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Дисертації з теми "Phytochemicals and Antioxidant"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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1

Deakin, Sherine Jane. "Antioxidant effects of phytochemicals in conditions of oxidative stress : impact on endothelial cell survival and function." Thesis, University of Aberdeen, 2010. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=165549.

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Two dietary polyphenols, delphinidin and resveratrol, were selected for this study; delphinidin, an anthocyanin flavonoid, was found to elicit cardioprotective properties from a pilot study and resveratrol, a stilbene flavonoid, one of the most studied of the polyphenols and was chosen as a worthy comparator. <i>In vitro</i> studies using cultured endothelial cells exposed to a variety of reactive oxygen species (ROS) were used to determine if delphinidin and resveratrol could protect these cells from oxidative damage. It was found that physiological concentrations of delphinidin protected the

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2

Nunez, Rueda Flor de Maria. "Guava (Psidium guajava L.) fruit phytochemicals, antioxidant properties and overall quality as influenced by postharvest treatments." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0011873.

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3

Hadley, Craig. "Tomato and soy phytochemicals: In vivo biodistribution, bioavailability, antioxidant/oxidative environment regulation, and prostate biomarker modulation." The Ohio State University, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=osu1086182301.

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4

Hadley, Craig W. "Tomato and soy phytochemicals in vivo biodistribution, bioavailability, antioxidant/oxidative environment regulation, and prostate biomarker modulation /." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1086182301.

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Thesis (Ph. D.)--Ohio State University, 2004.<br>Title from first page of PDF file. Document formatted into pages; contains xiii, 154 p. : ill. Advisor: Steven J. Schwartz, Program in Nutrition (OSUN). Includes bibliographical references (p. 134-154).

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5

ALFARANO, MICHELA. "Evaluation of the putative healthy effects of food phytochemicals: effect on blood antioxidant status, human cells and enzyme activities." Doctoral thesis, Università di Foggia, 2018. http://hdl.handle.net/11369/369483.

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Negli ultimi decenni, gli antiossidanti alimentari hanno ricevuto crescente attenzione, soprattutto in ambito biologico, medico e nutrizionale, in relazione alla loro capacità di contrastare lo stress ossidativo implicato nella patogenesi di diverse patologie cronico-degenerative. Numerosi sono i metodi attualmente disponibili in letteratura per valutare la capacità antiossidante (CA) in vitro degli alimenti. In tutti i casi si tratta di metodi semplici, rapidi e poco costosi che consentono di misurare la CA sia su composti puri che su matrici complesse, come alimenti e campioni biologici. Tut

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6

Almada, Carine Nunes de. "Atividade antioxidante do extrato etanÃlico de folhas de azeitona da terra (Syzygium Cumini L.) e seu efeito contra estresse induzido por paracetamol." Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=10229.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>Syzygium cumini is a plant originated from India and adapted in Brazil, popularly known as black plum, jambolan and jamun. In this study, the antioxidant and protective activities of ethanolic leaves extract of Syzygium cumini (EE) were evaluated on paracetamol-induced liver damage in mice. The total antioxidant activity was determined by ABTS and DPPH methods and the content of vitamin C, extractable polyphenols, anthocyanins, yellows flavonoids and carotenoids were evaluated by different methods. The toxicity of EE was evaluat

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7

MOREIRA, Aldenise Chagas Curvêlo Gonçalves. "Caracterização de frutos de genótipos de cajá-umbuzeiras : teor de fitoquímicos bioativos e potencial antioxidante." Universidade Federal Rural de Pernambuco, 2011. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5068.

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Submitted by (edna.saturno@ufrpe.br) on 2016-07-26T11:34:06Z No. of bitstreams: 1 Aldenise Chagas Curvello G Moreira.pdf: 1832678 bytes, checksum: 08dcbab15cec31bc62f7c570ddae3ae1 (MD5)<br>Made available in DSpace on 2016-07-26T11:34:06Z (GMT). No. of bitstreams: 1 Aldenise Chagas Curvello G Moreira.pdf: 1832678 bytes, checksum: 08dcbab15cec31bc62f7c570ddae3ae1 (MD5) Previous issue date: 2011-02-24<br>The aim this work was to characterize "cajá-umbu" fruits coming from the germplasm's collection IPA (Instituto Agronômico de Pernambuco). Fruits of the 4 genotypes (G 2.2, G 2.3, G 3.1, G 3.2

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8

Fujioka, Kazutoshi. "Formation/inhibition and toxicity of reactive carbonyl compounds from oxidized dietary oils : antioxidant properties of phytochemicals measured by headspace solid-phase microextraction/gas chromatography /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2005. http://uclibs.org/PID/11984.

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9

Sirdaarta, Joseph P. "Phytochemical Study and Anticancer Potential of High Antioxidant Australian Native Plants." Thesis, Griffith University, 2016. http://hdl.handle.net/10072/365567.

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High antioxidant capacities have been linked with a reduction in the incidence of chronic diseases including cardiovascular disease, diabetes, obesity, neurodegeneration, inflammation and cancer. Furthermore, phenolic antioxidants may not only have protective effects against these diseases, but may also have therapeutic potential in reversing them by modulation of the cellular redox state. Thus, plants with high antioxidant capacities have potential in the development of new chemotherapeutic treatments to prevent and treat some cancers. Several native Australian plant species including Termin

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10

Zhou, Kequan. "Phytochemical profiles and antioxidant properties of wheat." College Park, Md. : University of Maryland, 2005. http://hdl.handle.net/1903/2729.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2005.<br>Thesis research directed by: Food Science. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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11

Kim, Youngmok. "Factors influencing antioxidant phytochemical stability of teas." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-3172.

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12

Costa, Gislene Parreiras [UNESP]. "Estudo da atividade antioxidante de folhas e polpa de Annona crassiflora Mart. para utilizar como fitocosmético." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/150513.

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Submitted by GISLENE PARREIRAS COSTA null (giscosta1@hotmail.com) on 2017-05-02T20:25:27Z No. of bitstreams: 1 DISSERTAÇÃO FINALissima IMPRIMIR 02 maio 2017.pdf: 709377 bytes, checksum: 2269ffdcc1be5a2294b7c367a1c7e2cb (MD5)<br>Approved for entry into archive by Luiz Galeffi (luizgaleffi@gmail.com) on 2017-05-03T20:14:39Z (GMT) No. of bitstreams: 1 costa_gp_me_assis.pdf: 709377 bytes, checksum: 2269ffdcc1be5a2294b7c367a1c7e2cb (MD5)<br>Made available in DSpace on 2017-05-03T20:14:39Z (GMT). No. of bitstreams: 1 costa_gp_me_assis.pdf: 709377 bytes, checksum: 2269ffdcc1be5a2294b7c367a1c7e2cb

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13

Alsadeg, Aborus Naji Elhadi. "Fitohemijske i funkcionalne karakteristike praškastih formi klijanaca pšenice, ovsa i ječma." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2017. http://www.cris.uns.ac.rs/record.jsf?recordId=104607&source=NDLTD&language=en.

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U radu su ispitani fitohemijski profil, antioksida-tivna i in vitro biolo&scaron;ka aktivnost ekstrakata klijanaca &scaron;est sorti žitarica: p&scaron;enica Spelt, Simonida, (WSSPE, WSSIM) ječam, hibrid “NS565” (Hordeum vulgare L. ssp distichum.) (BSNS) i ne-hibridni “Golozrni” (Hordeum vul-gare var nudum.) (BSG) i ovas Golozrni, Jadar (OSG, OSJ). U cilju poređenja &scaron;est istraživanih vrsta klijanaca ispitivanja su obuhvatila određivanje TPC, TFC, TChl, Chla, Chlb i TCX vrednosti i testiranje njihove biolo&scaron;ke aktivnosti (antioksidativnog kapaciteta, redukci

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14

Juan-Badaturuge, Malindra. "Antioxidant activity and phytochemical evaluations of selected medicinal plants." Thesis, University of Greenwich, 2010. http://gala.gre.ac.uk/8098/.

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The methanolic crude extract of aerial parts of the plant Scrophularia nodosa was shown to have potent DPPH radical scavenging activity (IC50 = 48.75 ± 7.00 μg/ml). Activity-guided fractionation resulted in the isolation of three principal antioxidant compounds; acteoside, angoroside C and angoroside A. Acteoside (yield = 1.21%, IC50 = 15.2 μM) appeared to be the most abundant and most antioxidant-active. The potent antioxidant activity is in support of the traditional use of the plant for wound healing and anti-inflammatory conditions. The methanolic extract of aerial parts of Tanacetum vulga

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15

Rodriguez, Montes de Oca Gustavo Alejandro. "Evaluation of dietary phytochemicals on sex differentiation and growth in Nile tilapia (Oreochromis niloticus)." Columbus, Ohio : Ohio State University, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1133358425.

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16

Secor, Jordan Douglas. "Phytochemical Antioxidants Induce Membrane Lipid Signaling in Vascular Endothelial Cells." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1338391553.

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17

Mukhia, Sumira. "Studies of phytochemical and antioxidant properties of selected liverworts of Darjeeling Himalaya." Thesis, University of North Bengal, 2018. http://ir.nbu.ac.in/handle/123456789/2831.

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18

Merlin, Nathalie. "Isolamento bioguiado de compostos com atividade antioxidante das folhas de Moringa oleífera." Universidade Tecnológica Federal do Paraná, 2017. http://repositorio.utfpr.edu.br/jspui/handle/1/2284.

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CAPES; Fundação Araucária<br>A espécie Moringa oleifera (Moringaceae) é uma planta que possui ampla aplicação industrial, alto valor nutricional e que, além disso, também exibe diversas atividades biológicas. Utilizadas na medicina popular, as folhas de M. oleifera já demonstraram possuir grande variedade de moléculas bioativas, inclusive compostos fenólicos, os quais são, possivelmente, os responsáveis pelo potencial antioxidante desta parte da planta. Apesar do crescente interesse sobre a espécie e, especificamente, sobre o seu potencial fitoquímico, são escassos os trabalhos que relatam o i

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19

Vizzotto, Marcia. "Inhibition of invasive breast cancer cell growth by selected peach and plum phenolic antioxidants." Texas A&M University, 2005. http://hdl.handle.net/1969.1/3284.

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Fruits and vegetables are known to play an important role in human health due to the range of phytochemicals they contain. Twenty-one peach genotypes and 45 plum genotypes with different flesh and skin color were analyzed for their antioxidant content and antioxidant activity. Anthocyanin content, phenolic content and antioxidant activity were higher in red-flesh than in light-colored flesh peaches. Carotenoid content was higher in yellow-flesh peaches. Among the peaches, the antioxidant activity was well correlated with phenolic content. The anthocyanin content among the plums increased with

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20

Mangoba, Paula Maria Alexandre. "Prospecção de características fitoquímicas, antibacterianas e físico-químicas de portulaca oleracea l. (beldroega)." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/115207.

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A Portulaca oleracea L. (beldroega) possui propriedades antioxidantes e antimicrobianas, podendo ser utilizada como planta medicinal e alimento funcional. O estudo objetivou determinar: a composição centesimal e mineral da beldroega in natura; a intensidade da atividade de inibição bacteriana (IINIB) e a intensidade da atividade de inativação bacteriana (IINAB) das concentrações de 50, 25, 12.5 e 6.25 % de extratos alcoólicos da beldroega sobre diferentes inóculos bacterianos de interesse em alimentos (Staphylococcus aureus, Escherichia coli, Salmonella Enteritidis e Enterococcus faecalis), pe

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21

Jaishee, Nishika. "Phytochemical analysis of some ferns with reference to their antioxidant, hypoglycemic and antimicrobial activities." Thesis, University of North Bengal, 2016. http://ir.nbu.ac.in/hdl.handle.net/123456789/2747.

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22

Fender, Lanier. "Phytochemical, antioxidant, and storage stability of thermally processed guava (Psidium guajava) and guava juice blends." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0013332.

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23

Herrera-Calderon, Oscar, Jorge Arroyo-Acevedo, Juan Rojas-Armas, et al. "Phytochemical Screening, Total Phenolic Content, Antioxidant and Cytotoxic Activity of Chromolaena laevigata on Human Tumor Cell Lines." SCIENCEDOMAIN international, 2017. http://hdl.handle.net/10757/622501.

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Aims: Cancer is the first cause of death in the Peruvian population; searching alternative treatments of medicinal plants constitute a promissory field to find new anticancer drugs. The main objective in this study was to evaluate the phytochemical screening, total phenolic content, antioxidant and cytotoxic activity of ethanol extract of Chromolaena laevigata (C. laevigata) on human tumor cell lines. Study Design: The fresh leaves of C. laevigata were soaked with ethanol followed by phytochemical screening using standard methods. Place and Duration of Study: Laboratory of Applied Chemistry, F

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24

Altemimi, Ammar Badran. "ULTRASONIC APPLICATIONS- PHYTOCHEMICAL ANALYSES OF SOME MEDICINAL NATURAL PRODUCTS IN FOOD PLANTS." OpenSIUC, 2016. https://opensiuc.lib.siu.edu/dissertations/1149.

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There are concerns about using synthetic phenolic antioxidants such as butylated hydroxytoluene (BHT) and butylated hydroxyanisole (BHA) as food additives because negative effects to human health have been reported. thus, a replacement of these synthetics by antioxidant extractions from various foods has been proposed. By the generation of more than eight thousand different phenolics, fruits and vegetables are the prime sources of natural antioxidants. The consumption of fruits and vegetables has been strongly linked with several health benefits, a result of their medicinal properties and high

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25

Ito, Vivian Cristina. "EFEITOS DA RADIAÇÃO GAMA DURANTE O ARMAZENAMENTO DA FARINHA DE BAGAÇO DE MAÇÃ." UNIVERSIDADE ESTADUAL DE PONTA GROSSA, 2015. http://tede2.uepg.br/jspui/handle/prefix/639.

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Made available in DSpace on 2017-07-21T18:53:02Z (GMT). No. of bitstreams: 1 VIVIAN ITO.pdf: 2690679 bytes, checksum: 986e658b539e22ec97b7923bb505ed9a (MD5) Previous issue date: 2015-02-13<br>The apple is a very popular fruit because of its aroma, flavor and attractive look, its consumption is related to several benefits to human health. With industrialization, a residue of juice extraction is generated, the apple pomace, with similar characteristics of nutrients and bioactive compounds that fruit. This apple pomace after stabilization becomes a by-product with excellent biotechnological app

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26

Mustafa, Din Wardah. "A phytochemical and pharmacological study of Acalypha wilkesiana var. macafeana hort. (Euphorbiaceae juss.) : antioxidant and antibacterial analyses." Thesis, University of Nottingham, 2014. http://eprints.nottingham.ac.uk/14069/.

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A tropical shrub from Euphorbiaceae (Juss.) family, namely Acalypha wilkesiana var. macafeana hort. was investigated for its antioxidant and antibacterial properties. The antioxidant properties were assayed by Ferric Reducing Antioxidant Power (FRAP) assay, 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay and β-carotene bleaching assay. Assessment of its antibacterial properties was conducted with pour plate disc diffusion assay and dilution methods. The plant was collected, dried, grinded and soaked continuously in four different solvent starting from non-polar to polar solvent:

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27

Silva, Analú Barbosa da. "Caracterização antibacteriana, química e fitoquímica de flores de Hibiscus rosa-sinensis L. (mimo-de-vênus) e Hibiscus syriacus L. (hibisco-da-síria) como fonte de alimento." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/101498.

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O Hibiscus rosa-sinensis L. e o Hibiscus syriacus L., da família Malvaceae são utilizados na área ornamental, mas nos últimos anos vem ganhando espaço na área alimentícia como flores comestíveis. Alguns estudos demonstram o potencial antibacteriano destas variedades frente a diversos microrganismos e sobre sua composição nutricional e fitoquímica há poucas pesquisas. Este trabalho teve por objetivo analisar a intensidade de atividade de inibição (IINIB) e a inativação bacteriana (IINAB) in vitro dos dois extratos alcoólicos das flores dos hibiscos e a relação com os polifenóis e antocianinas,

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28

Sganzeria, Marla. "Caracterização físico-química e capacidade antioxidante do butiá." Universidade Federal de Pelotas, 2010. http://repositorio.ufpel.edu.br/handle/ri/1333.

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Made available in DSpace on 2014-08-20T13:42:09Z (GMT). No. of bitstreams: 1 Dissertacao_Marla_Sganzeria.pdf: 1113012 bytes, checksum: b547757cc00a9c95681ca740a58161e0 (MD5) Previous issue date: 2010-02-04<br>The species belonging to the Palmae (Aracaceae) family are distinguished by the natural and economic resource that they represent to human populations as its ecological role in the vegetation. In Rio Grande do Sul there are six genera of native palm trees, among them occurs the palm Butia genus, mainly the species of B. capitata and B. eriospatha, which produce fruits that are con

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29

Maia, Catarina Isabel Ganhoteiro. "Processamento de agrião para recuperação de compostos bioactivos com aplicação na indústria dos nutracêuticos." Master's thesis, ISA/UL, 2014. http://hdl.handle.net/10400.5/8283.

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Mestrado em Engenharia Alimentar - Instituto Superior de Agronomia<br>The consumption of vegetables is widely recognized to be beneficial to human health and this is mainly attributed to their high content in functional constituents. The aim of this work was to develop a green extractin process of watercress for the recovery of bioactive compounds with application in the nutraceutical industry. Initially the matrix was characterized with respect to its content of polyphenols, terpenes and carotenoids. A Design of Experiments (DOE) was used to plan the extractions using two solutions water: co

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30

Colusso, Ariane Schneider. "PRODUÇÃO E CARACTERIZAÇÃO DE NANOCÁPSULAS CONTENDO TRANS-ANETOL E AVALIAÇÃO IN VITRO DA CAPACIDADE ANTIOXIDANTE." Centro Universitário Franciscano, 2016. http://www.tede.universidadefranciscana.edu.br:8080/handle/UFN-BDTD/545.

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Submitted by MARCIA ROVADOSCHI (marciar@unifra.br) on 2018-08-17T11:20:26Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissetacao_ArianeSchneiderColusso.pdf: 1387386 bytes, checksum: ca5b21fd4ec8eb3de7d6668c214ecd67 (MD5)<br>Made available in DSpace on 2018-08-17T11:20:26Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissetacao_ArianeSchneiderColusso.pdf: 1387386 bytes, checksum: ca5b21fd4ec8eb3de7d6668c214ecd67 (MD5) Previous issue date: 2016-01-08<br>The trans-anethole (TA) is an aromatic

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31

Bumbliauskinė, Jankauskaitė Lina. "Study of Perilla L. species and varieties cultivation, phytochemical composition and biological effect." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110309_111240-41438.

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Perilla L. are significant for multi-pharmacological effect. The aim of this work is to study Perilla L. growth and develop¬ment tendencies, productivity; composition of biologically active compounds and their variations during the vegetation period, and the biological effect of the extracts; to select perspective plants for cultivation in Lithuania and for production of medicinal preparations. The objectives of the Study: To investigate and determine growth dynamics of Perilla L. species and varieties during the vegetation period and to assess the influence of climate conditions on the vegeta

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32

Pereira, Danielle Fontana. "MORFOANATOMIA E HISTOQUÍMICA COMPARATIVA ENTRE ALTERNANTHERA BRASILIANA (L.) KUNTZE E ALTERNANTHERA DENTATA (MOENCH) STUCHLIK; ESTUDO FITOQUÍMICO E BIOLÓGICO DE ALTERNANTHERA BRASILIANA." Universidade Federal de Santa Maria, 2007. http://repositorio.ufsm.br/handle/1/5953.

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The family Amaranthaceae consist of approximately 65 genus and 1000 species of herbaceous plants. The genus Alternanthera is in this family and can be found spread worldwide. The Alternanthera brasiliana (L.) Kuntze and Alternanthera dentata (Moench) Stuchlik species are known as penicillin and can be found in Brazil, commonly in Santa Catarina and Rio Grande do Sul. The popular usage of the A. brasiliana specie is for the treatment of tonsillitis, cold and the influenza and the A. dentata is used to treat infections, fever along with headache and is also used as antiseptical for the treatme

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33

Oh, Myungmin. "Plant adaptation and enhancement of phytochemicals in lettuce in response to environmental stresses." Diss., Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/673.

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Coutinho, Gizelli Santos Lourenço. "BIOPROSPECÇÃO DAS FOLHAS, CASCA E LÁTEX DA ESPÉCIE VEGETAL Himatanthus drasticus (JANAÚBA)." Universidade Federal do Maranhão, 2013. http://tedebc.ufma.br:8080/jspui/handle/tede/1037.

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Made available in DSpace on 2016-08-19T17:47:05Z (GMT). No. of bitstreams: 1 DISERTACAO_GIZELI SANTOS LOURENCO COUTINHO.pdf: 2757714 bytes, checksum: bc543fd210466bf4c5a1fd09ff430d3c (MD5) Previous issue date: 2013-06-10<br>Himatanthus drasticus (janaúba) is a tree with dense foliage at the ends of branches, oblique and ovals leaves, subcoriaceous, shiny, glabrous, dark green, with apex rounded to obtuse, short petioles and rough bark that exudes a white latex widely used in popular medicine in treatment of tumors, worms, gastritis, arthritis, infertility and also cancer. Therefore, this s

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Daniëls, Christiaan Winston. "Nitrogen and carbon costs of growth and antioxidant production during acclimation to environmental stress in two species of gethyllis." Thesis, University of the Western Cape, 2012. http://hdl.handle.net/11394/4371.

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Philosophiae Doctor - PhD<br>Gethyllis multifolia L. Bolus and G. villosa Thunb. are winter-growing, summerblooming,deciduous and bulbous geophytes that grow naturally in the semi-arid succulent Karoo biome of South Africa. Both species grow under full sun conditions and have four distinctive growth phases: a winter (cold and wet) growing phase, leaf senescence phase towards spring, flowering phase during the hot and dry summer months, and fruit and leaf formation phase in autumn. The medicinal uses of this genus (including G. multifolia “Kukumakranka” and G.villosa “hairy kukumakranka”) range

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Pacheco, Palencia Lisbeth A. "Phytochemical, antioxidant and color stability of Açai (Euterpe oleracea M.) as affected by processing and storage in juice and model systems." [Gainesville, Fla.] : University of Florida, 2006. http://purl.fcla.edu/fcla/etd/UFE0014366.

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Esteves, Ana Teresa Martins. "Plantas endémicas portuguesas com utilização medicinal." Master's thesis, [s.n.], 2015. http://hdl.handle.net/10284/5307.

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Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Ciências Farmacêuticas<br>Os primeiros medicamentos que surgiram tinham como base os conhecimentos etnobotânicos das populações, ou seja, as populações conheciam as plantas locais e as suas aplicações para o tratamento e prevenção das patologias. Com o presente trabalho procura-se descrever os princípios ativos presentes nas plantas e descrever a aplicação medicinal de plantas endémicas portuguesas. No desenvolvimento do trabalho verificou-se que em

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Silva, Claudia Tatiana Araujo da Cruz. "Análise fitoquímica, antioxidante e fitotóxica dos extratos de folhas de salvia officinalis l. sobre lycopersicon esculentum." Universidade Estadual do Oeste do Parana, 2016. http://tede.unioeste.br:8080/tede/handle/tede/261.

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Made available in DSpace on 2017-05-12T14:47:35Z (GMT). No. of bitstreams: 1 Claudia Tatiana_ silva.pdf: 2022908 bytes, checksum: a04e53fead9716247a3d90eaa7333faf (MD5) Previous issue date: 2016-01-18<br>Allelochemicalare substances present in plants, released into the environment that influence on the community, since the allelopathic potential of one plant can inhibit the development of others. Medicinal plants that have essential oils in their composition have typically been promising in weed control. Thus, this study evaluated the phytotoxic potential of dried leaves, extracts and essent

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Takaidza, Samkeliso. "Phytochemical analysis and biological activities of crude extracts from selected Tulbaghia species." Thesis, Vaal University of Technology, 2018. http://hdl.handle.net/10352/434.

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PhD (Department of Biotechnology, Faculty of Applied and Computer Sciences), Vaal Universtiy of Technology<br>The genus Tulbaghia has been used in traditional medicine to treat various ailments such as fever, earache, tuberculosis and esophageal cancer. However, there is limited scientific evidence to support its use. Therefore the objectives of this study were to perform phytochemical analysis, investigate the antioxidant, antimicrobial, anticancer, immunomodulatory activities and toxicity of crude acetone and water extracts from selected Tulbaghia species. Standard methods were used for pr

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Omena, Cristhiane Maria Bazílio de. "Atividade antioxidante e anticolinesterase dos extratos etanólicos dos frutos: Siriguela Spondia purpurea Linnaeus; Umbu Spondia tuberosa Arruda; Genipapo Genipa americana Linnaeus e Mangaba Hancornia speciosa Gomes." Universidade Federal de Alagoas, 2012. http://www.repositorio.ufal.br/handle/riufal/2031.

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Ethanol extracts of “jenipapo” (Genipa americana Linnaeus), “umbu" (Spondia tuberosa Arruda), “siriguela” (Spondia purpurea Linnaeus) and “mangaba” (Hancornia speciosa Gomes) were prepared from separate pulp, seeds and peel; except mangaba which are used pulp and peel. The investigation of antioxidant capacity of the ethanol extracts were carried out by the methods of determining the content of ascorbic acid and total phenolics; scavenging 2, 2 -diphenyl-1-picrilhydrazyl and 2, 2’- azinobis (3-ethylbenzothiazoline-6-sulfonic acid) radical, antioxidant capacity of reduction of iron and copper

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Sá, Giulian César da Silva. "Caracterização nutricional, antinutricional, bioquímica e atividades biológicas de sementes de Sesbania Virgata (cav.) pers." Universidade Federal da Paraíba, 2017. http://tede.biblioteca.ufpb.br:8080/handle/tede/9817.

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Submitted by Leonardo Cavalcante (leo.ocavalcante@gmail.com) on 2018-04-23T23:19:25Z No. of bitstreams: 1 Arquivototal.pdf: 1967881 bytes, checksum: 7ca8d86d26370955fcc5937ad9344abc (MD5)<br>Made available in DSpace on 2018-04-23T23:19:25Z (GMT). No. of bitstreams: 1 Arquivototal.pdf: 1967881 bytes, checksum: 7ca8d86d26370955fcc5937ad9344abc (MD5) Previous issue date: 2017-05-19<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>Sesbania virgata is a shrub belonging to a family Leguminosae whose fruit presents seeds with high protein content. Considering the potential

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Talag, Agela Hussain Mohammed. "Phytochemical investigation and biological activities of Sanicula europaea and Teucrium davaeanum : isolation and identification of some constituents of Sanicula europaea and Teucrium davaeanum and evaluation of the antioxidant activity of ethanolic extracts of both plants and cytotoxic activity of some isolated compounds." Thesis, University of Bradford, 2016. http://hdl.handle.net/10454/14482.

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The aim of this research was to investigate the phytochemistry of two species Sanicula europaea and Teucrium davaeanum which are traditionally used in treatment of wounds. Four compounds were isolated from the 80% methanolic extract of S. europaea; bis-(2-ethylhexyl) phthalate (1), palmitic acid (2), rosmarinic acid (3), saniculoside N (4). Compounds 1 and 2 were isolated for the first time from this species. The structure elucidation of the isolated compounds was on the basis of 1D, 2D NMR spectroscopy and mass spectrometry measurements. Two compounds were isolated from the crude glycosides e

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Arroyo-Acevedo, Jorge Luis, Oscar Herrera-Calderon, Johnny Aldo Tinco-Jayo, et al. "Ameliorative Effect of the Oral Administration of Chuquiraga spinosa in a Murine Model of Breast Cancer Induced with 7,12-Dimethylbenz[a]anthracene (DMBA)." EManuscript Technologies, 2020. http://hdl.handle.net/10757/655585.

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Objective: To determine the ameliorative effect of the ethanolic extract of Chuquiraga spinosa (ChS) on 7,12-Dimethylbenz[a]anthracene (DMBA)-induced breast cancer in rats. Methods: 36 female Holztman rats were divided into 6 groups. I) The negative control group received physiological saline (PS). II) ChS-200 group received 200 mg/kg of ChS. III) DMBA group was induced with DMBA (20 mg/Kg) dissolved in PS and administrated orally for 15 weeks. IV) DMBA + ChS-50 group, V) DMBA + ChS-250 group, and VI) DMBA + ChS-500 group, which received the extract orally for 15 weeks after DMBA induction. Al

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Joseph-Angélique, Josianny. "Contribution a la connaissance chimique et valorisation biologique de nectandra membranacea (swartz) grisebach de Guadeloupe." Thesis, Antilles, 2015. http://www.theses.fr/2015ANTI0006/document.

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Nectandra membranacea (Lauraceae) est une plante très commune aux Petites Antilles. Aucune utilisation traditionnelle de cette plante n’est connue mais le genre Nectandra, qui représente le deuxième plus important de la famille des Lauraceae avec 114 espèces reconnues, présente des propriétés analgésiques, anti-inflammatoires et énergétiques (Le Quesne et al 1980). Nectandra a également démontré une activité antitumorale (Silva-Filho, 2004). Les nombreuses propriétés du genre et le peu de connaissance chimique sur cette espèce nous ont incités à réaliser une étude phytochimique et à évaluer le

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BIONDI, FRANCESCA. "Enhancement of Brassica Species for innovative products to zero waste." Doctoral thesis, Università Politecnica delle Marche, 2019. http://hdl.handle.net/11566/263500.

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I tre anni di ricerca hanno avuto come tematica principale l’investigazione della qualità nutrizionale, sensoriale e organolettica di verdure appartenenti alla famiglia delle Brassicaceae, commercializzate in prima gamma evoluta con marchio “Zeroscarti®”, fornite dall’azienda agricola Valli di Marca, che ha co-finanziato il dottorato Eureka. Lo studio ha riguardato tutti i fattori che influenzano e determinano la qualità del prodotto sia in pre che in post raccolta; la conoscenza acquisita permette di migliorare e incrementare la qualità del prodotto fresco ma anche di trovare nuove strategie

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Lin, Chi-Yang, and 林啟洋. "Antioxidant activities and phytochemicals of leaf extracts from indigenous Rhododendron in Taiwan." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/82968234811713756159.

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碩士<br>國立中興大學<br>森林學系所<br>101<br>Rhododendron is not only one of the most famous ornamental plants in the world, but also it is a traditionally medicinal plant. However the potential bioactivities of indigenous Rhododendron in Taiwan have not yet been studied completely to date. In this study, a number of in vitro assays, including DPPH radical scavenging assay, superoxide radical scavenging assay, ferrous-ion chelating activity and reducing power assay, were performed to evaluate the antioxidant activities of methanolic extracts from the leaves of 10 indigenous Rhododendron species in Taiwan.

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Ngo, Thanh. "Maximisation of extraction of phytochemicals from Salacia chinensis L. and encapsulation of its enriched extract." Thesis, 2020. http://hdl.handle.net/1959.13/1411330.

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Research Doctorate - Doctor of Philosophy (PhD)<br>Salacia chinensis L., a common species in genus Salacia, is distributed in many Asian countries, such as China, Vietnam, India and Sri Lanka. For thousands of years, S. chinensis has been used for the prevention and treatment of various illnesses including arthritis, inflammation, diabetes, obesity and liver disorders. Studies have shown that S. chinensis has relatively high content of bioactive compounds, such as total phenolics and total flavonoids as well as strong antioxidant properties. Numerous individual compounds, isolated and identifi

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HUNG, YI-WEN, and 洪乙文. "Studies on Health Promotion from Aromatic Plants-Phytochemicals、antioxidant activity analysis and wellnessproducts from the flower of Camellia japonica." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/59830122002775705534.

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碩士<br>佛光大學<br>未來與樂活產業學系<br>105<br>Stress can cause illness, anxiety, lack of sleep, depression, tension, improper diet, excessive drinking and so on, which may increase the formation of free radicals in the human body. Free radical is an extremely active and unstable substance existing in the human body. It will react with the cells, so that cells appear abnormal situations or even death, resulting in a variety of chronic diseases and aging. This study mainly collected 16 common herbs and flowers from the campus of Fo Guang University, namely begonia semperflorens, bidens pilosa, Camellia, hib

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Afonso, Nuno Filipe Costa. "Pastas enriched in Fucus vesiculosus: nutritional evaluation and biological properties." Master's thesis, 2019. http://hdl.handle.net/10773/30034.

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Despite their worldwide abundancy, algae are still considered an underexploited resource with a lot of interest in several industries, namely food and pharmaceuticals. Several reports comparing the diets of different countries, associate seaweed consumption with the oriental welfare and vitality contrarily to western societies. Within all three classes of edible seaweeds, those belonging to Phaeophyta have been receiving a lot of attention particularly due to their abundance in complex polysaccharides, phlorotannins, fucoxanthin and iodine. This work reports the nutritional composition

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"Hormetic dietary phytochemicals from Western Canadian plants: Identification, characterization and mechanistic insights." Thesis, 2013. http://hdl.handle.net/10388/ETD-2013-06-1066.

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Activation of mammalian stress responsive pathways by plant secondary metabolites may contribute to the protection against certain chronic diseases afforded by fruit and vegetable consumption. This work focuses on the identification of plant compounds that activate the stress-responsive enzyme quinone reductase (QR) by stabilizing the transcription factor NF-E2 related factor-2 (Nrf2). Screening methanolic extracts of plants from Western Canada for QR induction in a mouse hepatoma cell line (Hepa-1c1c7) led to the identification of twenty-one extracts capable of doubling the activity of QR. Bi

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