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Bibliografias temáticas / Anthraquinone

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Literatura científica selecionada sobre o tema "Anthraquinone"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 9 de junho de 2025

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Artigos de revistas sobre o assunto "Anthraquinone"

1

Drummond, Christopher A., Maria Teresa Molina, Sandra Taliansky, Carl R. Breidenbach, and Carmen F. Fioravanti. "Effects of Quinizarin and Five Synthesized Derivatives on Fifth Larval Instar Midgut Ecdysone 20-Monooxygenase Activity of the Tobacco HornwormManduca sexta." International Journal of Zoology 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/261512.

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The plant allelochemical, quinizarin (1,4-dihydroxy-9,10-anthraquinone), and five anthraquinones that were synthesized from quinizarin, namely, 1,4-anthraquinone; 2-hydroxy-1,4-anthraquinone; 2-methoxy-1,4-anthraquinone; 9-hydroxy-1,4-anthraquinone; and 9-methoxy-1,4-anthraquinone, were assessed as to their effects on the essential, P450-dependent ecdysone 20-monooxygenase system of the insect modelManduca sexta(tobacco hornworm). This steroid hydroxylase converts the arthropod molting hormone, ecdysone, to the physiologically required 20-hydroxyecdysone form.M. sextafifth larval instar midgut homogenates were incubated with increasing concentrations (10−8to 10−3 M) of each of the six anthraquinones followed by ecdysone 20-monooxygenase assessments using a radioenzymological assay. Four of the five anthraquinones exhibitedI50’s of about4×10-6to6×10-2 M. The most effective inhibitors were 2-methoxy-1,4-anthraquinone and 1,4-anthraquinone followed by 9-hydroxy-1,4 anthraquinone and 9-methoxy-1,4-anthraquinone. At lower concentrations the latter anthraquinone stimulated E20M activity. Quinizarin was less inhibitory and 2-hydroxy-1,4-anthraquinone was essentially without effect. Significantly, these studies make evident for the first time that anthraquinones can affect insect E20M activity, and thus insect endocrine regulation and development, and that a relationship between anthraquinone structure and effectiveness is apparent. These studies represent the first demonstrations of anthraquinones affecting any steroid hydroxylase system.

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2

Malak, Lourin G., Daoud W. Bishay, Afaf M. Abdel-Baky, Ahmed M. Moharram, Stephen J. Cutler, and Samir A. Ross. "New Anthraquinone Derivatives from Geosmithia lavendula." Natural Product Communications 8, no. 2 (February 2013): 1934578X1300800. http://dx.doi.org/10.1177/1934578x1300800215.

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A phytochemical study of Geosmithia lavendula Pitt led to the isolation of three new anthraquinones: 1-acetyl-2,4,6,8-tetrahydroxy-9,10-anthraquinone (1), 2-acetyl-1,4,5,7-tetrahydroxy-9,10-anthraquinone (2), and 1-acetyl-2,4,5,6,7-pentahydroxy-9,10-anthraquinone (3), as well as another new compound named didodecyl thiodipropionate (propionic acid, 3,3-sulfinyl di-1,1′-didodecyl ester) (4), along with ten known compounds: 1-acetyl-2,4,5,7-tetrahydroxy-9,10- anthraquinone (rhodolamprometrin) (5), 1-acetyl-2,4,5,7,8-pentahydroxy-9,10-anthraquinone (6), (22E)-ergosta-6,22-diene-3β,5α,8α-triol, p-hydroxybenzyl alcohol, oleic acid, D-mannitol, palmitic acid, stearic acid, cis-vaccenic acid and 2-decenal. The structures of the isolated metabolites were elucidated based on NMR spectroscopic and mass spectrometric data. Compound 1 exhibited moderate activity against methicillin resistant Staphylococcus aureus with an IC50 value of 16.1 μg/mL.

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3

Gao, Huiyu, Jianbo Yang, Xueting Wang, Yunfei Song, Xianlong Cheng, Feng Wei, Ying Wang, Donglin Gu, Hua Sun, and Shuangcheng Ma. "Exploratory Quality Control Study for Polygonum multiflorum Thunb. Using Dinuclear Anthraquinones with Potential Hepatotoxicity." Molecules 27, no. 19 (October 10, 2022): 6760. http://dx.doi.org/10.3390/molecules27196760.

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In recent years, the hepatotoxicity of Polygoni Multiflora Radix (PMR) has attracted increased research interest. Some studies suggest that anthraquinone may be the main hepatotoxic component. Most of the relevant studies have focused on the mononuclear anthraquinone component rather than binuclear anthraquinones. The hepatotoxicity of dinuclear anthraquinone (dianthrone) was investigated in a cell-based model. Next, a method for the determination of six free and total dianthonones in PMR and PMR Praeparata (PMRP) was established using ultra-high-performance liquid chromatography triple quadrupole mass spectrometry (UPLC-QQQ-MS/MS), which was then used to analyze the collected samples. The data show that four binuclear anthraquinone compounds were hepatotoxic and may be potential toxicity indicators for the safety evaluation of PMR and PMRP. Herein, we provide a theoretical basis for the improvement of PMRP quality standards.

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4

Branco, Alexsandro, Angelo C. Pinto, Jan Schripsema, and Raimundo Braz-Filho. "Anthraquinones from the bark of Senna macranthera." Anais da Academia Brasileira de Ciências 83, no. 4 (December 2011): 1159–64. http://dx.doi.org/10.1590/s0001-37652011000400003.

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2-acetyl physcion (2-acetyl-1,8-dihydroxy-6-methoxy-3-methyl-9,10-anthraquinone, 2), a rare anthraquinone, was isolated from Senna macranthera var. nervosa (Vogel) H.S. Irwin & Barneby (Fabaceae). The chemical structure was elucidated and all ¹H and 13C NMR chemical shifts were assigned by NMR one- (¹HNMR, {¹H}-13CNMR, and APT-13CNMR) and two (COSY, NOESY, HMQC and HMBC) dimensional of this natural compound. Furthermore, the minor anthraquinones chrysophanol (3), chrysophanol-8-methyl ether (4) and physcion (5) were characterized by GC-MS analysis. The occurrence of the anthraquinones 3-5 confirms that S. macranthera is a typical representative of the genus Senna.

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5

Zhang, Rongfei, Yuanyuan Miao, Lingyun Chen, Shanyong Yi, and Ninghua Tan. "De Novo Transcriptome Analysis Reveals Putative Genes Involved in Anthraquinone Biosynthesis in Rubia yunnanensis." Genes 13, no. 3 (March 16, 2022): 521. http://dx.doi.org/10.3390/genes13030521.

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Rubia yunnanensis Diels (R. yunnanensis), a Chinese perennial plant, is well-known for its medicinal values such as rheumatism, contusion, and anemia. It is rich in bioactive anthraquinones, but the biosynthetic pathways of anthraquinones in R. yunnanensis remain unknown. To investigate genes involved in anthraquinone biosynthesis in R. yunnanensis, we generated a de novo transcriptome of R. yunnanensis using the Illumina HiSeq 2500 sequencing platform. A total of 636,198 transcripts were obtained, in which 140,078 transcripts were successfully annotated. A differential gene expression analysis identified 15 putative genes involved in anthraquinone biosynthesis. Additionally, the hairy roots of R. yunnanensis were treated with 200 µM Methyl Jasmonate (MeJA). The contents of six bioactive anthraquinones and gene expression levels of 15 putative genes were measured using ultra performance liquid chromatography coupled with mass spectrometry (UPLC-MS/MS) and real-time quantitative polymerase chain reaction (RT-qPCR), respectively. The results showed that the expressions levels for 11 of the 15 genes and the contents of two of six anthraquinones significantly increased by MeJA treatment. Pearson’s correlation analyses indicated that the expressions of 4 of the 15 putative genes were positively correlated with the contents of rubiquinone (Q3) and rubiquinone-3-O-β-d-xylopranosyl-(1→6)-β-d-glucopyranoside (Q20). This study reported the first de novo transcriptome of R. yunnanensis and shed light on the anthraquinone biosynthesis and genetic information for R. yunnanensis.

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6

Ullah, Hossain, Junhyeong Kim, Naveed Rehman, Hye-Jin Kim, Mi-Jeong Ahn, and Hye Chung. "A Simple and Sensitive Liquid Chromatography with Tandem Mass Spectrometric Method for the Simultaneous Determination of Anthraquinone Glycosides and Their Aglycones in Rat Plasma: Application to a Pharmacokinetic Study of Rumex acetosa Extract." Pharmaceutics 10, no. 3 (July 20, 2018): 100. http://dx.doi.org/10.3390/pharmaceutics10030100.

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Rumex acetosa (R. acetosa) has been used in folk remedies for gastrointestinal disorders and cutaneous diseases. Rumex species, in particular, contain abundant anthraquinones. Anthraquinone glycosides and aglycones show different bioactive effects. However, information on the pharmacokinetics of anthraquinone glycosides is limited, and methods to quantify anthraquinone glycosides in plasma are rarely available. A simple and sensitive liquid chromatography-tandem mass spectrometric bioanalytical method for the simultaneous determination of both anthraquinone glycosides and their aglycones, including emodin, emodin-8-O-β-d-glucoside, chrysophanol, chrysophanol-8-O-β-d-glucoside, physcion, and physcion-8-O-β-d-glucoside , in a low volume of rat plasma (20 µL) was established. A simple and rapid sample preparation was employed using methanol as a precipitating agent with appropriate sensitivity. Chromatographic separation was performed on HPLC by using a biphenyl column with a gradient elution using 2 mM ammonium formate (pH 6) in water and 2 mM ammonium formate (pH 6) in methanol within a run time of 13 min. The anthraquinones were detected on triple-quadrupole mass spectrometer in negative ionization mode using multiple-reaction monitoring. The method was validated in terms of selectivity, linearity, accuracy, precision, recovery, and stability. The values of the lower limit of quantitation of anthraquinones were 1–20 ng/mL. The intra-batch and inter-batch accuracies were 96.7–111.9% and the precision was within the acceptable limits. The method was applied to a pharmacokinetic study after oral administration of R. acetosa 70% ethanol extract to rats at a dose of 2 g/kg.

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7

Caballero, Ana B., Nikolas J. Hodges, and Michael J. Hannon. "Folate-Receptor-Targeted Gold Nanoparticles Bearing a DNA-Binding Anthraquinone." Inorganics 13, no. 3 (March 17, 2025): 87. https://doi.org/10.3390/inorganics13030087.

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In recent years, anthraquinones have been widening their therapeutic opportunities given their numerous health benefits. The search for adequate delivery platforms to improve their pharmacokinetics leads us to propose herein folate-capped gold nanoparticles with an anthraquinone derivative attached onto their surface. Through a straightforward, two-step procedure, we obtained stable nanoparticles that can deliver anthraquinones selectively to cells overexpressing folate receptors. The new conjugates were highly toxic against two tumour cell lines, lung carcinoma A549 and cervical carcinoma HeLa, and showed significant in vitro targeting effects for FR+ HeLa cells. We anticipate that the convenience of this synthetic procedure could enable the future development of folate-targeted conjugates bearing highly active anthraquinone-derived drugs.

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8

Yang, Yong, Qiao-Xia Wu, and Min Xue. "Bifurcated hydrogen bonding mediated planar 9,10-anthraquinone dyes: synthesis, structure and properties." RSC Advances 5, no. 37 (2015): 28932–37. http://dx.doi.org/10.1039/c5ra01682g.

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By acylation of mono- and diamino-9,10-anthraquinones with o-alkoxylbenzene carbonyl chloride or o-alkoxylnaphthalene carbonyl chloride, a series of planar 9,10-anthraquinone dyes were designed and synthesized.

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9

Manojlovic, N. T., S. Solujic, S. Sukdolak, and Lj Krstic. "Isolation and antimicrobial activity of anthraquinones from some species of the lichen genus Xanthoria." Journal of the Serbian Chemical Society 65, no. 8 (2000): 555–60. http://dx.doi.org/10.2298/jsc0008555m.

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The isolation of six anthraquinones, erythroglaucin, physcion, xanthorin, emodin, fallacinal and teloschistin, from three species of the lichen genus Xanthoria (X. fallax, X. eleg?ns and A. policarpa) is reported. Physcion is the dominant anthraquinone in all species. The anthraquinones showed broad-spectrum antifungal activity and selective activity against some phytopathogenic bacterial species.

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10

Ammar Rushdan, Nur Afiqah Nadhiah, Nurunajah Ab Ghani, and Nurulfazlina Edayah Rasol. "Review on Anthraquinones Isolated from Rubiaceae Family." Journal of Science and Mathematics Letters 11, Special (November 9, 2023): 163–74. http://dx.doi.org/10.37134/jsml.vol11.sp.18.2023.

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A current economic trend is to highlight natural resources and many plant species are rich sources of anthraquinones. Anthraquinones are a diverse group of natural compounds extensively studied in various articles. Commonly used for dyes with 30% of it contributed to textile industry. Anthraquinone plays an important chromophore in cancer chemotherapy. They are widely distributed in Rubiaceae family and exhibit various biological activities. Malaysian Rubiaceae, especially plants from Morinda, Rennellia, Psychotria, and Prismatomeris genera, have been known to be rich in anthraquinone content, especially in the roots. The current review aims to provide a comprehensive update on the isolation of anthraquinones from Rubiaceae family in Malaysia. It also discussed the taxonomy, chemistry, and pharmacology studies of the genus. Through the years, 45 anthraquinones have been reported from various species of Rubiaceae demonstrating promising pharmacological activities. The information presented in this review can provide a scientific foundation for future research on the possible therapeutic applications of the species. Enhancing the links between plant biological effects and traditional uses with their chemical characterization.

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Teses / dissertações sobre o assunto "Anthraquinone"

1

Burton, S. J. "Biomimetic anthraquinone dyes." Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383771.

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2

Samp, James Christian. "A comprehensive mechanism for anthraquinone mass transfer in alkaline pulping." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24767.

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Thesis (Ph.D.)--Chemical Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Dr. Jeff Empie; Committee Member: Dr. Bill Koros; Committee Member: Dr. Jim Frederick; Committee Member: Dr. Tom McDonough; Committee Member: Dr. Xin-Sheng Chai

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3

Wang, Biao. "A catalyzed chemimechanical-anthraquinone pulping." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0024/NQ50278.pdf.

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4

Wang, Biao 1963. "A catalyzed chemimechanical-anthraquinone pulping /." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=35431.

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A catalyzed chemimechanical-anthraquinone pulping of black spruce wood was investigated in this study. The effect of liquor pH on anthraquinone performance, AQ and mass transfer limitations on chemimechanical pulp properties and the effects of AQ, liquor pH and sulphite concentration on pulping kinetic were studied.<br>It was observed that AQ was not an effective redox catalyst when added to the sulphite liquor at pH 4, but it was very effective at pH 7 and higher. When chemical treatment of chemimechanical pulping was done with the presence of AQ, the sulphur content of pulp was reduced due to preferential reaction of AQ with wood components. AQ, as a pulping agent, is much effective in increasing the delignification rate and at the same time protecting the degradation of carbohydrates.<br>Pulps produced from wood wafers with cooking liquor at pH 7 containing 0.1% of AQ on oven dry wood, exhibited the following improved properties when compared with those prepared without addition of AQ: increased pulping rate, higher pulp yield and carbohydrates yield at the same level of residual lignin in pulp, and in addition, the strength properties such as breaking length and burst strength improved by 15% even with a minimum AQ charge (0.05% and 0.01%).<br>With regular wood chips, the penetration of sulphite seems to be superior to that of AQ. It was observed that AQ was not uniformly distributed in the impregnated wood chips even when the compression ratio was increased from 3.5:1 to 5:1. The penetration of AQ into wood chips remains to be a major factor affecting the pulping rate and pulp properties (strength and brightness) in chemimechanical-AQ pulping.<br>The rate of delignification in the initial phase of both sulphite and sulphite-AQ cooking at pH 7 shows the second order reaction in the remaining lignin. The order with respect to sulphite concentration for sulphite and sulphite-AQ cooking were estimated to be 0.24 and 0.31, respectively. The activation energies of delignification of the initial phase in sulphite and sulphite-AQ pulping were 90.2 and 97.5 kJ/mole which was valid up to 30% lignin removal within the temperature range of 160°C and 175°C. AQ as a pulping additive introduced to the sulphite liquor increased the rate of delignification 1.5 times in the initial phase of delignification during the sulphite cooking process.<br>At initial pH of sulphite liquor ranging from 7 to 10, the rate of delignification in the initial phase during sulphite and sulphite-AQ cooking appears to be a second order reaction in the remaining lignin. The reaction orders with respect to sulphite concentration increases when the initial pH is below 8 and decreases when the initial pH is above 8 for both sulphite and sulphite-AQ cooking. The raw of delignificafion is dependent on the initial pH of cooking liquor and the addition of AQ.

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5

Burazin, Mark Alan. "A dynamic model of kraft-anthraquinone pulping." Diss., Georgia Institute of Technology, 1986. http://hdl.handle.net/1853/5743.

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6

Morin, Francois. "Mass transfer limitations in sulfite pulping with anthraquinone." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=28495.

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The objective of this project was to study systematically the NSSC-AQ pulping process in order to improve the penetration of anthraquinone and sodium sulfite in wood and to simulate the mass transfer and delignification processes.<br>In a heterogeneous reaction system, such as wood pulping, two main factors control the overall reaction rate: liquor penetration and chemical diffusion. As a first step, some wood characteristics affecting liquor impregnation were evaluated: 1) fiber hydraulic radius, 2) air, steam and water content, 3) wood elasticity and compressibility. Secondly, impregnation and pulping experiments were performed while varying the pre-steaming, compression and soaking time. Finally, experimental profiles were compared to computer simulated results. The two most commonly used species by the pulp industry were chosen for this study: 1) black spruce sapwood and heartwood as well as 2) trembloid poplar sapwood.<br>Impregnation of sulfite-AHQ liquor in wood blocks was simulated by a three-dimensional "Control Volume Finite Difference Method (CVFDM)". To de-couple the pressure and velocity fields, typical to convection-diffusion problems, a mass balance around individual control volume was performed using Poiseuille's capillary flow equation. The pulping kinetic differential equations were included into the CVFDM model to simulate a three-dimensional delignification pattern in the wood.<br>In general, the progression of the anthraquinone impregnation was slow and non-uniform in comparison to sulfite which penetrated rapidly and uniformly during pulping. Furthermore, delignification uniformity was related to the initial chemical profiles observed after impregnation. This confirms the importance of chemical pre-treatment for high yield pulping in order to minimize uneven delignification for chips thicker than 3mm. Results showed that, in most cases, computer simulated profiles were similar to experimental anthraquinone and sulfite impregnation patterns.

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7

Gibson, Victoria. "Design, synthesis and evaluation of anthraquinone-oligodeoxynucleotide conjugates." Thesis, University of Sunderland, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242343.

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8

Alaparthi, Madhubabu. "Molecular Recognition Involving Anthraquinone Derivatives and Molecular Clips." Thesis, University of South Dakota, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10285748.

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<p> In the past, we have demonstrated that 1,8-anthraquinone-18-crown-5 (1) and its heterocyclic derivatives act as luminescent hosts for a variety of cations of environmental and clinical concern. We report here a series of heteroatom-substituted macrocycles containing an anthraquinone moiety as a fluorescent signaling unit and a cyclic polyheteroether chain as the receptor. Sulfur, selenium, and tellurium derivatives of 1,8-anthraquinone-18-crown-5 (<b>1</b>) were synthesized by reacting sodium sulfide (Na<sub>2</sub>S), sodium selenide (Na<sub>2</sub>Se) and sodium telluride (Na<sub>2</sub>Te) with 1,8-bis(2-bromoethylethyleneoxy)anthracene - 9,10-dione in a 1:1 ratio (<b>2,3,</b> and <b>6</b>). These sensors bind metal ions in a 1:1 ratio (<b>7</b> and <b>8</b>), and the optical properties of the new complexes were examined and the sulfur and selenium analogues show that selectivity for Pb(II) is markedly improved as compared to the oxygen analogue <b>1</b> which was competitive for Ca(II) ion. </p><p> Selective reduction of <b>1</b> yields secondary alcohols where either one or both of the anthraquinone carbonyl groups has been reduced (<b> 15</b> and <b>9</b>). A new mechanism for the fluorescence detection of metal cations in solution is introduced involving a unique keto-enol tautomerization. Reduction of <b>1</b> yields the doubly reduced secondary alcohol, <b> 9. 9</b> acts as a chemodosimeter for Al(III) ion producing a strong blue emission due to the formation of the anthracene fluorophore, <b>10,</b> via dehydration of the internal secondary alcohol in DMSO/aqueous solution. The enol form is not the most thermodynamically stable form under these conditions however, and slowly converts to the keto form <b>11.</b> </p><p> Currently we are focusing on cucurbituril derivatives, also described as molecular clips due to their folded geometry used as molecular recognition hosts. We first investigated the synthesis and characterization of aromatic methoxy/catechol terminated cucurbituril units that act as hosts for small solvent molecules, such as CH<sub>2</sub>Cl<sub>2</sub>, CH<sub>3</sub>CN, DMF, and MeOH, through dual pi…H-C T-shaped interactions. We have calculated the single-point interaction energies of these non-covalent interactions and compared them to the dihedral angle formed from the molecular clip. We have also synthesized a molecular clip that contains terminal chelating phenanthroline ligands. This tetradentate ligand shows 2:3 metal:ligand binding with Fe(II) and 1:2 metal:ligand binding with Co(II) and Ni(II) cations.</p><p>

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9

Lee, Young H. "Reductive biotransformation and decolorization of reactive anthraquinone dyes." Diss., Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04062004-164708/unrestricted/lee%5Fyoung%5Fh%5F200312%5Fphd.pdf.

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Thesis (Ph. D.)--School of Electrical and Computer Engineering, Georgia Institute of Technology, 2004. Directed by Spyros G. Pavlostathis.<br>Vita. Includes bibliographical references (leaves 332-345).

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10

Biasca, Karyn L. "A study of the kinetics of delignification during the early stage of alkaline sulfite anthraquinone pulping." Diss., Available online, Georgia Institute of Technology, 1989:, 1989. http://etd.gatech.edu/theses/available/ipstetd-10/biasca%5Fkl.pdf.

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Livros sobre o assunto "Anthraquinone"

1

Ijaz, Taeeba. Anthraquinone-peptide conjugates as inhibitors of DNA transcription factor binding. Leicester: De Montfort University, 1998.

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2

C, Goyal Gopal, and Technical Association of the Pulp and Paper Industry., eds. Anthraquinone pulping: A Tappi press anthology of published papers, 1977-1996. Atlanta, GA: Tappi press, 1997.

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3

Mäkelä, Reijo. ESR, ENDOR and triple resonance study on substituted 9,10-anthraquinone radicals in solution. Jyväskylä, Finland: Jyväskylän yliopisto, 1990.

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4

Rhodes, Christopher Mark. Part 1: the synthesis and study of anthracine and anthraquinone-containing polymers by means of a precursor route: Part 2: a kinetic study of model reactions of an epoxy resin cure. Manchester: University of Manchester, 1996.

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5

Giles, Yvonne. Synthesis, DNA interactions and activation of novel cytotoxic anthraquinones. Leicester: De Montfort University, 1999.

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6

Anthraquinone Pulping. Tappi Pr, 1997.

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7

Anthracene and Anthraquinone. Creative Media Partners, LLC, 2023.

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8

Hoffman, William Samuel. Reactions of Anthraquinone Sulphonic Acids with Mercaptans. Creative Media Partners, LLC, 2018.

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9

Reactions of Anthraquinone Sulphonic Acids with Mercaptans. Creative Media Partners, LLC, 2023.

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10

Reactions of Anthraquinone Sulphonic Acids with Mercaptans. Creative Media Partners, LLC, 2023.

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Capítulos de livros sobre o assunto "Anthraquinone"

1

Gordon, Paul Francis, and Peter Gregory. "Anthraquinone Dyes." In Organic Chemistry in Colour, 163–99. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-82959-8_4.

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2

Gooch, Jan W. "Anthraquinone Dyes." In Encyclopedic Dictionary of Polymers, 42. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_683.

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3

Gooch, Jan W. "Dihydroxy Anthraquinone Lake." In Encyclopedic Dictionary of Polymers, 221. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_3670.

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4

Billen, Günter, Ulrich Karl, Thomas Scholl, Klaus Dieter Stroech, and W. Steglich. "Stereochemical Studies on Pre-Anthraquinones and Dimeric Anthraquinone Pigments." In Natural Products Chemistry III, 305–15. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-74017-6_17.

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Suzuki, H., and T. Matsumoto. "Anthraquinone: Production by Plant Cell Culture." In Biotechnology in Agriculture and Forestry, 237–50. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-73026-9_12.

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Shahid-ul-Islam and F. Mohammad. "Anthraquinone-Based Natural Colourants from Insects." In Textile Science and Clothing Technology, 81–97. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2185-5_3.

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Motronyuk, T., I. Barsukov, V. Barsukov, V. Drozdik, and O. Radchenko. "Metal-Free Graphite/HBF4/Anthraquinone Rechargeable Batteries." In New Promising Electrochemical Systems for Rechargeable Batteries, 451–65. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1643-2_34.

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Sparapano, L., P. Lerario, and G. Anelli. "Production of Anthraquinone Derivatives by Phoma Tracheiphila." In Phytotoxins and Plant Pathogenesis, 395–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-73178-5_38.

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9

Ge, Ping, and Richard A. Russell. "Synthesis of Anthraquinone Analogues of Linked Anthracycline." In ACS Symposium Series, 132–41. Washington, DC: American Chemical Society, 1994. http://dx.doi.org/10.1021/bk-1995-0574.ch008.

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Hadibarata, Tony, Khaloud Mohammed Alarjani, and Amal M. Al-Mohaimeed. "Biotransformation of Anthraquinone Dye by Microbial Enzymes." In Sustainable Textiles: Production, Processing, Manufacturing & Chemistry, 87–106. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-0526-1_4.

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Trabalhos de conferências sobre o assunto "Anthraquinone"

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Harless, Michael L., Mingdong Yuan, and Jennifer K. Cowan. "9,10-Anthraquinone Applications to Control Biogenic Production of Hydrogen Sulfide in the near Wellbore Formation in Gas Storage Fields." In CORROSION 2000, 1–12. NACE International, 2000. https://doi.org/10.5006/c2000-00121.

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Abstract Biogenic production of hydrogen sulfide in gas storage reservoirs is increasing as storage fields age(1). Attempts to mitigate this phenomenon have been primarily limited to treatment of the injected gas with organic biocides or periodic downhole treatments with organic biocides(2). These treatment attempts have resulted in only limited success at decreasing the rate of reservoir souring(1). 9,10-anthraquinone (anthraquinone) has been shown to inhibit biogenic production of sulfides in oilfield water systems for extended periods of time(3). Anthraquinone functions as a sulfide inhibitor by forming insoluble, sub-micron sized particles that become incorporated into the biofilm. Subsequent to incorporation into the biofilm, the anthraquinone is transported into the cells of sulfate reducing bacteria (SRB) where it blocks production of ATP and ultimately reduction of sulfate to sulfide(4). Studies to determine applicability of this chemistry for inhibition of sulfide production in gas storage fields are presented in this paper. Sulfide inhibition studies were conducted in formation material to determine if anthraquinone was capable of inhibiting biogenic sulfide production in a high surface area environment. Positive results from the sulfide inhibition studies required that sandpack flood and core flood experiments be conducted to verify that anthraquinone could be safely squeezed into a gas storage field formation. Anthraquinone is soluble in high pH water in anaerobic conditions. However, in the presence of oxygen or neutral pH, anthraquinone will form colloidal particles(5). The sandpack and core flood experiments demonstrate that anthraquinone may be applied by squeeze techniques into the formation material with acceptable loss of injectivity. Appropriate squeeze designs for field trials in gas storage fields were developed using data from this study.

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Burger, Edward D., Anne B. Crews, and Harold W. Ikerd. "Inhibition of Sulfate-Reducing Bacteria by Anthraquinone in a Laboratory Biofilm Column under Dynamic Conditions." In CORROSION 2001, 1–17. NACE International, 2001. https://doi.org/10.5006/c2001-01274.

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Abstract A relatively simple biofilm column to study biogenic sulfide inhibition under dynamic (flow) conditions is described. Results of studies aimed at evaluating anthraquinone, a biostatic inhibitor of sulfate-reducing bacteria, in simulated oilfield water treatment conditions are presented. The study results have indicated that the biofilm columns are an excellent screening tool for assessing the effects of interactions between oilfield water treatment chemicals on biofilm activity. Anthraquinone was found to be a very effective inhibitor of sulfide production. Co-treatments or sequential treatments with specific oilfield chemicals were found to synergistically increase efficacy, while others were detrimental. Contact of anthraquinone-treated biofilms by crude oil was found to limit sulfide inhibition, although short-term efficacy was unaffected. Anthraquinone was found to biodegrade in the biofilm, apparently leading to the decrease in effectiveness with time.

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Burger, Edward D. "Synergism of Anthraquinone with an Oilfield Biocide to Inhibit Sulfide Generation from Sulfate-Reducing Bacteria." In CORROSION 2004, 1–11. NACE International, 2004. https://doi.org/10.5006/c2004-04750.

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Abstract It has been shown that anthraquinone inhibits the ability for sulfate-reducing bacteria (SRB) to respire using sulfate as an electron acceptor. This property has been used to develop specific treatments for oilfield water systems to reduce the generation of H2S and the formation of iron sulfides. In this paper, results from laboratory and field studies showing the synergistic effect of treating oilfield produced waters with both anthraquinone and acrolein are discussed. Results from these studies indicate that the use of anthraquinone can extend the duration of effectiveness of this biocide and improve the quality of the water for injection.

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Wensley, Angela, and Darvin Mattila. "Effect of Anthraquinone on Corrosion in a Continuous Digester." In CORROSION 2002, 1–7. NACE International, 2002. https://doi.org/10.5006/c2002-02130.

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Abstract Rapid corrosion thinning occurred in the wash zone of a hardwood continuous digester between the 1999 and 2000 annual inspections. The major process change during that time was the introduction of anthraquinone (AQ) pulping. AQ pulping was temporarily halted until a laboratory investigation was completed to determine the corrosivity of digester liquors sampled during anthraquinone (AQ) pulping and during pulping without AQ addition. Potentiostatic polarization at 315°F (157°C) demonstrated that active corrosion rates of A516-Grade 70 and A285-Grade C carbon steels in the liquor sample taken during AQ pulping were significantly lower than in the liquor sampled during non-AQ pulping. It was concluded that the rapid corrosion thinning was not directly the result of AQ addition but may have been due to secondary factors such as increased temperature or decreased hydroxide residual, as well as high temperature acid cleaning.

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Xie, Jeffrey, Chris Foy, Robert Worthingham, and Mark Piazza. "Environmental Effects on the Susceptibility and Crack Growth of near Neutral PH Stress Corrosion Cracking." In CORROSION 2010, 1–11. NACE International, 2010. https://doi.org/10.5006/c2010-10297.

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Abstract The environmental effects on the susceptibility and crack growth of near-neutral pH stress corrosion cracking (SCC) were characterized using mechanical testing, hydrogen permeation and potential drop measurements. The investigated environmental parameters were dissolved CO2, HCO3−, pH, sulfate and chloride, sulfide and organics (9,10-anthraquinone-2,6-disulfonate (AQDS), Laurentian humic acid (LHA) and Laurentian fulvic acid (LFA)). Sufficient hydrogen concentration was critical for the susceptibility of near-neutral pH SCC. Hydrogen concentration was directly proportional to the concentration of sulfide (HS−), and the %RA-ratio decreased linearly with the logarithm of sulfide concentration. Organic compounds, like AQDS, LHA and LFA, had an inhibitive effect on the crack growth rates, and also reduced the hydrogen concentration. Higher CO2 concentrations led to a decrease in solution pH. However the addition of HCO3−, may result in the formation of a ferrous carbonate film that could protect the underlying steel and slow the corrosion process.

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Penkala, Joseph E., Nilce Shioya, Eduardo Costa Bastos, Cynthia de Azevedo Andrade, Monica de Oliveira Penna, Husdonil A. Baldotto, Tauseef Salma, and Edward D. Burger. "A Cost Effective Treatment to Mitigate Biogenic H2S on a FPSO." In CORROSION 2004, 1–19. NACE International, 2004. https://doi.org/10.5006/c2004-04751.

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Abstract Sulfate-reducing bacteria (SRB) pose a threat to oilfield produced water facilities due to microbiologically influenced corrosion and biogenic sulfides. Produced water systems are susceptible to the establishment of oil-coated SRB-enriched biofilms that are typically inaccessible to conventional biocide regimes. To address this, a strategy has been designed using a conventional biocide in combination with anthraquinone (AQ), a non-toxic compound that specifically inhibits the SRB sulfate-reduction pathway.[1,2] AQ is applied as submicron colloidal particles that penetrate oil-coated biofilms and are taken up by SRB cells. The combination treatment has enabled successful control of biogenic sulfides in water injection systems due to a synergistic action on sessile SRB.[3,4] In the present study, AQ and a tetrakishydroxymethyl phosphonium sulfate blend (THPSBLEND) were used to treat slop water tanks on a Floating, Production, Storage and Offloading Unit (FPSO) operated by Petrobras in the Campos Basin, offshore from Brazil. High levels of hydrogen sulfide (≥ 30 ppm in the water) were being generated by aggressive SRB present in the tanks, resulting in safety, economic, and discharge issues. Conventional treatment with glutaraldehyde was ineffective. The AQ-THPSBLEND co-treatment immediately reduced and maintained hydrogen sulfide levels at &lt;1 ppm. During the course of treatment, the amount of AQ applied was increased and THPSBLEND decreased, which resulted in a stable, cost-effective scenario for bacterial control that enabled safe discharge of the water into the marine environment due to low ecotoxicity. This finding is significant in that it provides an economically favorable protocol to mitigate biogenic sulfides in oilfield water tanks and vessels and minimizes personnel and environmental risk during treatment and discharge.

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Burger, E. D., and J. M. Odom. "Mechanisms of Anthraquinone Inhibition of Sulfate-Reducing Bacteria." In SPE International Symposium on Oilfield Chemistry. Society of Petroleum Engineers, 1999. http://dx.doi.org/10.2118/50764-ms.

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Yagyu, Eiji, Tetsuya Nishimura, and Motomu Yoshimura. "Persistent Hole Burning and Holography in Anthraquinone Derivatives." In Spectral Hole-Burning and Related Spectroscopies: Science and Applications. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/shbs.1994.wd57.

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We have reported persistent spectral hole burning (PHB) in anthraquinone derivatives. 1-3) Hole burning spectroscopy desires high resolution to detect narrow and shallow holes. Laser induced grating (Holography) technique is very effective for the investigation of a shallow hole, because it enables to detect a small signal without a large background. 4-6) In addition, we can achieve many holographic applications: 3D image storage and reconstruction, holographic memory, holographic computing, etc. However, we should note that hole signal represents a diffraction efficiency in holographic detection, not the absorption spectrum. Consequently, material characteristics, hole width, depth, area, Debye-Waller factor, etc., are not directly obtainable using holographic detection.

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Alwi, Ratna Surya, Kazuhiro Tamura, Tatsuro Tanaka, and Keisuke Shimizu. "Solubility correlation of anthraquinone derivatives in supercritical carbon dioxide." In INTERNATIONAL SEMINAR ON FUNDAMENTAL AND APPLICATION OF CHEMICAL ENGINEERING 2016 (ISFAChE 2016): Proceedings of the 3rd International Seminar on Fundamental and Application of Chemical Engineering 2016. Author(s), 2017. http://dx.doi.org/10.1063/1.4982328.

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Mahajan, Aman, and R. K. Bedi. "Study on hot-wall-epitaxy-grown 9,10-anthraquinone films." In Smart Materials, Structures, and Systems, edited by S. Mohan, B. Dattaguru, and S. Gopalakrishnan. SPIE, 2003. http://dx.doi.org/10.1117/12.514848.

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Relatórios de organizações sobre o assunto "Anthraquinone"

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พรภคกุล, สุรชัย. สารเมแทบอไลท์ต้านจุลชีพและต้านมะเร็งจากราเอ็นโดไฟท์ : รายงานการวิจัย. จุฬาลงกรณ์มหาวิทยาลัย, 2011. https://doi.org/10.58837/chula.res.2011.49.

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การวิจัยภายใต้โครงการนี้ ได้ทำการศึกษาสารเมแทบอไลท์ของราเอ็นโดไฟท์ Emericella variecolor ในอาหารเพาะเลี้ยง Malt Czapek-Dox broth (MCzB) และ Czapek-Dox broth (CzB) และสารเมแทบอไลท์ ของเห็ดเผาะ Astraeus odoratus ส่วนสกัดเอธิล แอซิเทตของส่วนน้ำเลี้ยงและเส้นใยราเอ็นโดไฟท์ E. variecolor ที่เพาะเลี้ยงในอาหาร เหลว Malt Czapek-Dox นำไปแยกด้วยซิลิกาเจลคอลัมน์โครมาโทกราฟี โดยใช้ตัวทำละลาย เฮกเซน, เฮ กเซน-เอธิล แอซิเทต, เอธิล แอซิเทต, เอธิล แอซิเทต-เมทานอล และเมทานอล ตามลำดับ นำส่วนแยกมาทำ ให้บริสุทธิ์ สารที่แยกได้จากส่วนสกัดเอธิล แอซิเทตจากเส้นใย ได้แก่ stellatic acid (1), ergosterol (2), สาร กลุ่ม xanthones 2 ชนิด [14-methoxy tajixanthone 25-acetate (3) และ tajixanthone hydrate (8)], สาร กลุ่ม anthraquinone 2 ชนิด [1-hydroxy-6,8-dimethoxy-3-methylanthraquinone (4) และ 4,6-dihydroxy- 5,7-dimethoxy-2-methylanthraquinone (5)] และสารชนิดใหม่ 2 ชนิด [สารประกอบ (6) และ (7)] ส่วนการ แยกสารจากส่วนสกัดเอธิล แอซิเทตจากน้ำเลี้ยงได้ 4,6-dihydroxy-5,7-dimethoxy-2-methyl anthraquinone (5) และ dermoglaucin (9) และ และสารใหม่หนึ่งชนิด [สารประกอบ (10)] ขณะที่ การแยกสารเมแทบอ ไลท์ของราเอ็นโดไฟท์ E. variecolor ที่เพาะเลี้ยงในอาหารเหลว Czapek-Dox ได้ stellatic acid (1) และ ergosterol (2) จากสารสกัดเส้นใยเท่านั้น การแยกสารเมแทบอไลท์จากเห็ดเผาะที่เก็บตัวอย่างมาจากจังหวัดน่านสามารถแยกสารได้ สารประกอบไตรเทอร์พีน 4 ชนิด และสารประกอบสเตียรอยด์ที่มีรายงานแล้ว 3 ชนิด (Ergosterol, ergosterol peroxide และ 5,8-epidioxy-(3β,5a,8a,24R)-ergosta-6-en-3-ol).

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Su, Ning, Jerald S. Bradshaw, Xian X. Zhang, Paul B. Savage, and Krzystof E. Krakowiak. Syntheses of Diaza-18-Crown-6 Ligands Containing Two Units Each of 4-Hydroxyazobenzene, Benzimidazole, Uracil, Anthraquinone, or Ferrocene Groups. Fort Belvoir, VA: Defense Technical Information Center, April 1999. http://dx.doi.org/10.21236/ada361715.

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Integration of the Mini-Sulfide Sulfite Anthraquinone (MSS-AQ) Pulping Process and Black Liquor Gasification in a Pulp Mill. Office of Scientific and Technical Information (OSTI), January 2010. http://dx.doi.org/10.2172/970980.

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