Stability of lipid nanoparticles for hair conditioning formulations / Wan-Goo Cho in SOFW JOURNAL, Vol. 142, N° 6 (06/2016)  

[article]  inSOFW JOURNAL > Vol. 142, N° 6 (06/2016) . - p. 8-13 Titre : Stability of lipid nanoparticles for hair conditioning formulations Type de document : texte imprimé Auteurs : Wan-Goo Cho, Auteur Année de publication : 2016 Article en page(s) : p. 8-13 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cheveux -- Soins et hygiène Cires Conditionnement Emulsions -- Emploi en cosmétologie Emulsions -- Stabilité Lipides Nanoémulsions Nanoparticules Produits capillaires Taille des gouttelettes Index. décimale : 668.5 Parfums et cosmétiques Résumé : Candelilla wax-in-water nanoemulsions stabilized by sorbitan monooleate/PEG-20 sorbitan monooleate were prepared by the phase inversion composition (PIC) method. Stable nanoemulsions with droplet diameters below 50 nm could be formed when the hydrophilic—lipophilic balance (HLB) values were between 13.5 and 14.5, surfactant concentration was 5.0 wt°/0, and the surfactant-wax ratio was 1:1. Increased emulsification temperature and cooling rate were found to improve the emulsion properties. Pr ocess of PIC (adding aqueous phase to the wax phase) produced smaller droplet size nanoemulsion compared to the process of adding wax phase to the aqueous phase. The stability of these nanoemulsions was assessed by following the change in droplet diameters with time of storage at room temperature (-25°C). The size remained constant during 2 months storage time. The nanoemulsions with the droplet diameter less than 50 nm would be applicable to hair conditioning formulations. Note de contenu : - Determination of required HLB for preparing of Candelilla was emulsions - The influence of surfactant concentration for preparing of Candelilla wax nanoemulsions - The influence of temperature for preparing of Candelilla wax nanoemulsions - The influence of emulsification route for preparing of Candelilla wax nanoemulsions - Emulsion stability En ligne : https://drive.google.com/file/d/1p48YWrP1f4niLmD_sndqEcQ0-JOKBH3x/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26698 [article]

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The penetration enhancement and the lipolytic effects of TAT–GKH, both in in vitro, ex vivo, and in vivo / Jun-Man Lim in IFSCC MAGAZINE, Vol. 7, N° 2 (04-05-06/2004)

[article]  inIFSCC MAGAZINE > Vol. 7, N° 2 (04-05-06/2004) . - p. 103-108 Titre : The penetration enhancement and the lipolytic effects of TAT–GKH, both in in vitro, ex vivo, and in vivo Type de document : document électronique Auteurs : Jun-Man Lim, Auteur ; Min-Youl Chang, Auteur ; Sun-Gyoo Park, Auteur ; Nae-Gyu Kang, Auteur ; Young-sook Song, Auteur ; Yun-Seog Kang, Auteur ; Wan-Goo Cho, Auteur Année de publication : 2004 Article en page(s) : p. 103-108 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Adipocyte  'Cellules  de  diffusion  Franz'  'Système  projection  Fringe'  Lipolyse  Microdialyse  'Tri-peptide  glycine–lysine–histidine'  'Activateur  transcriptionnel  Transactivation' Index. décimale : 668.5 Parfums et cosmétiques Résumé : It was demonstrated that the trans-activating transcriptional activator (TAT) protein from HIV-1 could enter cells when added to the surrounding media. TAT peptide chemically attached to various proteins was able to deliver these proteins to various cells and even at high levels in heart and spleen tissues in mice. In this study, the tri-peptide GKH (glycine–lysine–histidine) derived from the parathyroid hormone, which is known as a lipolytic peptide, was attached to 9-poly lysine (TAT) to be used as a cosmetic ingredient for eye-bag care product. When glycerol is released, expressed as the extracellular glycerol concentration (the so-called lipolysis index), TAT–GKH at 10−5m induces a maximal lipolytic effect of approximately 41.5% in epididymal adipocytes isolated from rats, compared with basal lipolysis. In a microdialysis study, TAT–GKH was perfused into epididymal adipose tissues of anaesthetized rats in increasing concentrations in a Ringer solution. The glycerol concentration in each dialysate was measured using an ultra-sensitive radiometric method. The perfusion of TAT–GKH induced a lipolytic effect. A penetration study showed that TAT–GKH resulted in a sevenfold higher penetration into excised hairless mice skin than GKH. An in vivo study showed that a TAT–GKH containing emulsion had a better effect upon the relative volume reduction of eye bag after 28 days of application on 22 healthy female volunteers than the placebo. It was therefore concluded that TAT–GKH increased skin penetration, which resulted in enhanced lipolytic effects in in vitro, ex vivo and in volume reduction of eye-bags in in vivo studies. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10523 [article]

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