, Karnataka, 570020, India
| | - Navin K Rastogi
- Dept. of Food Engineering, Academy of Scientific and Innovative Research, CSIR-Central Food Technological Research Institute, Mysore, Karnataka, 570020, India
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27
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Mortensen HG, Madsen JK, Andersen KK, Vosegaard T, Deen GR, Otzen DE, Pedersen JS. Myoglobin and α-Lactalbumin Form Smaller Complexes with the Biosurfactant Rhamnolipid Than with SDS. Biophys J 2018; 113:2621-2633. [PMID: 29262357 DOI: 10.1016/j.bpj.2017.10.024] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 09/18/2017] [Accepted: 10/10/2017] [Indexed: 11/16/2022] Open
Abstract
Biosurfactants (BSs) attract increasing attention as sustainable alternatives to petroleum-derived surfactants. This necessitates structural insight into how BSs interact with proteins encountered by current chemical surfactants. Thus, small-angle x-ray scattering (SAXS) has been used for studying the structures of complexes made of the proteins α-Lactalbumin (αLA) and myoglobin (Mb) with the biosurfactant rhamnolipid (RL). For comparison, complexes between αLA and the chemical surfactant sodium dodecyl sulfate (SDS) were also investigated. The SAXS data for pure RL micelles can be described by prolate core-shell structures with a core radius of 7.7 Å and a shell thickness of 12 Å, giving an aggregation number of 11. The small core radius is attributed to RL's complex hydrophobic tail. Data for the αLA-RL complex agree with a 12-molecule micelle with a single protein molecule in the shell. For Mb-RL, the analysis gives complexes of two connected micelles, each containing 10 RL and one protein in the shells. αLA-RL and Mb-RL form surfactant-saturated complexes above 5.6 and 4.7 mM RL, respectively, leaving the remaining RL in free micelles. The SAXS data for SDS agree with oblate-shaped micelles with a core of 20 Å, core eccentricity 0.7, and shell thickness of 5.45 Å, with an aggregation number of 74. The αLA-SDS complexes contain a prolate micelle with a core radius of 11-14 Å and a shell of 8-12 Å with up to 3 αLA per particle and up to 43 SDS per αLA, both considerably larger than for RL. Unlike the RL-protein complexes, the number of surfactant molecules in αLA-SDS complexes increases with surfactant concentration, and saturate at higher surfactant concentrations than αLA-RL complexes. The results highlight how RL and SDS follow similar overall rules of self-assembly and interactions with proteins, but that differences in the strength of protein-surfactant interactions affect the formed structures.
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Affiliation(s)
- Henriette Gavlshøj Mortensen
- Interdisciplinary Nanoscience Center iNANO, Aarhus University, Aarhus C, Denmark; Department of Chemistry, Aarhus University, Aarhus C, Denmark
| | - Jens Kvist Madsen
- Interdisciplinary Nanoscience Center iNANO, Aarhus University, Aarhus C, Denmark
| | - Kell K Andersen
- Interdisciplinary Nanoscience Center iNANO, Aarhus University, Aarhus C, Denmark
| | - Thomas Vosegaard
- Interdisciplinary Nanoscience Center iNANO, Aarhus University, Aarhus C, Denmark; Department of Chemistry, Aarhus University, Aarhus C, Denmark
| | - G Roshan Deen
- Natural Sciences and Science Education, Nanyang Technological University, Singapore, Singapore
| | - Daniel E Otzen
- Interdisciplinary Nanoscience Center iNANO, Aarhus University, Aarhus C, Denmark; Department of Molecular Biology and Genetics, Aarhus University, Aarhus C, Denmark.
| | - Jan Skov Pedersen
- Interdisciplinary Nanoscience Center iNANO, Aarhus University, Aarhus C, Denmark; Department of Chemistry, Aarhus University, Aarhus C, Denmark.
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28
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Guo J, Miao Z, Wan J, Guo X. Pineapple peel bromelain extraction using gemini surfactant-based reverse micelle – Role of spacer of gemini surfactant. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2017.08.051] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Pandey R, Prabhu AA, Dasu VV. Purification of recombinant human interferon gamma from fermentation broth using reverse micellar extraction: A process optimization study. SEP SCI TECHNOL 2017. [DOI: 10.1080/01496395.2017.1395463] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Rajat Pandey
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati India
| | - Ashish Anand Prabhu
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati India
| | - Veeranki Venkata Dasu
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati India
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Abstract
The rapidly growing field of chemical catalysis is dependent on analytical methods for non-destructive real-time monitoring of chemical reactions in complex systems such as emulsions, suspensions and gels, where most analytical techniques are limited in their applicability, especially if the media is opaque, or if the reactants/products do not possess optical activity. High-resolution ultrasonic spectroscopy is one of the novel technologies based on measurements of parameters of ultrasonic waves propagating through analyzed samples, which can be utilized for real-time non-invasive monitoring of chemical reactions. It does not require optical transparency, optical markers and is applicable for monitoring of reactions in continuous media and in micro/nano bioreactors (e.g., nanodroplets of microemulsions). The technology enables measurements of concentrations of substrates and products over the whole course of reaction, analysis of time profiles of the degree of polymerization and molar mass of polymers and oligomers, evolutions of reaction rates, evaluation of kinetic mechanisms, measurements of kinetic and equilibrium constants and reaction Gibbs energy. It also provides tools for assessments of various aspects of performance of catalysts/enzymes including inhibition effects, reversible and irreversible thermal deactivation. In addition, ultrasonic scattering effects in dispersions allow real-time monitoring of structural changes in the medium accompanying chemical reactions.
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Hayes DG, Ye R, Dunlap RN, Cuneo MJ, Pingali SV, O'Neill HM, Urban VS. Protein extraction into the bicontinuous microemulsion phase of a Water/SDS/pentanol/dodecane winsor-III system: Effect on nanostructure and protein conformation. Colloids Surf B Biointerfaces 2017; 160:144-153. [PMID: 28922633 DOI: 10.1016/j.colsurfb.2017.09.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Revised: 08/22/2017] [Accepted: 09/04/2017] [Indexed: 02/04/2023]
Abstract
Bicontinuous microemulsions (BμEs), consisting of water and oil nanodomains separated by surfactant monolayers of near-zero curvature, are potentially valuable systems for purification and delivery of biomolecules, for hosting multiphasic biochemical reactions, and as templating media for preparing nanomaterials. We formed Winsor-III systems by mixing aqueous protein and sodium dodecyl sulfate (SDS) solutions with dodecane and 1-pentanol (cosurfactant) to efficiently extract proteins into the middle (BμE) phase. Bovine serum albumin (BSA) and cytochrome c partitioned to the BμE phase at 64% and 81% efficiency, respectively, producing highly concentrated protein solutions (32 and 44gL-1, respectively), through release of water and oil from the BμEs. Circular dichroism spectroscopic analysis demonstrated that BSA underwent minor secondary structural changes upon incorporation into BμEs, while the secondary structure of cytochrome c and pepsin underwent major changes. Small-angle x-ray scattering (SAXS) results show that proteins promoted an increase of the interfacial fluidity and surface area per volume for the BμE surfactant monolayers, and that each protein uniquely altered self-assembly in the Winsor-III systems. Cytochrome c partitioned via electrostatic attractions between SDS and the protein's positively-charged groups, residing near the surfactant head groups of BμE monolayers, where it decreased surfactant packing efficiency. BSA partitioned through formation of SDS-BSA complexes via hydrophobic and electrostatic attractive interactions. As the BSA-SDS ratio increased, complexes' partitioning favored BμEs over the oil excess phase due to the increased hydrophilicity of the complexes. This study demonstrates the potential utility of BμEs to purify proteins and prepare nanostructured fluids possessing high protein concentration.
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Affiliation(s)
- Douglas G Hayes
- Department of Biosystems Engineering and Soil Science, University of Tennessee, Knoxville, TN 37996-4531 USA.
| | - Ran Ye
- Department of Biosystems Engineering and Soil Science, University of Tennessee, Knoxville, TN 37996-4531 USA
| | - Rachel N Dunlap
- Department of Biosystems Engineering and Soil Science, University of Tennessee, Knoxville, TN 37996-4531 USA; Biology & Soft Matter Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831-6475, USA
| | - Matthew J Cuneo
- Biology & Soft Matter Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831-6475, USA
| | - Sai Venkatesh Pingali
- Biology & Soft Matter Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831-6475, USA
| | - Hugh M O'Neill
- Biology & Soft Matter Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831-6475, USA
| | - Volker S Urban
- Biology & Soft Matter Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831-6475, USA
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Reverse micellar extraction of lactoferrin from its synthetic solution using CTAB/ n-heptanol system. Journal of Food Science and Technology 2017; 54:3630-3639. [PMID: 29051658 DOI: 10.1007/s13197-017-2824-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 08/03/2017] [Accepted: 08/16/2017] [Indexed: 12/31/2022]
Abstract
The partitioning of Lactoferrin (LF) into the reverse micellar phase formed by a cationic surfactant, cetyltrimethylammonium bromide (CTAB) in n-heptanol from the synthetic solution of LF was studied. The solubilization behaviour of LF into the reverse micellar phase and back extraction using a fresh stripping phase were improved by studying the effect of processing parameters, including surfactant concentration, solution pH, electrolyte salt concentration and addition of alcohol as co-solvent. Forward extraction of 100% was achieved at CTAB concentration of 50 mM in n-heptanol solvent, pH of 10 and 1 M NaCl. The electrostatic force and hydrophobic interaction have major influence on LF extraction during forward and back extraction respectively. The size of the reverse micelles and their corresponding water content were measured at different operating conditions to assess their role on the LF extraction. The present reverse micellar system has potential to solubilise almost all the LF into the reverse micelles during forward extraction and could able to allow back extraction from the reverse micellar phase with addition of small amount of co-solvent.
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Yu T, Lin M, Wan J, Cao X. Molecular interaction mechanisms in reverse micellar extraction of microbial transglutaminase. J Chromatogr A 2017; 1511:25-36. [PMID: 28697931 DOI: 10.1016/j.chroma.2017.07.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 06/23/2017] [Accepted: 07/03/2017] [Indexed: 11/17/2022]
Abstract
Reverse micellar extraction is an efficient and economical alternative for protein purification. In this study, microbial transglutaminase (MTGase) from crude materials was purified using reverse micellar extraction, and the molecular interaction mechanism in reverse micellar extraction of MTGase was explored. By using a molecular simulation study, the interaction mechanism of forward extraction was investigated. The molecular simulation results reveal the interaction of MTGase-water-surfactant is the major driving force for the forward extraction. Further, the effect of ionic strength on molecular interactions in backward extraction was investigated using 1H low-field nuclear magnetic resonance (LF-NMR) and circular dichroism (CD) spectra. In backward extraction, the interactions between water and the other two molecules (MTGase and surfactant molecules) are enhanced while the interactions between target molecules (MTGase) and the other two molecules (water and surfactant molecules) are weakened as the ionic strength increases. Moreover, the effect of size exclusion on backward extraction was also investigated. The results demonstrate size exclusion has limit effect at high ionic strength, and the weakened interaction of MTGase-water-surfactant is the main reason causing the release of the target molecules in backward extraction. This work might provide valuable reference to the MTGase purification and downstream processing.
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Affiliation(s)
- Tingting Yu
- State Key Laboratory of Bioreactor Engineering, Department of Bioengineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Mingxiang Lin
- State Key Laboratory of Bioreactor Engineering, Department of Bioengineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Junfen Wan
- State Key Laboratory of Bioreactor Engineering, Department of Bioengineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Xuejun Cao
- State Key Laboratory of Bioreactor Engineering, Department of Bioengineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
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Koneva A, Safonova E, Kondrakhina P, Vovk M, Lezov A, Chernyshev YS, Smirnova N. Effect of water content on structural and phase behavior of water-in-oil (n-decane) microemulsion system stabilized by mixed nonionic surfactants SPAN 80/TWEEN 80. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.01.020] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Tonova K, Bogdanov MG. Partitioning of α-amylase in aqueous biphasic system based on hydrophobic and polar ionic liquid: Enzyme extraction, stripping, and purification. SEP SCI TECHNOL 2017. [DOI: 10.1080/01496395.2016.1267211] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Konstantza Tonova
- Institute of Chemical Engineering, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Milen G. Bogdanov
- Faculty of Chemistry and Pharmacy, Sofia University “St. Kliment Ohridski”, Sofia, Bulgaria
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Prabhu A. A, Chityala S, Garg Y, Venkata Dasu V. Reverse micellar extraction of papain with cationic detergent based system: An optimization approach. Prep Biochem Biotechnol 2017; 47:236-244. [DOI: 10.1080/10826068.2016.1201685] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Ashish Prabhu A.
- Biochemical Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India
| | - Sushma Chityala
- Biochemical Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India
| | - Yachna Garg
- Biochemical Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India
| | - V. Venkata Dasu
- Biochemical Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India
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Gonçalves KM, Junior II, Papadimitriou V, Zoumpanioti M, Leal ICR, de Souza ROMA, Cordeiro Y, Xenakis A. Nanoencapsulated Lecitase Ultra and Thermomyces lanuginosus Lipase, a Comparative Structural Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:6746-6756. [PMID: 27291999 DOI: 10.1021/acs.langmuir.6b00826] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Two commercially available and widely used enzymes, the parent Thermomyces lanuginosus lipase (TLL) and the shuffled phospholipase A1 Lecitase (Lecitase Ultra), were encapsulated in AOT/isooctane reverse micelles and evaluated regarding their structure and activity. Preparations were also tested as effective biocatalysts. Small-angle X-ray scattering (SAXS), electronic paramagnetic resonance (EPR), and fluorescence spectroscopy were the techniques applied to assess the effects of enzyme incorporation to a reverse micellar nanostructure. SAXS analysis showed that the radius of gyration (Rg) changed from 16 to 38 Å, as the water content (w0) increased. Elongated shapes were more commonly observed than spherical shapes after enzyme encapsulation. EPR studies indicated that enzymes do not participate in the interface, being located in the aqueous center. Fluorescence energy transfer showed that TLL is located in the water core, whereas Lecitase Ultra is closer to the interface. Enzymatic activity toward a standard esterification reaction endured after the enzyme was incorporated into the micelles. The activity of TLL for systems with w0 15 showed the highest conversion yield, 38% in 2 h, while the system with w0 10 showed the highest initial velocity, 0.43 μM/min. This last system had a Rg of 19.3 Å, similar to that of the TLL monomer. Lecitase Ultra showed the highest conversion yields in systems with w0 10, 55% in 2 h. However, the initial rate was much lower than that of TLL, suggesting less affinity for the substrates, which is expected since Lecitase Ultra is a phospholipase. In summary, we here used several spectroscopic and scattering techniques to reveal the shape and stability of TTL and Lecitase Ultra encapsulated systems, which allowed the selection of w0 values to provide optimized enzymatic activity.
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Affiliation(s)
- Karen M Gonçalves
- Faculty of Pharmacy, Federal University of Rio de Janeiro , Rio de Janeiro 21941-902, Brazil
| | - Ivaldo I Junior
- Biocatalysis and Organic Synthesis Group, Chemistry Institute, Federal University of Rio de Janeiro , Rio de Janeiro 21941-909, Brazil
- Department of Biochemical Engineering, School of Chemistry, Federal University of Rio de Janeiro , Rio de Janeiro 21941-909, Brazil
| | - Vassiliki Papadimitriou
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation , Athens 116 35, Greece
| | - Maria Zoumpanioti
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation , Athens 116 35, Greece
| | - Ivana C R Leal
- Faculty of Pharmacy, Federal University of Rio de Janeiro , Rio de Janeiro 21941-902, Brazil
| | - Rodrigo O M A de Souza
- Biocatalysis and Organic Synthesis Group, Chemistry Institute, Federal University of Rio de Janeiro , Rio de Janeiro 21941-909, Brazil
| | - Yraima Cordeiro
- Faculty of Pharmacy, Federal University of Rio de Janeiro , Rio de Janeiro 21941-902, Brazil
| | - Aristotelis Xenakis
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation , Athens 116 35, Greece
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Systematic comparison of the functional physico-chemical characteristics and biocidal activity of microbial derived biosurfactants on blood-derived and breast cancer cells. J Colloid Interface Sci 2016; 479:221-233. [PMID: 27390853 DOI: 10.1016/j.jcis.2016.06.051] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 06/12/2016] [Accepted: 06/21/2016] [Indexed: 01/03/2023]
Abstract
HYPOTHESIS The cytotoxicity of biosurfactants on cell membranes may be influenced by composition of their hydrophilic head and hydrophobic tails. It is hypothesised that they form mixed micelles which exert a detergent-like effect that disrupts the plasma membrane. The functional physico-chemical and biocidal characteristics of four biosurfactants were concurrently investigated to determine which of their structural characteristics may be tuned for greater efficacy. EXPERIMENTS Rhamnolipid-95, rhamnolipid-90, surfactin and sophorolipid were characterised using FTIR, LC-MS, HPLC, surface tension and critical micelle concentration. Their biocidal activity against HEK 293, MCF-7 and THP-1 cell lines were investigated by MTT assay, using doxorubicin as cytotoxic control. Growth curves were established for all cell lines using trypan blue (TB) and MTT assays, corresponding doubling time (DT) and growth rate were obtained and compared. FINDINGS HEK 293 cell-line had the highest growth rate amongst the three cell lines. For TB assay, growth of HEK 293>THP-1 and for MTT, HEK 293>MCF-7 while the DT was in the order of THP-1>MCF-7>HEK 293. Sophorolipid showed anti-proliferative activity comparable to doxorubicin on THP-1>MCF-7>HEK 293. THP-1 showed high sensitivity to sophorolipid with IC50 of 10.50, 25.58 and 6.78(μg/ml) after 24, 48 and 72h respectively. However, sophorolipid was cytotoxic from 24 to 72h on HEK 293 cell lines with IC50 of 21.53, 40.57 and 27.53μg/ml respectively. Although, doxorubicin showed higher anti-proliferative activity than all biosurfactants, it had poorer selectivity index for the same time durations compared to the biosurfactants. This indicates that biosurfactants were more effective for slowing the growth of the tested cancer cell lines and hence may be potential candidates for use in human cancer therapy. Physico-chemical characteristics of the biosurfactants suggest that their mechanism of action may be due to activity on the cell membrane.
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40
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Single-Step Partial Purification of Intracellular β-Galactosidase from Kluyveromyces lactis Using Microemulsion Droplets. Appl Biochem Biotechnol 2016; 180:1000-1015. [DOI: 10.1007/s12010-016-2148-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Accepted: 05/25/2016] [Indexed: 10/21/2022]
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41
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Yu X, Li Q, Wang M, Du N, Huang X. Study on the catalytic performance of laccase in the hydrophobic ionic liquid-based bicontinuous microemulsion stabilized by polyoxyethylene-type nonionic surfactants. SOFT MATTER 2016; 12:1713-1720. [PMID: 26686358 DOI: 10.1039/c5sm02704g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
To formulate a compatible green medium for the conversion of a hydrophobic substrate by a hydrophilic enzyme, we investigated the phase behavior of pseudo ternary hydrophobic ionic liquid (HIL)/buffer/polyoxyethylene-type nonionic surfactant (CnEm)/n-alcohol system and the effects of the components on the formulation of the HIL-based bicontinuous microemulsion. It is found that small head group of the surfactant, high concentration of n-alcohol (medium/long alkyl chain) and low cohesive energy density of the HIL result in low phase transition temperature. In the CnEm stabilized compatible bicontinuous microemulsion, the kinetics of laccase catalyzed oxidation of 2,6-dimethoxyphenol were also investigated. It is found that in addition to temperature, n-alcohol is the key parameter affecting the catalytic performance of laccase, and the optimum n-alcohol depends on the type of HIL as an oil phase. All the kinetic parameters, such as Km, kcat, kcat/Km, and Ea (apparent activation energy), indicate that the bicontinuous microemulsion consisting of [Omim]NTf2/buffer/CnEm/n-hexanol is a suitable medium for the laccase-catalyzed reaction. To the best of our knowledge, this is the first report on the formulation of HIL-based bicontinuous microemulsion for enzyme catalysis.
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Affiliation(s)
- Xinxin Yu
- Key Laboratory of Colloid & Interface Chemistry of the Education Ministry of China, School of Chemistry and Chemical Engineering Shandong University, Jinan 250100, P. R. China.
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42
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He K, Zou Z, Hu Y, Yang Y, Xiao Y, Gao P, Li X, Ye X. Purification of α-glucosidase from mouse intestine by countercurrent chromatography coupled with a reverse micelle solvent system. J Sep Sci 2016; 39:703-8. [PMID: 26663433 DOI: 10.1002/jssc.201501092] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 11/30/2015] [Accepted: 12/03/2015] [Indexed: 11/08/2022]
Abstract
Countercurrent chromatography coupled with a reverse micelle solvent was applied to separate α-glucosidase, which is stable at pH 6.0-8.8, 15-50°C. The separation conditions are as follows: stationary phase: pH 4.0 Tris-HCl buffer phase containing 50 mM Tris-HCl and 50 mM KCl; mobile phase A: isooctane containing 50 mM anionic surfactant sodium di(2-ethylhexyl)sulfosuccinate; mobile phase B: 50 mM Tris-HCl buffer containing 500 mM KCl (pH 8.0); In total, 25 mL (23.9 mg) crude enzyme was injected through the injection valve, the enzymatic reaction and sodium dodecylsulfate polyacrylamide gel electrophoresis results imply that the activity of purified α-glucosidase is 6.63-fold higher than that of the crude enzyme. Therefore, countercurrent chromatography coupled with a reverse micelle solvent is capable for protein separation and enrichment.
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Affiliation(s)
- Kai He
- School of Pharmaceutical Sciences, Southwest University, Chongqing, China.,Department of Clinical Laboratory, Hunan University of Medicine, Hunan, China
| | - Zongyao Zou
- School of Pharmaceutical Sciences, Southwest University, Chongqing, China
| | - Yinran Hu
- School of Pharmaceutical Sciences, Southwest University, Chongqing, China
| | - Yong Yang
- Department of Clinical Laboratory, Hunan University of Medicine, Hunan, China
| | - Yubo Xiao
- School of Pharmaceutical Sciences, Southwest University, Chongqing, China.,Department of Clinical Laboratory, Hunan University of Medicine, Hunan, China
| | - Pincao Gao
- Department of Clinical Laboratory, Hunan University of Medicine, Hunan, China
| | - Xuegang Li
- School of Pharmaceutical Sciences, Southwest University, Chongqing, China
| | - Xiaoli Ye
- School of Life Sciences, Southwest University, Chongqing, China
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43
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Ding X, Cai J, Guo X. Extraction of ovalbumin with gemini surfactant reverse micelles – Effect of gemini surfactant structure. Sep Purif Technol 2016. [DOI: 10.1016/j.seppur.2015.12.042] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Wan J, Guo J, Miao Z, Guo X. Reverse micellar extraction of bromelain from pineapple peel--Effect of surfactant structure. Food Chem 2015; 197:450-6. [PMID: 26616974 DOI: 10.1016/j.foodchem.2015.10.145] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Revised: 10/27/2015] [Accepted: 10/31/2015] [Indexed: 11/29/2022]
Abstract
Pineapple peel is generally disposed or used as compost. This study was focused on extracting bromelain from pineapple peel by using reverse micelles. It was found that gemini surfactant C12-8-C12·2Br (octamethylene-α,ω-bis(dimethyldodecylammonium bromide)) showed distinctive advantage over its monomeric counterpart DTAB (dodecyl trimethyl ammonium bromide); under optimized condition, the bromelain extracted with C12-8-C12·2Br reverse micelle had an activity recovery of 163% and a purification fold of 3.3, while when using DTAB reverse micelle, the activity recovery was 95% and the purification fold was 1.7. Therefore, the spacer of gemini surfactant should play a positive role in bromelain extraction and may suggest the potential of gemini surfactant in protein separation since it has been so far rarely used in relative experiments or technologies.
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Affiliation(s)
- Jing Wan
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, PR China
| | - Jingjing Guo
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, PR China
| | - Zhitong Miao
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, PR China
| | - Xia Guo
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, PR China.
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45
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Su E, Klibanov AM. Low-Transition-Temperature Mixtures (LTTMs) for Dissolving Proteins and for Drug Formulation. Appl Biochem Biotechnol 2015; 177:753-8. [PMID: 26239446 DOI: 10.1007/s12010-015-1777-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Accepted: 07/21/2015] [Indexed: 11/28/2022]
Abstract
Several diverse proteins are found to readily dissolve in neat low-transition-temperature mixtures (LTTMs). They undergo no irreversible denaturation in such unusual solvents, and the resistance of hen egg-white lysozyme against thermoinactivation in LTTMs is greater than in aqueous solution at extreme pHs. Separately, the water-sensitive drug aspirin is found to form concentrated transparent LTTMs, where it is some 10-fold more stable against cleavage than in water.
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Affiliation(s)
- Erzheng Su
- Departments of Chemistry and Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA. .,Enzyme and Fermentation Technology Laboratory, College of Light Industry Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China.
| | - Alexander M Klibanov
- Departments of Chemistry and Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
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46
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Maurya JK, Mir MUH, Singh UK, Maurya N, Dohare N, Patel S, Ali A, Patel R. Molecular investigation of the interaction between ionic liquid type gemini surfactant and lysozyme: A spectroscopic and computational approach. Biopolymers 2015; 103:406-15. [DOI: 10.1002/bip.22647] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 03/01/2015] [Accepted: 03/02/2015] [Indexed: 01/04/2023]
Affiliation(s)
- Jitendra Kumar Maurya
- Biophysical Chemistry Laboratory; Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University); New Delhi 110025 India
| | - Muzaffar Ul Hassan Mir
- Biophysical Chemistry Laboratory; Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University); New Delhi 110025 India
| | - Upendra Kumar Singh
- Biophysical Chemistry Laboratory; Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University); New Delhi 110025 India
| | - Neha Maurya
- Biophysical Chemistry Laboratory; Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University); New Delhi 110025 India
| | - Neeraj Dohare
- Biophysical Chemistry Laboratory; Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University); New Delhi 110025 India
| | - Seema Patel
- Biophysical Chemistry Laboratory; Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University); New Delhi 110025 India
| | - Anwar Ali
- Department of Chemistry; Jamia Millia Islamia (A Central University); New Delhi 110025 India
| | - Rajan Patel
- Biophysical Chemistry Laboratory; Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University); New Delhi 110025 India
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Extraction and purification of beta-amylase from stems of Abrus precatorius by three phase partitioning. Food Chem 2015; 183:144-53. [PMID: 25863622 DOI: 10.1016/j.foodchem.2015.03.028] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 02/24/2015] [Accepted: 03/10/2015] [Indexed: 11/23/2022]
Abstract
The stems of Abrus precatorius were used to extract a beta-amylase enriched fraction. A three phase partitioning method and a Doehlert design with 3 variables (ratio of crude extract/t-butanol, the ammonium sulphate saturation and pH) were used. The data was fitted in a second-order polynomial model and the parameters were optimized to enrich beta-amylase. Experimental responses for the modulation were recovery of activity and the purification factor. The optimal conditions were: a ratio of crude extract/t-butanol of 0.87 (v/v), saturation in ammonium sulphate of 49.46% (w/v) and a pH of 5.2. An activity recovery of 156.2% and a purification factor of 10.17 were found. The enriched enzyme was identified as a beta-amylase and its molecular weight was 60.1kDa. Km and Vmax values were 79.37mg/ml and 5.13U/ml, respectively and the highest activity was registered at a temperature of 70°C and a pH between 6 and 6.5. A significant stabilization of the beta-amylase was observed up to 65°C.
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Cui K, Yuan X, Sun T, Huang H, Peng X, Zhang Y, Zeng G, Fu L. Laccase behavior in the microenvironment of water core within a biosurfactant-based reversed micelles system rhamnolipid/n-hexanol/isooctane/water. SURF INTERFACE ANAL 2015. [DOI: 10.1002/sia.5737] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kailong Cui
- College of Environmental Science and Engineering; Hunan University; Changsha 410082 PR China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University); Ministry of Education; Changsha 410082 PR China
| | - Xingzhong Yuan
- College of Environmental Science and Engineering; Hunan University; Changsha 410082 PR China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University); Ministry of Education; Changsha 410082 PR China
| | - Ting Sun
- College of Environmental Science and Engineering; Hunan University; Changsha 410082 PR China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University); Ministry of Education; Changsha 410082 PR China
| | - Huajun Huang
- College of Environmental Science and Engineering; Hunan University; Changsha 410082 PR China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University); Ministry of Education; Changsha 410082 PR China
| | - Xin Peng
- College of Environmental Science and Engineering; Hunan University; Changsha 410082 PR China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University); Ministry of Education; Changsha 410082 PR China
| | - Yongqiang Zhang
- College of Environmental Science and Engineering; Hunan University; Changsha 410082 PR China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University); Ministry of Education; Changsha 410082 PR China
| | - Guangming Zeng
- College of Environmental Science and Engineering; Hunan University; Changsha 410082 PR China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University); Ministry of Education; Changsha 410082 PR China
| | - Lihuan Fu
- College of Environmental Science and Engineering; Hunan University; Changsha 410082 PR China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University); Ministry of Education; Changsha 410082 PR China
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He S, Shi J, Walid E, Zhang H, Ma Y, Xue SJ. Reverse micellar extraction of lectin from black turtle bean (Phaseolus vulgaris): Optimisation of extraction conditions by response surface methodology. Food Chem 2015; 166:93-100. [DOI: 10.1016/j.foodchem.2014.05.156] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 05/26/2014] [Accepted: 05/30/2014] [Indexed: 10/25/2022]
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