Amino acid derivative for skin microbiome balance / Shiqi Wang in GLOBAL PERSONAL CARE, Vol. 25, N° 6 (06/2024)  

[article]  inGLOBAL PERSONAL CARE > Vol. 25, N° 6 (06/2024) . - p. 63-67 Titre : Amino acid derivative for skin microbiome balance Type de document : texte imprimé Auteurs : Shiqi Wang, Auteur ; Masato Yoshioka, Auteur Année de publication : 2024 Article en page(s) : p. 63-67 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acides aminés Les acides aminés (ou aminoacides) sont une classe de composés chimiques possédant deux groupes fonctionnels : à la fois un groupe carboxyle –COOH et un groupe amine –NH2. Parmi ceux-ci, les acides α-aminés se définissent par le fait que leur groupe amine est lié à l'atome de carbone adjacent au groupe acide carboxylique (le carbone α), ce qui leur confère la structure générique H2N–CHR–COOH, où R représente la chaîne latérale, qui identifie l'acide α-aminé. Les acides α-aminés jouent un rôle fondamental en biochimie comme constituants élémentaires des protéines : ils polymérisent en formant des liaisons peptidiques qui aboutissent à de longues chaînes macromoléculaires appelées peptides. Cheveux -- Soins et hygiène Cosmétiques Cuir chevelu -- Soins et hygiène Dermo-cosmétologie Microbiome cutané Peau -- Soins et hygiène Produits hydratants Index. décimale : 668.5 Parfums et cosmétiques Résumé : Seiwa Kasei explains why its novel amino acid derivative Aminoflora contributes to a holistic approach in advancing overall skin wellbeing by comprehensively addressing skin, scalp, and hair health. In recent years, scientific research has shed light on a fascinating aspect of our skin’s ecosystem: the microbiome. The skin microbiome, a complex community of microorganisms residing on the skin’s surface, has proven to play a pivotal role in maintaining skin health.1,2 There are more than 1,000 species of microorganism on the skin, and the composition of the skin microbiome depends on individuals and it changes daily. Imbalances and reductions in the diversity of the skin’s resident microorganisms can lead to skin problems. This article aims to highlight the significance of a balanced microbiome for vibrant and youthful skin, and elucidates the role of a novel amino acid derivative, Aminoflora, in addressing the issues of microbiome balance and long-lasting moisturisation. Note de contenu : - The skin microbiome - Aminoflora - The role of Aminoflora in balancing skin microbiome - Summary - Long-lasting moisturising effect of Aminoflora - Skin care efficacy - Hair care efficacy - Scalp care efficacy En ligne : https://drive.google.com/file/d/1SPaLKBRE55Dkvn9GVacFtBiD1mlz-J9L/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41245 [article]

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A new nonionic ascorbic acid derivative / Takeshi Nagata in PERSONAL CARE EUROPE, Vol. 7, N° 1 (02/2014)  

[article]  inPERSONAL CARE EUROPE > Vol. 7, N° 1 (02/2014) . - p. 36-38 Titre : A new nonionic ascorbic acid derivative Type de document : texte imprimé Auteurs : Takeshi Nagata, Auteur ; Yoshiki Yamaguchi, Auteur ; Toshiya Tsujino, Auteur ; Shinobu Ito, Auteur ; Takahiro Fujimoto, Auteur ; Masato Yoshioka, Auteur Année de publication : 2014 Article en page(s) : p. 36-38 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antiâge Antibactériens Biomolécules actives Composés amphiphiles Cosmétiques Fibroblastes Ingrédients cosmétiques Peau -- Soins et hygiène Tests de toxicité Vitamine C Index. décimale : 668.5 Parfums et cosmétiques Résumé : In cosmetic products, ascorbic acid derivatives are widely used, because of the instability of ascorbic acid (AsA) (called vitamin C as its alias). As a new nonionic and amphiphilic ascorbic-acid derivative, 2-glyceryl-3-octyl ascorbate (GO-VC), which is synthesised by introducing an octyl and a glyceryl group into ascorbic acid structure, has been recently developed. Due to its unique chemical structure, in addition to the effects of AsA, GO-VC is expected to have a humectant effect derived from glycerin and an anti-bacterial property derived from octanol, and also is highly likely to have a fibroblast activation ability, and a melanogenesis-suppressing and skin pore and wrinkle improving effect. GO-VS's safety tests, which include a human skin-sensitivity test [repeat insult patch test (RIPT)], ocular irritation test [bovine corneal opacity and permeability (BCOP) assay], genetic toxicity (Ames test), and clinical human skin patch test, have been performed, confirming the safety of GO-VC. Note de contenu : - FUNCTIONS OF GO-VC : The fibroblast proliferating ability of GO-VC - The melanogenesis-suppressing ability of GO-VC - The result of closed patch test of GO-VC - The beautifying effect of GO-VC En ligne : https://drive.google.com/file/d/1TRdaSTdHfD1FQGirbml92r5-a_XYG6BA/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20469 [article]

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The characteristics of a microcapsule made entirely from a new silicone-resign-polypeptide and its application / Yuka Ueda in IFSCC MAGAZINE, Vol. 6, N° 2 (04-05-06/2003)

[article]  inIFSCC MAGAZINE > Vol. 6, N° 2 (04-05-06/2003) . - p. 111-116 Titre : The characteristics of a microcapsule made entirely from a new silicone-resign-polypeptide and its application Type de document : texte imprimé Auteurs : Yuka Ueda, Auteur ; Akihiro Segawa, Auteur ; Masato Yoshioka, Auteur Année de publication : 2003 Article en page(s) : p. 111-116 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Microcapsule  'Absorbeurs  UV'  Encapsulation  Silicone  'Produit  de  protection  solaire' Index. décimale : 668.5 Parfums et cosmétiques Résumé : A new method was developed to prepare microcapsules involving hydrophobic components and a totally new silicone-resin-polypeptide material used as the encapsulating body, where the polypeptide was made by hydrolysis of collagen and silk protein combined with silicone. This microcapsule was easily prepared from a silicone-resin-polypeptide in water solution. Not only was the extent of encapsulation in the micro-capsule as high as 90% (which has never been reached) but also the particle size was also homogeneous and could be sufficiently controlled to obtain very small sizes. Moreover, these microcapsules were resistant to relatively high shear forces and were stable over a long time period. Application in cosmetics by using the UV absorbers (2-ethylhexyl-4-methoxycinnamate (EHMC) and 4-tert-butyl-4'-methoxy-dibenzoylmethane (BMDBM)) as the encapsulated ingredients was examined. Because the polymer acts like as surfactant itself, it was possible to apply organic UV absorbers in water-rich formulations without any surfactant. This formulation demonstrated a good moisturizing and soft skin feel. In addition, since the microcapsules were easily mixed with inorganic compounds like titanium dioxide and zinc oxide, the amount of their dispersants could be reduced to maintain a high SPF value. As a result, it was concluded that such microcapsules might be widely applied in cosmetics. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10595 [article]

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