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In vitro diffusion of plant phenolics through the skin: A review update / Gislà ine C. Silva in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 46, N° 2 (04/2024)
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Titre : In vitro diffusion of plant phenolics through the skin: A review update Type de document : texte imprimé Auteurs : Gislà ine C. Silva, Auteur ; Rodney A. F. Rodrigues, Auteur ; Carla B. G. Bottoli, Auteur Année de publication : 2024 Article en page(s) : p. 239-261 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Barrière cutanée
Chimie analytique
Cosmétiques -- Administration par voie cutanée
Dermo-cosmétologie
Diffusion (physique)
Encapsulation
Extraits de plantes:Extraits (pharmacie)
Peau -- Soins et hygiène
PhénolsIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : Excessive skin exposure to deleterious environmental variables results in inflammation as well as molecular and cellular impairments that compromise its functionality, aesthetic qualities, and overall well-being. The implementation of topical administration of antioxidants and other compounds as a method for preventing or reversing damage is a rational approach. Numerous phenolic compounds derived from plants have demonstrated capabilities such as scavenging free radicals and promoting tissue healing. However, the primary obstacle lies in effectively delivering these compounds to the specific place on the skin, and accurately forecasting their diffusion through the skin can assist in determining the most effective tactics. Hence, this article provides a comprehensive analysis of recent literature pertaining to the in vitro skin diffusion characteristics of plant phenolics. The aim is to gain a deeper understanding of their behaviour when present in various forms such as solutions, suspensions, and formulations.
- Method : The data on plant extracts and isolated plant phenolic compounds in vitro skin diffusion assays published over the last six years were compiled and discussed.
- Results : Even though the gold standard Franz diffusion cell is the most commonly used in the assessment of in vitro plant phenolic skin diffusion profiles, a plethora of skin models and assay conditions are reported for a variety of compounds and extracts in different vehicles.
- Conclusion : The presence of numerous models and vehicles poses a challenge in creating correlations among the existing data on plant phenolic compounds. However, it is possible to draw some general conclusions regarding molecular, vehicle, and skin characteristics based on the gathered information.Note de contenu : - PLANT PHENOLICS PERMEATION PROFILE : Isolated compounds - Phenolic-rich plant extracts
- Table 1 : Micro- and nano-encapsulated plant-derived phenolic compounds diffusion assays and results
- Table 2 : Plant-derived phenolic compounds physical–chemical features and diffused amountsDOI : https://doi.org/10.1111/ics.12927 En ligne : https://drive.google.com/file/d/14y2jjLMSwGzxzO5wsSiAk_Lptn_B0n7S/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40910
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 46, N° 2 (04/2024) . - p. 239-261[article]Influence of sunscreen formulation on the transfer of mineral and organic ultraviolet filters from skin to seawater in simulated ocean bathing tests / Jennifer K. Saxe in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 45, N° S1 (10/2023)
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Titre : Influence of sunscreen formulation on the transfer of mineral and organic ultraviolet filters from skin to seawater in simulated ocean bathing tests Type de document : texte imprimé Auteurs : Jennifer K. Saxe, Auteur ; Larry Mullins, Auteur ; Randy Jones, Auteur ; Alan Lewis, Auteur ; Frank Sun, Auteur ; Kurt A. Reynertson, Auteur Année de publication : 2023 Article en page(s) : p. 84-92 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cheveux -- Soins et hygiène
Chimie analytique
Cosmétiques -- Aspect de l'environnement
Cosmétiques -- Effets de la pollution de l'eau
cosmétiques -- Produits chimiques
Eau -- Pollution
Eau de mer
Environnement -- Etudes d'impact
Formulation (Génie chimique)
Milieu marin -- Pollution
Peau -- Soins et hygiène
Produits antisolairesIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : Significant research and regulatory attention have been focussed on the potential for some ultraviolet filters (UVFs) to rinse off from beachgoers' skin into seawater leading to exposure to sea life, especially coral reefs. The amount of UVFs potentially rinsed from skin during recreational beach activities has not been well studied, leading to uncertainty about the potential magnitude of aquatic UVF exposure due to changes in sunscreen use patterns. This study quantifies rinse-off of UVFs in sunscreen from skin into synthetic seawater and identifies differences in rinse-off quantity due to formulation type with a goal of informing future modelling efforts aimed at estimating UVF exposure to sea life associated with recreational activities at the beach.
- Methods : UVF rinse-off from skin during recreation in seawater was simulated by applying eight different sunscreen products to porcine skin samples followed by three periods of shaking in synthetic seawater totalling 40 min. The rinsed mass of six UVFs – zinc oxide, titanium dioxide, avobenzone, homosalate, octisalate, and octocrylene – was determined analytically in synthetic seawater and in extractant rinsate from glassware for organic UVFs and compared among formulas.
- Results : Among the 22 UVF-formulation combinations tested, 19 resulted in less than 10% of the applied UVF rinsed from skin. All formulation-UVF combinations where the formula types were water-in-oil (reverse phase) emulsions or anhydrous resulted in 5% or less of the applied UVF rinsed to synthetic seawater. Sunscreens formulated as oil-in-water emulsions yielded higher rinse-off percentages for all UVFs tested, with a maximum of 20% rinse-off of avobenzone in one lotion.
- Conclusion : The potential for sunscreen UVF rinse-off is significantly influenced by formulation and is generally well below the prior assumed rinse-off levels used to estimate risk. Formulation consideration is therefore essential for accurate exposure models used in environmental risk assessment. Anhydrous and reverse phase (water-in-oil) sunscreen formulations tested resulted in lower UVF transfer from skin to synthetic seawater in simulated ocean bathing tests and as a result, are expected to yield lower UVF exposures to sea life. This approach can be used in predictive environmental exposure models to support ecologically safe sunscreen formulation design.Note de contenu : - Table 1 : Formulation types and measured ultraviolet filter (UVF) content for sunscreen formulations in this study DOI : https://doi.org/10.1111/ics.12901 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/ics.12901 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40253
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 45, N° S1 (10/2023) . - p. 84-92[article]Inhibitory mechanism of hexavalent chromium formation in chrome-tanned leather with combined inhibitors / Koki Ogata in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 5 (09-10/2019)
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Titre : Inhibitory mechanism of hexavalent chromium formation in chrome-tanned leather with combined inhibitors Type de document : texte imprimé Auteurs : Koki Ogata, Auteur ; Shunji Hattori, Auteur ; Koji Takahashi, Auteur Année de publication : 2019 Article en page(s) : p. 253-259 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chimie analytique
Chrome hexavalent
Inhibiteurs (chimie)
Statistique
Tannage au chromeIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The perfect inhibition of Cr6+ formation in Cr-tanned leather has been reported using combined inhibitors consisting 3(2)-t-butyl-4-hydroxyanisole (BHA), ascorbic acid (AsA), and collagen peptide (CP-9). In this study, the inhibitory mechanism of the combined inhibitors was investigated with respect to: (i) Inhibiting the conversion of Cr3' to Cr6+ by scavenging lipid radicals and peroxy radicals in free lipid of Cr-tanned leather; (ii) strengthening the reductivity within Cr-tanned leather; and (iii) stabilising Cr3+ complexes by coordination with CP-9. Electron spin resonance (ESR) of free lipid extracted from the Cr-tanned leather treated with combined inhibitors showed that free radicals considerably reduced with BHA and AsA. AsA markedly depressed peroxide value (POV), indicating strong effectiveness of the reducing action of AsA. The CP-9-added extract with 0.1 mol/L potassium phosphate buffer (pH 5.5) of the Cr-tanned leather before changing from pH5.5 to 8.0 showed that the conversion of Cr3+ to Cr6+ showed concentration-dependent inhibition, suggesting stabilisation through CP-9 coordination. Therefore, perfect inhibition of Cr6+ formation in Cr-tanned leather using combined inhibitors was concluded to be caused by the multiple inhibitory actions of BHA, AsA, and CP-9, such as radical scavenging, radical scavenger regeneration, reducing action, and Cr3+ stabilisation. Note de contenu : - MATERIALS AND METHODS : Materials - Preparation of free and bound lipids in Cr leather - ESR - Peroxide value (POV) measurements - Carbonyl value (COV) measurement - Estimation of stabilisation of Cr3+ complex with CP-9 - Analytical methods - Statistical analysis
- RESULTS : Radical scavenging action of inhibitors - Stabilisation of free Cr3+ complexEn ligne : https://drive.google.com/file/d/1LhJTnvaHNvu7PeQaURJOAhIvfRmLXZAv/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33000
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 103, N° 5 (09-10/2019) . - p. 253-259[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21222 - Périodique Bibliothèque principale Documentaires Disponible Les innombrables applications de la chromatographie bidimensionnelle en phase gazeuse / Raphaël L. Pepino in L'ACTUALITE CHIMIQUE, N° 459 (02/2021)
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Titre : Les innombrables applications de la chromatographie bidimensionnelle en phase gazeuse Type de document : texte imprimé Auteurs : Raphaël L. Pepino, Auteur ; Adrien D. Garcia, Auteur ; Jana Bockova, Auteur ; Grégoire Danger, Auteur ; Uwe J. Meierhenrich, Auteur ; Cornelia Meinert, Auteur Année de publication : 2021 Article en page(s) : p. 20-26 Note générale : Bibliogr. Langues : Français (fre) Catégories : Chimie analytique
Chromatographie en phase gazeuse
Mélanges (chimie)
Modulateur (technologie)
Séparation (technologie)Index. décimale : 543.08 Chimie analytique - Méthodes particulières Résumé : La chromatographie gazeuse monodimensionnelle (GC) est la technique de choix dans de nombreux laboratoires à travers le monde pour l’analyse de composés volatils ou semi-volatils. Toutefois, la complexité d’un grand nombre d’échantillons empêche fréquemment l’identification de tous les composés.
Afin de remédier à ce manque de résolution, plusieurs colonnes capillaires de sélectivités différentes ont été couplées pour donner naissance à la GC multidimensionnelle (MDGC), et à une approche plus récente, la GC bidimensionnelle intégrale (GC×GC). La GC×GC permet d’améliorer considérablement le pouvoir de séparation en passant d’une séparation linéaire à une séparation spatiale, ce qui constitue un avantage significatif pour l’analyse qualitative et quantitative de composés ciblés ou non ciblés.
Dans cet article sont abordées les évolutions technologiques clés de la GC×GC, sa capacité de séparation structurée comprenant l’invention de nouvelles colonnes GC, l’analyse énantiosélective, la séparation multidimensionnelle, ainsi que les nouvelles tendances pour l’identification de composés inconnus dans des mélanges complexes.Note de contenu : - Au fil des années : accroitre la résolution
- L'évolution technologique de la modulation
- Orthogonalité et séparation structurée
- Nouvelles phases stationnaires
- Le choix du détecteur
- Applications diverses et tendances actuelles
- Encadré : Schéma général de la GC X GC
- Fig. 1 : Principe de la GC X GC
- Fig. 2 : Séparation des composés d'un carburant diesel par GC X GC-TOFMS
- Fig. 3 : Exemples de liquides ioniques
- Fig. 4 : Domaines d'applications récents de la GC X GC
- Fig. 5 : Séparation énantiosélective d'acides aminés par GC X GC
- Tableau 1 : Détecteurs pouvant être utilisés en GC X GC
- Tableau 2 : Quelques exemples d'applications récentes de la GC X GCPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35120
in L'ACTUALITE CHIMIQUE > N° 459 (02/2021) . - p. 20-26[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22521 - Périodique Bibliothèque principale Documentaires Disponible Interaction of aldehyde developed from amino acids of tannerry waste in a lower-vegetable tannage an eco-friendly approach - Part 2 / James Kanagaraj in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 6 (11-12/2005)
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Titre : Interaction of aldehyde developed from amino acids of tannerry waste in a lower-vegetable tannage an eco-friendly approach - Part 2 Type de document : texte imprimé Auteurs : James Kanagaraj, Auteur ; S. Sadulla, Auteur ; G. S. Raja Kumar, Auteur ; N. K. Chandrababu, Auteur Année de publication : 2005 Article en page(s) : p. 250-256 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acacia et constituants
AldéhydesUn aldéhyde est un composé organique, faisant partie de la famille des composés carbonylés, dont l'un des atomes de carbone primaire (relié au plus à 1 atome de carbone) de la chaîne carbonée porte un groupement carbonyle.
L'aldéhyde le plus simple est le formaldéhyde (ou méthanal), aussi appelé formol lorsqu'il est en solution aqueuse.
Un aldéhyde dérive formellement d'un alcool primaire (oxydation) dont le groupement hydroxyde -OH est en bout de chaîne et se forme suite à l'enlèvement de deux atomes H d'où le nom "alcool déshydrogéné" ou aldéhyde.
Caractérisation
Chimie analytique
Colorimétrie
Croûte (cuir)On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés.
Cuirs et peaux -- Propriétés physiques
Eaux usées -- Analyse
Liqueurs de tannage
Réticulants
Tannage organique
Tannage végétalIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Fleshings obtained from the liming process were hydrolysed with a proteolytic enzyme and further broken down to the amino acid level before being used to prepare the corresponding aldehyde, which was used as a crosslinking agent.
In the present study the cross-linking agent developed was used to tan the delimed pelt. Subsequently, the leather obtained was tanned with wattle extract at various levels and the combination effect was studied. The tanning studies carried out using the cross-linking agent were discussed in detail in Part I of the paper. Details of the application of the cross-linker aldehyde and its results on pelts as well as with chrome tannage are described in Part 1 of this paper. (J. Soc. Leather Technol. Chem., 2005, 89 (1), 18.) The combination tanning studies with wattle extract at various levels are discussed in this part.Note de contenu : - Materials
- Methods
- Characterisation of cross-linking agent
- Tanning studies
- Table 1 : Characteristics of spent liquor and leather
- Table 2 : Shrinkage temperature and DSC data for the leather
- Table 3 : 1HNMR and FT-IR data
- Table 4 : Total Dissolved Solids (TDS) in various tanning effluent
- Table 5 : Colour measurements
- Table 6 : Colour difference value computed for various experiments when CA treated leather is taken as control
- Table 7 : Physical characteristics of crust leatherEn ligne : https://drive.google.com/file/d/1_VlY4UH2svTJ-6oGkxb3OFRWPiBoul2C/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39215
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 89, N° 6 (11-12/2005) . - p. 250-256[article]Internal structural changes in keratin fibres resulting from combined hair waving and stress relaxation treatments : a Raman spectroscopic investigation / A. Kuzuhara in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 38, N° 2 (04/2016)
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PermalinkPermalinkInvestigation of different pre-treatments of chromium leather shavings to improve biogas production in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 2 (Année 2020)
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PermalinkInvestigation of the interactions of cationic guar with human hair by electrokinetic analysis / Roger L. McMullen in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 43, N° 4 (08/2021)
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PermalinkInvestigation of the solubility and dispersion degree of calf skin collagen in ionic liquids / Sicong Liu in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 1 (Année 2019)
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PermalinkInvestigations on the general properties of biomass-based aldehyde tanned sheep fur for its selective post-tanning processing / Wei Ding in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 3 (Année 2021)
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PermalinkJuniper berry extract containing Anthricin and Yatein suppresses lipofuscin accumulation in human epidermal keratinocytes through proteasome activation, increases brightness and decreases spots in human skin / Kotaro Sakamoto in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 45, N° 5 (10/2023)
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PermalinkKeeping an eye on quality / G Saunders in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 192, N° 4451 (04/2002)
PermalinkLeather : A natural, high-tech material / Benjamin Autenrieth in INTERNATIONAL LEATHER MAKER (ILM), N° 43 (09-10/2020)
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PermalinkLime-free unhairing : Part 3. Influence of unhairing method on chemical, physical and mechanical properties of pelt and leather / Virgilijus Valeika in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 84, N° 4 (07-08/2000)
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PermalinkLipid-based submicron capsules as a strategy to include high concentrations of a hydrophobic lightening agent in a hydrogel / H. T. P. Nguyen in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 39, N° 4 (08/2017)
PermalinkLithium ion conduction in PVdC-co-AN based polymer blend electrolytes doped with different lithium salts / C. Subbu in INTERNATIONAL POLYMER PROCESSING, Vol. XXX, N° 4 (08/2015)
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PermalinkLong-term retinol decomposition profile and emulsion chassis & package impact to destabilization / Hoyun Kim in SOFW JOURNAL, Vol. 143, N° 11 (11/2017)
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PermalinkLow pressure ion chromatography in complex chemistry in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 85, N° 1 (01-02/2001)
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PermalinkMaleinized hyperbranched alkyd resins : structural, thermal, rheological and film properties / Jessica Duarte in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 1 (01/2024)
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PermalinkPermalinkA matched-side comparative study of the unsplit blue stock and crust leather made from uncured and pit-cured hides / Stephen H. Feairheller in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXX (Année 1975)
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PermalinkMatières plastiques. Matières à mouler aminoplastes. Détermination des matières volatiles - Norme NF EN ISO 3671 / Association Française de Normalisation (Paris) / Saint-Denis La Plaine : Association Française de Normalisation (AFNOR) (1998)
PermalinkMercury(II) determination in commercial cosmetics and local Thai traditional medicines by flow injection spectrophotometry / K. Prasertboonyai in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 38, N° 1 (02/2016)
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PermalinkMethod for quantification of oils and sebum levels on skin using the Sebumeter® / Jonathan M. Crowther in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 38, N° 2 (04/2016)
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