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Author : Ingrid Bérenger
Publisher :
ISBN 13 :
Total Pages : 98 pages
Book Rating : 4.:/5 (491 download)
Download or read book Activité anti-radicalaire de produits cosmétiques written by Ingrid Bérenger and published by . This book was released on 2004 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Amonda Charriere
Publisher :
ISBN 13 :
Total Pages : 206 pages
Book Rating : 4.:/5 (495 download)
Download or read book Utilisation des molécules anti-radicalaires en cosmétique written by Amonda Charriere and published by . This book was released on 2003 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le stress oxydant est défini comme l'effet délétère de molécule oxydantes ou radicalaires, en particulier les espèces réactives de l'oxygène, sur les molécules et macromolécules biologiques. Dans notre monde moderne, les sources de ce stress oxydant en pleines expansions et les mauvais comportements contribuent à son augmentation. La peau, première barrière contre ces agressions est donc la plus sensible à ces radicaux. Les établissements cosmétologiques ont donc supplémentés leurs produits en actifs antioxydants pour l'aider. Ces antioxydants nombreux et variés ont fait l'objet de notre étude qui a consisté à collecter des informations sur leur structure, leur activité antioxydante ou leur utilité en photoprotection. Ce travail met en évidence certaines difficultés concernant la collecte de données, notamment la nature et teneurs en anti-oxydants des produits cosmétiques. Notre conclusion soulève le problème d'une absence de standardisation des méthodes d'évaluation des activités antioxydantes et le manque d'études in vivo. Notre étude permet de dégager trois tendances dans le développement de produits cosmétiques à propriétés anti-radicalaires: l'association de plusieurs actifs, la recherche d'actifs inducteurs de systèmes enzymatiques et l'utilisation prépondérante d'actifs issus du monde végétal.
Author : CAROLINE.. PLOTON
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (492 download)
Download or read book ETUDE COMPARATIVE DE L'ACTIVITE ANTIRADICALAIRE DE PLUSIEURS ESPECES DE RIBES EN VUE D'UNE UTILISATION COSMETIQUE written by CAROLINE.. PLOTON and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Isabelle Rustan
Publisher :
ISBN 13 :
Total Pages : 146 pages
Book Rating : 4.:/5 (489 download)
Download or read book Contribution à l'étude du pouvoir antiradicalaire de produits naturels written by Isabelle Rustan and published by . This book was released on 1996 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: LES PLANTES CONSTITUENT DES AGENTS UTILES DANS LA PROPHYLAXIE ET LE TRAITEMENT DES MALADIES DUES AUX RADICAUX LIBRES EN RAISON DE LEURS POTENTIALITES ANTIOXYDANTES. POUR EVALUER CES CAPACITES, NOUS UTILISONS UN TEST DE RESISTANCE A L'OXYDATION. IL PERMET D'AVOIR UNE APPROCHE GLOBALE DE LA CAPACITE PROTECTIVE D'UN EXTRAIT OU D'UNE SUBSTANCE (POUVOIR ANTIOXYDANT ET ANTILIPOPEROXYDANT) VIS-A-VIS D'UNE AGRESSION RADICALAIRE. DANS UN PREMIER TEMPS, NOUS EVALUONS L'INFLUENCE DE LA QUALITE DU SUBSTRAT BIOLOGIQUE (SANG) SUR LES RESULTATS AINSI QUE CELLE DE LA CONCENTRATION DE L'ECHANTILLON ANALYSE. PUIS NOUS DETERMINONS LE POUVOIR ANTIOXYDANT RELATIF DE PLANTES APPARTENANT A DIVERSES FAMILLES. CECI NOUS CONDUIT A SELECTIONNER UNE LAMIACEE D'ORIGINE MEDITERRANEENNE POUR DEFINIR, APRES FRACTIONNEMENT DE SON EXTRAIT AQUEUX, LES FRACTIONS LES PLUS ANTIOXYDANTES. NOUS TENTONS ALORS D'IDENTIFIER LES MOLECULES DE NATURE POLYPHENOLIQUE RESPONSABLES DE CETTE ACTIVITE. NOUS METTONS A PROFIT LA SENSIBILITE DU TEST POUR COMPARER LES CAPACITES ANTIOXYDANTES DE PLANTES SELON LEUR ORIGINE OU TRAITEES PAR IONISATION. IL NOUS PERMET AUSSI D'ABORDER LA RELATION ENTRE LA STRUCTURE ET L'ACTIVITE DE DIVERS AGLYCONES PHENOLIQUES ET DE CERTAINS DE LEURS HETEROSIDES
Author : Patrice André
Publisher : EDP Sciences
ISBN 13 : 2759828433
Total Pages : 382 pages
Book Rating : 4.7/5 (598 download)
Download or read book Chimie, dermo-cosmétique et beauté written by Patrice André and published by EDP Sciences. This book was released on 2023-09-21T00:00:00+02:00 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cosmétiques et chimie sont rarement associés dans l’esprit du public car la beauté est un bien naturel et un art, et la chimie une science et une technologie difficiles ! Pourtant, et depuis toujours, on réclame sans relâche des produits nouveaux, plus performants et plus sûrs, qui font appel à la recherche et à l’innovation... en ch...
Author : Juliana de Souza Alencar
Publisher :
ISBN 13 :
Total Pages : 340 pages
Book Rating : 4.:/5 (494 download)
Download or read book Antioxydants naturels et hémisynthétiques written by Juliana de Souza Alencar and published by . This book was released on 2009 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail propose la potentialisation du pouvoir antioxydant d’un produit naturel (huile de sésame) par hémisynthese et microencapsulation. Ainsi, des émulsions sèches avec une concentration élevée de sésamol (actif présent dans l’huile de sesame) ont ete developpees avec l’association saccharose/hydroxypropylmethylcellulose (HPMC) ou caseinate de sodium (SC) en utilisant les techniques d’atomisation à 120°, 150 et 180°C ou de lyophilisation. Les caractéristiques physiques telles que distribution de taille de gouttelette, morphologie de l’émulsion sèche (par microscopie électronique) et humidité résiduelle ont été évaluées; les meilleures formulations ont été obtenues avec les techniques d’atomisation, a 150° et 180°C avec SC et HPMC, respectivement. Dans un premier temps, l’évaluation de leur capacité de piégeage des radicaux superoxyde et hydroxyle a été réalisée, par Résonance Paramagnétique Electronique (RPE), et leur pouvoir réducteur des radicaux persistants en solution (1,1-diphenyl-2-picrylhydrazyle (DPPH), galvinoxyle) évalué par spectrophotométrie visible ou par RPE. Puis, des expériences sur des cultures cellulaires (fibroblastes 3T3) stressées par des concentrations physiologiques en (Fe3+ /ascorbate/H2O2), et sur des fragments de peau exposes a des rayonnements UVA/UVB ex-vivo ont permis de mettre en évidence la potentialisation du pouvoir antioxydant du sésamol dans ces formulations, constituées de microcapsules. Enfin, une étude complémentaire par calorimétrie différentielle à balayage (DSC), a mis en évidence le comportement thermique des composés, seuls ou en interaction, ainsi que la stabilité thermique de l’antioxydant incorpore dans la formulation. Il apparait clairement que les émulsions sèches préparées par la technique d’atomisation avec l’association SAC-SC protègent significativement l’activité antioxydante dans des conditions élevées de température ou de stress oxydant. La seconde partie de l’étude a consiste a obtenir a partir d’huile de sésame, une fraction hémisynthetique, adaptée a la microencapsulation par la méthode précitée, et possédant un potentiel antioxydant remarquable. Ceci a été réalisé via un greffage de la fraction saponifiable de l’huile de sésame a l’alcohol vanillique; l’activité antioxydante de cette fraction a été évaluée par des tests avec le DPPH, le désoxyribose (complexe MDA-TBA), des expériences de culture cellulaire (Fibroblastes 3T3) et de Résonance Paramagnétique Electronique. En résume, ces travaux pluridisciplinaires associant les techniques de la chimie, la physicochimie, la formulation et la biologie ont abouti au développement et à l’évaluation de nouvelles formulations contenant des dérives de l’huile de sésame, présentant une forte activité antioxydante.
Author : Ursula Jakob
Publisher : Springer Science & Business Media
ISBN 13 : 9400757875
Total Pages : 488 pages
Book Rating : 4.4/5 (7 download)
Download or read book Oxidative Stress and Redox Regulation written by Ursula Jakob and published by Springer Science & Business Media. This book was released on 2013-03-15 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many physiological conditions such as host defense or aging and pathological conditions such as neurodegenerative diseases, and diabetes are associated with the accumulation of high levels of reactive oxygen species and reactive nitrogen species. This generates a condition called oxidative stress. Low levels of reactive oxygen species, however, which are continuously produced during aerobic metabolism, function as important signaling molecules, setting the metabolic pace of cells and regulating processes ranging from gene expression to apoptosis. For this book we would like to recruit the experts in the field of redox chemistry, bioinformatics and proteomics, redox signaling and oxidative stress biology to discuss how organisms achieve the appropriate redox balance, the mechanisms that lead to oxidative stress conditions and the physiological consequences that contribute to aging and disease.
Author : Jean Martin Charcot
Publisher :
ISBN 13 :
Total Pages : 344 pages
Book Rating : 4.R/5 (5 download)
Download or read book Clinical Lectures on Senile and Chronic Diseases written by Jean Martin Charcot and published by . This book was released on 1881 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Konstantinos N. Papadopoulos
Publisher : Nova Publishers
ISBN 13 : 9781604562620
Total Pages : 320 pages
Book Rating : 4.5/5 (626 download)
Download or read book Food Chemistry Research Developments written by Konstantinos N. Papadopoulos and published by Nova Publishers. This book was released on 2008 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Food chemistry is the study of chemical processes and interactions of all biological and non-biological components of foods. The biological substances include such items as meat, poultry, lettuce, beer, and milk as examples. It is similar to biochemistry in its main components such as carbohydrates, lipids, and protein, but it also includes areas such as water, vitamins, minerals, enzymes, food additives, flavours, and colours. This discipline also encompasses how products change under certain food processing techniques and ways either to enhance or to prevent them from happening. An example of enhancing a process would be to encourage fermentation of dairy products with lactic acid; an example of a preventing process would be stopping the Maillard reaction on the surface of freshly cut Red Delicious apples whether by hand or mechanical methods. This book presents the recent research from around the world in this field.
Author : Raul Perez Galvez
Publisher : CRC Press
ISBN 13 : 1466585803
Total Pages : 232 pages
Book Rating : 4.4/5 (665 download)
Download or read book Utilization of Fish Waste written by Raul Perez Galvez and published by CRC Press. This book was released on 2013-05-21 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: The shortage of marine resources calls for the implementation of new technological processes for providing a better utilization of waste and by-products from fisheries and fish processing activities. Most of these by-products are currently used as raw materials for animal feed. It is estimated that their utilization in human foodstuffs, nutraceutic
Author :
Publisher : Elsevier
ISBN 13 : 0128163968
Total Pages : 2444 pages
Book Rating : 4.1/5 (281 download)
Download or read book Comprehensive Foodomics written by and published by Elsevier. This book was released on 2020-11-12 with total page 2444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Foodomics, Three Volume Set offers a definitive collection of over 150 articles that provide researchers with innovative answers to crucial questions relating to food quality, safety and its vital and complex links to our health. Topics covered include transcriptomics, proteomics, metabolomics, genomics, green foodomics, epigenetics and noncoding RNA, food safety, food bioactivity and health, food quality and traceability, data treatment and systems biology. Logically structured into 10 focused sections, each article is authored by world leading scientists who cover the whole breadth of Omics and related technologies, including the latest advances and applications. By bringing all this information together in an easily navigable reference, food scientists and nutritionists in both academia and industry will find it the perfect, modern day compendium for frequent reference. List of sections and Section Editors: Genomics - Olivia McAuliffe, Dept of Food Biosciences, Moorepark, Fermoy, Co. Cork, Ireland Epigenetics & Noncoding RNA - Juan Cui, Department of Computer Science & Engineering, University of Nebraska-Lincoln, Lincoln, NE Transcriptomics - Robert Henry, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, Australia Proteomics - Jens Brockmeyer, Institute of Biochemistry and Technical Biochemistry, University Stuttgart, Germany Metabolomics - Philippe Schmitt-Kopplin, Research Unit Analytical BioGeoChemistry, Neuherberg, Germany Omics data treatment, System Biology and Foodomics - Carlos Leon Canseco, Visiting Professor, Biomedical Engineering, Universidad Carlos III de Madrid Green Foodomics - Elena Ibanez, Foodomics Lab, CIAL, CSIC, Madrid, Spain Food safety and Foodomics - Djuro Josic, Professor Medicine (Research) Warren Alpert Medical School, Brown University, Providence, RI, USA & Sandra Kraljevic Pavelic, University of Rijeka, Department of Biotechnology, Rijeka, Croatia Food Quality, Traceability and Foodomics - Daniel Cozzolino, Centre for Nutrition and Food Sciences, The University of Queensland, Queensland, Australia Food Bioactivity, Health and Foodomics - Miguel Herrero, Department of Bioactivity and Food Analysis, Foodomics Lab, CIAL, CSIC, Madrid, Spain Brings all relevant foodomics information together in one place, offering readers a ‘one-stop,’ comprehensive resource for access to a wealth of information Includes articles written by academics and practitioners from various fields and regions Provides an ideal resource for students, researchers and professionals who need to find relevant information quickly and easily Includes content from high quality authors from across the globe
Author : Ismail Serageldin
Publisher : CABI
ISBN 13 : 9780851996752
Total Pages : 340 pages
Book Rating : 4.9/5 (967 download)
Download or read book Biotechnology and Sustainable Development written by Ismail Serageldin and published by CABI. This book was released on 2003 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the first scientific conference convened at the Library of Alexandria, 'Biotechnology and Sustainable Development: Voices of the South and North', which was held in Alexandria, Egypt, in March 2002, this book contains overviews of agriculture, health, ethics and the environment. It discusses how dramatic improvements in food security, health, and lifestyle could accrue to the poor people of developing countries through the applications of new technologies.
Author : Erik Matteo Prochet Widmark
Publisher :
ISBN 13 : 9780931890079
Total Pages : 163 pages
Book Rating : 4.8/5 (9 download)
Download or read book Principles and Applications of Medicolegal Alcohol Determination written by Erik Matteo Prochet Widmark and published by . This book was released on 1981-01-01 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309170435
Total Pages : 241 pages
Book Rating : 4.3/5 (91 download)
Download or read book Arsenic in Drinking Water written by National Research Council and published by National Academies Press. This book was released on 2001-11-26 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Having safe drinking water is important to all Americans. The Environmental Protection Agency's decision in the summer of 2001 to delay implementing a new, more stringent standard for the maximum allowable level for arsenic in drinking water generated a great deal of criticism and controversy. Ultimately at issue were newer data on arsenic beyond those that had been examined in a 1999 National Research Council report. EPA asked the National Research Council for an evaluation of the new data available. The committee's analyses and conclusions are presented in Arsenic in Drinking Water: 2001 Update. New epidemiological studies are critically evaluated, as are new experimental data that provide information on how and at what level arsenic in drinking water can lead to cancer. The report's findings are consistent with those of the 1999 report that found high risks of cancer at the previous federal standard of 50 parts per billion. In fact, the new report concludes that men and women who consume water containing 3 parts per billion of arsenic daily have about a 1 in 1,000 increased risk of developing bladder or lung cancer during their lifetime.
Author : Gordon M. Wardlaw
Publisher : McGraw-Hill College
ISBN 13 : 9780072344059
Total Pages : pages
Book Rating : 4.3/5 (44 download)
Download or read book Contemporary Nutrition written by Gordon M. Wardlaw and published by McGraw-Hill College. This book was released on 1999-07 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This text examines major nutrition concepts: the body's use of nutrients, diet planning throughout the life cycle, and food choices to meet nutrition goals.
Author : Hatice Atacag Erkurt
Publisher : Springer Science & Business Media
ISBN 13 : 3642118461
Total Pages : 221 pages
Book Rating : 4.6/5 (421 download)
Download or read book Biodegradation of Azo Dyes written by Hatice Atacag Erkurt and published by Springer Science & Business Media. This book was released on 2010-04-21 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: Azo dyes play an important role as coloring agents in the textile, food, and pharmaceutical industry. Due to the toxicity, mutagenicity and carcinogenicity of azo dyes and their breakdown products, their removal from industrial wastewaters has been an urgent challenge. Promising and cost-effective methods are based on their biodegradation, which is treated in this volume. The topics presented by experts in the field include: the classification of azo dyes; toxicity caused by azo dyes; aerobic and anaerobic azo dye biodegradation mechanisms; the role of bacteria, fungi, algae and their enzymes in biodegradation; the impact of redox mediators on azo dye reduction; the integration of biological with physical and chemical processes; the biotransformation of aromatic amines; reactor modelling for azo dye conversion; the biodegradation of azo dyes by immobilized bacteria and fungi; and factors affecting the complete mineralization of azo dyes.
Author : Lyonnaise des eaux-Dumez (Firm)
Publisher : American Water Works Association
ISBN 13 : 0070015597
Total Pages : 738 pages
Book Rating : 4.0/5 (7 download)
Download or read book Water Treatment Membrane Processes written by Lyonnaise des eaux-Dumez (Firm) and published by American Water Works Association. This book was released on 1996 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt: With global demand for water in the 20th century expected to increase ten-fold, this work focuses on the membrane filtration issues for drinking water.
