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Дисертації з теми "Compounds of phenolic nature"

Автор: Grafiati
Опубліковано: 3 червня 2025
Оновлено: 31 липня 2025

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1

Cetin-Karaca, Hayriye. "EVALUATION OF NATURAL ANTIMICROBIAL PHENOLIC COMPOUNDS AGAINST FOODBORNE PATHOGENS." UKnowledge, 2011. http://uknowledge.uky.edu/gradschool_theses/652.

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Анотація:
Raw and processed foods are vulnerable to contamination during their production, distribution and sale. Thus, a wide variety of chemical preservatives are used in the food industry to prevent the growth of food spoilage and pathogenic bacteria. However, health and economic concerns have led to an intensive search for natural alternatives, such as plant extracts, that can safely be used as substitutes for synthetic antimicrobials and preservatives to partially or completely inhibit the growth of bacteria. This study evaluated the antimicrobial effects of natural phenolic compounds extracted fro
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2

Matos, Melanie S. "Exploring the potential of natural extracts obtained from winemaking waste streams for cosmetic applications." Master's thesis, Universidade Nova de Lisboa, Instituto de Tecnologia Química e Biológica António Xavier, 2017. http://hdl.handle.net/10362/79299.

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Анотація:
"Phenolic compounds present in grapes have been widely explored as cosmetic principles, because of their renowned antioxidant activity and proven ability to directly inhibit certain enzymes relevant for skin ageing. The winemaking process generates large amounts of waste streams, thus recovery of phenolic bioactive compounds from residues and further incorporation in cosmetic products represents a promising market opportunity for wine producers, and may contribute to a sustainable development of the sector.(...)"<br>N/A
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3

Kennedy, Michael James. "Natural and enhanced wood durability from pine heartwood phenolics." Thesis, Queensland University of Technology, 1996. https://eprints.qut.edu.au/107122/1/z%20T%28S%29%20108%20Natural%20and%20enhanced%20wood%20durability%20fro%20pine%20heartwood%20phenolics.pdf.

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Анотація:
Wood is a naturally occurring, complex, structured, polymeric material comprised of a structural matrix in which are embedded a vast variety of extractible compounds. The organic carbon-rich matrix is susceptible to biodeterioration by a wide range of bacterial, fungal, insect and other organisms, despite protective effects of the extractives. Wood preservatives developed over the past 50 years have provided efficient ways of preventing biodeterioration, but many of them are under threat from an increasingly chemophobic populace. Naturally bioactive wood extractives offer promise of control o
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4

Herrera, Hernández María Guadalupe. "Structural and functional effects of natural phenolic compounds on rhodopsin mutants associated with retinitis pigmentosa." Doctoral thesis, Universitat Politècnica de Catalunya, 2017. http://hdl.handle.net/10803/461174.

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Анотація:
Dietary polyphenols represent a group of secondary metabolites which widely occur in fruits, vegetables, wine, tea, extra virgin olive oil, chocolate and other cocoa products. Previous studies have shown the interaction of certain phenolic compounds with estrogen and adenosine receptors, belonging to the G-protein coupled receptors (GPCRs) superfamily. GPCRs are the largest family of signal transduction molecules involved in most of the physiological processes. Rhodopsin is the prototypic member of GPCRs. This receptor is the major protein found in the disks membrane of the outer segments of
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5

Frankki, Sofia. "Association of organic compounds to dissolved and particulate natural organic matter in soils /." Umeå : Dept. of Forest Ecology, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/200652.pdf.

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6

Hu, Shuting, та 胡舒婷. "Resorcinol-type phenolic compounds from natural sources inhibut α-MSH induced melanogenesis and UVA-induced DNA damage". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/207207.

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Анотація:
Sunlight exposure is inevitable to all humans and UV radiation in the sunlight usually causes damages to the skin. Tanning, first appearing when UV injures occur, is a pigmentation process which can be considered as a natural defense mechanism of the organism. Melanin plays an important role in the prevention of the skin from harmful environmental factors such as UV radiation. However, the excess accumulation of melanin causes hyperpigmentation, which is associated with a number of unhealthy conditions including solar lentigines, melasma, freckles and post-inflammatory hyperpigmentation. There
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7

Oliveira, Lucillia Rabelo de. "Avaliação dos compostos fenólicos e das propriedades antioxidantes da polpa do pequi (Caryocar spp) processado e in natura." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/9/9131/tde-22052013-113150/.

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Анотація:
O pequi caracteriza-se por possuir expressiva quantidade de compostos fenólicos, que por apresentarem propriedades antioxidantes estão associados com a prevenção da formação de radicais livres. Além de ser consumido in natura, é também comumente consumido na forma processada. No entanto, sabe-se que os antioxidantes presentes nos vegetais podem ser afetados pela forma de processamento e provocam alterações dos teores de fenólicos totais (FT) bem como da sua atividade antioxidante. Este trabalho objetivou avaliar o teor de FT e as propriedades antioxidantes da polpa do pequi processado e in nat
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8

Yan, Liang. "Tailoring of the activation process of carbonaceous adsorbentsfor improving their adsorption effectiveness." University of Cincinnati / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396524230.

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9

Balisteiro, Diully Mata. "Efeito dos compostos fenólicos de frutas nativas brasileiras na glicemia pós prandial." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/9/9131/tde-05042017-111845/.

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Анотація:
Algumas frutas nativas brasileiras podem ser consideradas excelentes fontes de compostos bioativos de natureza fenólica. Destacamos, dentre elas, o cambuci, o araçá, o camu-camu, a cagaita, algumas espécies de maracujá silvestres e a jabuticaba. Alguns destes compostos são capazes de inibir as enzimas do metabolismo de carboidratos in vitro. A inibição das enzimas &#945;-amilase e &#945;-glicosidase retardam e prolonga o tempo de digestão de carboidratos reduzindo, assim, a proporção e a velocidade de glicose absorvida e, consequentemente, o aumento brusco de glicose pós-prandial no plasma. Os
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10

Infante, Juliana. "Composição fenólica e atividade antioxidante de polpa, casca, semente e folha de espécies frutíferas nativas do Brasil." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/11/11141/tde-19122013-165106/.

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Анотація:
O Brasil possui uma imensa diversidade biológica, na qual muitos compostos bioativos podem ser encontrados e utilizados em beneficio à sociedade. No entanto, processos de degradação do ambiente e introdução de espécies exóticas têm contribuído ao conhecimento e uso limitadosde muitas plantas nativas, sendopequena a quantidade de estudos sobre sua composição química e potencial biológico. A prevenção de doenças crônicas constantemente vem sendo associada à atividade antioxidante de metabólitos secundários dos vegetais, principalmente os fenólicos. Assim, o objetivo deste trabalho foi avaliar a
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11

Zadra, Marina. "ANÁLISE FITOQUÍMICA, AVALIAÇÃO DA ATIVIDADE ANTIOXIDANTE E ANTIMICROBIANA DE Solanum guaraniticum A. ST.-HIL." Universidade Federal de Santa Maria, 2013. http://repositorio.ufsm.br/handle/1/6016.

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Анотація:
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The Solanaceae family is one of the largest and most complex, especially the Solanum genus, with about 1500 species. Solanum guaraniticum is a shrub found in Paraguay, Argentina and Brazil, popularly known as jurubeba or false jurubeba. This study aimed to quantify the main classes of secondary metabolites and determine the antimicrobial and antioxidant activities of the leaves of S. guaraniticum. The plant material was collected in the city of Guaporé, RS, Brazil, and is registered in the herbarium of the Biology Department at the
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12

Viera, Vanessa Bordin. "OBTENÇÃO DO EXTRATO DE PRÓPOLIS ASSISTIDA POR MICRO-ONDAS, APLICAÇÃO EM LINGUIÇA TOSCANA E AVALIAÇÃO DA SUA CAPACIDADE ANTIOXIDANTE." Universidade Federal de Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/5724.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>The present study aimed to evaluate the propolis ethanolic extract obtained by microwave assisted extraction regarding to its phenolic compounds amount, antioxidant activity and its use in the Tuscany Italian sausage. The amount of total phenolic content and antioxidant activity was evaluated by the DPPH method. After optimization, the selected extraction parameters were used to obtain extracts used in 0, 5%, 1% and 2% (p/v) concentrations in the Tuscan Italian sausage manufacture, wich were analyzed during 56 days. It was analyz
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13

Lieurance, Deah. "MECHANISMS OF SUCCESS: PLANT-HERBIVORE INTERACTIONS AND THE INVASION OF NON-NATIVE LONICERA SPECIES IN NORTH AMERICA." Wright State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=wright1363949172.

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14

Ali, Saiqa Mubeen. "Thermophilic biodegradation of phenolic compounds." Thesis, University College London (University of London), 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339092.

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15

Vasco, Catalina. "Phenolic compounds in Ecuadorian fruits /." Uppsala : Dept. of Food Science, Swedish University of Agricultural Sciences, 2009. http://epsilon.slu.se/200954.pdf.

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16

Marasca, Samuel. "CRESCIMENTO, HEMATOLOGIA, METABOLISMO E PARÂMETROS OXIDATIVOS DE JUNDIÁS ALIMENTADOS COM DIETAS CONTENDO FOLHA DE Lippia alba." Universidade Federal de Santa Maria, 2016. http://repositorio.ufsm.br/handle/1/10924.

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Анотація:
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The use of plants as antioxidants is becoming a very important alternative in the food industry and animal production. The Lippia alba is a native plant to Brazil that posses phenolic compounds and essential oils in composition. In this study, the aim was evaluating the inclusion of the leaf from L. alba in the diet from silver catfish (Rhamdia quelen) regarding growth, hematology, metabolism and oxidative parameters. For this, we conducted an experiment lasting 60 days in a re-use water system (20 tanks/250L) with biological filtr
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17

Sichieri, Ana Paula Marques Pino. "Potencial antioxidante de extratos de especiarias em sistemas modelo e na estabilidade oxidativa do óleo de soja." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/11/11141/tde-16122013-145802/.

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Анотація:
A degradação oxidativa dos lipídeos é um fator preponderante que limita a vida útil dos alimentos, reduzindo suas qualidades nutricionais e organolépticas. A utilização de antioxidantes durante o processo de fabricação pode diminuir consideravelmente a extensão da oxidação lipídica, desencadeada pela reação de radicais livres. A crescente preocupação pelo consumo de alimentos mais saudáveis e livres de aditivos sintéticos tem recebido maior atenção pelas indústrias, que atualmente tem procurado por alternativas mais naturais, como o uso de antioxidantes provenientes de especiarias, como uma fo
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18

Bourne, Thomas Franklin. "Biodegradation of keratins and phenolic compounds." Diss., Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/25403.

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19

Zhu, Fan, and 朱帆. "Interactions of carbohydrates with phenolic compounds." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B45584710.

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20

Clarke, Jill. "The photocatalytic degradation of phenolic compounds." Thesis, Open University, 1998. http://oro.open.ac.uk/57738/.

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Анотація:
Semiconductor photocatalysis degrades phenolic pollutants to carbon dioxide and water, but the mechanisms of this potentially attractive method of environmental remediation remain unclear. This study aimed to elucidate the primary molecular events by HPLC analysis of the initial products of degradation in water or aqueous acetonitrile. The position of substituents relative to the hydroxyl group were found to influence the reaction rate and also primary oxidation steps, and hence the intermediate profile. 2,6- Dialkylated phenols reacted fastest and showed high conversion to dehydrodimeric prod
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21

Ravaglia, Daniela <1981&gt. "Control of peach phenolic compounds content." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/2717/1/Ravaglia_Daniela_Tesi.pdf.

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Анотація:
Phenolic compounds play a central role in peach fruit colour, flavour and health attributes. Phenolic profiles of several peaches and nectarines and most of the structural genes leading to the anthocyanin synthesis in peach fruit have been studied. Moreover, crosses of red and non-red peaches suggested that a major gene controls skin colour of the extreme phenotypes ‘highlighter’ and ‘full-red’. However, there is no data about either the ‘flavan-3-ols specific genes’ (ANR and LAR) or the regulation of the flavonoid metabolism in this crop. In the present study, we determined the concentr
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22

Ravaglia, Daniela <1981&gt. "Control of peach phenolic compounds content." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/2717/.

Повний текст джерела
Анотація:
Phenolic compounds play a central role in peach fruit colour, flavour and health attributes. Phenolic profiles of several peaches and nectarines and most of the structural genes leading to the anthocyanin synthesis in peach fruit have been studied. Moreover, crosses of red and non-red peaches suggested that a major gene controls skin colour of the extreme phenotypes ‘highlighter’ and ‘full-red’. However, there is no data about either the ‘flavan-3-ols specific genes’ (ANR and LAR) or the regulation of the flavonoid metabolism in this crop. In the present study, we determined the concentr
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23

Khadambi, Tshiwela Norah. "Antimicrobial properties of phenolic compounds from sorghum." Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-03022007-164705.

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24

Koul, Anju L. "Developmental aspects of phenolic compounds in lentils." Thesis, University of Ottawa (Canada), 1987. http://hdl.handle.net/10393/22412.

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25

Eccott, A. R. "Environmental stress cracking resistance of phenolic compounds." Thesis, Swansea University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.636763.

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Анотація:
The environmental stress cracking (ESC) behaviour of a series of phenolics toughened with varying proportions of thermoplastic (0-35%), has been studied. Since these materials have been designed for applications in 'under-the-bonnet' automotive components, testing took place in serveral 'in-service' environments and in some of the constituent chemicals as well as in air. Initial screening of the materials using three point bend testing highlighted the most hostile environments for further study. Tensile testing of samples in air and in methanol and immersion of samples in various environments
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26

Seaton, Angela. "Anti-tumour activity of novel phenolic compounds." Thesis, University of Nottingham, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324524.

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27

Santos, Sónia Andreia Oliveira. "Phenolic compounds from forest industrial by-products." Doctoral thesis, Universidade de Aveiro, 2012. http://hdl.handle.net/10773/9722.

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Анотація:
Doutoramento em Química<br>Em Portugal, as indústrias corticeira e de pasta de papel constituem um importante sector económico, contudo, gerando elevadas quantidades de subprodutos. Estes subprodutos poderiam ser explorados em aplicações de alto valor acrescentado, como fonte de compostos fenólicos, por exemplo, em vez de serem apenas queimados para produção de energia. Estes compostos são conhecidos pelas suas inúmeras propriedades, entre as quais, antioxidante, anti-inflamatória e anti-trombótica. Neste estudo as frações fenólicas da maior parte dos subprodutos gerados nas indústrias
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28

Giada, Maria de Lourdes Reis. "Avaliação da capacidade antioxidante dos compostos fenólicos do cotilédone da semente de girassol (Helianthus annuus L.) rajada." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/9/9132/tde-22082017-093259/.

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Анотація:
No presente trabalho foi avaliada a capacidade antioxidante in vitro dos extratos do cotilédone da semente de girassol rajada, obtidos por extração seqüencial com solventes de diferentes polaridades, bem como avaliado o potencial antioxidante in vitro do extrato que apresentou maior capacidade in vitro. Todos os parâmetros in vitro (sistema &#946;-caroteno/ácido Iinoléico, métodos FRAP, DPPH, ORAC e Rancimat) indicaram o extrato aquoso (EAq) como o de maior capacidade. Neste extrato, o ácido clorogênico (12,88%) foi identificado como o principal componente dos ácidos fenólicos. Na avaliação da
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29

Burch, Rachel S. B. "Analysis of phenolic compounds in tropical fruit juices." Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265174.

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30

Cummings, Edward A. "A study of amperometric biosensors of phenolic compounds." Thesis, University of Ulster, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342389.

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31

PHOMMALATH, Siviengkhek. "Genetic analysis of phenolic compounds in soybean seed." Kyoto University, 2013. http://hdl.handle.net/2433/175055.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第17626号<br>農博第1988号<br>新制||農||1010(附属図書館)<br>学位論文||H25||N4747(農学部図書室)<br>30392<br>京都大学大学院農学研究科農学専攻<br>(主査)教授 奥本 裕, 教授 白岩 立彦, 教授 松村 康生<br>学位規則第4条第1項該当
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32

Lima, Rebeca Larangeira de. "Perfil sazonal da atividade de antioxidante in vitro de algas da famÃlia Caulerpaceae." Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=15354.

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Анотація:
Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>As macroalgas sÃo fontes de molÃculas bioativas com propriedades antioxidantes, muitas das quais apresentam variaÃÃes ao longo do ano. Cinco algas verdes do gÃnero Caulerpa (C. cupressoides, C. mexicana, C. prolifera, C. racemosa e C. sertularioides) foram coletadas mensalmente na Praia do Pacheco, de janeiro a dezembro de 2006. ApÃs as coletas, elas foram transportadas para o laboratÃrio, lavadas com Ãgua corrente para retirada de impurezas e epÃfitas e liofilizadas. Os extratos algÃceos foram preparados em metanol (MeOH) na pro
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33

Hasbay, Adil Incinur. "Pressurized Liquid Extraction Of Phenolic Compounds From Fruit Pomaces." Phd thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/3/12607525/index.pdf.

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Анотація:
In this study, extraction of phenolic compounds from sour cherry, peach and apple pomaces using high pressure extraction (HPE) and subcritical CO2 extraction (SCE) was investigated considering total phenolic content (TPC) and antiradical efficiency (AE). Different combinations of pressure (50, 125, 200 MPa), temperature (20, 40, 60&amp<br>#61616<br>C), solid/solvent ratio (0.05, 0.15, 0.25 g/ml) and extraction time (10, 25, 40 min) were used for HPE according to the Box-Behnken experimental design. The variables used for SCE were pressure (20, 40, 60 MPa), temperature (40, 50, 60&amp<br>#6161
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34

Durmaz, Ezgi. "Microwave Extraction Of Phenolic Compounds From Caper And Oleaster." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614418/index.pdf.

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Анотація:
The main objective of this study was to extract phenolic compounds from caper and oleaster by using microwave. The effects of microwave power (400 and 700 W), extraction time (5-20 min), solid to solvent ratio (1:10, 1:20 and 1:30) and solvent type (water, ethanol and different ratios of ethanol-water mixture) on total phenolic content, antioxidant activity and concentration of the phenolic compounds in the extracts were investigated. In conventional extraction, extraction time and solvent type were used as independent variables. Microwave extraction was compared with conventional extraction.
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35

Cherubin, Patrick. "The Anti-toxin Properties of Grape Seed Phenolic Compounds." Master's thesis, University of Central Florida, 2014. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6254.

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Анотація:
Corynebacterium diphtheriae, Pseudomonas aeruginosa, Ricinus communis, Shigella dysentariae, and Vibrio cholerae produce AB toxins which share the same basic structural characteristics: a catalytic A subunit attached to a cell-binding B subunit. All AB toxins have cytosolic targets despite an initial extracellular location. AB toxins use different methods to reach the cytosol and have different effects on the target cell. Broad-spectrum inhibitors against these toxins are therefore hard to develop because they use different surface receptors, entry mechanisms, enzyme activities, and cytosolic
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36

Fang, Zheng. "Formation of polyols from phenolic compounds in bio-oils." Master's thesis, Université Laval, 2017. http://hdl.handle.net/20.500.11794/27994.

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Le polyuréthane (PU) est le polymère synthétique le plus utilisé dans des applications comme les revêtements, les adhésifs, les élastomères, les mousses et les fibres. De nos jours, la lignine est utilisée dans la synthèse de PU. Une conversion hautement efficace mais peu coûteuse de la lignine est un élément clé de l'utilisation commerciale de la conversion de la biomasse lignocellulosique. L'utilisation de la lignine pour remplacer une partie de polyols en synthèse de polyuréthane suit deux approches principales: (1) utiliser directement de la lignine sans modification chimique préliminaire;
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37

Silva, Ana Filipa Martins Cláudio da. "Extraction of phenolic compounds with aqueous two-phase systems." Master's thesis, Universidade de Aveiro, 2010. http://hdl.handle.net/10773/3152.

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Mestrado em Engenharia Química<br>Nos últimos anos, os sistemas aquosos bifásicos (ATPS), utilizando líquidos iónicos, têm revelado um enorme potencial no desenvolvimento de novas técnicas de separação e purificação de biomoléculas, mantendo as suas características funcionais intactas. Neste trabalho, os coeficientes de partição da vanilina e ácido gálico, dois compostos fenólicos com aplicações e propriedades antioxidantes bem conhecidas, foram determinados recorrendo a ATPS envolvendo líquidos iónicos. Foram avaliadas três condições no processo de partição da vanilina: natureza catiónica e a
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38

Milani, Liana Inês Guidolin. "Avaliação da atividade antimicrobiana e antioxidante de extratos de caqui (Diospyros kaky l.) para proteção de produtos cárneos." Universidade Federal de Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/3387.

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Microbial and oxidative changes occurring in meat and meat products cause loss of quality and consequent commercial devaluation. The consumption of meat products has caused concern among consumers by the presence of chemical preservatives, which are often questioned because of the risk of harmful side effects to health. In an attempt to control microbial and oxidative changes, researches have been performed with the purpose of isolating natural phytochemicals obtained from various plant substrates, which besides having the preference of the consumers, also have the ability to act helping
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Debrabandere, Kristof. "Development of long fibre heat cure phenolic dough moulding compounds." Thesis, Loughborough University, 1994. https://dspace.lboro.ac.uk/2134/28064.

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Traditionally, dough moulding compounds (DMCs) have been based on unsaturated polyester resins (UPR), fillers and glass fibre reinforcements. Such systems however are inflammable and will emit dense, toxic smoke on combustion. Phenolic resins, on the other hand, have excellent flame retardant properties, but slightly inferior mechanical properties. Phenolic DMCs are based on mineral fillers and glass fibre reinforcements, compounded into a phenolic resol (heat cure) resin. Compounding these systems using a co-rotating twin screw extruder, instead of the traditional method using a Z-blade mixer
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Caza, Nicole. "Removal of phenolic compounds from synthetic wastewater using soybean peroxidase." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0011/MQ52449.pdf.

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Hassan, Mohamed S. A. "Egg protein interactions with phenolic compounds: effect on protein properties." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=117210.

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Interactions of egg proteins (ovalbumin, conalbumin, egg white proteins, and egg yolk proteins) with selected phenolic compounds (flavone, chrysin, quercetin, and rutin) in aqueous media were examined by electrophoresis and fluorescence spectrophotometry. SDS-PAGE and native-PAGE results showed variable changes on the electrophoretic behaviour of egg white proteins in the presence of quercetin, while conalbumin-phenolic reaction products showed interactions under non-reducing conditions only. Fluorescence quenching technique was used to investigate the nature of egg protein-phenolic interactio
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McCallum, John Allan. "Biochemistry of phenolic compounds in wheat grain (Triticum aestivum L.)." Thesis, University of Canterbury. Botany, 1989. http://hdl.handle.net/10092/5723.

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Phenolic content, o-diphenol oxidase activity, flour colour and bread crumb colour have been examined for flour streams from a commercial flour mill and in flours and wholemeals of a number of New Zealand wheat cultivars. Phenolic content and o-diphenol oxidase activity varied significantly both between milling flour streams and between cultivars. Flour and bread crumb colour correlated significantly with phenolic content and o-diphenol oxidase activity in the milling flour streams. A similar relationship was also observed between o-diphenol oxidase activity and the colour of flour and bread p
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Waller, Hazel. "Determination of phenolic compounds using hydroxylase enzymes and chemiluminescence detection." Thesis, University of Huddersfield, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.411892.

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Mullins, Alastair Patrick. "The interaction of metal ions with naturally occuring phenolic compounds." Thesis, University of Reading, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306807.

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Pascoal, Andreia Sofia do Cabo. "Quantification and characterization of the phenolic compounds of kenaf leaves." Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/11002.

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Dissertation for the Master Degree in Technology and Food Security<br>In the food industry is necessary to bring new ways to improve the taste and quality of food and add health benefits for the consumer, some herbs and plants are a good natural source of antioxidants having the ability to protect the human system from many chronicle diseases, such as Parkinson and inflammatory processes. Combining these two worlds there is a way to acquire a new product. To know if the plant chosen is suitable to be a future add to a certain food it’s necessary to study the components of the plant and determ
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Ballard, Tameshia Shaunt'a. "Optimizing the Extraction of Phenolic Antioxidant Compounds from Peanut Skins." Diss., Virginia Tech, 2008. http://hdl.handle.net/10919/28349.

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Peanut skins are a low-value byproduct of peanut blanching operations. They have been shown to contain significant levels of phenolic compounds with demonstrated antioxidant properties. The effects of two types of extraction methods: solid-liquid extraction (SLE) and microwave-assisted extraction (MAE) on the recovery of phenolic compounds from peanut skins were investigated. Response surface methodology was used to optimize extraction conditions based on total phenolic content (TPC), ORAC (oxygen radical absorbance capacity) activity and <i>trans</i>-resveratrol content. The protective effect
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Reed, Kyle Andrew. "Identification of Phenolic Compounds from Peanut Skin using HPLC-MSn." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/30160.

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Consumers view natural antioxidants as a safe means to reduce spoilage in foods. In addition, these compounds have been reported to be responsible for human health benefits. Identification of these compounds in peanut skins may enhance consumer interest, improve sales, and increase the value of peanuts. This study evaluated analytical methods which have not been previously incorporated for the analysis of peanut skins. Toyopearl size-exclusion chromatography (SEC) was used for separating phenolic size-classes in raw methanolic extract from skins of Gregory peanuts. This allowed for an enhanced
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Osadolor, Osayomwanbor Osahon. "Understanding the fate of selected phenolic compounds in anaerobic microcosms." Thesis, Queen's University Belfast, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.546407.

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Alnusaire, Taghreed Stum. "The potential for wheat roots in phytoremediation of phenolic compounds." Thesis, Bangor University, 2016. https://research.bangor.ac.uk/portal/en/theses/the-potential-for-wheat-roots-in-phytoremediation-of-phenolic-compounds(f6f6c65f-8ca5-4a5d-a011-ecd4bd3e3afa).html.

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Soil pollution is a global problem, resulting in a major international research effort using bioremediation technology to exploit plant and microorganism in the removal of contaminants. Phenolic compounds are major pollutants from industrial effluents and consequently are present in many soil and water systems throughout the world. Phytoremediation studies in soil contaminated with phenolic compounds are a challenge. The rhizosphere is an extremely dynamic zone, both spatially and temporally. In order to understand the complex rhizoremediation processes (including root-microbe reactions), ther
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Ardid, Ruiz Andrea. "Phenolic compounds as modulators of leptin signalling pathway in peripheral tissues." Doctoral thesis, Universitat Rovira i Virgili, 2018. http://hdl.handle.net/10803/664719.

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L’obesitat és una patologia àmpliament estesa per tot el món i un dels principals factors relacionats amb altres malalties cròniques. Les teràpies convencionals utilitzades per prevenir o pal·liar l’obesitat, basades en l’exercici i en la reducció del consum d’aliments molt energètics, són inefectives. En aquest sentit, l’ús de compostos bioactius com són els polifenols, metabòlits secundaris de les plantes amb un ampli espectre d’efectes beneficiosos per la salut, es presenta com a una estratègia innovadora per combatre l’obesitat. La leptina és una hormona que es secreta proporcionalment
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