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Chen Y, Du XJ, Zhang Y, Liu XH, Wang XD. Ultrasound extraction optimization, structural features, and antioxidant activity of polysaccharides from Tricholoma matsutake. J Zhejiang Univ Sci B 2017; 18:674-684. [PMID: 28786242 PMCID: PMC5565515 DOI: 10.1631/jzus.b1600239] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 09/12/2016] [Indexed: 01/12/2023]
Abstract
An ultrasonic-assisted technique was employed to extract crude polysaccharide from Tricholoma matsutake fruiting bodies. Single-factor tests and orthogonal experimental design (L9(33)) were used to obtain the optimal extraction conditions. Results showed that the optimal parameters were as follows: ultrasonic temperature, 40 °C; ultrasonic time, 50 min; water to raw material ratio, 25 ml/g; ultrasonic frequency, 45 kHz; and ultrasonic power, 100 W. Three novel T. matsutake polysaccharide (TMP) fractions (TMP30, TMP60, and TMP80) were isolated and purified from TMP by stepwise alcohol precipitation. Their preliminary structural features were determined by high-performance anion-exchange chromatography with pulsed-amperometric detection (HPAEC-PAD) and Fourier transform infrared spectrophotometer (FT-IR) analyses. Furthermore, their in vitro antioxidant activity was investigated in terms of a reducing power assay and the scavenging rates of 2,2-diphenyl-1-picrylhydrazyl (DPPH) and hydroxyl radicals. The order of the various fractions based on their antioxidant activity was TMP80>TMP>TMP60>TMP30. These findings suggested that novel polysaccharide fractions from T. matsutake, especially TMP80, could be promising active macromolecules for biomedical use.
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Affiliation(s)
- Yun Chen
- College of Life Science, Liaocheng University, Liaocheng 252059, China
| | - Xiu-ju Du
- College of Life Science, Liaocheng University, Liaocheng 252059, China
| | - Yang Zhang
- College of Life Science, Liaocheng University, Liaocheng 252059, China
| | - Xin-hua Liu
- Agricultural Science Institute of Liaocheng, Liaocheng 252000, China
| | - Xuan-dong Wang
- College of Life Science, Liaocheng University, Liaocheng 252059, China
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2
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Mesbah K, Verpillot R, Chiari M, Pallandre A, Taverna M. Neutral polymers as coatings for high resolution electrophoretic separation of Aβ peptides on glass microchips. Analyst 2015; 139:6547-55. [PMID: 25356444 DOI: 10.1039/c4an01296h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This study reports a comparison of the performances of two neutral polymers, poly ethylene-oxide (PEO) and poly(dimethylacrylamide-co-allyl glycidyl ether) (EpDMA), in glass microchips to achieve zone electrophoresis separation of several truncated forms of beta amyloid (Aβ) peptides, sharing very similar structures. The peptides were derivatized by FluoProbes 488 NHS to allow their fluorescence detection. Two protocols based either on PEO or EpDMA led to good pH stabilities in addition to a significant reduction of the electroosmotic flow. These two polymer coatings allowed repeatable analyses and high resolution for the simultaneous analysis of three Aβ peptides, Aβ 1-38, Aβ 1-40 and Aβ 1-42, considered as potential biomarkers of Alzheimer's disease. A recovery study showed that EpDMA was superior in reducing the adsorption of the Aβ peptides on the coated inner wall. Finally, the separation method relying on the EpDMA coated microchips was validated as linear using a calibration curve and the LOD was estimated to be close to 200 nM. Despite very short migration distances, different N-terminal or C-terminal truncated Aβ peptides, corresponding to promising biomarker combinations for the future diagnostic, were fully resolved. The method was successfully applied to detect these peptides in spiked cerebrospinal fluid and has provided a first achievement towards the development of a microsystem that would integrate preconcentration and separation steps.
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Affiliation(s)
- Kiarach Mesbah
- Protéines et Nanotechnologies en Sciences Séparatives CNRS UMR 8612, Institut Galien de Paris-Sud, Univ Paris-Sud, Faculté de pharmacie, 92296 Chatenay-Malabry, France.
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KUBO T, OKETANI M, TOMINAGA Y, NAITO T, OTSUKA K. Tunable Molecular Sieving in Gel Electrophoresis Using a Poly(ethylene glycol)-Based Hydrogel. CHROMATOGRAPHY 2014. [DOI: 10.15583/jpchrom.2014.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Takuya KUBO
- Graduate School of Engineering, Kyoto University
| | - Mami OKETANI
- Graduate School of Engineering, Kyoto University
| | - Yuichi TOMINAGA
- Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology
| | | | - Koji OTSUKA
- Graduate School of Engineering, Kyoto University
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Sun M, Lin JS, Barron AE. Ultrafast, efficient separations of large-sized dsDNA in a blended polymer matrix by microfluidic chip electrophoresis: a design of experiments approach. Electrophoresis 2011; 32:3233-40. [PMID: 22009451 DOI: 10.1002/elps.201100260] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2011] [Revised: 05/06/2011] [Accepted: 06/09/2011] [Indexed: 01/23/2023]
Abstract
Double-stranded (ds) DNA fragments over a wide size range were successfully separated in blended polymer matrices by microfluidic chip electrophoresis. Novel blended polymer matrices composed of two types of polymers with three different molar masses were developed to provide improved separations of large dsDNA without negatively impacting the separation of small dsDNA. Hydroxyethyl celluloses with average molar masses of ∼27 kDa and ∼1 MDa were blended with a second class of polymer, high-molar mass (∼7 MDa) linear polyacrylamide. Fast and highly efficient separations of commercially available DNA ladders were achieved on a borosilicate glass microchip. A distinct separation of a 1-kb DNA extension ladder (200-40,000 bp) was completed in 2 min. An orthogonal design of experiments was used to optimize experimental parameters for DNA separations over a wide size range. We find that the two dominant factors are the applied electric field strength and the inclusion of a high concentration of low-molar mass polymer in the matrix solution. These two factors exerted different effects on the separations of small dsDNA fragments below 1 kbp, medium dsDNA fragments between 1 and 10 kbp, and large dsDNA fragments above 10 kbp.
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Affiliation(s)
- Mingyun Sun
- Department of Bioengineering, Stanford University, Stanford, CA 94305-5444, USA
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Salmanowicz BP. Identification and characterization of high-molecular-weight secalins from triticale seeds by capillary zone electrophoresis. Electrophoresis 2010; 31:2226-35. [DOI: 10.1002/elps.200900691] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Abstract
Although there are many publications related to technological or methodological developments of CEC, few focus on the analysis of natural products, especially phytochemical bioactive compounds. This review summarized the application of CEC in the analysis of phytochemical bioactive components, including flavonoids, nucleosides, steroids, lignans, quinones and coumarins, as well as fingerprint analysis of herbs. The strategies for optimization of CEC conditions and detection were also discussed.
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Affiliation(s)
- Feng-qing Yang
- Department of Pharmaceutics, College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P. R. China
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Chen Y, Zhang L, Chen G. Fabrication, modification, and application of poly(methyl methacrylate) microfluidic chips. Electrophoresis 2008; 29:1801-14. [DOI: 10.1002/elps.200700552] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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MAHMOUDIAN L, MELIN J, MOHAMADI MR, YAMADA K, OHTA M, KAJI N, TOKESHI M, NILSSON M, BABA Y. Microchip Electrophoresis for Specific Gene Detection of the Pathogenic Bacteria V. cholerae by Circle-to-Circle Amplification. ANAL SCI 2008; 24:327-32. [DOI: 10.2116/analsci.24.327] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Laili MAHMOUDIAN
- Department of Applied Chemistry, Graduates School of Engineering, Nagoya University
| | - Jonas MELIN
- Department of Genetic and Pathology, Uppsala University, Rudbeck Laboratory
- Biomedical Diagnostic Institute, Dublin City University
| | - Mohamad Reza MOHAMADI
- Laboratory of Macromolecules and Microsystems in Biology and Medicine (MMBM), Department of Physical Chemistry, Institute Curie
| | - Keiko YAMADA
- Department of Molecular Biology, Graduate School of Medicine, Nagoya University
| | - Michio OHTA
- Department of Molecular Biology, Graduate School of Medicine, Nagoya University
| | - Noritada KAJI
- Department of Applied Chemistry, Graduates School of Engineering, Nagoya University
- MEXT Innovative Research Center for Preventive Medical Engineering, Nagoya University
| | - Manabu TOKESHI
- Department of Applied Chemistry, Graduates School of Engineering, Nagoya University
- MEXT Innovative Research Center for Preventive Medical Engineering, Nagoya University
| | - Mats NILSSON
- Department of Genetic and Pathology, Uppsala University, Rudbeck Laboratory
| | - Yoshinobu BABA
- Department of Applied Chemistry, Graduates School of Engineering, Nagoya University
- MEXT Innovative Research Center for Preventive Medical Engineering, Nagoya University
- Plasma Nanotechnology Research Center, Nagoya University
- Health Technology Research Center, National Institute of Advanced Industrial Science and Technology (AIST)
- Institute for Molecular Science, National Institutes of Natural Sciences
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Mahmoudian L, Melin J, Mohamadi MR, Yamada K, Ohta M, Kaji N, Tokeshi M, Nilsson M, Baba Y. Microchip Electrophoresis for Detection of Circle-to-Circle Amplification Products towards Sensitive and Rapid DNA Analysis. CHEM LETT 2007. [DOI: 10.1246/cl.2007.396] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Li P, Li SP, Wang YT. Optimization of CZE for analysis of phytochemical bioactive compounds. Electrophoresis 2006; 27:4808-19. [PMID: 17136720 DOI: 10.1002/elps.200600219] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Advantages of CZE such as high efficiency, low cost, short analysis time, and easy implementation result in its wide applications for analysis of phytochemical bioactive compounds (e.g. flavonoids, alkaloids, terpenoids, phenolic acid, saponins, anthraquinones and coumarins). However, several aspects, including sample preparation, separation, and detection have significant effects on CZE analysis. Therefore, optimization of these procedures is necessary for development of the method. In this review, sample preparation such as extraction method and preconcentration, separation factors including buffer type, concentration and pH, additives, voltage and temperature, as well as detection, e.g. direct and indirect UV detection, LIF and MS were discussed for optimization of CZE analysis on phytochemical bioactive compounds. The optimized strategies were also reviewed.
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Affiliation(s)
- Peng Li
- Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau, China
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Lin YW, Chang HT. Analysis of double-stranded DNA by capillary electrophoresis using poly(ethylene oxide) in the presence of hexadecyltrimethylammonium bromide. J Chromatogr A 2006; 1130:206-11. [PMID: 16597443 DOI: 10.1016/j.chroma.2006.03.050] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2006] [Revised: 03/01/2006] [Accepted: 03/17/2006] [Indexed: 01/23/2023]
Abstract
The impact of hexadecyltrimethylammonium bromide (CTAB) on the separation of ds-DNA by capillary electrophoresis in conjunction with laser-induced fluorescence (CE-LIF) detection using poly(ethylene oxide) (PEO) solution is described. The use of CTAB for improved separation reproducibility and efficiency of DNA has not been demonstrated although it is widely used for controlling the magnitude and direction of electroosmotic flow in CE. With increasing CTAB concentration, the interactions of DNA with ethidium bromide (EtBr) and with the capillary wall decrease. For the separation of DNA fragments with the sizes ranging from several base pairs (bp) to 2,176 bp, a polymer solution consisting of 0.75% poly(ethylene oxide), 100 mM TB buffer (pH 8.0), 25 microg/mL EtBr, and 0.36 microg/mL CTAB is proper. Using the PEO solution, we separated a mixture of DNA markers V (pBR 322/HaeIII digest) and VI (pBR 328/BglI digest and pBR 328/HinfI digest) within 8 min at -375 V/cm, with the limit of detection of 2.0 ng/mL based on the peak height for the 18-bp DNA fragment. The method is highly efficient (>10(6)plate/m), repeatable (RSD of the migration times <1.5%), and sensitive. In addition, it is convenient to fill a capillary (75 microm in diameter) with such a low-viscosity PEO solution by syringe pushing.
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Affiliation(s)
- Yang-Wei Lin
- Department of Chemistry, National Taiwan University, Section 4, Roosevelt Road, Taipei, Taiwan, ROC
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Zhang J, He W, Liang D, Fang D, Chu B, Gassmann M. Designing polymer matrix for microchip-based double-stranded DNA capillary electrophoresis. J Chromatogr A 2006; 1117:219-27. [PMID: 16630623 DOI: 10.1016/j.chroma.2006.03.106] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2006] [Revised: 03/13/2006] [Accepted: 03/22/2006] [Indexed: 11/24/2022]
Abstract
Polyacrylamide (PAM) was used as a model polymer to build up an empirical model that relates polymer molecular weight, polymer concentration and solution viscosity. The desired random copolymers of acrylamide (AM) and N,N-dimethylacrylamide (DMA) used as DNA separation media for different specifications were synthesized under the guidance of the empirical model. The separation performances of rationally designed copolymers were tested in a 1.2 cm long separation channel, simulating microchip-based capillary electrophoresis. pBR322/HaeIII digest was successfully separated with good separation resolution and fast speed. Validation of the sieving ability of our polymers was performed in the Agilent 2,100 Bioanalyzer. The results of the 10 bp (base pair) DNA ladder separation demonstrate the potential of our approach for the sieving matrix in microchip-based electrophoresis.
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Affiliation(s)
- Jun Zhang
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794-3400, USA
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Jabasini M, Murakami Y, Kaji N, Tokeshi M, Baba Y. Low Viscous Separation Media for Genomics and Proteomics Analysis on Microchip Electrophoresis System. Biol Pharm Bull 2006; 29:595-604. [PMID: 16595886 DOI: 10.1248/bpb.29.595] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Microchip electrophoresis has widely grown during the past few years, and it has showed a significant result as a strong separation tool for genomic as well as proteomic researches. To enhance and expand the role of microchip electrophoresis, several studies have been proposed especially for the low viscous separation media, which is an important factor for the success of microchip with its narrow separation channels. In this paper we show an overview for the done researches in the field of low viscous media developed for the use in microchip electrophoresis. For genomic separation studies polyhydroxy additives have been used enhance the separation of DNA at low polymer concentration of HPMC (Hydroxypropylmethyl cellulose) which could keep the viscosity low. Mixtures of poly(ethylene oxide) as well as Hydroxyporpyl cellulose have been successfully introduced for chip separation. Furthermore high molecular mass polyacrylamides at low concentrations have been studied for DNA separation. A mixture of polymer nanoparticle with conventional polymers could show a better resolution for DNA at low concentration of the polymer. For the proteomic field isoelectric focusing on chip has been well overviewed since it is the most viscous separation media which is well used for the protein separation. The different types of isoelectric focusing such as the ampholyte-free type, the thermal type as well as the ampholyte-depended type have been introduced in this paper. Isoelectric focusing on chip with its combination with sodium dodecyl sulfate (SDS) page or free solution could give a better separation. Several application for this low viscous separation medias for either genomic or proteomic could clearly show the importance of this field.
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Affiliation(s)
- Mohammad Jabasini
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Japan.
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