Dissertations / Theses on the topic 'Anthraquinones'
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Askari, Syed Hasan. "Synthesis and medium-dependent photochemistry of tetrahydro-1,4- Anthraquinones and Anthraquinols : structure-reactivity relationships from X-ray crystallography." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26954.
Full textScience, Faculty of
Chemistry, Department of
Graduate
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.
Full textCommittee 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
Mitchell, Anthony Stewart, and mikewood@deakin edu au. "Synthetic studies towards anthraquinones." Deakin University. School of Biological and Chemical Sciences, 1994. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20051017.151445.
Full textRabinowitz, Daniel Joshua. "Electrochemical Studies of Substituted Anthraquinones." Digital Archive @ GSU, 2008. http://digitalarchive.gsu.edu/chemistry_theses/15.
Full textSpargo, P. L. "Biomimetic synthesis of polyketide anthraquinones." Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383910.
Full textZhang, Hai Long. "Study on anthraquinones from morinda officinalis." Thesis, University of Macau, 2009. http://umaclib3.umac.mo/record=b2158154.
Full textMoore, John Neville. "Time resolved spectroscopy of water-soluble anthraquinones." Thesis, Imperial College London, 1986. http://hdl.handle.net/10044/1/38109.
Full textChigr, Mohamed. "Mise au point d'une synthèse régiosélective d'amino-anthraquinones et d'aza-anthraquinones par la réaction de Diels-Alder : activité antitumorale de quelques dérivés." Lyon 1, 1989. http://www.theses.fr/1989LYO1T034.
Full textMoroh, Jean-Luc Aboya. "Résistance bactérienne et phytomolécules antimicrobiennes issues de Morinda morindoides." Thesis, Brest, 2013. http://www.theses.fr/2013BRES0028/document.
Full textWe are witnessing over these last thirty years a growing frequency of occurrence of antibiotic-resistant bacteria. This observation is coupled with a reduction in discovery of new antimicrobials. Given the recurrence of difficult to treat infections caused by these pathogens become multidrug resistant, strengthening the antimicrobial arsenal is one of the main public health concerns. To this end, an ethnopharmacological approach has been developed. Within the framework of cooperation between the laboratory of Biochemical pharmacodynamics (University of Cocody, Côte d'Ivoire) and the laboratory of microbial biodiversity and ecology (LUBEM EA 3882, University of Brest, France), traditional self-medication habits affecting more than 70% of the population of Cote d'Ivoire were analyzed to identify new sources of antimicrobial compounds. In the first part of this study, an investigation of bacterial resistance in Côte d'Ivoire has revealed not just an increase in the frequency of occurrence of antibiotic-resistant bacteria in time, but also an evolution of resistant strains toward different types of antibiotics. In the second part, Morinda morindoides, an Ivorian medicinal plant aroused our attention for the research of antimicrobial substances. From 18 extracts from different organs of this plant the antimicrobial activity tests were performed. The acetonitrile extract of the root which exhibit the most interesting activity was used to isolate and characterize 12 antimicrobial phytomolecules. One of these compounds exhibits an original chemical structure named morindoidine. In addition to their antimicrobial activity, other biological properties of these substances have been evaluated such as their antioxidant potency, their cytotoxicity, their hemolytic activity and their molecular target. This assessment revealed a mode of action probably close to that of quinolones
Martin, Philippe. "Synthèse de quinones polycycliques et d'analogues inhibiteurs potentiels de topoisomérases et de l'interleukine 1." Poitiers, 1997. http://www.theses.fr/1997POIT2298.
Full textFonteneau, Nadia. "Conception et synthèse d'inhibiteurs potentiels de l'interleukine 1 et de la cyclooxygénase pour le traitement de l'arthrose." Poitiers, 2000. http://www.theses.fr/2000POIT2302.
Full textGiles, Yvonne. "Synthesis, DNA interactions and activation of novel cytotoxic anthraquinones." Thesis, De Montfort University, 1999. http://hdl.handle.net/2086/10751.
Full textPullen, Graeme K. "2-substituted anthraquinones as photoinitiators of free radical polymerisation." Thesis, Manchester Metropolitan University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320492.
Full textZembower, David Ewing. "The synthesis and structure-activity relationships of biologically active anthraquinones." Diss., Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/26250.
Full textBoyce, James P. "Oxidative studies of emodin anthrone." Thesis, Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/27330.
Full textSoboyejo, N. O. "Disperse dyes derived from brominated 1,4-amino- or hydroxy-substituted anthraquinones." Thesis, University of Bradford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371497.
Full textScott, Amanda Louise. "Synthesis and evaluation of free radical production of some substituted anthraquinones." Thesis, Open University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278004.
Full textGuyon, Frédérique. "Contribution à l'étude de la solidité à l'ozone de colorants anthraquinoniques acides." Mulhouse, 1998. http://www.theses.fr/1998MULH0521.
Full textAudebert, Pierre. "Synthèse et caractérisation électrochimique de polypyrroles diversement substitués par des halogènés ou fonctionnalisés par des anthraquinones greffées." Grenoble 1, 1987. http://www.theses.fr/1987GRE10063.
Full textMorin, Emmanuel Grovel Olivier. "Aloe vera (L.) Burm.f . aspects pharmacologiques et cliniques /." [S.l.] : [s.n.], 2008. http://castore.univ-nantes.fr/castore/GetOAIRef?idDoc=47416.
Full textBiasca, 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.
Full textLee, 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.
Full textVita. Includes bibliographical references (leaves 332-345).
Hobson, Debra Kay. "A natural source of anthraquinone dye intermediates : production and identification of microbial anthraquinones, an environmentally friendly method of producing dye intermediates, and their conversion to textile dyestuffs." Thesis, University of Bradford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.566824.
Full textLATEF, ABDELKADER. "Etude de couches minces organiques et inorganiques susceptibles d'etre utilisees comme support d'enregistrement dans les disques optiques." Nantes, 1991. http://www.theses.fr/1991NANT2052.
Full textBouclier, Michèle. "Etude de la délignification par les solutions alcalines de sulfite de sodium : Application aux solutions alcalines de sulfite de sodium : Rôle de l'anthraquinone." Grenoble INPG, 1987. http://www.theses.fr/1987INPG0080.
Full textConrad, Catleen. "Bernhard-von-Cotta-Preis 2014: Reinigung und Charakterisierung von zwei Peroxidasen DypA und DypB aus Rhodococcus opacus 1CP." Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2016. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-211185.
Full textAudebert, Pierre. "Synthèse et caractérisation électrochimique des polypyrroles diversement halogénés ou fonctionnalisés par des anthraquinones greffés." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb376024468.
Full textKeppler, Melanie Dawn. "Strategies for increasing the stability of triple helical DNA." Thesis, University of Southampton, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302353.
Full textUmeweni, Chiko. "Synthesis of Internally Linked Carbazole DNA Oligomers: A Potential Monitor for Charge Transfer in DNA Studies." Thesis, Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-07052005-161648/.
Full textSantos, RogÃrio Nunes dos. "Estudo quÃmico e farmacolÃgico de Senna reticulata." Universidade Federal do CearÃ, 2007. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=2336.
Full textCoordenaÃÃo de AperfeiÃoamento de NÃvel Superior
FundaÃÃo Cearense de Apoio ao Desenvolvimento Cientifico e TecnolÃgico
Este trabalho descreve a investigaÃÃo fitoquÃmica de Senna reticulata Willd., (Leguminoseae), popularmente conhecida no Cearà como mangerioba grande, que tem uso na medicina popular no tratamento de doenÃas do fÃgado, reumatismo e cÃlicas menstruais. Os gÃneros Senna, Chamaecrista e Cassia foram investigados a partir de seus compostos antraquinÃnicos relatados na literatura atà os dias atuais, no interesse de se traÃar um perfil, que contribuÃsse com distinÃÃo quÃmica dos mesmos que atà alguns anos eram confundidos devido as suas grandes semelhanÃas botÃnicas. O tratamento cromatogrÃfico dos extratos etanÃlicos das folhas, caule e cascas de Senna reticulata possibilitou o isolamento e identificaÃÃo de seis antraquinonas, um flavonÃide e uma biantrona, a identificaÃÃo da mistura de dois triterpenos e dois fitoesterÃis glicosilados e em forma livre. Outra etapa do trabalho foi dedicada ao estudo farmacolÃgico de S. reticulata, que atravÃs de ensaios analisou o potencial antioxidante, a atividade antiparasitÃria, antibacteriana e anticonvulsivante dos extratos etanÃlicos das cascas, folhas, caule e substÃncias isoladas da referida espÃcie. As determinaÃÃes estruturais foram realizadas atravÃs de anÃlises espectroscÃpicas tais como: espectroscopia na regiÃo do infravermelho, de ressonÃncia magnÃtica nuclear de hidrogÃnio-1 e carbono-13, incluindo tÃcnicas bidimensionais do tipo 1H, 13C-COSY (nJCH, n = 1, 2 e 3) com detecÃÃo inversa, espectrometria de massas e comparaÃÃo com dados da literatura.
This work decrib the phytochemical investigations of Senna reticulata Willd., (Leguminoseae), popularly known as âmangerioba grandeâ in the Brazilian Northeastern. Medicinal plant used for of liver illnesses, for rheumatism and menstrual pains. The genera Senna, Chamaecrista and Cassia were investigated from to from your compounds anthraquinones told in the literature until the current days, in the interest of tracing a profile, that contributed with chemical distinction of the same ones that to some years they were confused due your great botanical similarities. The chemical studies of ethanol extract of leaves, trunk and trunk bark of S. reticulata, making possible the isolation and identification of six anthraquinones, one flavone and one bianthrone, a mixture of two triterpenes and two a mixture of glucosilated and free β-sitosterol and stigmasterol. Another stage of the work was dedicated to the study pharmacologic of S. reticulata, that through rehearsals analyzed the antioxidant potential, the activity antiparasite, antibacterials and anticonvulsant of the extracts ethanol the leaves, trunk and trunk bark and isolated substances of the referred species. The molecular structures of compounds were elucidated by spectroscopic methods such as infrared, mass epectrometry, and nuclear magnetic resonance including special pulse sequences such as 1H, 13C-COSY (nJCH, n = 1, 2 e 3) with inverse detection and comparison with literature data.
Macedo, EdÃngelo Moura Siqueira. "Estudo quÃmico e farmacolÃgico de Senna martiana (Benth) Irw. & Barn." Universidade Federal do CearÃ, 2011. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=8381.
Full textEste trabalho apresenta o estudo da composiÃÃo quÃmica de Senna martiana (Benth) Irw. e Barn. pertencente à famÃlia da Leguminoseae. Norteou-se este estudo para o conhecimento dos constituintes quÃmicos fixos das flores e das raÃzes da planta. O levantamento bibliogrÃfico revelou a ausÃncia de estudos quÃmicos, biolÃgicos ou farmacolÃgicos realizados com esta espÃcie, motivo pelo qual a planta foi selecionada para estudo. O isolamento e purificaÃÃo dos constituintes quÃmicos foi realizado utilizando tÃcnicas como cromatografia por adsorÃÃo em coluna aberta (CC); cromatografia em camada delgada (CCD), cromatografia lÃquida de alta eficiÃncia (CLAE) e na determinaÃÃo das estruturas, tÃcnicas espectroscÃpicas tais como: absorÃÃo na regiÃo do infravermelho (IV); RessonÃncia MagnÃtica Nuclear de HidrogÃnio (RMN1H); RessonÃncia MagnÃtica Nuclear de Carbono 13 (RMN 13C) uni e bidimensionais. Na avaliaÃÃo do potencial farmacolÃgico da espÃcie, foram realizados ensaios de atividade antioxidante (mÃtodo DPPH e DHBA), atividade antitumoral (mÃtodo MTT) e atividade tripanocida de quatro compostos isolados frente a enzima GAPDH. O estudo quÃmico de Senna martiana (Benth) Irw. e Barn., permitiu o isolamento do Ãcido triacontanÃico (Ãc. melÃssico), -sitosterol e estigmasterol, e aâamirina, de trÃs antraquinonas 1,8-diidroxiladas, crisofanol, fisciona e aloe-emodina alÃm de trÃs heterosÃdeos antrÃnicos, dois deles inÃditos na literatura.
This work presents the study of the chemical composition of Senna martiana (Benth) Irw. and Barn. (Leguminosea). This survey was performed to the knowledge of the chemical constituents of the flowers and roots. The isolation and purification of chemical constituents of the plant was accomplished using cromatographic techniques and in the determination of the structures espectroscopic techniques (IR), Nuclear Magnetic Resonance of Hydrogen (RMN 1H); Nuclear Magnetic Resonance of Carbon 13 (RMN 13C). In evaluating the pharmacological potential of this species, were assayed for antioxidant activity (DPPH and DHBA), antitumor activity (MTT assay) and trypanocidal activity of four isolated compounds against the enzyme GAPDH. Chemical studies and of Senna martÃana (Benth) I&B, allowed to the isolation of triacontanoic acid, -sitosterol, stigmasterol, - amyrin, -amyrin, three 1.8-dihydroxyanthraquinones, chrysophanol, physcion and aloe-emodin, in addition to three glycosides anthrones, two of them previously unpublished in the literature.
Ma, Jiani, and 马佳妮. "Time-resolved spectroscopic studies of meta methyl activation reaction of selected benzophenone and anthraquinone derivatives." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/196012.
Full textpublished_or_final_version
Chemistry
Doctoral
Doctor of Philosophy
Chen, Daidi. "Genetic studies on pleiotropic polyoxin resistant mutants of Bipolaris maydis." Kyoto University, 2018. http://hdl.handle.net/2433/232359.
Full text0048
新制・課程博士
博士(農学)
甲第21158号
農博第2284号
新制||農||1060(附属図書館)
学位論文||H30||N5132(農学部図書室)
京都大学大学院農学研究科地域環境科学専攻
(主査)教授 田中 千尋, 教授 本田 与一, 教授 宮川 恒
学位規則第4条第1項該当
Supaka, Nuttapun. "Microbial decolorization of reactive dyes in an anaerobic : aerobic treatment system." Toulouse, INPT, 2003. http://www.theses.fr/2003INPT031G.
Full textBouammali, Boufelja. "Régiosélectivité de la réaction de Diels-Alder entre des 1-alcoxy (ou silyloxy)-2-aza-3- silyloxy-1,3-diènes et des naphtoquinones : recherche de l'activité antitumorale in vitro des 2-azaanthraquinone-3-ones." Lyon 1, 1991. http://www.theses.fr/1991LYO1T087.
Full textGüler, Gözde. "Part 1 controlling barriers to charge transfer in DNA : Part 2 : DNA-directed assembly of conducting oligomers /." Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26621.
Full textCommittee Chair: Schuster, Gary; Committee Member: Barry, Bridgette; Committee Member: Collard, David; Committee Member: Tolbert, Laren; Committee Member: Wartell, Roger. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Conrad, Catleen. "Bernhard-von-Cotta-Preis 2014: Reinigung und Charakterisierung von zwei Peroxidasen DypA und DypB aus Rhodococcus opacus 1CP." TU Bergakademie Freiberg, 2015. https://tubaf.qucosa.de/id/qucosa%3A23086.
Full textMacedo, EdÃngelo Moura Siqueira. "Estudo QuÃmico de Plantas do Nordeste com atividade antioxidante: Senna martiana Benth (I. e B)." Universidade Federal do CearÃ, 2006. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=1558.
Full textNeste trabalho apresenta-se o estudo da composiÃÃo quÃmica de Senna martiana (Benth) Irw. e Barn. pertencente à famÃlia das Leguminosas (subfamÃlia Papilonoideae, sinÃnimo Fabaceae). Norteou-se este estudo para o conhecimento dos constituintes quÃmicos volÃteis das folhas e dos constituintes fixos das inflorescÃncias e do caule. Outro objeto de interesse foi a avaliaÃÃo da atividade antioxidante dos extratos hidroalcoÃlicos dos ÃrgÃos da planta acima citados. O levantamento bibliogrÃfico revelou a ausÃncia de estudos fitoquÃmicos, biolÃgicos ou farmacolÃgicos realizados com esta espÃcie, motivo pelo qual a planta foi selecionada para estudo. O estudo fitoquÃmico da planta foi realizado utilizando tÃcnicas como cromatografia por adsorÃÃo em coluna aberta (CC); cromatografia em camada delgada (CCD), e na determinaÃÃo das estruturas tÃcnicas espectroscÃpicas tais como: absorÃÃo na regiÃo do infravermelho (IV); RessonÃncia MagnÃtica Nuclear de HidrogÃnio (RMN 1H); RessonÃncia MagnÃtica Nuclear de Carbono 13 (RMN 13C) uni e bidimensionais. A extraÃÃo dos constituintes volÃteis foi realizada por hidrodestilaÃÃo usando-se forno de microondas como fonte de aquecimento e na avaliaÃÃo da atividade antioxidante utilizou-se como tÃcnicas de anÃlise, a capacidade seqÃestradora de radicais livres (mÃtodo DPPH) e a medida do potencial antioxidante (mÃtodo DHBA). O estudo do Ãleo fixo das sementes de Senna martiana, resultou na identificaÃÃo de quatorze Ãcidos graxos, sendo majoritÃrios, o Ãcido hexadecanÃico (37%) e o Ãcido 9,12-octadecanÃico (34,1%). O estudo cromatogrÃfico do extrato etanÃlico do caule de Senna martiana possibilitou o isolamento e identificaÃÃo do Ãcido triacontanÃico (Ãc. melÃssico), -sitosterol, de trÃs antraquinonas 1,8-dihidroxiladas, crisofanol, fisciona e aloe-emodina, cujas identidades quÃmicas foram confirmadas pela anÃlise de seus espectros e comparaÃÃo com os dados da literatura. Dentre os constituintes isolados obteve-se um heterosÃdeo de uma biantrona do crisofanol inÃdito na literatura.
This work presents the study of the chemical composition of Senna martiana (Benth) Irw. and Barn. belonging to the family of Leguminosas (subfamily Papilonoideae, synonym Fabaceae). this study was orientated for the volatile chemical representatives of the leaves knowledge and of the fixed representatives of the flowers and of the stem. Another object of interest was the evaluation of the antioxidant activity of the extracts hidroalcoÃlicos of the organs of the plant above mentioned. The bibliographical rising revealed the absence of studies phytochemistry, biological or pharmacolÃgics accomplished with this species, reason for which the plant was selected for study. The study phytochemistry of the plant was accomplished using techniques as cromatographic for adsorption in open column (CC); cromatographic in thin layer (CCD), and in the determination of the structures technical such espectroscopic as: absorption in the area of the red band (IV); Nuclear Magnetic Resonance of Hydrogen (RMN 1H); Nuclear Magnetic Resonance of Carbon 13 (RMN 13C) united and bidimensionais. The volatile representatives extraction was accomplished by hidrodestilacion being used microwave oven as heating source and in the evaluation of the antioxidant activity it was used as analysis techniques, the capacity kidnapper of free radicals (method DPPH) and the measure of the antioxidant potential (method DHBA). The study of the fixed oil of the seeds of Senna martiana, resulted in the identification of fourteen graxos acids, being majority, the hexadecanoic acid (37%) and the 9,12-octadecanoic acid (34,1%). The study cromatographic of the extract ethanolic of the stem of Senna martiana made possible the isolation and identification of the triacontanoic acid (melÃssico ac.), -sitosterol, of three anthraquinones 1,8-dihidroxylad, crysophanol, phyiscion and aloe-emodin, whose chemical identities were confirmed by the analysis of your spectra and comparison with the data of the literature. Among the isolated representatives it was obtained a heterosÃdeo of a bianthrone of the unpublished crysophanol in the literature.
Carvalho, Vanessa Anastacio da Costa. "Estudos comportamentais da exposição à Senna occidentalis durante o período perinatal em ratos." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/10/10133/tde-03122013-162045/.
Full textThe Senna occidentalis (synonym Cassia occidentalis) is a plant widely used by people for medicinal purposes, although it is associated with cases of human and animal poisoning. So, besides being considered a public health problem, it is also regarded as a toxic plant of livestock interest. Its toxicity is attributed to diantrone, a quinolone, whose mechanism of action is due to the toxic uncoupling of mitochondrial oxidative phosphorylation, promoting mitochondrial damage especially in organs with higher oxygen demand. The objective of this work was to study, in rats, the possible toxic effects caused by exposure to Senna occidentalis during the gestation period. For this purpose, 36 female rats were divided into 5 groups, which were treated from the 6th to the 20th day of gestation (period of organogenesis and fetal development) with 1%, 2%, 3% and 4% of plant seeds in the diet; the control group received normal chow lab. The choice of these concentrations was based on previous studies of subacute toxicity in rats, which showed dose-dependent effect. During the period of gestation were evaluated: body weight, feed intake and water consumption of females. After birth, pups were analyzed for the number of living and dead, and for the detection of possible external malformations. We also evaluated the reproductive performance and maternal behavior of females. With regard to offspring, it was observed their physical and reflexes development, their general activity in the open field, their play behavior and their behavior in elevated plus maze and T maze. The results of this study showed a decrease in body weight of dams treated with 2%, 3% and 4% of the plant in the diet, in addition to reduced feed intake, impaired reproductive performance and signs of poisoning in dams of group 4%. Dams treated with 2% of S. occidentalis in diet showed impaired maternal behavior. Still, there was an advance for the appearance of hair and for the eruption of incisors in pups from 1%, as well as an advance to the development of negative geotaxis reflex and to the loss of palmar grasp reflex in puppies of 3% and 1% groups respectively. These results indicate that exposure to S. occidentalis during pregnancy caused maternal toxicity accompanied by impairment in maternal behavior and change in reflexology and physical development of the offspring of these rats.
Ganachaud, Chrystelle. "Laccases et colorants : vers des procédés écocompatibles." Aix-Marseille 3, 2008. http://www.theses.fr/2008AIX30033.
Full textSOPHIED project (Sustainable Bioprocesses for European Colour Industries) formed part of the FP6 and aimed to develop innovating and ecofriendly technologies to help and energize the european dye industry. Within this framework, the work described in this thesis consisted to develop new enzymatic ways for dye syntheses using laccase as catalyst. This enzyme has been studied in order to obtain anthraquinonic (natural or not), indigoid, azoic and phenoxazinonic dyes. A global view of laccase potentialities in biosynthesis has been shown
Neella, C. K. "Synthetic studies toward the total synthesis of aflastatin A, bruguierol A and preparation of some 10-diarylmethylidene anthraquinones." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2008. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2672.
Full textGasper, Susan M. "Spin selective reactivity of arylcations ; Part II: Anthraquinone oligonucleotide conjugates as probes of electron transfer in DNA." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/30533.
Full textClément, Julia. "Les caractéristiques remarquables de la flore polynésienne. Un exemple type : Morinda citrifolia L." Paris 5, 2001. http://www.theses.fr/2001PA05P012.
Full textAbou-Elkhair, Reham A. I. "Synthesis of anthraquinone derivatives and their conjugates with 2'-deoxynucleosides as new probes for electron transfer studies in DNA." unrestricted, 2008. http://etd.gsu.edu/theses/available/etd-07182008-154942/.
Full textTitle from file title page. Thomas L. Netzel, Dabney W. Dixon, committee co-chairs; David Boykin, Jerry Smith, committee members. Electronic text (250 p. : ill. (some col.)) : digital, PDF file. Description based on contents viewed Nov. 20, 2008. Includes bibliographical references.
Gouveia, Veloso Carlos Arthur. "Estudo Fitoquimico e atividades biologicas de varronia dardani e varronia leucocephala (Cordiaceae)." Electronic Thesis or Diss., La Rochelle, 2022. http://www.theses.fr/2022LAROS038.
Full textBrazil is a country that presents a vast biodiversity, where we find the Caatinga region, represented by plants of the Cordiaceae family, which are employed by local communities as an alternative for the treatment of some diseases, as is the case with the species Varronia dardani and V. leucocephala, whose infusions are used for the relief of gastric pain, menstrual colic, and arthritis. Therefore, the aim of this work was to contribute to the knowledge about these species, by studying their phytochemical and biological properties. To this end, the plant material was collected in the locations of Serra Branca-PB and Maturéia-PB and submitted to extraction processes. The crude ethanolic extract of V. dardani (CEE-VD) was submitted to the determination of total phenolics and to a quantification of rosmarinic acid, considered one of the chemotaxonomic markers of the Cordiaceae family. A screening was performed with CEE-VD to evaluate its spasmolytic activity in various organs. In addition to this biological activity, the antiproliferative activity of the extracts and fractions of all species was evaluated against human melanoma cells (A2058). Using NMR techniques, the compounds isolated from the study species were identified. The screening concerning the activity in smooth muscle, showed that CEE-VD showed a non-selectiv eactivity in the different tissues and for the different agonists tested, showing highest potency in the uterus of rats. From the ethyl acetate fraction of the CEE-VD it was possible the isolation and identification of five flavonoids, being three aglycones (isosakuranetin, naringenin, and rhamnocitrin) and two glycosylated (astragalin andisoquercitrin), besides rosmarinic acid. Regarding the cytotoxic test, the isopropanolicfraction of the extract of roots from V. dardani proved to be more active, and from this fraction the compound vardanone was isolated, the first hydro anthraquinone reported I nV. dardani species. This compound, was used for a chemo informatics study, where its set of isomers was analyzed for activity in the A2058 cell line and some interactions between amino acid residues were observed, compared to the positive controls dacarbazine and vemurafenib, drugs used in current melanoma therapy. The second most active species in the cytotoxic tests was V. leucocephala, from which it was possible to isolate a saikosaponin, already isolated previously in the species. Thus, the chemical and biological results, obtained in this work, contributed to the knowledge about the genus Varronia, furthermore, the study revealed new possibilities for research on these species involving the search for new secondary metabolites, mainly of the class of quinones
O Brasil é um país que possui uma vasta biodiversidade, onde encontramos a região da Caatinga, representada por vegetais da família Cordiaceae, os quais são empregados pelas comunidades locais como uma alternativa para o tratamento de algumas doenças,como é o caso das espécies Varronia dardani e V. leucocephala, cujas infusões são utilizadas para o alívio das dores gástricas, cólica menstrual e artrite. Sendo assim, buscou-se contribuir para o conhecimento sobre essas espécies, mediante o estudo fitoquímico e biológico das mesmas. Para isso, o material vegetal foi coletado nos municípios de Serra Branca-PB e Maturéia-PB e submetidos a processos de extração. O extrato etanólico bruto de V. dardani (EEB-VD) foi submetido à determinação defenólicos totais e à uma quantificação do ácido rosmarínico, considerado um dos marcadores quimiotaxonômicos da família Cordiaceae. Foi realizada uma triagem com o EEB-VD para avaliar a sua atividade espasmolítica em diversos órgãos. Além dessaatividade biológica, foi avaliada a atividade antiproliferativa dos extratos e frações de todas as espécies frente às células de melanoma humano (A2058). Através de técnicas de RMN foram identificadas as substâncias isoladas das espécies do estudo. A triagem relativa à atividade no músculo liso, mostrou que o EEB-VD apresentou uma atividade não seletiva nos diferentes tecidos e para os diferentes agonistas testados, apresentando maior potência no útero de ratos. Da fração acetato de etila do EEB-VD foi possível o isolamento e identificação de cinco flavonoides, sendo três agliconas (isosakuranetina, naringenina e ramnocitrina) e dois glicosilados (astragalina e isoquercitrina), além do ácido rosmarínico. Com relação ao teste citotóxico, a fração isopropanólica do extrato das raízes de V. dardani se mostrou mais ativa, e desta fração foi isolada a vardanona, primeira hidroantraquinona relatada na espécie V. dardani. O composto VD-R-I, foi utilizado para um estudo de quimioinformática, onde o conjunto de isômeros dessa substância foi analisado quanto à atividade na linhagem celular A2058 e foram observadas algumas interações entre resíduos de aminoácidos, comparando com ocontrole positivo dacarbazina e vemurafenibe, drogas utilizadas na terapia atual do melanoma. A segunda espécie mais ativa nos testes citotóxicos foi a V. leucocephala, de onde foi possível isolar uma saikosaponina, já isolada ateriormente na espécie. Logo, osresultados químicos e biológicos, obtidos nesse trabalho, contribuíram para o conhecimento sobre o gênero Varronia, ainda assim, o estudo revelou novas possibilidades de pesquisas nessas espécies envolvendo a busca de novos metabólitossecundários, principalmente da classe das quinonas
Tse, Sum Bui Jeanne Bernadette. "Interactions de l'alcool déshydrogénase de levure avec les colorants anthraquinones : modulation par des ions métalliques et un milieu à faible activité de l'eau." Compiègne, 1991. http://www.theses.fr/1991COMPD440.
Full textBorges, Warley de Souza. "Estudo de fungos endofíticos associados a plantas da família Asteraceae como fontes de metabólitos secundários e em processos de biotransformações." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/60/60138/tde-27082008-092456/.
Full textEndophytic fungi are a promising and untapped source of potential biologically active compounds that might be useful as therapeutic and agrochemical agents, or chemical biology tools. In this thesis five endophytic fungi were isolated from the leaves Tithonia diversifolia. All the strains have been cultivated in small scale and the extracts submitted to bioassays. The culture of the endophyte Phoma sorghina was scaled up, affording six known compounds and three novel anthraquinone derivatives. Three endophytes from Viguiera robusta have also been studied as sources of natural products. Colletotrichum gloeosporioides produced six known compounds, one novel aminosugar and one new diketopiperazine derivative. Diaporthe phaesolorum biosynthesized three diketopiperazine derivatives, one novel in the literature. Five known compounds and eight novel azaphilone derivatives were isolated from Chaetomium globosum. Some endophytic strains have been evaluated in biotransformation experiments of three naphthoquinones and 1-tetralone, catalyzing oxidation and reduction reactions. The endophyte Diaphorte phaseolorum catalyzed a novel methylation reaction in the biotransformation literature.
Vidal, Marie-Hélène. "Influence d'un champ magnétique sur les recombinaisons géminées : étude de systèmes, anthraquinone-donneurs d'hydrogène." Paris 11, 1987. http://www.theses.fr/1987PA112265.
Full textThis study is devoted to magnetic field effects on chemical reactions which involve a radical pair with correlated spins (radicals in a "cage"). In the first part, the radical pair theory is described: mechanisms of singlet-triplet mixing, the different interactions inside the pair and a quantum mechanical treatment of the radical pair. The details of the experimental method (nanosecond laser flash photolysis) are reported in the second part. In the third part are shown experimental results obtained on Anthraquinone (AQ) - Hydrogen donors systems:There is no magnetic field effect in homogeneous solution even at a high viscosity. The absotption spectra of the different reaction intermediates are obtained. However a magnetic field effect is put forward when AQ is introduced in SDS micelles which are hydrogen donors. The absorption spectrum of the AQH· semi-quinone radical in "cage" is shown and a mechanism is proposed for its disappearance to generate the AQH-S and AQH2 species. The addition of 9, 10 Dihydroanthracene (DH2) inside the micelle near AQ induces an increase of the magnetic field effect by creation of (AQH· DH·) pairs which diffuse slowly. Fixed radical pairs in a protein matrix were studied in reaction centers of photosynthetic bacteria: in that case, the half-effect field is shifted to low fields when compared to the precedingly described systems
Zhou, Qiuqin [Verfasser], Helge B. [Gutachter] Bode, and Martin [Gutachter] Grininger. "Identification of selected secondary metabolites from Xenorhabdus and investigation on the biosynthesis of anthraquinones from Photorhabdus / Qiuqin Zhou. Gutachter: Helge B. Bode ; Martin Grininger." Frankfurt am Main : Universitätsbibliothek Johann Christian Senckenberg, 2016. http://d-nb.info/1112601457/34.
Full textYang, Hanbae. "Zero-Valent Iron Decolorization of the Anthraquinone Dye Reactive Blue 4 and Biodegradation Assessment of its Decolorization Products." Thesis, Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6920.
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