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Dissertations / Theses on the topic 'Extracts antimicrobial activity'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Moshref, Mahmood. "Investigation of plant extracts for antimicrobial activity." Thesis, University of Sheffield, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388711.

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2

Nambatya, Mary Grace. "Antimicrobial activity of the bark extracts of Entada abyssinica (Omwoolola)." Thesis, Loughborough University, 1993. https://dspace.lboro.ac.uk/2134/31966.

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Various extracts of Entada abyssinica stem/root bark have been shown to have antimicrobial activity using organisms : Staphylococcus aureus, S. epidermidis, Escherichia coli, Pseudomonas aeruginosa, Bacillus megaterium, Candida albicans, Aspergillus niger and Tricophyton mentagrophytes on solid media. Chromatographic analysis of the bark extracts of different trees (according to age), showed them to contain in common the components responsible for the observed antimicrobial activity with differences observed in minor bands not of antimicrobial importance.

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3

Silva, Cristiane Karina Malvezzi da. "Atividade antimicrobiana de produtos naturais para obtenção de novos biofármacos: estudo dos extratos brutos e suas associações." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/97/97131/tde-26092012-162426/.

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Estudos da atividade biológica de produtos naturais visando suas aplicações no controle de microrganismos são estratégicos e de fundamental importância econômica e social. Considerando o grande potencial da biodiversidade brasileira, o objetivo deste trabalho foi avaliar a atividade antimicrobiana do xilitol e dos extratos brutos obtidos das folhas das plantas Eugenia uniflora, Psidum guajava, Punica granatum e Syzygium cumini, bem como da associação entre os extratos e entre o xilitol e os extratos. Os extratos foram obtidos de folhas frescas maceradas em uma solução de etanol 95%, filtrada a

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4

Vermaak, I., AM Viljoen, JH Hamman, and Vuuren SF Van. "Effect of simulated gastrointestinal conditions and epithelial transport on extracts of green tea and sage." Elsevier, 2009. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001730.

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A bstract Few in vitro screening studies on the biological activities of plant extracts that are intended for oral administration consider the effect of the gastrointestinal system. This study investigated this aspect on extracts of Camellia sinensis (green tea) and Salvia officinalis (sage) using antimicrobial activity as amodel for demonstration. Both the crude extracts and their products after exposure to simulated gastric fluid (SGF) as well as simulated intestinal fluid (SIF) were screened for antimicrobial activity. The chromatographic profiles of the crude plant extracts and their SGF a

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5

Vermaak, I., AM Viljoen, JH Hamman, and Vuuren SF Van. "The effect of simulated gastrointestinal conditions on the antimicrobial activity and chemical composition of indigenous South African plant extracts." Elsevier, 2009. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001732.

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Abstract Few in vitro screening assays for biological activities of plant extracts consider the potential effect of the gastrointestinal system on orally consumed plant extracts. Crude water and methanol extracts of Tarchonanthus camphoratus (wild camphor) and Agathosma betulina (‘buchu’) were prepared and exposed to simulated gastric fluid and simulated intestinal fluid during dissolution studies to address this aspect. The crude extracts and resulting simulated gastric fluid and simulated intestinal fluid products were screened for antimicrobial activity against Staphylococcus aureus (ATCC 2

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6

Patcharapinyopong, Thanasan. "Antimicrobial and Anti-Platelet Activity in Botanical Extracts of Plants Collected in Northern Thailand." Thesis, University of North Texas, 2019. https://digital.library.unt.edu/ark:/67531/metadc1505273/.

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The purpose of my research work was to assess a variety of Northern Thailand plants tissue extracts for antibacterial and anti-platelet aggregation activity. The Minimum Inhibitory Concentration assay method was used to assess antimicrobial activity of plant extracts, while the Zebrafish Platelet Aggregation Assay and the in vitro Whole Human Blood Impedance Aggregation Assay were used to study anti-platelet activity. Forty one plant extracts harvested from the tissues of 26 plants collected from Northern Thailand were assessed. Thirty-four plant extracts were found to have antibacterial activ

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7

Yoshimura, Go Theerathavaj Srithavaj. "Antimicrobial activity of Thai medical herbal extracts against mutans streptococci and candida albicans in vitro /." Abstract, 2007. http://mulinet3.li.mahidol.ac.th/thesis/2550/cd400/4838053.pdf.

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8

Samdumu, Faga B. "Characterization of antimicrobial compounds from Combretum paniculatum, a plant with proven anti-HIV replication activity." Electronic thesis, 2007. http://upetd.up.ac.za/thesis/available/etd-08032007-173831/.

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9

Naidoo, Vinasan. "Screening of four plants commonly used in ethnoveterinary medicine for antimicrobial, antiprotozoal and anti-oxidant activity." Diss., University of Pretoria, 2004. http://upetd.up.ac.za/thesis/available/etd-03082005-091015/.

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10

Hashim, Ahmed I. "The antimicrobial activity of Sudanese honeys alone and in combination with plant extracts and ethylenediamineteraacetic acid (EDTA)." Thesis, Cardiff Metropolitan University, 2015. http://hdl.handle.net/10369/7566.

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Honey and plant extracts have a long hitory of medicinal use in Sudan that continues to the present day. The antimicrobial properties of Manuka honey and its use as a topical wound treatment is now widely recognised but of limited availability in developing countries. This study examines the physico-chemical properties and antimicrobial activity of Sudanese honeys and synergistic interactions between selected honeys and plant extracts. A sample of 60 floral honeys from Sudan were collected direct from honey producers and 15 plant extracts were obtained from Sudan National Centre for Research.

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11

Scavo, Aurelio. "Allelopathic effects of Cynara cardunculus L. extracts." Doctoral thesis, Università di Catania, 2019. http://hdl.handle.net/10761/4110.

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The present doctoral thesis aims to explore the potential use of Cynara cardunculus L. leaf extracts for the biological control of weeds and pathogen microorganisms. In a first trial, the allelopathic effects of its leaf aqueous extracts on seed germination of six common weeds was demonstrated. Secondly, the set-up of the most efficient extraction method of its allelochemicals in terms of costs, yields and inhibitory activity was realized, selecting dried leaves as the best plant material and ethanol and ethyl acetate as the best solvents. Moreover, new C. cardunculus allelochemicals (cynaratr

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12

Konderla, Patrik. "Studium bioaktivních látek růže šípkové." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-316235.

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Purpose of this thesis was research the content of biologically active substances in herbal rosehip extracts and also determination of antimicrobial and antioxidant activity of these extracts. Teoretical part describes informations about Rosa canina L., detailed specification of biologically active substances, specification of antioxidation and overview of methods determine antioxidant compound and antimicrobial activity. In the practical part was by combination of different solvents, procedures and herbal materials, made 21 extracts of Rosa canina L.. From measuring of these extracts, was mad

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13

Silva, Semiramys Moreira. "Potencial antimicrobiano de extratos de uma população de Byrsonima coccolobifolia Kunth (mirixi-caju) de Boa Vista, Roraima." Universidade Federal de Roraima, 2009. http://www.bdtd.ufrr.br/tde_busca/arquivo.php?codArquivo=140.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Byrsonima coccolobifolia Kunth conhecida popularmente como mirixi-caju, pertence ao Gênero Byrsonima e a Família Malpighiaceae. É uma das espécies mais abundantes das regiões de savana dos trópicos brasileiros que tem sido utilizada pela medicina tradicional sob a forma de infusão das folhas e cascas para o tratamento de feridas como agentes anti-sépticos. No presente estudo avaliou-se a ação antimicrobiana dos extratos metanólico, clorofórmico, acetato de etila e etanólico, produzidos a partir de partes aéreas e casca do caule de

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14

Nate, Zondi. "Green synthesis of copper and silver nanoparticles and their antimicrobial activity." Thesis, Vaal University of Technology, 2018. http://hdl.handle.net/10352/424.

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M. Tech. (Department of Chemistry, Faculty of Applied and Computer Sciences), Vaal University of Technology<br>The present study includes the use of a green synthetic method to prepare copper and silver nanoparticles using chitosan, aqueous extracts of Camellia sinensis, Combretum molle and Melia azedarach linn leaves. This study aims to investigate the influence of capping and precursor concentration on the properties of silver nanoparticles with emphasis on the medicinal plants chosen. The effect of capping agent on the properties of copper nanoparticles is also investigated. The phytochemic

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15

Jorge, Rita Eduardo. "Avaliação de óleos essenciais e extratos de Lavandula SPP. no controlo de microrganismos." Master's thesis, ISA/UL, 2014. http://hdl.handle.net/10400.5/8300.

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Mestrado em Engenharia Agronómica - Proteção de Plantas - Instituto Superior de Agronomia<br>The Portuguese flora is very rich in aromatic and medicinal plants, among which are Lavandula stoechas subsp. luisieri and L. pedunculata. The present study was aimed to evaluate the potential antimicrobial activity of five plant extracts and essential oils (EO) obtained from these species, with respect to human and plant pathogens. The EO were extracted from dried material by hydrodistillation and the extracts by a solvent system of increasing polarity. To evaluate the activity of samples against huma

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16

Pelissari, Grace Priscila [UNESP]. "Estudo farmacognóstico e avaliação das atividades antibacteriana e imunomoduladora de Melampodium divaricatum (Rich. In Pers) DC. (Asteraceae)." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/91685.

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Made available in DSpace on 2014-06-11T19:25:26Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-03-28Bitstream added on 2014-06-13T20:53:20Z : No. of bitstreams: 1 pelissari_gp_me_arafcf.pdf: 3328486 bytes, checksum: eca10418295f68f0485506997b0e2f5b (MD5)<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)<br>Universidade Estadual Paulista (UNESP)<br>Diante do amplo uso popular da espécie Melampodium divaricatum (Rich. In Pers.) DC (Asteraceae) conhecida no Brasil como falsa-calêndula, fica evidente o provável potencial farmacológico desta espécie justificando assi

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17

Lamola, Makgabo Stella. "Antimicrobial activity and cytotoxicity of extracts and an isolated compound from the edible plant Grewia flava against four enteric pathogens." Diss., University of Pretoria, 2015. http://hdl.handle.net/2263/52021.

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Bacterial infections of the gastrointestinal tract (GIT) causes vomiting, diarrhoea and even systemic infection. There is resistance to the commonly used antibiotics used to combat bacterial infection; there is a need for development of natural products into alternative and safer medicines. Studies have been conducted on the other species of the genus Grewia and there are reports of pharmacologically active compounds. There are no published studies up to date on Grewia flava. This study evaluated the antimicrobial activity of extracts prepared from berries, leaves, bark and roots of the edibl

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18

Fernandes, Maurette dos Reis Vieira. "Padronização e avaliação biológica de extratos secos de Psidium guajava L. obtidos por spray drying." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/60/60137/tde-26062013-145252/.

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A planta Psidium guajava Linn. (Myrtaceae), popularmente conhecida por goiabeira, é muito utilizada na medicina tradicional devido às suas propriedades antioxidante, antimicrobiana e anti-inflamatória. O objetivo deste trabalho foi a obtenção, padronização e avaliação das atividades biológicas de extratos secos de P. guajava obtidos por spray drying, com ênfase na influência exercida por diferentes adjuvantes tecnológicos sobre as propriedades físicoquímicas dos extratos padronizados. A primeira etapa do trabalho foi a coleta das folhas de quatro cultivares de Psidium guajava (Paluma, Pedro Sa

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19

Šmétková, Zuzana. "Studium konzervačních systémů pro kosmetiku." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2009. http://www.nusl.cz/ntk/nusl-216531.

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The aim of this diploma thesis was to prove the antimicrobial actvivity of the selected syntetic preservatives used in cosmetics, such as methylparaben, butylparaben, phenoxyethanol, bronopol, imidazolidinyl urea and methylisothaizolinone, in different concentrations (up to the highest permitted concentration and in increased concentrations), and of some essential oils, which are possible to use in cosmetics (essential oil from Eucalyptus globulus, Pimpinella anisum, Lavandula officinalis, Rosmarinus officinalis, Foeniculum vulgare, Mentha piperita, Juniperus communis and Pinus sylvestris). Th

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20

Pelissari, Grace Priscila. "Estudo farmacognóstico e avaliação das atividades antibacteriana e imunomoduladora de Melampodium divaricatum (Rich. In Pers) DC. (Asteraceae) /." Araraquara : [s.n.], 2008. http://hdl.handle.net/11449/91685.

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Resumo: Diante do amplo uso popular da espécie Melampodium divaricatum (Rich. In Pers.) DC (Asteraceae) conhecida no Brasil como falsa-calêndula, fica evidente o provável potencial farmacológico desta espécie justificando assim estudos que possam confirmar suas atividades biológicas bem como aspectos que garantam a qualidade e segurança de seu uso pela população. Neste trabalho foram estudados os extratos aquosos, etanólicos e o óleo essencial obtido a partir das partes aéreas desta espécie buscando avaliar possíveis atividades biológicas, bem como o estudo de parâmetros farmacognósticos relac

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21

Pires, Juliana Gonçalves. "Effect of Myracrodruon urundeuva and Qualea grandiflora extracts on viability and activity of microcosm biofilm and prevention of enamel demineralization in vitro." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/25/25149/tde-13072018-145259/.

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The objective of this study was to evaluate the antimicrobial and anti-caries effects of two plant extracts. The first chapter dealt with a review of the literature whose objective was to discuss the antimicrobial potential of Brazilian natural agents on the biofilm related to dental caries and gingivitis/periodontal disease. The research of the articles was carried out using PubMed. We found a total of 23 papers. Most of the studies were performed using planktonic microorganisms or under clinical trials. Nineteen articles were focused on cariogenic bacteria. From these nineteen articles, elev

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22

Talón, Argente Emmanuelle. "INCORPORATION OF ACTIVE COMPONENTS IN BIOPOLYMER-BASED FILMS FOR FOOD USE." Doctoral thesis, Universitat Politècnica de València, 2018. http://hdl.handle.net/10251/101283.

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En la presente Tesis Doctoral se han usado diferentes estrategias para incorporar compuestos activos no volátiles y volátiles en películas biodegradables a base de almidón (S) procedente de diferentes fuentes, quitosano (CH) y mezclas CH:S. Se evaluaron las propiedades funcionales de las películas y las cinéticas de liberación del compuesto activo debido a la incorporación de los polifenoles del tomillo (TE) y del ácido tánico (TA). Además, las propiedades funcionales y cinéticas de liberación de películas de almidón obtenidos por casting o por termoconformado también fueron evaluados en funci

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23

Arantes, Sílvia Alexandra Macedo. "Caracterização química e actividade biológica dos óleos essenciais e extractos aquosos de algumas Lavandula spp. do Sul de Portugal." Master's thesis, Universidade de Évora, 2012. http://hdl.handle.net/10174/17399.

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No presente trabalho estudaram-se três espécies do género Lavandula, do sul de Portugal: L. luisieri e L. pedunculata (Alentejo) e L.viridis (Algarve), com vista caraterizar a composição química dos óleos essenciais das diferentes espécies, parte vegetativa (folha) e espiga floral, e dos respetivos extratos de hidrodestilação, e avaliar as propriedades antioxidante, antimicrobiana, toxicológica, analgésica e antiinflamatória de alguns dos seus óleos essenciais e extratos aquosos, mais promissores. Os resultados mostraram importantes diferenças na composição química dos óleos essenciais, quanto

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24

Ascari, Jociani. "ESTUDO QUÍMICO E BIOATIVIDADES DE Baccharis uncinella DC." UNIVERSIDADE ESTADUAL DE PONTA GROSSA, 2007. http://tede2.uepg.br/jspui/handle/prefix/2120.

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Made available in DSpace on 2017-07-24T19:38:11Z (GMT). No. of bitstreams: 1 Jociani Ascari.pdf: 1347077 bytes, checksum: 5bf88ebdcff72a3eee1c4ed2152eb55c (MD5) Previous issue date: 2007-02-28<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Baccharis uncinella (Asteraceae), popularly known as vassoura, is little known from the chemical point of view, with only two earlier scientific works on their secondary metabolites - the volatile constituents. In the present study, the essential oil from the leaves of B. uncinella and nine extracts obtained in a Soxhlet apparatus with o

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25

Marija, Lesjak. "Biopotencijal i hemijska karakterizacija ekstrakata i etarskih ulja vrsta roda Juniperus L. (Cupressaceae)." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2011. http://dx.doi.org/10.2298/NS20111123LESJAK.

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Karakterizacija metanolnih ekstrakata i etarskih ulja iglica i &scaron;i&scaron;arki osam vrsta samoniklih kleka (rod Juniperus L.) obuhvatala je fitohemijski skrining i ispitivanje antioksidantne, antiinflamatorne i antimikrobne aktivnosti. Primenom LC-MS/MS i GC-MS tehnike detektovan i odreĎen je sadržaj fenolnih i terpenoidnih sekundarnih biomolekula. Antioksidantna aktivnost ekstrakata i etarskih ulja (sposobnost neutralizacije slobodnih radikala, redukcioni potencijal i inhibicija lipidne peroksidacije) ispitana je primenom spektrofotometrijskih metoda. U cilju odreĎivanja antiinflamatorn

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26

SILVA, Adriano Barbosa da. "Ação cicatrizante e atividade antibacteriana a estirpes de Staphylococcus resistentes do extrato etanólico de Psidium guajava." Universidade Federal Rural de Pernambuco, 2016. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5129.

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Submitted by Mario BC (mario@bc.ufrpe.br) on 2016-08-01T13:14:44Z No. of bitstreams: 1 Adriano Barbosa da Silva.pdf: 2027014 bytes, checksum: 25e6582ac2ac89419339fdf4fb2243ac (MD5)<br>Made available in DSpace on 2016-08-01T13:14:44Z (GMT). No. of bitstreams: 1 Adriano Barbosa da Silva.pdf: 2027014 bytes, checksum: 25e6582ac2ac89419339fdf4fb2243ac (MD5) Previous issue date: 2016-02-23<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>The use of medicinal plants is a human therapeutic resource dated years before the Christian era being the popular knowledge a vehicl

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Silva, Patrícia Miranda da. "Atividades biológicas de extratos de algas marinhas brasileiras." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/46/46131/tde-16062010-084634/.

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As algas são fontes importantes de matérias-primas e compostos biologicamente ativos utilizados na indústria farmacêutica, cosmética e alimentícia. As macroalgas vermelhas marinhas Gracilaria birdiae e Gracilaria domingensis são abundantemente encontradas no litoral nordeste brasileiro e apresentam alto potencial biológico para o fornecimento de compostos utilizados na indústria. Após o desenvolvimento e padronização da obtenção dos extratos e frações foram avaliadas as suas atividades antioxidante in vitro e in vivo, utilizando-se diferentes técnicas. In vitro, foram avaliadas a atividade se

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Bouarab, Lynda. "Évaluation du potentiel et de voies innovantes de mise en oeuvre de composés phénoliques antimicrobiens d’origine végétale pour la conservation des aliments." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1084.

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Le règne végétal est une ressource renouvelable d'une large gamme de métabolites secondaires biologiquement actifs. Ces travaux de thèse proposent une stratégie multidisciplinaire d'évaluation du potentiel de composés phénoliques antimicrobiens d'origine végétale pour la conservation des aliments. Un criblage de l'activité antimicrobienne in vitro vis-à-vis de 8 souches de la flore pathogène et d'altération des aliments d'une centaine de molécules pures et une soixantaine d'extraits végétaux a d'abord permis de sélectionner les plus actifs. Différents mécanismes d'action vis-à-vis de S. aureus

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Miodrag, Jazić. "Hemijski sastav i biološki potencijal ploda, soka i tropa kultivisane i divlje kupine (Rubus fruticosus L.)." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2019. https://www.cris.uns.ac.rs/record.jsf?recordId=111236&source=NDLTD&language=en.

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U okviru ove disertacije ispitan je hemijski, mineralni ipolifenolni sastav, kao i biolo&scaron;ki potencijal četiri sortekupina sa dva različita lokaliteta sjeverozapadnog dijelaBosne i Hercegovine, sa lokaliteta Verići (divlja ikultivisana sorta Čačanska bestrna) i sa lokalitetaJavorani (divlja sorta i kultivisana sorta ChesterThornles). Određen je sadržaj suve materije, pepela,sirove celuloze, ukupnih &scaron;ećera, ukupna kiselost i sadržajaskorbinske kiseline. Sadržaj mineralnih materijadetektovan je metodom optičke emisione spektrometrije(ICP-OES). Za izdvajanje ekstrakata je kori&scaron

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Pinto, Delia Manuela Luna. "Avaliação da atividade antimicrobiana do óleo essencial e do extrato de Minthostachys setosa (Briq.) Epling." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/9/9139/tde-02082010-094914/.

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A espécie Minthostachys setosa (Briq.) Epling é uma planta arbustiva aromática da família Lamiaceae que ocorre ao longo dos Andes, da Venezuela até a Argentina. A utilização popular dessa planta para diferentes fins medicinais demanda a investigação dos seus efeitos farmacológicos. O objetivo proposto foi a avaliação da atividade antimicrobiana do óleo essencial, e dos seus componentes majoritários, e do extrato hidroalcoólico liofilizado das partes aéreas da Minthostachys setosa. A planta foi submetida à extração, por percolação, obtendo-se o extrato hidroalcoólico, e por arraste a vapor, o ó

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31

Reyna-Granados, Javier Rolando. "Control of Foodborne Pathogenic Bacteria Using Natural Plant Antimicrobials." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/228511.

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Foodborne pathogens are a threat to public health worldwide. Because many consumers prefer natural compounds to synthetic additives, research on safe plant-derived compounds with antimicrobial activity against foodborne pathogens is vital. The aim of this investigation was to evaluate the antimicrobial activities of plant essential oils (oregano, cinnamon, lemongrass), their active components (carvacrol, trans-cinnamaldehyde, citral) and plant-extracts such as green tea, apple skin extract, black and decaffeinated black tea, grapes seed and pomace extracts against foodborne bacteria. Salmonel

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Wyrepkowski, Claudia Dantas Comandolli. "Estudo fitoquímico e bioatividade de extratos de casearia javitensis kunth." Universidade Federal do Amazonas, 2010. http://tede.ufam.edu.br/handle/tede/2251.

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Made available in DSpace on 2015-04-11T13:38:49Z (GMT). No. of bitstreams: 1 Claudia Comandolli.pdf: 4289017 bytes, checksum: 2bef35ae167e04ceccfedeedc54fbb31 (MD5) Previous issue date: 2010-12-15<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>The objective of the present study was to evaluate the antimicrobial, antioxidant and cytotoxicity potentials of extracts of leaves and branches of Casearia javitensis, and to purify and identify their secondary metabolites. Leaves and branches were collected in Reserva Adolpho Ducke, Manaus, AM. The plant material was dried, gri

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Miranda, Mauricio Antonio. "Atividade antimicrobiana das soluções de Barbatimão, Mamona e Clorexidina utilizadas na Endodontia. Avaliação comparativa in vitro." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/58/58133/tde-18102010-164835/.

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No presente trabalho foram avaliadas as atividades antimicrobianas do extrato hidroalcoólico do barbatimão (Stryphnodendron adstringens), do detergente de mamona (Endoquil Poliquil®) e da solução de digluconato de clorexidina a 2% sobre microrganismos bucais potencialmente envolvidos em infecções endodônticas O barbatimão, como é popularmente conhecido, é muito utilizado na medicina popular para o tratamento de algumas enfermidades como a gonorréia, diarréia, úlceras, como antiinflamatório e cicatrizante. O detergente de mamona (Ricinus communis) possui atividade antimicrobiana similar ao do

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Souza, Pedro Henrique Sette de. "Potencial de extratos da Schinopsis brasiliensis Engl. para desenvolvimento de produtos odontológicos." Universidade Estadual da Paraíba, 2015. http://tede.bc.uepb.edu.br/tede/jspui/handle/tede/2276.

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Coelho, Jéssica Aparecida. "Avaliação in vitro das atividades antioxidante, antimicrobiana e citotóxica de extratos orgânicos das cascas da do fruto jabuticaba (Myrciaria cauliflora Berg)." Universidade Estadual do Oeste do Paraná, 2017. http://tede.unioeste.br/handle/tede/2959.

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Submitted by Rosangela Silva (rosangela.silva3@unioeste.br) on 2017-08-30T17:15:03Z No. of bitstreams: 2 Jéssica Aparecida Coelho.pdf: 983869 bytes, checksum: f052f02c58568ed9e5417fa5e8c7bc58 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Made available in DSpace on 2017-08-30T17:15:03Z (GMT). No. of bitstreams: 2 Jéssica Aparecida Coelho.pdf: 983869 bytes, checksum: f052f02c58568ed9e5417fa5e8c7bc58 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2017-02-08<br>Currently, research related to natural produ

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Val, Érico Brito. "Estudo de padronização de extratos de folhas da caramboleira (Averrhoa carambola L.) na pesquisa e desenvolvimento de medicamentos antimicrobianos." Universidade Federal do Maranhão, 2014. http://tedebc.ufma.br:8080/jspui/handle/tede/1623.

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Submitted by Rosivalda Pereira (mrs.pereira@ufma.br) on 2017-06-13T20:47:42Z No. of bitstreams: 1 EricoBritoVal.pdf: 419073 bytes, checksum: 939060a3ae4b2d788cc53dfc2b7e31e5 (MD5)<br>Made available in DSpace on 2017-06-13T20:47:42Z (GMT). No. of bitstreams: 1 EricoBritoVal.pdf: 419073 bytes, checksum: 939060a3ae4b2d788cc53dfc2b7e31e5 (MD5) Previous issue date: 2014-08-29<br>The pharmaceutical industry invests millions of dollars on research of new pharmacs with antimicrobial activity, that can be used to develop new medicines, highlighting the ones from natural sources. To produce any kind o

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Amodeo, Andrea. "Attività antimicrobica e antitumorale di estratti dei ramoscelli di Celtis aetnensis (Tornab.) Strobl." Doctoral thesis, Università di Catania, 2014. http://hdl.handle.net/10761/1562.

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Il genere Celtis (Ulmaceae) comprende circa 70 specie di alberi o arbusti diffusi principalmente nelle regioni temperate e tropicali dell Emisfero Nord. Alcune specie di Celtis sono impiegate in medicina tradizionale per la cura di lombalgie, disturbi gastrici, dolori addominali, nonché per la loro azione astringente e lenitiva in caso di diarrea, enterite ed infiammazione del cavo orale. Tali proprietà sono principalmente attribuibili a principi attivi contenuti nelle foglie, quali tannini, saponine e flavonoidi, ma, recentemente, alcuni studi fitochimici hanno mostrato che i ramoscelli delle

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SILVA, Antônio Andre Lima da. "Avaliação da atividade antimicrobiana e da histocompatibilidadede extratos de Syzygium cumini (L.) Skeels." Universidade Federal de Pernambuco, 2009. https://repositorio.ufpe.br/handle/123456789/18498.

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Submitted by Fabio Sobreira Campos da Costa (fabio.sobreira@ufpe.br) on 2017-04-06T14:53:11Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) DISSERT COM FICHA FINAL imprimir.pdf: 1883031 bytes, checksum: 5ef0ed7e1b300d25be7b0e8aac6f1886 (MD5)<br>Made available in DSpace on 2017-04-06T14:53:11Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) DISSERT COM FICHA FINAL imprimir.pdf: 1883031 bytes, checksum: 5ef0ed7e1b300d25be7b0e8aac6f1886 (MD5) Previous issue date: 2009-09-04<br>Syzygium cumini (

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Guedes, Vanessa Rodrigues. "Estudo das atividades antimicrobianas dos extratos dos fungos Moniliophthora perniciosa, Phytophthora palmivora, Trichoderma stromaticum e Xylaria spp., e estudo químico de exemplares de Xylaria spp." reponame:Repositório Institucional da UFBA, 2011. http://www.repositorio.ufba.br/ri/handle/ri/10057.

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274f.<br>Submitted by Ana Hilda Fonseca (anahilda@ufba.br) on 2013-04-03T15:45:11Z No. of bitstreams: 1 Tese Vanessa R Guedes.pdf: 23534749 bytes, checksum: df0c04b0207f9bf62a0952e36a12f3f8 (MD5)<br>Approved for entry into archive by Ana Hilda Fonseca(anahilda@ufba.br) on 2013-04-23T16:58:28Z (GMT) No. of bitstreams: 1 Tese Vanessa R Guedes.pdf: 23534749 bytes, checksum: df0c04b0207f9bf62a0952e36a12f3f8 (MD5)<br>Made available in DSpace on 2013-04-23T16:58:28Z (GMT). No. of bitstreams: 1 Tese Vanessa R Guedes.pdf: 23534749 bytes, checksum: df0c04b0207f9bf62a0952e36a12f3f8 (MD5) Previous

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Issa, Fabiana Inacio da Costa. "Avaliação das atividades antioxidante e antimicrobiana de extratos de Apoclada simplex McClure & Smith (Poaceae: Bambusoideae)." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/9/9138/tde-17022016-102354/.

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A substituição dos conservantes sintéticos em cosméticos por produtos naturais é uma tendência, direcionando as pesquisas para a busca de novas alternativas de compostos antimicrobianos naturais. Extratos de bambus asiáticos têm ampla aplicação na indústria cosmética, sendo muito utilizados em diversas formulações. No Brasil, a triagem química de espécies nativas de bambus para futuras aplicações na indústria ainda é incipiente. O objetivo do trabalho foi avaliar as atividades antioxidante e antimicrobiana de extratos e frações de folhas e colmos de A. simplex McClure & Smith. Extratos brutos

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Bezerra, Suzana Barbosa. "Potencial farmacolÃgico do extrato seco de matricaria recutita (Chamomilla) e do Alfa-Bisabolol." Universidade Federal do CearÃ, 2009. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=3895.

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FundaÃÃo de Amparo Ã Pesquisa do Estado do CearÃ<br>Matricaria recutita, conhecida popularmente como camomila, Ã uma espÃcie vegetal utilizada na medicina devido Ãs suas propriedades sedativa, antiinflamatÃria e cicatrizante, entre outros. O alfa-bisabolol, um sesquiterpeno presente em seu Ãleo essencial, tambÃm possui vÃrias atividades farmacolÃgicas reconhecidas. Neste trabalho foram avaliadas as atividades gastroprotetora, antioxidante, antimicrobiana e citotÃxica do extrato seco das flores de camomila (ESFC) e do alfa-bisabolol (BISA). Na atividade gastroprotetora, o ESFC nas doses 100, 20

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Rocha, Ibrahim Vieira. "Desenvolvimento de um enxaguatório bucal com extrato nebulizado de Guapira graciliflora (L.)." Universidade Estadual da Paraíba, 2017. http://tede.bc.uepb.edu.br/jspui/handle/tede/3128.

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Submitted by Jean Medeiros (jeanletras@uepb.edu.br) on 2018-06-19T14:04:27Z No. of bitstreams: 1 PDF - Ibrahim Vieira Rocha.pdf: 50898078 bytes, checksum: c4f8b8a31f362dd3548a8bb36cbc1ecf (MD5)<br>Approved for entry into archive by Secta BC (secta.csu.bc@uepb.edu.br) on 2018-07-03T17:47:43Z (GMT) No. of bitstreams: 1 PDF - Ibrahim Vieira Rocha.pdf: 50898078 bytes, checksum: c4f8b8a31f362dd3548a8bb36cbc1ecf (MD5)<br>Made available in DSpace on 2018-07-03T17:47:43Z (GMT). No. of bitstreams: 1 PDF - Ibrahim Vieira Rocha.pdf: 50898078 bytes, checksum: c4f8b8a31f362dd3548a8bb36cbc1ecf (MD5) Prev

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Pallová, Jana. "Příprava a charakterizace extraktů echinacey." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-449758.

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Echinacea purpurea is a rich source of biologically active compounds, which are attributed to several therapeutic effects. This thesis is focused on the optimization of the extraction process, considered these substances. Maceration was chosen as a type of extraction, due to its simplicity. The Optimal conditions were solid-solvent ratio 1: 5, 40% ethanol, 60 °C, 60 minutes. An extract from the dried flowers of Echinacea purpurea was prepared by this optimized process. The content of total phenolic compounds was set on 365.18 ± 3.51 [mg_GAEl^(-1)] and the antioxidant activity was 507.50 ± 6.89

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Moraes, Helen Pimenta de [UNESP]. "Avaliação in vitro da atividade antibacteriana de extratos de Byrsonima ssp E Alchornea ssp: estudo comparativo entre as técnicas de diluição em tubos e microplacas." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/97904.

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Made available in DSpace on 2014-06-11T19:29:09Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-07-28Bitstream added on 2014-06-13T20:19:00Z : No. of bitstreams: 1 moraes_hp_me_arafcf.pdf: 1421590 bytes, checksum: 13ffb8dfe23f8d17e358dcedf26cd6c1 (MD5)<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)<br>Universidade Estadual Paulista (UNESP)<br>O Brasil apresenta uma grande diversidade de plantas medicinais, cuja utilização pela população vem aumentando cada vez mais. Byrsonima (Malpighiaceae) e Alchornea (Euphorbiaceae) que são plantas do Bioma-Cerrado do estad

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Sousa, Jessica Maria Silva. "Análise de compostos fenólicos e avaliação da atividade antioxidante e antimicrobiana de extratos aquosos de cogumelos comestíveis produzidos no Brasil." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/254274.

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Orientador: Helena Teixeira Godoy<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos<br>Made available in DSpace on 2018-08-19T16:32:45Z (GMT). No. of bitstreams: 1 Sousa_JessicaMariaSilva_M.pdf: 1636413 bytes, checksum: eef8c829695e9cc3aff1047919b3eaed (MD5) Previous issue date: 2012<br>Resumo: O aprofundamento do estudo relativo aos compostos naturais com propriedades antioxidantes e antimicrobianas em cogumelos torna-se extremamente relevante tendo em vista a possibilidade de esses compostos serem empregados nas indústrias de alimentos, far

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Silva, Paulo Sérgio Gomes da. "Avaliação antimicrobiana e cicatrizante de extratos da Jatropha Gossypiifolia L.: estudo In vitro." Universidade Federal de Alagoas, 2017. http://www.repositorio.ufal.br/handle/riufal/1753.

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Plants have been utilized for treatment of diseases throughout human existence and, culturally have been the bases for treatment of several diseases, both in traditional way, due to knowledge of the certain plant properties, passed from generation to generation, as well as by the Its use as a source of bioactive compounds, derived from scientific research. The present study aimed to investigate cytotoxicity, antimicrobial and wound healing potential of leaves, twigs and steam extracts of Jatropha gossypiifolia L. Leaves, twigs and stems were separated and dried at room temperature and the extr

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Costa, Viviane Carla. "Avaliação de acibenzolar-s-metil, extrato cítrico e fermentado bacteriano no controle da murcha-bacteriana (Ralstonia solanacearum) do tomateiro (Lycopersicon esculentum Mill)." Universidade Estadual do Oeste do Paraná, 2007. http://tede.unioeste.br:8080/tede/handle/tede/1321.

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Made available in DSpace on 2017-07-10T17:37:20Z (GMT). No. of bitstreams: 1 Viviane_Carla_Costa.pdf: 473789 bytes, checksum: 9b33eaf852229f3ad4dd60593345f2b1 (MD5) Previous issue date: 2007-08-27<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The bacterial wilt caused by Ralstonia solanacearum is one of the main diseases that can reduce the productivity of tomato culture (Lycopersicon esculentum). The control of this pathogen is difficult, since the bacteria overwinter in plant debris, in diseased plants and in the soil. The use of resistance varieties is difficult beca

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Ngungeni, Yonela. "Antimicrobial, anticancer and catalytic activities of green synthesized Avocado seed extract-gold nanoparticles." University of the Western Cape, 2019. http://hdl.handle.net/11394/7809.

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>Magister Scientiae - MSc<br>Nature through billions of years of trial and error has produced an immeasurable amount of natural systems like plants, birds and animals. The intelligence of nature is hidden in these natural systems and researchers are turning towards “Nature’s intelligence” to find inspiration and advance novelty in the development of nanomaterials. Gold nanoparticles (AuNPs) have unique optical, electronic and physicochemical features which has gained them popularity and widespread exploitation in various applications. The conventional methods used for AuNPs synthesis emp

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Quecan, Beatriz Ximena Valencia. "Efeito de extratos orgânicos de variedades de cebola sobre o quorum sensing bacteriano." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/9/9131/tde-13072018-154211/.

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Muitos genes bacterianos são regulados pelo mecanismo de comunicação denominado quorum sensing (QS). Neste sistema, moléculas sinalizadoras ativam um comportamento de grupo, conforme a densidade celular, permitindo o controle da expressão gênica. Estudos sugerem o potencial de compostos extraídos de plantas sobre o QS, a exemplo da quercetina, um flavonol presente em concentrações elevadas em algumas frutas e hortaliças. Este composto é o flavonoide majoritário presente em cebola (Allium cepa), mas não existem estudos que mostrem a atividade anti-QS de extratos orgânicos deste vegetal. Este tr

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Lucas, Shakeela. "Green synthesis and characterization of silver nanoparticles (AgNPs) from Bulbine frutescens leaf extract and their antimicrobial effects." University of the Western Cape, 2020. http://hdl.handle.net/11394/7251.

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>Magister Scientiae - MSc<br>Combating antimicrobial resistant infections caused by nosocomial pathogens poses a major public health problem globally. The widespread use of broad-spectrum antibiotics for the treatment of wound infections has led to the appearance of multidrug-resistant (MDR) microbes which further exacerbates the growth of microbes amongst patients. It may result in prolonged debility of the patient and an increase in healthcare costs due to prolonged hospital stays and expensive treatment regimens to avoid patient-patient transmission. Therefore, it is imperative that alterna

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