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Azhagesan A, Chandrasekaran N, Mukherjee A. Multispectroscopy analysis of polystyrene nanoplastic interaction with diastase α-amylase. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 247:114226. [PMID: 36306622 DOI: 10.1016/j.ecoenv.2022.114226] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 10/15/2022] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
The digestive enzyme of plant are generally α-amylase. They functions enzyme that breakdown starch into maltose and sugars. This happens in the endosperm of the seed. Due to pollutants, this process get happened one of emergent xenobiotics are micro and nano plastics. This study involves the interaction 100 nm size of polystyrene nano plastic (PSNPs) on α-amylase. The hyperchromism of α-amylase - PSNPs conjugate's revealed that ground-state complex in a microenvironment. Fluorescence quenching happened when the concentration of PSNPs was increased. The Stern Volmer plot revealed binding constant (Ka) was 1.904 × 1019 M-1. S-1 while the quenching constant (Kq) was 1.036 × 1011 M-1, the blue shift of the peak showed static quenching. The binding constant was KA = 4.2 × 1012, the number of binding site on PSNPs for α-amylase was n = 1.12. The synchronous result showed a gradual reduction in the intensity of Trp residues because when the α-amylase interacts with PSNPs short-range π-π interaction happens around the Trp163 residues. The enzyme activity of α-amylase by 44 % and its IC50 value was found to be 100 µg/mL. The enzyme kinetics (Vmax) analysis showed the type of inhibition with and without PSNPs Vmax 769 and Vmax 303 µg/mL/min, uncompetitive inhibition respectively. The effect of PSNPs on the enzymatic activity of α-amylase showed structural alterations of the protein. Therefore the in vitro and in silico studies were shown evidence of interaction between α-amylase and PSNPs leads to conformational structural changes in α-amylase.
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Affiliation(s)
- Ananthaselvam Azhagesan
- Centre for Nanobiotechnology, Vellore Institute of Technology (VIT), Vellore 632 014, Tamil Nadu, India
| | - Natarajan Chandrasekaran
- Centre for Nanobiotechnology, Vellore Institute of Technology (VIT), Vellore 632 014, Tamil Nadu, India.
| | - Amitava Mukherjee
- Centre for Nanobiotechnology, Vellore Institute of Technology (VIT), Vellore 632 014, Tamil Nadu, India
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Hidayat AS, Horino H, Rzeznicka II. Smartphone-Enabled Quantification of Potassium in Blood Plasma. SENSORS 2021; 21:s21144751. [PMID: 34300494 PMCID: PMC8309773 DOI: 10.3390/s21144751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/08/2021] [Accepted: 07/09/2021] [Indexed: 11/27/2022]
Abstract
This work describes a new method for determining K+ concentration, [K+], in blood plasma using a smartphone with a custom-built optical attachment. The method is based on turbidity measurement of blood plasma solutions in the presence of sodium tetraphenylborate, a known potassium precipitating reagent. The images obtained by a smartphone camera are analyzed by a custom image-processing algorithm which enables the transformation of the image data from RGB to HSV color space and calculation of a mean value of the light-intensity component (V). Analysis of images of blood plasma containing different amounts of K+ reveal a correlation between V and [K+]. The accuracy of the method was confirmed by comparing the results with the results obtained using commercial ion-selective electrode device (ISE) and atomic absorption spectroscopy (AAS). The accuracy of the method was within ± 0.18 mM and precision ± 0.27 mM in the [K+] range of 1.5–7.5 mM when using treated blood plasma calibration. Spike tests on a fresh blood plasma show good correlation of the data obtained by the smartphone method with ISE and AAS. The advantage of the method is low cost and integration with a smartphone which offers possibility to measure [K+] on demand and in remote areas where access to hospitals is limited.
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Affiliation(s)
- Achmad Syarif Hidayat
- Shibaura Institute of Technology, Graduate School of Engineering and Science, 3-7-5 Koto-ku, Tokyo 135-8548, Japan;
| | - Hideyuki Horino
- Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 982-8577, Japan;
| | - Izabela I. Rzeznicka
- Shibaura Institute of Technology, Graduate School of Engineering and Science, 3-7-5 Koto-ku, Tokyo 135-8548, Japan;
- Correspondence:
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Zhao L, Luo F, Wang A, Zhang J, Wang Y, Zhao L, Wang Z, Pu Q. Quick stabilization of capillary for rapid determination of potassium ions in the blood of epilepsy patients by capillary electrophoresis without sample pretreatment. Electrophoresis 2020; 41:1273-1279. [PMID: 32358896 DOI: 10.1002/elps.202000022] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 04/21/2020] [Accepted: 04/23/2020] [Indexed: 11/07/2022]
Abstract
Mutations in the potassium channel genes may be linked to the development of epilepsy and affect the blood potassium levels. Therefore, accurate determination of potassium in the blood will be critical to diagnose the cause of epilepsy. CE is a competent technique for the fast detection of multiple ions, but complicated matrices of a blood sample may cause significant variation of migration times and the peak shape. In this work, a procedure for rapid stabilization of the capillary inner surface through preflushing of a blood sample was employed. The process takes only 40 min for a capillary and then it can be used for more than 2 weeks. No pretreatment of the blood sample or other surface modification of the capillary is needed for the analysis. The RSDs of the migration time and peak area were reduced to 1.5 and 5.1% from 12.6 and 14.5%, respectively. The proposed method has been successfully applied to the determination of the potassium contents in the blood sample of patients with epilepsy at different stages. The recoveries of potassium ions in these blood samples are in a range from 86.5 to 104.5%.
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Affiliation(s)
- Litao Zhao
- School of Pharmacy, Lanzhou University, Lanzhou, P. R. China
| | - Fanghong Luo
- School of Pharmacy, Lanzhou University, Lanzhou, P. R. China
| | - Anting Wang
- School of Pharmacy, Lanzhou University, Lanzhou, P. R. China
| | - Jing Zhang
- School of Pharmacy, Lanzhou University, Lanzhou, P. R. China
| | - Yuanhang Wang
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, P. R. China
| | - Liangtao Zhao
- TSing Biomedical Research Center, The Second Hospital of Lanzhou University, Lanzhou, P. R. China
| | - Zhaoyan Wang
- School of Pharmacy, Lanzhou University, Lanzhou, P. R. China
| | - Qiaosheng Pu
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, P. R. China
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Adarsh KS, Singh MK, Kotresh MG, Inamdar LS, Shivkumar MA, Jagatap BN, Mulimani BG, Inamdar SR. Spectroscopic investigation of water-soluble alloyed QDs with bovine serum albumin. LUMINESCENCE 2016; 32:35-42. [PMID: 27118686 DOI: 10.1002/bio.3145] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Revised: 03/19/2016] [Accepted: 03/19/2016] [Indexed: 11/10/2022]
Abstract
We present here a systematic investigation on the interaction between a water-soluble alloyed semiconductor quantum dot and bovine serum albumin using various spectroscopic techniques i.e. fluorescence quenching, resonance light scattering and synchronous fluorescence spectroscopy. The analysis of fluorescence spectrum and fluorescence intensity indicates that the intrinsic fluorescence of bovine serum albumin (BSA) gets quenched by both static and dynamic quenching mechanism. The Stern-Volmer quenching constants, energy transfer efficiency parameters, binding parameters and corresponding thermodynamic parameters (ΔH0 , ΔS0 and ΔG0 ) have been evaluated by using van 't Hoff equation at different temperatures. A positive entropy change with a positive enthalpy change was observed suggesting that the binding process was an entropy-driven, endothermic process associated with the hydrophobic effect. The intermolecular distance (r) between donor (BSA) and acceptor (CdSeS/ZnS quantum dots) was estimated according to Förster's theory of non-radiative energy transfer. The synchronous fluorescence spectra revealed a blue shift in the emission maxima of tryptophan which is indicative of increasing hydrophobicity. Negative ΔG0 values implied that the binding process was spontaneous. It was found that hydrophobic forces played a role in the quenching process. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- K S Adarsh
- Laser Spectroscopy Programme & UGC-Centre with Potential for Excellence, Department of Physics, Karnatak University, Dharwad, 580003, India
| | - M K Singh
- Atomic & Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India
| | - M G Kotresh
- Laser Spectroscopy Programme & UGC-Centre with Potential for Excellence, Department of Physics, Karnatak University, Dharwad, 580003, India
| | - Laxmi S Inamdar
- Molecular Endocrinology and Development Laboratory, Department of Zoology, Karnatak University, Dharwad, 580003, India
| | - M A Shivkumar
- Laser Spectroscopy Programme & UGC-Centre with Potential for Excellence, Department of Physics, Karnatak University, Dharwad, 580003, India
| | - B N Jagatap
- Atomic & Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India
| | | | - S R Inamdar
- Laser Spectroscopy Programme & UGC-Centre with Potential for Excellence, Department of Physics, Karnatak University, Dharwad, 580003, India
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Moosavi R, Afkhami A, Madrakian T. A simple cyanide sensing probe based on Ag/Fe3O4nanoparticles. RSC Adv 2015. [DOI: 10.1039/c4ra14806a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
The first direct approach in ultra-trace cyanide determination through a simple, selective and rapid reaction by simply-synthesized recyclable Ag/Fe3O4nanostructures.
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Affiliation(s)
| | - Abbas Afkhami
- Faculty of Chemistry
- Bu-Ali Sina University
- Hamedan
- Iran
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6
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Mu Q, Jiang G, Chen L, Zhou H, Fourches D, Tropsha A, Yan B. Chemical basis of interactions between engineered nanoparticles and biological systems. Chem Rev 2014; 114:7740-81. [PMID: 24927254 PMCID: PMC4578874 DOI: 10.1021/cr400295a] [Citation(s) in RCA: 358] [Impact Index Per Article: 35.8] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Qingxin Mu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, China, 250100
- Present address: Department of Pharmaceutical Chemistry, School of Pharmacy, University of Kansas, Lawrence, Kansas, 66047
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Lingxin Chen
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Hongyu Zhou
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, China, 250100
- Department of Surgery, Emory University School of Medicine, Atlanta, Georgia, 30322, U.S.A
| | | | - Alexander Tropsha
- Laboratory for Molecular Modeling, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina, 27599
| | - Bing Yan
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, China, 250100
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7
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Hu S, Shang ZB, Wang Y. Effect of dextran molecular weight on resonance light-scattering of quantum dots modified with dextran and concanavalin A. CHINESE CHEM LETT 2011. [DOI: 10.1016/j.cclet.2010.07.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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8
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Hu S, Shang ZB, Wang Y, Jin WJ. Dextran-coated CdSe quantum dots for the optical detection of monosaccharides by resonance light-scattering technique. Supramol Chem 2010. [DOI: 10.1080/10610278.2010.497211] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Shuang Hu
- a School of Chemistry and Chemical Engineering, Shanxi University , Taiyuan, 030006, P.R. China
- c School of Pharmacy, Shanxi Medical University , Taiyuan, 030001, P.R. China
| | - Zhuo Bin Shang
- a School of Chemistry and Chemical Engineering, Shanxi University , Taiyuan, 030006, P.R. China
| | - Yu Wang
- a School of Chemistry and Chemical Engineering, Shanxi University , Taiyuan, 030006, P.R. China
| | - Wei Jun Jin
- a School of Chemistry and Chemical Engineering, Shanxi University , Taiyuan, 030006, P.R. China
- b College of Chemistry, Beijing Normal University , Beijing, 100875, P.R. China
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Li Y, Li H, Sun Y, Chen X, Zhu Y. A study of complex formation between polyacrylic acid and poly(ethylene oxide) by near resonance Rayleigh scattering. APPLIED SPECTROSCOPY 2010; 64:682-686. [PMID: 20537236 DOI: 10.1366/000370210791414371] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A series of near resonance Rayleigh scattering (NRRS) experiments has been performed on the phase behavior of complex formation between polyacrylic acid (PAA) and poly(ethylene oxide) (POE). On the basis of the theory of resonance scattering, as one new method compared to resonance Rayleigh scattering (RRS), NRRS was demonstrated to investigate polymer solutions. The results indicated that the complex formation induces an increase of the intensity of resonance scattering and the phase segregation leads to distortion of the resonance scattering spectrum with decreasing pH value. The collapse of macromolecular chains is attributed to the contraction of PAA chains and association between PAA and POE. Moreover, NRRS can show more information than RRS on the basis of their scattering spectra.
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Affiliation(s)
- Yunbo Li
- School of Materials Science & Engineering, Shanghai University, Shanghai 200072, China.
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10
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Chen H, Zou QC, Yu H, Peng M, Song GW, Zhang JZ, Chai SG, Zhang Y, Yan CE. Study on interaction between cationic polystyrene nanoparticles and DNA, and the detection of DNA by resonance light scattering technology. Mikrochim Acta 2010. [DOI: 10.1007/s00604-010-0297-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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11
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Wu L, Mu D, Gao D, Deng X, Tian Y, Zhang H, Yu A. Determination of protein by resonance light scattering technique using dithiothreitol-sodium dodecylbenzene sulphonate as probe. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2009; 72:178-181. [PMID: 19019725 DOI: 10.1016/j.saa.2008.09.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2008] [Revised: 08/06/2008] [Accepted: 09/26/2008] [Indexed: 05/27/2023]
Abstract
The resonance light scattering (RLS) spectra of bovine serum albumin (BSA)-dithiothreitol (DTT)-sodium dodecylbenzene sulphonate (SDBS) and its analytical application were investigated. The RLS intensity of this system can be effectively enhanced in the presence of BSA. Based on the enhanced RLS intensity, a simple assay for BSA was developed. The experimental results indicate that the enhanced RLS intensity is proportional to the concentration of BSA in the range from 1.0 x 10(-8) to 7.5 x 10(-7) mol L(-1) with the determination limit of 5.0 x 10(-9) mol L(-1). The effects of pH, concentration of SDBS and DTT on the RLS enhancement were discussed. Most metal ions have little interference on the determination of BSA. Some synthetic and real samples were analyzed, and the results obtained were in good agreement with those obtained by Bradford method.
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Affiliation(s)
- Lihang Wu
- College of Chemistry, Jilin University, Changchun 130012, PR China
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12
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Study of the Interaction between Trans-resveratrol and BSA by the Multi-spectroscopic Method. J SOLUTION CHEM 2008. [DOI: 10.1007/s10953-008-9323-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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13
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Cao H, Wu DH. Rapid and sensitive determination of trace chloride ion in drinks using resonance light scattering technique. JOURNAL OF AUTOMATED METHODS & MANAGEMENT IN CHEMISTRY 2008; 2008:745636. [PMID: 18509483 PMCID: PMC2396213 DOI: 10.1155/2008/745636] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2007] [Accepted: 04/21/2008] [Indexed: 05/26/2023]
Abstract
A resonance light scattering (RLS) technique to determine chloride ions in drinks was developed. Chloride ions were found to bind Ag(+) forming AgCl aggregates that produced intense resonance scattering light. Effects of factors such as acidity, ionic strength, and coexistent interferents on the RLS of AgCl aggregates were investigated. The pH of solution almost did not affect the production of RLS and few foreign species interfered with the detection of chloride ions. The resonance scattering light intensity at the maximum peak of 571 nm was linear to the concentration of chloride ions in the range of 1.42-8.52 ng mL(-1) with a detection limit of 0.71 ng mL(-1). To determine the feasibility of the proposed method, some samples of water and drinks were analyzed. The attained results were in agreement with that of ion-selective electrode method. Good recovery results were also obtained with the range of 94.08-105.63%. The sensitivity and selectivity of the RLS method are high enough to determine trace amounts of chloride ions without any significant interference from high concentration of other components such as common anions and cations.
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Affiliation(s)
- Hui Cao
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226007, China
| | - Dong Hui Wu
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226007, China
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Shi X, Cao H, Ren F, Xu M. Spectroscopic Analysis of the Binding Interaction Between Tinidazole and Bovine Serum Albumin (BSA). Chem Biodivers 2007; 4:2780-90. [DOI: 10.1002/cbdv.200790227] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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15
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Chen JW, Yang CS, Ren FL, Xiao JB, Xu M. Highly sensitive determination of chloride ions in serum using a Rayleigh light scattering technique. MEASUREMENT SCIENCE AND TECHNOLOGY 2007. [DOI: 10.1088/0957-0233/18/7/034] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Xiao JB, Chen JW, Ren FL, Yang CS, Xu M. Use of 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide for rapid detection of methicillin-resistant Staphylococcus aureus by resonance light scattering. Anal Chim Acta 2007; 589:186-91. [PMID: 17418180 DOI: 10.1016/j.aca.2007.02.073] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2007] [Revised: 02/28/2007] [Accepted: 02/28/2007] [Indexed: 02/08/2023]
Abstract
A rapid detection of methicillin-resistant Staphylococcus aureus (MRSA) using resonance light scattering (RLS) on an ordinary fluorescence spectrometer was developed. The viable MRSA reduced 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) to produce insoluble particles which displayed intense resonance scattering light. It showed a linear relationship between the number of viable MRSA and the RLS intensity. Dead MRSA were unable to reduce MTT. MRSA exposed to flavonoids extracted from Marchantia convoluta (MCF) showed a MCF concentration-dependent inhibition of the ability to reduce MTT. The RLS could, in combination with the MTT assay, be a rapid and sensitive detection method for vitro-cultured MRSA.
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Affiliation(s)
- Jian Bo Xiao
- College of Chemistry and Chemical Engineering, Central South University, Changsha, PR China
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