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Applying pectin coatings enriched with antioxidant compounds as pre-treatment for kiwi (Actinidia deliciosa) drying process / Kaliana Sitônio Eça in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 4 (07/2021)
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Titre : Applying pectin coatings enriched with antioxidant compounds as pre-treatment for kiwi (Actinidia deliciosa) drying process Type de document : texte imprimé Auteurs : Kaliana Sitônio Eça, Auteur ; Elaine Cristina Maciel Porto, Auteur ; Luciana de Siqueira Oliveira, Auteur ; Florencia CecÃlia Menegalli, Auteur Année de publication : 2021 Article en page(s) : p. 1131-1142 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antioxydants
Durée de vie (Ingénierie)
Enrobage (technologie)
Formulation (Génie chimique)
Fruits -- Revêtements protecteurs
Kiwi (fruit)
PectineLes pectines ou plus largement les substances pectiques, sont des polyosides, rattachées aux glucides. Ce sont des substances exclusivement d’origine végétale. Les pectines sont présentes en grande quantité dans les parois primaires des dicotylédones, et en particulier dans les parois végétales de nombreux fruits et légumes. Elles sont extraites industriellement des coproduits de l'industrie des jus de fruits, principalement des agrumes et en moins grande quantité des marcs de pomme.
- Composition chimique : Ce sont des polysaccharides caractérisés par un squelette d’acide α-D-galacturonique et de faibles quantités de α-L-rhamnose plus ou moins ramifiés. Le modèle généralement accepté décrit les pectines comme un enchaînement de deux structures majoritaires : une chaîne principale homogalacturonique (ou "zone lisse", dénommée HG) et une chaîne rhamnogalacturonique (ou "zone hérissée", dénommée RG).
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : One of the main drawbacks of drying fruits is the degradation of their quality by oxidative processes. In this study, antioxidant pectin coatings were prepared and applied onto kiwi slices before the drying process to evaluate their effect on drying kinetics, on maintaining nutritional quality and antioxidant capacity of the cut fruit, and during 31 days of storage. Pectin antioxidant coating formulations have been developed by adding antioxidant extracts from fruits or antioxidant acids. Uncoated dehydrated fruits and those coated with pectin without antioxidants were used as control. Convective drying was carried out, desorption isotherms (30, 50 and 60°C) and drying kinetics (50 and 60°C) were analyzed, and the obtained experimental data were adjusted to the GAB and Page models, respectively. The dried kiwi slices were evaluated for their retention of antioxidants (vitamin C and phenolic compounds), total antioxidant activity (DPPH), mechanical properties, and color. The coatings had a slight influence on the isotherms and drying kinetics at the studied temperatures, mainly for the one performed at 30°C. However, the drying rate at 60°C decreased more rapidly and the Page model fit well with the experimental data. The antioxidant coatings preserved the thermosensitive compounds during drying, and formulations with the acerola extract and antioxidant acids may be highlighted since, in addition to the antioxidant effect, they also nutritionally enriched the kiwi slices. Thus, the proposed methodology is a promising technique to reduce the oxidative effects inherent in the drying and storage processes. Note de contenu : - MATERIALS AND METHODS : Material - Processing
- RESULTS AND DISCUSSION : Desorption isotherms curves - Drying process - Coating characterization - Evaluation of kiwi slices after the drying process
- Table 1 : Composition (g/100 g) of fresh kiwi (A. deliciosa) at the maturation stage
- Table 2 : Pectin coating formulations
- Table 3 : Relative humidity of the saline solutions used for the sorption isotherm at 30, 50, and 60°C
- Table 4 : Parameters of the Page model and effective diffusivity estimated by the Fick model and the coefficient of determination for each drying test at 50 and 60°C
- Table 5 : Phytochemical compounds content and total antioxidant activity (TAA) of the coatingsDOI : https://doi.org/10.1007/s11998-021-00469-x En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00469-x.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36219
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 4 (07/2021) . - p. 1131-1142[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22969 - Périodique Bibliothèque principale Documentaires Disponible Applying the power of living tea plant / Michael Koganov in PERSONAL CARE EUROPE, Vol. 6, N° 2 (04/2013)
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Titre : Applying the power of living tea plant Type de document : texte imprimé Auteurs : Michael Koganov, Auteur ; Olga Dueva-Koganov, Auteur ; Artyom Duev, Auteur ; Xiaowen Hou, Auteur ; Steven Micceri, Auteur ; Paul Recht, Auteur Année de publication : 2013 Article en page(s) : p. 131-135 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antioxydants
Formulation (Génie chimique)
Gels -- Emploi en cosmétologie
Ingrédients cosmétiques
Théier et constituantsIndex. décimale : 668.5 Parfums et cosmétiques Résumé : Data from the characterisation and fingerprinting methods applied show notable qualitative differences in composition of the functional beverage ingredient obtained using Zeta Fraction technology when compared to green and black tea traditional preparations.
Purecentia Camellia sinensis has a higher solids content, a better representation of certain peaks, and a greater diversity of compounds ; in addition, it has a much more higher concentration of L-theanine than traditional black and green tea preparations. Overall, Purecentia Camellia sinensis has much higher concentration than traditional black and green tea preparations, and contains more constituents. Activity of Purecentia Camellia sinensis is over twenty times higher than the best-performing of the tested commercial green tea beverages, and even the 5% Purecentia Camellia sinensis drink prototype surpasses every tested commercial beverage. This suggests that Purecentia Camellia sinensis may be a potent ingredient for adding antioxidant activity to existing beverages, or creating functional beverages using it as a base active ingredient. Cosmetic ingredient Recentia CS retains its antioxidant activity in personal care gel prototype, and helps to preserve antioxidant activity of other components of the formulation.Note de contenu : - CAMELLIA SINENSIS : Functional drinks supporting 'beauty from wihin' - The functional beverage ingredient vs. black tea and green tea traditional preparations
- ANALYTICAL EVALUATIONS
- L-THEANINE CONCENTRATIONS ANALYSED BY LC-MS
- ANTIOXIDANT ACTIVITIES : Functional beverage ingredient vs. black tea, green tea traditional preparations and commercial tea-based drinks
- METHOD : Osmolality - Refractive index, nD - Density - Dry matter - LC (liquid chromatography) - ELSD (evaporative light scattering detector) or DAD (diode array detector) - LC-MS (liquid chromatography-mass spectrometry) for L-theanine anlaysis - Oxygen radical absorbance capacity (ORAC)Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18227
in PERSONAL CARE EUROPE > Vol. 6, N° 2 (04/2013) . - p. 131-135[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15016 - Périodique Bibliothèque principale Documentaires Disponible Ascorbic acid 2-glucoside : An ascorbic acid pro-drug with longer-term antioxidant efficacy in skin / Carine Jacques in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 43, N° 6 (12/2021)
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Titre : Ascorbic acid 2-glucoside : An ascorbic acid pro-drug with longer-term antioxidant efficacy in skin Type de document : document électronique Auteurs : Carine Jacques, Auteur ; Camille Génies, Auteur ; Daniel Bacqueville, Auteur ; Amélie Tourette, Auteur ; Nathalie Borotra, Auteur ; Fernanda Chaves, Auteur ; Fabio Sanches, Auteur ; Anne L. Gaudry, Auteur ; Sandrine Bessou-Touya, Auteur ; Hèlène Duplan, Auteur Année de publication : 2021 Article en page(s) : p. 691-702 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acide ascorbique glucoside
Antioxydants
Dermo-cosmétologie
Explant de peau
Formulation (Génie chimique)
Ingrédients cosmétiques
Peau -- Soins et hygiène
Peau humaine
Protection cutanée
Systèmes de livraison (pharmacie)
Vitamine CIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : Deleterious effects of pollutants and ultraviolet radiation on the skin can be attenuated using formulations containing antioxidants. However, these have disadvantages, including chemical instability, photodegradation, poor bioavailability or biological activity. Here, two commercial formulations were evaluated: one optimized to stabilize and deliver ascorbic acid (AA) at 15% and the other containing a glucoside form of AA, namely ascorbic acid 2-glucoside (AA2G), at 1.8% and at a physiological pH. We compared the skin delivery, antioxidative effects and chemical stability of AA2G with AA in their respective formulations.
- Methods : Skin delivery was measured using fresh viable human skin explants, and oxidative stress was measured using a human reconstructed epidermal (RHE) model according to levels of malondialdehyde (MDA), superoxide dismutase (SOD) and catalase.
- Results : Ascorbic acid 2-glucoside was completely metabolized to AA by the skin before entering the receptor compartment. The skin contained parent and AA, indicating a reserve of AA2G was present for further metabolism. For AA2G and AA, maximum flux of AA-equivalents was at 12 h, with continued absorption over 24 h. The absolute amount in µg was higher in the skin after application of AA than after application of AA2G. This may suggest a greater antioxidative effect; however, according to all three measurements of oxidative stress, the protective effect of AA and AA2G was similar. Unlike AA, AA2G was chemically stable under storage conditions.
- Conclusion : A lower concentration of AA2G is as effective as the active metabolite, AA, in terms of antioxidant effects. AA2G was chemically stable and can be applied at a lower concentration than AA, thus avoiding the need for an acidic formulation with a pH below 3.5.Note de contenu : - MATERIALS AND METHODS : Materials - Storage stability - Penetration and metabolism in viable fresh human skin explants - HPLC/UV analysis of AA and AA2G - Measurement of oxidative stress and antioxidant response - Data handling and analyses
- RESULTS : Stability of AA2G and AA in formulations - Prodrug concept: AA release in fresh viable human skin explants from AA2G - Kinetic of penetration of AA2G vs. AA formulations in fresh viable human skin explants - Antioxidant protection of AA2G in RHE modelDOI : https://doi.org/10.1111/ics.12745 En ligne : https://drive.google.com/file/d/1jBKOIM98kz6UIcCT2A28dTue6JagkvCH/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37050
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 43, N° 6 (12/2021) . - p. 691-702[article]Astaxanthin : Red diamond amongst antioxidants / Katharina Dokulil in GLOBAL PERSONAL CARE, Vol. 22, N° 9 (10/2021)
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Titre : Astaxanthin : Red diamond amongst antioxidants Type de document : texte imprimé Auteurs : Katharina Dokulil, Auteur Année de publication : 2021 Article en page(s) : p. 85-87 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antioxydants
Antiradicalaire
Astaxanthine
Ingrédients cosmétiques
Peau -- Soins et hygiène
Protection contre le rayonnement ultraviolet
Stress oxydatifIndex. décimale : 668.5 Parfums et cosmétiques Résumé : The skin is the largest and most exposed human organ and plays a key role in everyone's health and appearance. Every day, the skin is exposed to sunlight and needs support to function as protective shield. The natural carotenoid astaxanthin from the microalga Haematococcus pluvialis is considered the most powerful antioxidant. It neutralises harmful free radicals and is highly effective against the impacts of UV radiation. Astaxanthin cannot replace conventional UV filters, but it can make sun protection products more effective. With its branded active ingredient AstaCos OL50, BDI-BioLife Science has proven these biological protection benefits through human clinical studies. Unlike other antioxidants, astaxanthin does not turn into a pro-oxidant and is therefore called the 'red diamond of radical scavengers'. Note de contenu : - Molecular structure of astaxanthin
- Light-induced oxidative stress & the role of ROS
- Light-induced oxidative stress & triggering factors
- Astaxanthin : Proven cell protectionEn ligne : https://drive.google.com/file/d/1xp1nmdnmL_wjn5SwYnMzySpNPWR3jLrX/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36900
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Code-barres Cote Support Localisation Section Disponibilité 22939 - Périodique Bibliothèque principale Documentaires Disponible Astaxanthin - the diamond of antioxidants in the fight against light-induced oxidative stress / Katharina Dokulil in SOFW JOURNAL, Vol. 147, N° 9 (09/2021)
[article]
Titre : Astaxanthin - the diamond of antioxidants in the fight against light-induced oxidative stress Type de document : texte imprimé Auteurs : Katharina Dokulil, Auteur ; Alexander Pototschnik, Auteur Année de publication : 2021 Article en page(s) : p. 2-6 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antiâge
Antioxydants
Astaxanthine
Cosmétiques
Dermo-cosmétologie
Peau -- Effets de la lumière
Peau -- Soins et hygiène
Stress oxydatifIndex. décimale : 668.5 Parfums et cosmétiques Résumé : The skin, as the largest organ of the body, plays an important role for our health. As a protective shield, it is constantly exposed to external environmental influences and stress. In order to maintain and support this protective barrier, numerous active ingredients are used in cosmetics. A major group of these are antioxidants, which can neutralize stress factors in the skin.
Astaxanthin, which is the strongest natural antioxidant belonging to the carotenoid family, does this particularly well due to its special molecular structure. Due to its unique structure of hydrophilic and lipophilic components, it can act more effectively in the lipid bilayers of the skin than most other antioxidants.
Especially in the field of light-induced oxidative stress, triggered by UV radiation and infrared as well as blue light, in vitro and in vivo studies with the active ingredient AstaCos® OL50 from BDI-BioLife Science have shown that astaxanthin has a strong protective effect.
Numerous research studies conclude that astaxanthin can also improve overall skin health, and provide comprehensive protection against oxidative stress. Possible uses range from anti-aging products to formulations that combat the effects of UV exposure and light, to an active ingredient in sunscreen products and face creams.Note de contenu : - The molecular structure of astaxanthin
- Light-induced oxidative stress and the role of ROS (reactive oxygen species)
- Light-induced oxidative stress & factors that can trigger it
- Fig. 1 : AstaCos OL50
- Fig. 2 : Color spectrum of AstaCos OL50 in an O/W emulsion
- Fig. 3 : Exemplary representation of UV-B irradiated 3D full skinmodels with H&E staining after 24h
- Fig. 4 : UV-VIs spectrum of AstaCos OL50En ligne : https://drive.google.com/file/d/1tCpNUqhFuLDSU6z56Hzq2XVJq6nRn563/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36326
in SOFW JOURNAL > Vol. 147, N° 9 (09/2021) . - p. 2-6[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22966 - Périodique Bibliothèque principale Documentaires Disponible Astaxanthin - the red diamond amongst antioxydants / Elisabeth Willeit in SOFW JOURNAL, Vol. 148, N° 10 (10/2022)
PermalinkAustrian natural astaxanthin - a unique active ingredient for biological cell protection / Elisabeth Willeit in SOFW JOURNAL, Vol. 149, N° 9 (09/2023)
PermalinkAvocado polyphenols for dark circles and eye bags / Inès Duvillier in GLOBAL PERSONAL CARE, Vol. 23, N° 3 (03/2022)
PermalinkBenefits of astaxanthin for anti-pollution / Alexander Pototschnik in GLOBAL PERSONAL CARE, Vol. 23, N° 10 (11/2022)
PermalinkBicosomes with β-carotene as free radical scavengers / Estibalitz Fernández in PERSONAL CARE EUROPE, Vol. 8, N° 6 (11/2015)
PermalinkA bifunctional stabilization system for hot melt adhesives / Neal J. Earhart in ADHESIVES AGE, Vol. 37, N° 1 (02/1994)
PermalinkBioactive fucoidan fractions as cosmetic ingredients / Helen Fitton in PERSONAL CARE EUROPE, Vol. 8, N° 3 (04/2015)
PermalinkBioavailable polyphenols for anti-ageing cosmetics / Jean Nkiliza in PERSONAL CARE EUROPE, Vol. 4, N° 2 (06/2011)
PermalinkBiological properties of olive leaf extract / Alain Thibodeau in PERSONAL CARE EUROPE, Vol. 3, N° 2 (06/2010)
PermalinkBiomimétisme & biosciences / Jean-François Molina in EXPRESSION COSMETIQUE, N° Hors-série (12/2020)
PermalinkBlack maca for inner hair architecture / Lorena Sánchez in GLOBAL PERSONAL CARE, Vol. 23, N° 4 (04/2022)
PermalinkBlue-light reimaged - delighting ingredients for skin protection / Ute Wollenweber in SOFW JOURNAL, Vol. 147, N° 8 (07-08/2021)
PermalinkPermalinkBoreal forest conifer extracts : potential natural additives for acrylic polyurethane coatings for the protection of heat-treated jack pine / Sudeshna Saha in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 1 (01/2013)
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