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Dissertations / Theses on the topic 'Phenolic acids'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Amombo, Noa Francoise Mystere. "Crystal engineering of selected phenolic acids." Thesis, Cape Peninsula University of Technology, 2014. http://hdl.handle.net/20.500.11838/734.

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Thesis submitted in fulfilment of the requirements for the degree Master of Technology: Chemistry in the Faculty of Applied Science at the CAPE PENINSULA UNIVERSITY OF TECHNOLOGY 2014<br>Crystal engineering based upon acid: base compounds have been studied in this thesis. Selected phenolic acids such as: vanillic acid (VA), phenylacetic acid (PAA), 4-hydroxyphenylacetic acid (HPAA), 3-chloro-4-hydroxyphenylacetic acid (CHPAA), caffeic acid (CFA), p-coumaric acid (pCA), trans-ferulic acid (tFER), 2-phenylpropionic acid (PPA) and 2-phenylbutyric acid (PBA) were the main compounds investigated. T

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Poquet, Laure. "Metabolism and effects of dietary phenolic acids." Thesis, University of Surrey, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.504944.

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Ferulic acid is a secondary metabolite usually found as esters in plants and dihydrocaffeic acid results from the microbial metabolism of flavonoids and of caffeic acid, both widely distributed in food. Even though ferulic acid and flavonoids have been proposed to exert several beneficial effects on health, their in vivo activities could partly result from their microbial metabolites and strongly depend on their bioavailability. The absorption and metabolism of phenolic acids were studied in vitro with a model for the colonic epithelium composed of absorptive and mucus secreting cells, ex vivo

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3

Lal, Priya Kumari. "Maternal prenatal consumption of bioflavonoids and phenolic acids and risk of childhood brain cancer." Columbus, Ohio : Ohio State University, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1080569687.

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Thesis (Ph. D.)--Ohio State University, 2004.<br>Title from first page of PDF file. Document formatted into pages; contains xvii, 274 p.; also includes graphics (some col.). Includes abstract and vita. Advisor: J. Schwartzbaum, School of Public Health. Includes bibliographical references (p. 171-203).

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4

Yeung, Shing Joseph. "Role of mycophenolic acid in kidney transplantation." Click to view the E-thesis via HKUTO, 2004. http://sunzi.lib.hku.hk/hkuto/record/B31981860.

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5

Sorour, Noha. "Lipase-catalyzed synthesis of phenolic lipids in solvent-free medium using selected edible oils and phenolic acids." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=97003.

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The enzymatic synthesis of phenolic lipids (PLs) in solvent-free medium (SFM), by transesterification of flaxseed and fish liver oils with selected phenolic acids was investigated, using Candida antarctica lipase as the biocatalyst. The enzymatic synthesis of phenolic lipids from flaxseed oil was optimized in terms of water activity, agitation speed, enzyme and phenolic acid concentrations. Increasing the water activity of the flaxseed oil reaction mixture from 0.18 to 0.38 resulted in a significant increase in the bioconversion yield from 62 to 77%. The highest enzymatic activity (178 nmol of

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Al-Hadhrami, Mohamed N. (Mohamed Nasser). "Degradation of Phenolic Acids by Azotobacter Species Isolated from Sorghum Fields." Thesis, University of North Texas, 1989. https://digital.library.unt.edu/ark:/67531/metadc501189/.

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Sorghum plants excrete phenolic acids which reduce subsequent crop yields. These acids accumulate in field soil by combining with soil and clay particles to form stable complexes which remain until degraded by bacterial metabolism. The amount of phenolic acids in soil samples were obtained by gas chromatography measurements, while Azotobacter populations were obtained by plate counts in 40 sorghum field samples from Denton County, Texas. One can conclude that increasing the Azotobacter population in the soil increased the degradation rate of phenolic acids proportionally. It is proposed that s

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7

Patel, Chirag G. "The pharmacokinetics and pharmacodynamics of mycophenolic acid in kidney transplant recipients /." View online ; access limited to URI, 2006. http://0-wwwlib.umi.com.helin.uri.edu/dissertations/fullcit/3239911.

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8

Mothapo, Mmaphefo Patricia. "Comparative evaluation of three fundamentally different analytical methods antioxidant activity determination with reference to bush tea (anthrixia phylicoides." Thesis, University of Limpopo, 2016. http://hdl.handle.net/10386/1517.

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Thesis (M.Sc. (Chemistry)) -- University of Limpopo, 2016<br>In this study, antioxidant activity methodologies were evaluated in terms of analytical performances. The total antioxidant activity from Athrixia phylicoides leaves (Bush tea) determined using 2,2-diphenyl-1-picrylhydrazyl radical scavenging (DPPH•) method, cupric ion reducing power (CUPRAC) method and cyclic voltammetry (CV). Folin-Ciocalteu method was used to quantify total phenolic content (TPC) in Athrixia phylicoides leaves. The influence of chemical and physical parameters on the total phenolic content and antioxidant activity

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Khoddami, Ali. "Phenolic Compounds in Grains of Australian-Grown Sorghums: Quantitative Analyses including Impacts of Malting and Effects on Broiler Nutrition." Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/14985.

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Grain sorghum (Sorghum bicolor) is one of the most important food and animal feed crops in arid and semi-arid regions of the world. Sorghum grain is rich in starch and contains many functional health-promoting compounds including B-group vitamins, vitamin E and a broad range of phenolics. There is increasing interest internationally to extend the commercial use of sorghum grain as an affordable but nutritious source of animal feed and as a functional food. The utilisation of energy by broiler chickens offered sorghum-based diets seems inadequate due to various factors such as kafirin, phytate

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Yeung, Shing Joseph, and 楊誠. "Role of mycophenolic acid in kidney transplantation." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B31981860.

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11

Williams, Jeffrey Douglas. "The flavonoids and phenolic acids of the genus Silphium and their chemosystematic and medicinal value." Thesis, View online, 2006. http://www.lib.utexas.edu/etd/d/2006/williamsj92964/williamsj92964.pdf#page=3.

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Thesis (Ph. D.)--University of Texas at Austin, 2006.<br>Includes bibliographical references (p. 188-194). Also available via the World Wide Web: http://www.lib.utexas.edu/etd/d/2006/williamsj92964/williamsj92964.pdf#page=3

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12

Magnoumba, Legnanga Magalli Marcelline. "The trapping of methylglyoxal by phenolic acids : effect on antioxidant and antibacterial activity." Diss., University of Pretoria, 2017. http://hdl.handle.net/2263/65835.

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Methylglyoxal (MGO) is a reactive carbonyl species found in Manuka honey reported to cause advanced glycation end products (AGE) formation. AGE’s increase the risk for hyperglycaemia resulting in neuropathy, arteriosclerosis, retinopathy and Alzheimer’s disease. Phenolic acids such as pyrogallol (PY) are known to trap MGO, lessening the harmful effects of MGO as an AGE precursor. However, MGO is also a very effective antibacterial agent therefore; its trapping could have negative side effects. Manuka honey contains both phenolic acids such as gallic acid (GA), caffeic acid (CA) as well as MGO

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13

Kerimi, Asimina. "Exploring mechanisms of action of flavonoids and phenolic acids on pathways of lipid metabolism." Thesis, University of Leeds, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.578663.

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Epidemiological studies- indicate an association between the consumption of a 'diet rich in polyphenols and several health benefits. As diabetes and other lipid associated diseases are now reaching menacing proportions worldwide, the need for the development of cost-efficient prevention strategies effective at the population level becomes more essential than ever. Studies in the biological effects of polyphenols are now starting to include their hypoglycaemic and hypolipidemic properties and to investigate potential mechanisms through which they may exert their actions. The focus of the presen

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14

De, Paula Rosanna. "Effect of pasta processing on physicochemical properties of barley β-glucan and phenolic acids". Doctoral thesis, Università degli studi del Molise, 2014. http://hdl.handle.net/11695/66244.

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Il crescente interesse nella correlazione tra alimentazione e salute ha indotto la comunità scientifica ad un maggior impegno nel campo della ricerca di alcune sostanze dalle ri-conosciute proprietà salutistiche (phytochemicals), naturalmente presenti in una vasta gamma di prodotti di interesse agro-alimentare. I cereali in genere, nonché i prodotti da essi derivati, sono tra gli alimenti più idonei a veicolare composti bioattivi (phytochemicals) come ad esempio β-glucani e composti fenolici. Evidenze scientifiche hanno dimostrato, infatti, che β-glucani e acidi fenolici possono avere import

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15

Skoglund, Maria. "Phenolic compounds in oats : effects of steeping, germination and related enzymes /." Uppsala : Dept. of Food Science, Swedish University of Agricultural Sciences, 2008. http://epsilon.slu.se/200802.pdf.

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16

Bergvinson, David. "Role of phenolic acids in maize resistance to the European corn borer, Ostrinia nubilalis (Huebner)." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/7690.

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Host plant resistance of maize, Zea mays L., to the European corn borer (ECB), Ostrinia nubilalis Hubner, has been largely attributed to the hydroxamic acid DIMBOA. However, DIMBOA does not consistently account for observed resistance in both field and greenhouse environments. It was hypothesized that phenolic acids, a major secondary metabolite in plants, make an important contribution to resistance, through cell wall carbohydrate complexes. Preliminary studies incorporating ferulic acid into the meridic diet of the ECB did not show any adverse effects until 10 mg/g, a dosage that is approxim

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17

Zhang, Chenzhu, and 张辰珠. "The effects of rapamycin and mycophenolic acid on inflammatory and fibrotic processes in the pathogenesis of lupus nephritis: animal and in vitro studies." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B45898935.

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18

Gillard, Conrad. "A novel process for the recovery of phenolic compounds from olive mill wastewater." Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/15964.

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Requirements for the treatment of wastewater have grown increasingly stringent in recent years, while industrial processes face increasing competition. As a result, there is a great demand for the development of processes that not only treat wastewater, but convert it into value added products. In this thesis, a new process of this nature is proposed. Specifically, a two-stage process is conceived to treat olive mill wastewater (OMW), and produce a concentrated stream of phenolic compounds. The primary pollutants found in OMW are phenolic acids and other phenolic compounds. These pollutants

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Johnsson, Pernilla. "Phenolic compounds in flaxseed : chromatographic and spectroscopic analyses of glucosidic conjugates /." Uppsala : Institutionen för livsmedelsvetenskap, Sveriges lantbruksuniv, 2004. http://epsilon.slu.se/9717372.pdf.

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20

fadhil, ali abd al-karim alkarim. "Reversed-phase and surfactant modified reversed-phase high and ultra-high performance liquid chromatography of phenolic and aliphatic carboxylic acids." Miami University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=miami1574428923192499.

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21

Morton, Lincoln William. "The role of dietary phenolic compounds in the detoxification of reactive nitrogen species." University of Western Australia. Dept. of Medicine, 2003. http://theses.library.uwa.edu.au/adt-WU2003.0026.

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[Truncated abstract. Please see the pdf format for the complete text.] Interest in the role of peroxynitrite in the pathogenesis of atherosclerosis has increased due to many in vitro studies which have demonstrated its potent oxidising and nitrating capability and immunohistochemical staining studies which demonstrate nitration of tyrosine in vivo. It is frequently suggested that the production of nitric oxide and superoxide at sites of inflammation implicates peroxynitrite as the major damaging reactive nitrogen species in vivo. Evidence for a role for peroxynitrite is often demonstrated by

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22

Paracatu, Luana Chiquetto [UNESP]. "Ácido cafeico e seus ésteres: inibição do burst oxidativo de neutrófilos e efeito anti-Helicobacter pylori." Universidade Estadual Paulista (UNESP), 2012. http://hdl.handle.net/11449/93126.

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Made available in DSpace on 2014-06-11T19:26:19Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-06-29Bitstream added on 2014-06-13T19:25:33Z : No. of bitstreams: 1 paracatu_lc_me_arafcf.pdf: 657634 bytes, checksum: 11ed69514067f35e0f7dba9e2f7ec13c (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Universidade Estadual Paulista (UNESP)<br>A ação patogênica do Helicobacter pylori envolve a colonização do trato gastrointestinal e a produção de EROs por neutrófilos atraídos e ativados pelo agente da infecção. A reação mediada pelos PMN é, todavia, ineficaz pa

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23

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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Amann, Laura. "Development and Validation of an Analytical Method for Phenolic Acid Extraction from Cereals and Quantification using HPLC-UV." Thesis, Linnéuniversitetet, Institutionen för kemi och biomedicin (KOB), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-77227.

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Cereals are rich in phenolic acids, a group of secondary plant metabolites that are associated with reduced risk of chronic diseases. The objective was to develop and internally validate a method for extraction and quantification of phenolic acids in cereals using HPLC-UV and to apply this method for quantification of the content of phenolic acids in several species of Swedish cereals. Different procedures for extraction of phenolic acids from cereal grains using acid or base hydrolysis with and without subsequent enzymatic treatment were tested. Both the extraction procedure and the chromatog

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Maleckienė, Rūta. "Rausvažiedės ežiuolės (Echinacea Purpurea (L.) Moench) ekstraktų, gautų skirtingais metodais, palyginimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2008. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2008~D_20080626_143812-69618.

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Rausvažiedė ežiuolė (Echinacea purpurea (L.) Moench) apibūdinama kaip priemonė skatinanti medžiagų apykaitą; stimuliuojanti metabolizmo pakitimus ir ląstelių natūralią gynybą esant lėtinėms ir ūmioms ligoms; antiseptikas; dezinfekuojantis žaizdas agentas; vaistas. Darbo tikslas buvo atlikti fenolinių junginių analizę rausvažiedės ežiuolės (Echinacea purpurea (L.) Moench) ekstraktuose, gautuose skirtingais metodais, naudojant spektrofotometrinį metodą ir efektyviąją skysčių chromatografiją. Darbo uždaviniai buvo optimizuoti ekstrakcijos sąlygas (maceracijos metodu) įvertinant skirtingas metanol

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Paracatu, Luana Chiquetto. "Ácido cafeico e seus ésteres : inibição do "burst" oxidativo de neutrófilos e efeito anti-Helicobacter pylori /." Araraquara : [s.n.], 2012. http://hdl.handle.net/11449/93126.

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Orientador: Luiz Marcos da Fonseca<br>Banca: Cibeli Bonacorsi<br>Banca: Valdecir Farias Ximenes<br>Resumo: A ação patogênica do Helicobacter pylori envolve a colonização do trato gastrointestinal e a produção de EROs por neutrófilos atraídos e ativados pelo agente da infecção. A reação mediada pelos PMN é, todavia, ineficaz para eliminar o H. pylori e as EROs contribuem para a lesão tecidual e desenvolvimento de gastrites e úlcera péptica. O ácido cafeico é um dos mais importantes compostos fenólicos, e apresenta diferentes propriedades biológicas, entre elas antioxidante e antimicrobiana. O o

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Michelin, Daniele Carvalho. "Estudo químico-farmacológico de Operculina macrocarpa (L.) urb. (Convolvulaceae) /." Araraquara : [s.n.], 2008. http://hdl.handle.net/11449/102459.

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Resumo: Operculina macrocarpa (L.) Urb., Convolvulaceae, popularmente conhecida como batata-de-purga ou jalapa, é utilizada pela população como laxante e no tratamento da leucorréia. O objetivo deste trabalho foi realizar o controle de qualidade da droga vegetal, otimizar o processo extrativo desta espécie, avaliar a atividade laxante e antioxidante da raiz desta planta, realizar ensaios toxicológicos e ainda caracterizar fitoquimicamente a espécie por CLAE (Cromatografia Líquida de Alta Eficiência) e EM (Espectrometria de Massas). Foram realizados testes farmacopéicos de controle de qualidade

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Kurth, Caroline [Verfasser], Georg [Akademischer Betreuer] Pohnert, and Rainer [Akademischer Betreuer] Beckert. "Sulfated phenolic acids as readily activatable storage forms of antifouling agents in marine plants / Caroline Kurth. Gutachter: Georg Pohnert ; Rainer Beckert." Jena : Thüringer Universitäts- und Landesbibliothek Jena, 2015. http://d-nb.info/1077478208/34.

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Kheder, Fadi. "Production et purification d'acide férulique estérases. Application à la synthèse d'esters phénoliques." Thesis, Vandoeuvre-les-Nancy, INPL, 2007. http://www.theses.fr/2007INPL075N/document.

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L’induction de la synthèse d’une acide férulique estérase (AFE) a été étudiée chez Streptomyces ambofaciens ATCC 23877. L’activité la plus élevée a été détectée en présence de son de blé désamidonné ou de xylane d’avoine (0,22, 0,21 mU/mg protéine, respectivement). Des productions d’AFE en bioréacteur ont également été réalisées en utilisant 1% (p/v) de son de blé comme inducteur. Le niveau de production de l’AFE a été trois fois plus important en bioréacteur qu’en fiole d’Erlenmeyer. L’AFE de Streptomyces ambofaciens ATCC 23877 et celle de Humicola sp., présente dans un mélange enzymatique co

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Jardini, Fernanda Archilla. "Avaliação da atividade antioxidante da romã (Punica granatum, L.) - participação das frações de ácidos fenólicos no processo de inibição da oxidação." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/9/9131/tde-30062008-163119/.

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Os antioxidantes de origem natural têm importância na área de alimentos, pois podem representar uma alternativa de substituição aos antioxidantes sintéticos. Os compostos fenólicos, presentes nos vegetais, desempenham importância na inibição da oxidação, A romã (Punica granatum, L.) é rica em compostos fenólicos como as antocianinas, flavonóides e ácidos fenólicos. Avaliou-se a atividade antioxidante da polpa e semente de romãs plantadas no Brasil (Pernambuco), e foi feita a obtenção dos extratos e frações de ácidos fenólicos da fruta, que foram submetidos aos testes de co-oxidação de substrat

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Strapcová, Zuzana. "Chemická a senzorická charakterizace ciderů vyrobených z odrůd jablek charakteristických pro ČR." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2019. http://www.nusl.cz/ntk/nusl-401939.

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This master thesis deals with the investigation of selected chemical and sensory characteristics of ciders, which were made from four selected apple varieties. The theoretical part describes the chemical composition of apples, cider, the technology of production and production in the world. The next section describes the analytical methods used to determine chemical characteristics not only in ciders but also in other alcoholic beverages. The experimental part focuses on the determination of chemical characteristics such as the content of organic acids, carbohydrates, total phenolic content, a

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Spáčil, Zdeněk. "Mass Spectrometry of Biologically Active Small Molecules : Focusing on polyphenols, alkaloids and amino acids." Doctoral thesis, Stockholms universitet, Institutionen för analytisk kemi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-33233.

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The foci of this dissertation are on advanced liquid chromatography (LC) separation and mass spectrometry (MS) techniques for the analysis of small bioactive molecules. In addition to discussing general aspects of such techniques the results from analyses of polyphenols (PPs), alkaloids and amino acids published in five appended studies are presented and discussed. High efficiency and well understood principles make LC the method of choice for separating analytes in many kinds of scientific investigations. Moreover, when LC is coupled to an MS instrument, analytes are separated in two stages:

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Ndolo, Victoria Uchizi. "Characterisation of chemical components in manually isolated aleurone and associated layers from maize, wheat and barley kernels." Elsevier, 2013. http://hdl.handle.net/1993/30914.

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Health benefits related to consumption of whole grains have been attributed in part to phytochemical and micronutrient composition. Understanding the composition, structure and distribution of these components in different cereal grains is of potential importance in aiding the selection of whole grains and their processed fractions for inclusion in the diet, and as ingredients in development of new food products. The aim of this research was to characterise the chemical components in the botanical fractions of yellow corn, barley, wheat. Manual separation, a tedious and laborious technique tha

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Vera, Krimer Malešević. "Fenolni potencijal uljanih pogača." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2016. http://www.cris.uns.ac.rs/record.jsf?recordId=101055&source=NDLTD&language=en.

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U okviru disertacije ispitana je mogućnost eksploatacije nusproizvoda (nastalih tokom procesa hladnog presovanja ulja) kao izvora prirodnih fenolnih kiselina. Odabir je obuhvatio uzorke uljane tikve, crnog kima, lana i nara. Radi oslobađanja vezanih fenolnih kiselina i u cilju procene njihovog ukupnog sadržaja i distribucije (u čvrstim uzorcima), primenjena je alkalna hidroliza sa dodatkom L-askorbinske kiseline i EDTA. Dobijeni rezultati pokazuju da se sve analizirane pogače mogu se koristiti za dobijanje vrednih fenolnih kiselina, pri čemu raspodela fenolnih kiselina zavisi od vrste uljane p

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Jardini, Fernanda Archilla. "Atividade dos compostos fenólicos antioxidantes da romã (Púnica granatum, L.) -- avaliação in vivo e em culturas de células." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/9/9131/tde-31052010-150831/.

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Os radicais livres são formados constantemente em nosso organismo, e em quantidades controladas desempenham alguns papéis fisiológicos. Entretanto, sua presença em quantidades acima daquelas aceitáveis passa a ser um fator de risco para funcionamento adequado do organismo. Muitas doenças crônicas degenerativas têm sua origem no desequilíbrio do estado redox. Apesar de possuir um sistema de proteção antioxidante endógeno, o organismo pode ser beneficiado pela presença de compostos antioxidantes exógenos, como os compostos fenólicos encontrados em alguns alimentos. A romã (Punica granatum, L) é

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Fukuji, Tatiana Shizue. "Propostas metodologicas para componentes em matrizes alimenticias, alimentos enriquecidos e contaminantes utilizando eletroforese capilar acoplada a espectrometria de massas e detecção UV/VIS." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/46/46136/tde-28032012-100624/.

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O trabalho envolve o desenvolvimento de métodos para análise de alimentos visando a determinação de ácidos fenólicos em frutas, ácido fólico em farinhas enriquecidas e corantes Sudan em produtos de pimenta utilizando eletroforese capilar nos modos de detecção UV e MS. A separação de dez ácidos fenólicos (ácidos clorogênico, siríngico, p-cumárico, benzóico, p-hidroxibenzóico, ferúlico, vanílico, cafeico, gálico e protocatecuico) foi obtida por eletroforese capilar de zona (CZE). Um eletrólito composto de 50 mmol L-1 de tetraborato e 7,5% metanol (v/v) permitiu a separação em linha de base dos d

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Camargo, Adriano Costa de. "Hurdles and potentials in value-added use of peanut and grape by-products as sources of phenolic compounds." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/11/11141/tde-09112016-171820/.

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Recent studies have demonstrated that peanut and grape processing by-products may be richer sources of bioactive compounds as compared to their original raw material and feedstock; however, before their application as a source of nutraceuticals or in the prevention of lipid oxidation in food systems, certain technological challenges have to be addressed. This study discusses recent advances in the application of plant food processing by-products as sources of phenolic compounds with special emphasis on the profiling and screening of phenolics using high-performance liquid chromatography-mass s

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Comunian, Talita Aline. "Simultaneous encapsulation of echium (Echium Plantagineum L.) seed oil, phytosterols and phenolic compounds: characterization and application of microcapsules." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/74/74132/tde-23022018-135021/.

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The consumption of omega-3 fatty acids and phytosterol promotes the reduction of cholesterol and triacylglycerol levels. However, such compounds are susceptible to oxidation, which hampers their application. First, the aim of this work was to encapsulate echium oil (Echium plantagineum L.), source of omega-3 fatty acids, with hydrophilic phenolic compounds (sinapic acid and rutin) by double emulsion followed by complex coacervation in order to evaluate the best hydrophilic phenolic compound. In this case, sinapic acid showed better performance as antioxidant. Then, the second objective of this

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Reddivari, Lavanya. "Influence of genetic variability on specialty potato functional components and their effect on prostate cancer cell lines." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1330.

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Michelin, Daniele Carvalho [UNESP]. "Estudo químico-farmacológico de Operculina macrocarpa (L.) urb. (Convolvulaceae)." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/102459.

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Made available in DSpace on 2014-06-11T19:32:09Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-01-28Bitstream added on 2014-06-13T19:02:29Z : No. of bitstreams: 1 michelin_dc_dr_arafcf.pdf: 699909 bytes, checksum: e7f0055cf8223c3a7b3263cc9b8380ac (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Universidade Estadual Paulista (UNESP)<br>Operculina macrocarpa (L.) Urb., Convolvulaceae, popularmente conhecida como batata-de-purga ou jalapa, é utilizada pela população como laxante e no tratamento da leucorréia. O objetivo deste trabalho foi realizar o contr

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Ziółkowska, Anna. "Przemiany związków fenolowych w glebach łąkowych." Rozprawa doktorska, Uniwersytet Technologiczno-Przyrodniczy w Bydgoszczy, 2019. http://dlibra.utp.edu.pl/Content/1245.

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Celem badań niniejszej pracy było określenie roli związków fenolowych w procesach przekształceń materii organicznej gleb łąkowych, prowadzących do powstania substancji humusowych<br>The aim of the research of this dissertation has been to determine the role of phenolic compounds in the processes of transformations of organic matter of meadow soils leading to the formation of humus substances

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Kamandulis, Mintautas. "Flavonoidų ir fenolinių rūgščių analizė kanadinės jakšūnės Desmodium canadense (L.) DC. žolėje." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2006. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2006~D_20060706_143036-52316.

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Plants have many useful substances – and one of them is flavonoids with other phenolic compounds. This is a very big group of biological active compounds. Flavonoids have been referred to as "nature's biological response modifiers" because of their ability to modify the body's reaction to other compounds such as allergens, viruses, and carcinogens. They show anti-allergic, anti-inflammatory, and anti-cancer activity. In addition, flavonoids act as powerful antioxidants, providing remarkable protection against oxidative and free radical damage. As a result, consumers and food manufacturers have

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Gaivelytė, Kristina. "Šermukšnio (Sorbus L.) genties augalų fenolinių junginių tyrimas." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140904_150010-61599.

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Sorbus L. gentis yra plačiai paplitusi pasaulyje. Šermukšnio genties augalų augalinės žaliavos fitocheminė sudėtis tiriama pasaulio mokslininkų, tačiau duomenys apie galimą fenolinių junginių įvairavimą yra nepakankami. Siekiant ištirti Lietuvoje natūraliai augančių ir auginamų kolekcijose šermukšnių (Sorbus L.) rūšių ir veislių lapų, žiedų ir vaisių flavonoidų ir fenolinių rūgščių kokybinės ir kiekinės sudėties įvairavimą, optimizuota efektyviosios skysčių chromatografijos (ESC) metodika. Ištirta paprastųjų šermukšnių (S. aucuparia L.) lapų, žiedų ir vaisių ėminių flavonoidų ir fenolinių rūgš

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Lima, Fabíola Aliaga de 1984. "Estudo da biotransformação da farinha de centeio por tratamento enzimático e avaliação da bioacessibilidade de ácidos fenólicos pelo modelo de digestão 'in vitro' e de absorção por células intestinais Caco-2." [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/256639.

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Orientador: Gabriela Alves Macedo<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos<br>Made available in DSpace on 2018-08-27T13:41:19Z (GMT). No. of bitstreams: 1 Lima_FabiolaAliagade_D.pdf: 3830264 bytes, checksum: c4a5b890059ac6893391ad89b28572c4 (MD5) Previous issue date: 2015<br>Resumo: Os ácidos fenólicos possuem propriedades biológicas que desempenham ação antioxidante, anti-inflamatória, antiproliferativa e antimicrobiana. Porém, esses fenólicos de cereais integrais podem ser difíceis de serem absorvidos totalmente pelo organismo, pois estã

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Vaitūnaitytė, Malvina. "Fenolinių junginių kokybinės ir kiekybinės sudėties įvairavimo šermukšnių (S. aucuparia l.) lapuose ir žieduose tyrimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140630_134222-34665.

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Tyrimo objektas ir metodai: Sorbus L. genties augalo S. aucuparia L. lapų ir žiedų tyrimas. Bendras fenolinių junginių kiekis paprastojo šermukšnio augalinėse žaliavose nustatytas UV spektrofotometriniu metodu, fenolinės rūgštys ir flavonoidai nustatyti ESC metodu. Darbo tikslas: nustatyti S. aucuparia L. lapuose ir žieduose esančius fenolinius junginius, jų kiekinės sudėties įvairavimą augalo vegetacijos metu ir augalinių žaliavų (lapų ir žiedų) laikymo metu. Darbo uždaviniai: Surinkti ir susisteminti literatūros duomenis apie Sorbus aucuparia L., paprastojo šermukšnio augalinių žaliavų chemi

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Oliveira, Daniela Moura de. "Estudo de biodisponibilidade de compostos fenólicos do chá mate (Ilex paraguariensis)." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/6/6138/tde-23052013-102833/.

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Introdução: O estudo da ação biológica de compostos bioativos e de nutrientes, a fim de que se possa explicar a relação entre o consumo de alimentos e a redução do risco de doenças, é uma das áreas que tem aplicação direta com a saúde pública. A erva mate (Ilex paraguariensis) é uma planta rica em compostos fenólicos (ácidos clorogênicos), extensivamente metabolizados após a ingestão. O conhecimento detalhado sobre os compostos formados pela metabolização dos mesmos, concentrações e tecidos-alvo é fundamental para o completo esclarecimento sobre os mecanismos de ação envolvidos. Objetivo: Ava

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Jelena, Pejin. "Ispitivanje sadržaja i antioksidativne aktivnosti fenolnih kiselina u toku proizvodnje slada i piva." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2009. https://www.cris.uns.ac.rs/record.jsf?recordId=71284&source=NDLTD&language=en.

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Cilj istraživanja doktorske disertacije je bio da se ukonitnuitetu ispita sadržaj ukupnih fenola, fenolnih kiselina ianitoksidativna aktivnost (antiradikalska aktivnost na DPPH ihidroksil radikale) u toku proizvodnje slada i piva (u ječmu,namočenom ječmu, zelenom sladu, sladu, sladovini, ohmeljenojsladovini, sladovini tokom fermentacija, mladom pivu i pivu)proizvedenih od tri priznate sorte pivskog ječma: NS 525, NS565 i NS 583.Sadržaj ukupnih fenola u uzorcima ječma je bio: NS 525 -0,76; NS 565 - 0,75 i NS 583 - 0,70 mg GAE/g suve materije.Sadržaj ukupnih fenola u svim proizvednim sladovima (

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Dagmey, Aurélien. "Enrichissement d’huiles alimentaires riches en acides gras polyinsaturés, par des composés phénoliques d’origine naturelle, afin de les protéger de la peroxydation lipidique, en vue d’une encapsulation pour augmenter la durée de conservation de ces huiles." Thesis, Compiègne, 2020. http://bibliotheque.utc.fr/EXPLOITATION/doc/IFD/2020COMP2553.

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Les acides linoléique (LA) et α-linolénique (ALA) sont deux acides gras polyinsaturés. Ils sont indispensables à l’Homme car nous sommes incapables de les synthétiser in situ. Ces deux acides gras sont les représentants des oméga-6 (LA) et oméga-3 (ALA). Bien qu’ils soient indispensables et donc nécessaires, l’enjeu du ratio oméga-6/oméga-3 entre ces deux familles est également important à prendre en compte dans l’alimentation. Les habitudes de consommation des Français, ces trente dernières années, ont fait évoluer la balance en défaveur des oméga-3 par rapport aux oméga-6. Or un rééquilibre

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Picoli, Junior Gilmar José [UNESP]. "Influência do glyphosate no perfil bioquímico e fisiológico de populações de azevém (Lolium multiflorum) suscetíveis e resistentes ao herbicida." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/135868.

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Grzegorzewski, Franziska Verfasser], and Lothar [Akademischer Betreuer] [Kroh. "Influence of Non-Thermal Plasma Species on the Structure and Functionality of Isolated and Plant-based 1,4-Benzopyrone Derivatives and Phenolic Acids / Franziska Grzegorzewski. Betreuer: Lothar W. Kroh." Berlin : Universitätsbibliothek der Technischen Universität Berlin, 2010. http://d-nb.info/101461970X/34.

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