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do Amaral LFM, Pilissão C, Krieger N, Wypych F. Pseudomonas cepacia lipase immobilized on Zn 2Al layered double hydroxides: Evaluation of different methods of immobilization for the kinetic resolution of ( R,S)-1-phenylethanol. BIOCATAL BIOTRANSFOR 2023. [DOI: 10.1080/10242422.2023.2181047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Affiliation(s)
| | - Cristiane Pilissão
- Department of Chemistry and Biology, Federal Technological University of Paraná, Curitiba, Brazil
| | - Nadia Krieger
- Postgraduate Program in Chemistry, Federal University of Paraná, Curitiba, Brazil
- Department of Chemistry, Federal University of Paraná, Curitiba, Brazil
| | - Fernando Wypych
- Postgraduate Program in Chemistry, Federal University of Paraná, Curitiba, Brazil
- Department of Chemistry, Federal University of Paraná, Curitiba, Brazil
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2
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Triggering of Polymer-Degrading Enzymes from Layered Double Hydroxides for Recycling Strategies. Int J Mol Sci 2023; 24:ijms24010831. [PMID: 36614271 PMCID: PMC9821672 DOI: 10.3390/ijms24010831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/14/2022] [Accepted: 12/31/2022] [Indexed: 01/05/2023] Open
Abstract
The use of degrading enzymes in polymer formulation is a very attractive strategy to manage the end-of-life of plastics. However, high temperatures cause the denaturation of enzymes and the loss of their catalytic activity; therefore, protection strategies are necessary. Once protected, the enzyme needs to be released in appropriate media to exert its catalytic activity. A successful protection strategy involves the use of layered double hydroxides: cutinase, selected as a highly degrading polyester hydrolytic enzyme, is thermally protected by immobilization in Mg/Al layered double hydroxide structures. Different triggering media are here evaluated in order to find the best releasing conditions of cutinase from LDH. In detail, phosphate and citrate-phosphate buffers, potassium carbonate, sodium chloride, and sodium sulfate solutions are studied. After the comparison of all media in terms of protein release and activity retained, phosphate buffer is selected as the best candidate for the release of cutinase from LDH, and the effect of pH and concentration is also evaluated. The amount of the enzyme released is determined with the Lowry method. Activity tests are performed via spectrophotometry.
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Strimaite M, Harman CLG, Duan H, Wang Y, Davies GL, Williams GR. Layered terbium hydroxides for simultaneous drug delivery and imaging. Dalton Trans 2021; 50:10275-10290. [PMID: 34254077 DOI: 10.1039/d1dt01251g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Layered rare-earth hydroxides have begun to gather increasing attention as potential theranostic platforms owing to their extensive intercalation chemistry combined with magnetic and fluorescent properties. In this work, the potential of layered terbium hydroxide (LTbH) as a platform for simultaneous drug delivery and fluorescence imaging was evaluated. LTbH-Cl ([Tb2(OH)5]Cl·yH2O) was loaded with three nonsteroidal anti-inflammatory drugs (diclofenac, ibuprofen, and naproxen) via ion-exchange. Drug release studies in phosphate buffered saline (pH = 7.4) revealed all three formulations release their drug cargo rapidly over the course of approximately 5 hours. In addition, solid state fluorescence studies indicated that fluorescence intensity is strongly dependent on the identity of the guest anion. It was postulated that this feature may be used to track the extent of drug release from the formulation, which was subsequently successfully demonstrated for the ibuprofen loaded LTbH. Overall, LTbH exhibits good biocompatibility, high drug loading, and a strong, guest-dependent fluorescence signal, all of which are desirable qualities for theranostic applications.
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Affiliation(s)
- Margarita Strimaite
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK.
| | - Clarissa L G Harman
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK.
| | - Huan Duan
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK.
| | - Yuwei Wang
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK.
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, P.O. Box 98, Beijing, 100029, PR China
| | - Gemma-Louise Davies
- Department of Chemistry, University College London, 20 Gordon St, Bloomsbury, London, WC1H 0AJ, UK
| | - Gareth R Williams
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK.
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Djebbi MA, Boubakri S, Braiek M, Jaffrezic‐Renault N, Namour P, Amara ABH. Chlorpromazine Electro‐oxidation at BDD Electrode Modified with nZVI Nanoparticles Impregnated NiAl LDH. ELECTROANAL 2020. [DOI: 10.1002/elan.201900583] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Mohamed Amine Djebbi
- Laboratoire de Physique des Matériaux Lamellaires et Nanomatériaux Hybrides, Université de CarthageFaculté des Sciences de Bizerte 7021 Zarzouna Tunisie
- Irstea, UR RiverLyCentre de Lyon-Villeurbanne 5 rue de la Doua CS 20244 69625 Villeurbanne France
- Institut des Sciences Analytiques UMR CNRS 5280Université de Lyon 5 rue de la Doua 69100 Villeurbanne France
| | - Saber Boubakri
- Laboratoire Matériaux, Traitement et Analyse, Institut National de Recherche et d'Analyse Physico-chimiqueBiotechPole Sidi-Thabet 2020 Ariana Tunisie
| | - Mohamed Braiek
- Institut des Sciences Analytiques UMR CNRS 5280Université de Lyon 5 rue de la Doua 69100 Villeurbanne France
| | - Nicole Jaffrezic‐Renault
- Institut des Sciences Analytiques UMR CNRS 5280Université de Lyon 5 rue de la Doua 69100 Villeurbanne France
| | - Philippe Namour
- Irstea, UR RiverLyCentre de Lyon-Villeurbanne 5 rue de la Doua CS 20244 69625 Villeurbanne France
| | - Abdesslem Ben Haj Amara
- Laboratoire de Physique des Matériaux Lamellaires et Nanomatériaux Hybrides, Université de CarthageFaculté des Sciences de Bizerte 7021 Zarzouna Tunisie
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Xiang Y, Xiang Y, Jiao Y. Simultaneous disintegration of municipal sludge and generation of ethanol with magnetic layered double hydroxides. BIORESOURCE TECHNOLOGY 2019; 289:121654. [PMID: 31228741 DOI: 10.1016/j.biortech.2019.121654] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 06/12/2019] [Accepted: 06/13/2019] [Indexed: 06/09/2023]
Abstract
In order to investigate the effect of magnetic ZnCaFe-layered double hydroxides (MLDH) on the disintegration of municipal sludge and generation of ethanol, the MLDH was synthesized for use in the treatment of municipal sludge. The results indicated that the disintegration performance of municipal sludge was obviously enhanced by the MLDH under visible light irradiation, and the MLDH could also improve saccharification and fermentation in the dark. The yields of 468.9 mg/g for reducing sugar and 136.3 mg/g for ethanol were achieved respectively when the MLDH was 0.3 mg/mL, pretreatment time was 80 min, simultaneous saccharification and fermentation (SSF) time was 120 h, and enzyme loading was 60 FPU/g. The conversion yields were still higher than that of control group after 6 cycles of the MLDH. Therefore, the recyclable MLDH is promising for the treatment and energy conversion of municipal sludge.
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Affiliation(s)
- Yulin Xiang
- Shaanxi Key Laboratory of Ecological Restoration in Shanbei Mining Area, Yulin University, Yulin 719000, Shaanxi, China.
| | - Yukun Xiang
- Yanshou No.1 Middle School, Harbin 150700, Heilongjiang Province, China
| | - Yurong Jiao
- Shaanxi Key Laboratory of Ecological Restoration in Shanbei Mining Area, Yulin University, Yulin 719000, Shaanxi, China
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Jeung DG, Kim HJ, Oh JM. Incorporation of Glycine max Merrill Extract into Layered Double Hydroxide through Ion-Exchange and Reconstruction. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1262. [PMID: 31491912 PMCID: PMC6781017 DOI: 10.3390/nano9091262] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 08/29/2019] [Accepted: 09/02/2019] [Indexed: 12/16/2022]
Abstract
We incorporated extract of Glycine max Merrill (GM), which is generally known as soybean, into a layered double hydroxide (LDH) nanostructure through two different methods, ion-exchange and reconstruction. Through X-ray diffraction, field-emission scanning electron microscopy, and zeta-potential measurement, GM moiety seemed to be simply attached on the surface of LDH by ion-exchange process, while the extract could be incorporated in the inter-particle pore of LDHs by reconstruction reaction. The quantification exhibited that both incorporation method showed comparable extract loading capacity of 15.6 wt/wt% for GM-LDH hybrid prepared by ion-exchange (GML-I) and 18.6 wt/wt% for GM-LDH hybrid by reconstruction (GML-R). On the other hand, bioactive substance in both GM-LDH hybrids, revealed that GML-R has higher daidzein content (0.0286 wt/wt%) compared with GML-I (0.0108 wt/wt%). According to time-dependent daidzein release, we confirmed that GML-R showed pH dependent daidzein release; a higher amount of daidzein was released in pH 4.5 physiological condition than in pH 7.4, suggesting the drug delivery potential of GML-R. Furthermore, alkaline phosphatase activity and collagen fiber formation on human osteoblast-like MG-63 cells displayed that GML-R had superior possibility of osteoblast differentiation than GML-I. From these results, we concluded that reconstruction method was more effective for extract incorporation than ion-exchange reaction, due to its pH dependent release property and alkaline phosphatase activity.
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Affiliation(s)
- Do-Gak Jeung
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Korea
| | - Hyoung-Jun Kim
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Korea.
| | - Jae-Min Oh
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Korea.
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The Adsorption of Dextranase onto Mg/Fe-Layered Double Hydroxide: Insight into the Immobilization. NANOMATERIALS 2018; 8:nano8030173. [PMID: 29562655 PMCID: PMC5869664 DOI: 10.3390/nano8030173] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 03/14/2018] [Accepted: 03/14/2018] [Indexed: 11/19/2022]
Abstract
We report the adsorption of dextranase on a Mg/Fe-layered double hydroxide (Mg/Fe-LDH). We focused the effects of different buffers, pH, and amino acids. The Mg/Fe-LDH was synthesized, and adsorption experiments were performed to investigate the effects. The maximum adsorption occurred in pH 7.0 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES) buffer, and the maximum dextranase adsorption uptake was 1.38 mg/g (416.67 U/mg); histidine and phenylalanine could affect the adsorption. A histidine tag could be added to the protein to increase the adsorption significantly. The performance features and mechanism were investigated with X-ray diffraction patterns (XRD) and Fourier transform infrared spectra (FTIR). The protein could affect the crystal structure of LDH, and the enzyme was adsorbed on the LDH surface. The main interactions between the protein and LDH were electrostatic and hydrophobic. Histidine and phenylalanine could significantly affect the adsorption. The hexagonal morphology of LDH was not affected after adsorption.
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Manivel P, Suryanarayanan V, Nesakumar N, Velayutham D, Madasamy K, Kathiresan M, Kulandaisamy AJ, Rayappan JBB. A novel electrochemical sensor based on a nickel-metal organic framework for efficient electrocatalytic oxidation and rapid detection of lactate. NEW J CHEM 2018. [DOI: 10.1039/c8nj02118j] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel Pt/Ni-MOF electrode was fabricated for the determination of lactate in cow-milk for the first time.
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Affiliation(s)
- Perumal Manivel
- Electroorganic Division
- CSIR-Central Electrochemical Research Institute
- Karaikudi 630003
- India
| | - Vembu Suryanarayanan
- Electroorganic Division
- CSIR-Central Electrochemical Research Institute
- Karaikudi 630003
- India
| | - Noel Nesakumar
- Electrodics and Electrocatalysis Division
- CSIR-Central Electrochemical Research Institute
- Karaikudi 630003
- India
| | - David Velayutham
- Electroorganic Division
- CSIR-Central Electrochemical Research Institute
- Karaikudi 630003
- India
| | - Kanagaraj Madasamy
- Electroorganic Division
- CSIR-Central Electrochemical Research Institute
- Karaikudi 630003
- India
| | - Murugavel Kathiresan
- Electroorganic Division
- CSIR-Central Electrochemical Research Institute
- Karaikudi 630003
- India
| | - Arockia Jayalatha Kulandaisamy
- Nano Sensors Lab@Centre for Nanotechnology and Advanced Biomaterials (CeNTAB)
- SASTRA Deemed University
- Thanjavur 613401
- India
| | - John Bosco Balaguru Rayappan
- Nano Sensors Lab@Centre for Nanotechnology and Advanced Biomaterials (CeNTAB)
- SASTRA Deemed University
- Thanjavur 613401
- India
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Soussou A, Gammoudi I, Kalboussi A, Grauby-Heywang C, Cohen-Bouhacina T, Baccar ZM. Hydrocalumite Thin Films for Polyphenol Biosensor Elaboration. IEEE Trans Nanobioscience 2017; 16:650-655. [PMID: 28792903 DOI: 10.1109/tnb.2017.2736781] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Hybrid thin films based on Hydrocalumite (Ca2AlCl layered double hydroxide LDH) and tyrosinaseenzyme have been used for the elaboration of a high sensitive amperometric biosensor detecting polyphenols extracted from green tea. Structural properties of LDH nanomaterials were characterized by X-ray powder diffraction and Infra-Red spectroscopy, confirming its crystalline phase and chemical composition. Ca2AlCl-LDHs-thin films were deposited by spin-coating, and studied by atomic force microscopy to obtain information about the surface morphology of this host matrix before and after enzyme's immobilization. Electrochemical study using cyclic voltammetry and chronoamperometry shows good performances of the built-in biosensor with a high sensitivity for polyphenols concentrations ranging from 24 pM to and a limit of detection of 1.2 pM.
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Djebbi MA, Bouaziz Z, Elabed A, Sadiki M, Elabed S, Namour P, Jaffrezic-Renault N, Amara ABH. Preparation and optimization of a drug delivery system based on berberine chloride-immobilized MgAl hydrotalcite. Int J Pharm 2016; 506:438-48. [DOI: 10.1016/j.ijpharm.2016.04.048] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 04/07/2016] [Accepted: 04/12/2016] [Indexed: 12/31/2022]
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