scholarly journals Synthesis and Antibacterial Activity of Metal-Containing Ultraviolet-Cured Wood Floor Coatings

Polymers ◽  
2021 ◽  
Vol 13 (18) ◽  
pp. 3022
Author(s):  
Chia-Wei Chang ◽  
Kun-Tsung Lu
Keyword(s):  
Escherichia Coli ◽  
Antibacterial Activity ◽  
Antibacterial Agent ◽  
Antibacterial Agents ◽  
Film Properties ◽  
Antibacterial Test ◽  
X Ray ◽  
Coating Application ◽  
E Coli ◽  
Wood Floor

In our previous report, the antibacterial agents with different metals, mono(hydroxyethoxyethyl)phthalate [M(HEEP)2, M = Zn, Mn, and Ca], were synthesized. For increasing their yields, modified synthesis and purified processes were further investigated. The result of energy-dispersive X-ray spectroscopy showed the M(HEEP)2 could be stable and successfully synthesized, and their yields were raised to 73–85% from our previous report of 43–55%. For ultraviolet-cured wood floor coating application, the Zn(HEEP)2 was selected as an antibacterial agent and mixed with commercial UV wood floor coating. The effects on the antibacterial activity of UV films with different Zn(HEEP)2 additions of 0, 4, 8, and 12 phr as well as the commercial nano-Ag of 12 phr against Escherichia coli were evaluated. In the static antibacterial test, the UV films with Zn(HEEP)2 additions had similar antibacterial activity of 57–59%. In another dynamic shaking antibacterial test, the film containing 12 phr Zn(HEEP)2 had the best antibacterial activity among all the UV films. On the film properties, the Zn(HEEP)2-containing UV films had lower gloss and abrasion resistance, and slightly increased the hardness than those of UV film without Zn(HEEP)2 addition. However, there were no noticeable differences in mass retention, lightfastness, and thermal stability between UV films with and without the Zn(HEEP)2 addition. In this study, the 12 phr Zn(HEEP)2-containing UV film provided the best antibacterial activity against E. coli and had the balanced film properties for application on the UV wood floor coating.

scholarly journals Hand Sanitizer Ekstrak Daun Pucuk Idat (Cratoxylum glaucum) sebagai Antibakteri Staphylococcus aureus dan Escherichia coli

2020 ◽  
Vol 16 (2) ◽  
pp. 227
Author(s):  
Megawati Ayu Putri ◽  
Marhan Ebit Saputra ◽  
Ike Nur Amanah ◽  
Siska Musiam ◽  
Verry Andre Fabiani
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Leaf Extract ◽  
Skin Irritation ◽  
Test Results ◽  
Antibacterial Test ◽  
E Coli ◽  
Hand Sanitizer ◽  
Carboxymethyl Cellulose Sodium

<p><span id="docs-internal-guid-2cebd816-7fff-d997-4dfd-796d046d0d3b"><span>Daun pucuk idat merupakan tanaman lokal Bangka Belitung yang memiliki aktivitas antibakteri terhadap </span><span>Staphylococcus aureus </span><span>dan</span><span> Escherichia coli.</span><span>Sebagai upaya pemanfaatan potensi lokal maka dibuat suatu produk sediaan gel </span><span>hand sanitizer</span><span> yang praktis dan ekonomis. </span><span>Ekstrak daun pucuk idat diperoleh dengan metode maserasi menggunakan pelarut aseton. Ekstrak yang dihasilkan diformulasikan dalam berbagai konsentrasi ekstrak daun pucuk idat (40%, 60%, 80%, dan 100%) dengan penambahan </span><span>carboxymethyl cellulose sodium</span><span> (</span><span>CMC-Na) 0,25 g, gliserin 1 mL, propilenglikol 0,5 mL serta akuades        10 mL. Setiap formulasi gel </span><span>handsanitizer</span><span> dilakukan pengujian stabilitas fisik meliputi uji organoleptis, uji homogenitas, uji daya sebar, uji pH, uji iritasi kulit serta uji aktivitas antibakteri.</span><span> </span><span> Hasil uji organoleptik menunjukkan bahwa semua konsentrasi </span><span>hand sanitizer </span><span>berbentuk gel, berwarna kuning muda, berbau dan homogen. Uji pH dan daya sebar gel</span><span> hand sanitizer</span><span> telah memenuhi ketentuan SNI No. 06-2588. Pengujian iritasi kulit tidak menimbulkan kemerahan, gatal-gatal dan tidak mengakibatkan kulit menjadi kasar pada punggung tangan sukarelawan. Berdasarkan uji sifat fisik gel</span><span> hand sanitizer </span><span>yang dihasilkan memiliki sifat fisik yang serupa dengan gel </span><span>hand sanitizer </span><span>komersial. Hasil uji antibakteri hand sanitizer ekstrak daun pucuk idat terhadap </span><span>E. coli</span><span> dengan konsentrasi ekstrak daun pucuk idat 40%, 60%, 80%, dan 100% diperoleh diameter zona hambat berturut-turut sebesar 11,5 mm, 17,4 mm, 19,3 mm dan 19,3 mm, sedangkan pada bakteri </span><span>S. aureus</span><span> diperoleh diameter zona hambat berturut-turut sebesar 17,1 mm, 24,2 mm, 27,4 mm, dan  18 mm. Hasil uji antibakteri menunjukkan bahwa sediaan gel </span><span>hand sanitizer </span><span>ekstrak aseton daun pucuk idat memiliki aktivitas antibakteri terhadap bakteri </span><span>E. coli </span><span>dan </span><span>S. aureus</span><span>.</span></span></p><p><span><span><span id="docs-internal-guid-50d6ff2c-7fff-2e66-45f1-73cf49e6527a"><strong>Hand Sanitizer of Leaves Extract of Cratoxylum glaucum as Antibacterial of Staphylococcus aureus and Escherichia coli. </strong><span>Cratoxylum glaucum</span><span> leaves is local plants of Bangka Belitung which have antibacterial activity against </span><span>S. aureus</span><span> and </span><span>E. coli</span><span>. As an effort to explore local potential, a practical and economical gel hand sanitizer product was prepared. </span><span>Cratoxylum glaucum</span><span> leaves extract was obtained by maceration method using acetone. The extract was formulated in various concentrations of </span><span>Cratoxylum glaucum</span><span> leaf extract (40%, 60%, 80%, and 100%) with the addition of 0.25 g carboxymethyl cellulose sodium (CMC-Na), 1 mL glycerin, 0.5 mL propylene glycol and 10 mL distilled water. Each concentration of the hand sanitizer gel was tested for physical stability including organoleptic, homogenity, spreadability, pH, skin irritation and antibacterial activity test. The organoleptic test results showed that all concentrations of hand sanitizers formed gel with light yellow color, smelly odor and homogeneous form. The analysis of pH and spreadability of hand sanitizer gel has fulfilled SNI No. 06-2588. The skin irritation testing does not cause redness, itching, and rough skin on the back of volunteer hands. Based on the physical properties test, the resulting hand sanitizer gel has physical properties similar to commercial hand sanitizer gel. The results of the antibacterial test of hand sanitizer against </span><span>E. coli</span><span> with </span><span>Cratoxylum glaucum</span><span> leaf extract concentrations of 40%, 60%, 80%, and 100% obtained the diameter inhibitory zones of 11.5 mm, 17.4 mm, 19.3 mm, and 19.3 mm, respectively. Meanwhile, the results of the antibacterial test of hand sanitizer against </span><span>S. aureus</span><span> bacteria with concentration of 40%, 60%, 80%, and 100% shows that the inhibition zone diameters were 17.1 mm, 24.2 mm, 27.4 mm, and 18 mm, respectively. The antibacterial test results shows that the gel hand sanitizer prepared has antibacterial activity against </span><span>E. coli</span><span> and </span><span>S. aureus</span><span> bacteria.</span></span></span></span></p>

scholarly journals Properties of Binuclear Rhodium(II) Complexes and Their Antibacterial Activity

1996 ◽  
Vol 3 (4) ◽  
pp. 185-195 ◽  
Author(s):  
Florian P. Pruchnik ◽  
Małgorzata Bień ◽  
Tadeusz Lachowicz
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Nmr Spectroscopy ◽  
Antibacterial Agents ◽  
Structure And Properties ◽  
E Coli ◽  
Nitrogen Ligands ◽  
Low Activity

Binuclear rhodium(II) complexes [Rh2Cl2(μ-OOCR)2(N-N)2], [Rh2(μ-OOCR)2(N-N)2(H2O)2](RCOO)2 and [Rh2Cl2(μ-OOCCH3)(terpy)2](H3O)Cl2.9H2O (R = H, Me, Bun,ph, PhCHOH; N-N = 2,2′-bipyridine (bpy), 1,10-phenanthroline (phen), 2,9-dimethyl-1,10-phenanthroline (dmp) and 6,7-dimethyl-2,3- di(2-pyridyl)quinoxaline (dmpq); terpy 2,2′:6′,2′′-terpyridine) have been synthesized and their structure and properties have been studied by electronic, IR and H1 NMR spectroscopy. Antibacterial activity of these complexes against Staphylococcus aureus and Escherichia coli has been investigated. The most active antibacterial agents against S. aureus were [Rh2(OOCPh)2(phen)2(H2O)2]2+, [Rh2(OOCPh)2(dmpq)2(H2O)2]2+, [Rh2(OOCBu)2(phen)2(H2O)2]2+ and [Rh2-(OOCBu)2(bpy)2(H2O)2]2+ which were considerably more active than the appropriate nitrogen ligands. The complexes show rather low activity against E. coli.

scholarly journals 5-Bromo-1-(4-chlorobenzyl)-1H-indole-2-carboxamides as new potent antibacterial agents

2018 ◽  
Vol 24 (6) ◽  
pp. 327-332 ◽  
Author(s):  
Yogesh D. Mane ◽  
Smita S. Patil ◽  
Dhanraj O. Biradar ◽  
Bhimrao C. Khade
Keyword(s):  
Escherichia Coli ◽  
Antibacterial Activity ◽  
Antibacterial Agents ◽  
Inhibitory Concentration ◽  
Antibacterial Activities ◽  
Gram Negative Bacteria ◽  
Internal Standards ◽  
Gram Negative ◽  
E Coli ◽  
High Antibacterial Activity

Abstract Ten 5-bromoindole-2-carboxamides were synthesized, characterized and evaluated for antibacterial activity against pathogenic Gram-negative bacteria Klebsiella pneumoniae, Escherichia coli, Pseudomonas aeruginosa and Salmonella Typhi using gentamicin and ciprofloxacin as internal standards. Compounds 7a–c, 7g and 7h exhibit high antibacterial activity with a minimum inhibitory concentration (MIC) of 0.35–1.25 μg/mL. Compounds 7a–c exhibit antibacterial activities that are higher than those of the standards against E. coli and P. aeruginosa.

scholarly journals Binuclear Rhodium(II) Complexes With Selective Antibacterial Activity

1997 ◽  
Vol 4 (2) ◽  
pp. 81-88 ◽  
Author(s):  
Małgorzata Bień ◽  
Tadeusz M. Lachowicz ◽  
Agnieszka Rybka ◽  
Florian P. Pruchnik ◽  
Lilianna Trynda
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Nmr Spectroscopy ◽  
Antibacterial Agents ◽  
Structure And Properties ◽  
E Coli ◽  
Nitrogen Ligands ◽  
And Staphylococcus Aureus ◽  
Low Activity

Binuclear rhodium(II) complexes [Rh2Cl2(μ-OOCR)2(N-N)2] {R = H, Me; N-N = 2,2'-bipyridine (bpy), 1,10-phenanthroline (phen)} and [Rh2(μ-OOCR)2(N-N)2(H2O)2](RCOO)2 (R = Me, Et;) have been synthesized and their structure and properties have been studied by electronic, IR and H1 NMR spectroscopy. Antibacterial activity of these complexes against Escherichia coli and Staphylococcus aureus has been investigated. The most active antibacterial agents against E. coli were [Rh2Cl2(μ-OOCR)2(N-N)2] and [Rh2(μ-OOCR)2(N-N)2(H2O)2](RCOO)2 {R = H and Me} which were considerably more active than the appropriate nitrogen ligands. The complexes show low activity against S. aureus. The activity of the complexes [Rh2(OOCR)2(N-N)2(H2O)2](OOCR)2 against E. coli decreases in the series: R=H≅CH3>C2H5>C3H7≅C4H9. The reverse order was found in the case of S. aureus.

scholarly journals Antibacterial epoxy composites with addition of natural Artemisia annua waste

e-Polymers ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 262-271
Author(s):  
Chun Wu ◽  
Yongsi Yan ◽  
Yucheng Wang ◽  
Ping Sun ◽  
Rongrong Qi
Keyword(s):  
Escherichia Coli ◽  
Mechanical Property ◽  
Antibacterial Activity ◽  
Antibacterial Agent ◽  
Epoxy Resins ◽  
Artemisia Annua ◽  
Antibacterial Property ◽  
Curing Temperature ◽  
Epoxy Composites ◽  
E Coli

AbstractAntibacterial epoxy resins (EP) have great potential in medical and electronic fields. During the process of extracting artemisinin from Artemisia annua, artemisia naphtha (AN) is generated as waste. The components of AN show antibacterial activity, and hence, it is introduced as a novel antibacterial agent in the epoxy matrix. In this study, the properties of epoxy resins with various AN loading were investigated. The results showed that AN/EP composites presented strong antibacterial activity against Escherichia coli and Staphylococcus aureus at the sterilization ratio of 100% against E. coli and 99.96% against S. aureus, respectively. Meanwhile, the thermal properties (curing temperature and glass transition temperature) of AN/EP composites remained well, and the mechanical property was even improved. Especially, the flexural strength of AN/EP composites could be reinforced by 62.9% when the content of AN was up to 5 wt%. For comparison, Artemisia annua powder (AAP), which was directly smashed from natural A. annua, was also mixed with epoxy resins as an antibacterial agent and showed excellent antibacterial property. Therefore, antibacterial epoxy composites containing A. annua waste as a natural resource with the enhanced mechanical property may have enormous potential in future biological and healthcare fields.

scholarly journals Antibacterial activity of CaO from blood cockle shells (Anadara granosa) calcination against Escherichia coli

2020 ◽  
Vol 21 (6) ◽  
Author(s):  
AMANDA FIRZA RUSDARYANTI ◽  
ULFAH AMALIA ◽  
SLAMET SUHARTO
Keyword(s):  
Escherichia Coli ◽  
Antibacterial Activity ◽  
Antibacterial Agent ◽  
Mesh Size ◽  
Inhibition Zone ◽  
Optimal Size ◽  
E Coli ◽  
Powder Concentration ◽  
Blood Cockle ◽  
Anadara Granosa

Abstract. Rusdaryanti AF, Amalia U, Suharto S. 2020. Antibacterial activity of CaO from blood cockle shells (Anadara granosa) calcination against Escherichia coli. Biodiversitas 21: 2826-2830. Calcium carbonate (CaCO3) in blood clamp shells (BCS) was able to be converted into calcium oxide (CaO) through a calcination process. Some research stated that CaO can be used in the food industries b, one of which is as an antibacterial agent. The purpose of this study was to determine the most optimal size of BCS's powder during calcination as an antibacterial agent and its effect on the activity of Escherichia coli. Data were analyzed using analysis of variance and Kruskal-Wallis test. The results showed that 200 mesh size of BCS’s powder produced the highest yield of CaO at about 98.68% compared to 120 and 230 mesh size. The best concentration of CaO powder as an antibacterial was 3.5% with a pH of 11.3 ± 0.17. CaO powder had antibacterial activity against E. coli with minimum inhibitory concentration’s value (MIC) of-0.115; a minimum bactericidal concentration’s value (MBC) of 0 CFU/mL; inhibition zone of 3.23 ± 0.2 mm. By the PCR method, DNA degradation has occurred in E. coli cells. The differences of CaO powder concentration had significant effect (P <0.05) on the inhibition zone of E. coli.

scholarly journals Antibacterial activity of leaves, flowers, and fruits extract of Etlingera elatior from Nagan Raya District, Indonesia against Escherichia coli and Staphylococcus aureus

2021 ◽  
Vol 22 (10) ◽  
Author(s):  
ERNILASARI ERNILASARI ◽  
KAMALLIANSYAH WALIL ◽  
FITMAWATI FITMAWATI ◽  
DEWI INDRIYANI ROSLIM ◽  
ZUMAIDAR ZUMAIDAR ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Antibacterial Agents ◽  
Ethanol Extract ◽  
Fruit Extract ◽  
E Coli ◽  
Gas Chromatography Mass Spectroscopy ◽  
And Staphylococcus Aureus ◽  
Etlingera Elatior

Abstract. Ernilasari, Walil K, Fitmawati, Roslim DI, Zumaidar, Saudah, Rayhannisa. 2021. Antibacterial activity of leaves, flowers, and fruits extract of Etlingera elatior from Nagan Raya District, Indonesia against Escherichia coli and Staphylococcus aureus. Biodiversitas 22: 4457-4464. Etlingera elatior is a medicinal plant that has been used by people in Indonesia, especially Acehnese people. Based on its secondary metabolites, E. elatior can be used as antibacterial agents against Gram-positive and Gram-negative. However, to determine the antibacterial activity of E. elatior, the parts of E. elatior that have been used are leaves, flowers, and fruits. This study was aimed to determine the best concentration of ethanol extract of leaves, flowers, and fruits of E. elatior as an inhibitor against Escherichia coli and Staphylococcus aureus. The extract was made by the maceration method with 70% ethanol as a solvent. Antibacterial activity test was carried out by the diffusion agar method using concentrations of 0.5%, 1%, 1.5% and 2%. The results showed that the fruit extract of E. elatior has antibacterial activity with an effective inhibitory zone at a concentration of 2% is 8.4 mm (E. coli) and 2.4 mm (S. aureus). Meanwhile, antibacterial activity the extract of leaves and flowers against E. elatior cannot determine yet. Identification of leaves, flowers and fruits extract of E. elatior using GC-MS (gas chromatography-mass spectroscopy) showed 56 compounds were detected.

In vitro evaluation of antibacterial potential of Andrographis paniculata against resistant bacterial pathogens methicillin resistant Staphylococcus aureus (MRSA) and multiple drug resistant Escherichia coli (MDR E. coli)

2016 ◽  
Vol 5 (03) ◽  
pp. 4879
Author(s):  
Srikala Ganapathy* ◽  
Karpagam S.
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Antibacterial Agents ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Ethanolic Extract ◽  
Multiple Drug ◽  
Drug Resistant ◽  
E Coli ◽  
Multiple Drug Resistant

Rise of antibiotic resistant pathogenic bacteria namely Methicillin Resistant Staphylococcus aureus (MRSA) and Multiple drug resistant Escherichia coli (MDR E. coli results in reduced efficacy of currently used antibacterial agents. Medicinal plants serve as potential targets for biologically effective antibacterial agents. The present study determined the phytochemical and invitro antibacterial activity of ethanol, chloroform, hexane and water extracts of whole plant of Andrographis paniculata against MRSA and MDR Escherichia coli. Zone of inhibition diameters were measured. Compared to all the extracts, ethanolic extract showed highest activity. The antibacterial activity was absent in hexane and water extracts. Chloroform extracts showed moderately good activity. The antibacterial compounds found in ethanolic extract were flavanoids, saponins and alkaloids.

scholarly journals Potential Application of Murraya koenigii Extract as Antibacterial Agent in Liquid Hand Soap Formulation

2021 ◽  
Vol 6 (2) ◽  
pp. 97-100
Author(s):  
Ai Yin Loh ◽  
Khomaizon A.K. Pahirulzaman
Keyword(s):  
Escherichia Coli ◽  
Antibacterial Agent ◽  
Antibacterial Agents ◽  
Diffusion Method ◽  
Disc Diffusion ◽  
Murraya Koenigii ◽  
Disc Diffusion Method ◽  
E Coli ◽  
And Staphylococcus Aureus ◽  
Paper Disc

Here we present the efficacies of Murraya koenigii leaves extract as natural antibacterial agents bythe ability to inhibit the growth of Escherichia coli and Staphylococcus aureus. The antibacterialactivities of formulated liquid hand soap with different concentrations (10, 30 and 50 mg/mL) ofM. koenigii extracts were determined by paper disc diffusion method. M. koenigii leaves extract at10 mg/mL concentration had the ability to inhibit the growth of both test microorganisms. Whereas,for liquid hand soap formulated with 10, 30 and 50 mg/mL M. koenigii extracts, inhibition zoneswere observed on S. aureus assay plates but not on E. coli. Hence, the results suggested that liquidhand soap containing M. koenigii extract had therapeutic potentials to prevent spread of skindiseases caused by S. aureus.

scholarly journals POTENSI ANTIBAKTERI BINTANG LAUT DARI PERAIRAN PANTAI KELURAHAN TONGKAINA MANADO

2019 ◽  
Vol 7 (3) ◽  
pp. 167
Author(s):  
Delpris Piter ◽  
Esther D Angkouw ◽  
Fitje Losung
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Streptococcus Agalactiae ◽  
Antibacterial Agents ◽  
Sea Water ◽  
Diffusion Method ◽  
E Coli ◽  
Linckia Laevigata ◽  
And Staphylococcus Aureus

Starfish is one of the species of the asteroidean class, and is grouped into phylum echinoderms. Echinoderms consist of approximately 6000 species and all live in sea water. Starfish is one source bioactive compounds. Active compounds from starfish have been known to have activities antioxidant, antibacterial, anti-inflammatory, antifungal and immunostimulatory, there are also blue starfish that are potential as antitumor and antibacterial agents. This study aims to obtain crude extracts from several types of starfish, and testing the antibacterial activity of crude starfish extracts against bacteria Streptococcus agalactiae, Escherichia coli and  Staphylococcus aureus. Test the antibacterial activity of crude starfish extracs Protoreaster nodosus, Achaster tipycus, dan Linckia laevigata against bacteria E. coli, S. aureus, dan S. agalactiae use the agar diffusion method by means of a well.  L. l extract  can inhibit bacteria e. coli at an extract concentration of 1000 mg/ml with a diameter of inhibitory zone 11.0 mm, whereas at a concentration of 750 mg/ml the test bacteria can still grow on the bacteria S. agalactiae and S. aureus can still grow even though the extract has be given  L. l Keywords: Potential Starfish, Antibacterial Activity, Staphylococcus aureus, Escherichia coli, and Streptococcus agalactiae Bintang laut merupakan salah satu spesies dari kelas Asteroidea, dan dikelompokkan kedalam filum Echinodermata. Filum Echinodermata  terdiri atas kurang lebih 6000 spesies dan semuanya hidup di air laut. Bintang laut  merupakan salah satu sumber penghasil senyawa bioaktif. Senyawa aktif dari bintang laut telah diketahui memiliki aktivitas antioksidan, antibakteri, antiinflamasi, antifungi dan imunostimulator, ada juga bintang laut biru yang potensial sebagai antitumor dan agen antibakteri. Penelitian ini bertujuan untuk mendapatkan ekstrak kasar dari beberapa jenis bintang laut, dan menguji aktivitas antibakteri ekstrak kasar bintang laut terhadap bakteri Streptococcus agalactiae, Escherichia coli dan  Staphylococcus aureus. Uji aktivitas antibakteri dari ekstrak kasar bintang laut Protoreaster nodosus, Achaster tipycus, dan Linckia laevigata terhadap bakteri E. coli, S. aureus, dan S. agalactiae mengggunakan metode difusi agar dengan cara sumur. Ekstrak L. l mampu menghambat bakteri E.coli pada konsentrasi ekstrak 1.000 mg/ml dengan diameter zona hambat 11.0 mm, sedangkan pada konsentrasi 750 mg/ml bakteri uji masih bisa bertumbuh pada bakteri S. agalactiae dan S. aureus masih dapat bertumbuh walaupun telah diberikan ekstrak L. l.Kata Kunci : Potensi Bintang Laut, Aktivitas Antibakteri, Streptococcus agalactiae, Escherichia coli and  Staphylococcus aureus

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