Multifunctionals empowered - Part 1 / Balint Koroskenyi in SOFW JOURNAL, Vol. 149, N° 12 (12/2023)  

[article]  inSOFW JOURNAL > Vol. 149, N° 12 (12/2023) . - p. 34-42 Titre : Multifunctionals empowered - Part 1 Type de document : texte imprimé Auteurs : Balint Koroskenyi, Auteur ; Jasmin Salmen, Auteur ; Maria Teresa Fontan Yanes, Auteur Année de publication : 2023 Article en page(s) : p. 34-42 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acides organiques Antimicrobiens Cosmétiques -- Aspect sanitaire Emulsions -- Emploi en cosmétologie Matériaux -- Propriétés barrières Matériaux -- Propriétés fonctionnelles Microbiologie pH Phytique, Acide Index. décimale : 668.5 Parfums et cosmétiques Résumé : Symshield®, also known as barrier technology or hurdle technology, is a concept of combining several physical or chemical factors aiming at inhibiting microbial growth. This systematic approach has been proven successful as it strengthens the microbiological product protection systems of cosmetic formulations, thus ensuring long-term product quality and safety. Relying on this technology, multifunctional ingredients are often used in combination with preservatives or other antimicrobial enhancers and are commonly applied as part of the product protection system. While typically chemical ingredients are used as barriers in these combinations such as organic acids, chelating agents, surfactants, etc., it is important not to overlook the possible beneficial effects of physical parameters. Ultimately, this extensive approach has the potential to create a more robust product protection system or even lower the necessary use level of traditional antimicrobial compounds in the formula. In this series of publications, we present studies to demonstrate how the antimicrobial product protection effectiveness of multifunctional cosmetic ingredients, which are known product protection enhancers, can be optimized by combining them with additional barriers, such as pH, water activity, organic acids, chelating agents, etc. In the first part of the series, we examine the effect of pH and organic acids. Note de contenu : - pH - Organic acids - EXPERIMENTAL : Materials - Microbial challenge tests - Emulsion preparation - RESULTS : Effect of pH - Effect of organic acids - Table 1 : O/W anionic emulsion formula - Table 2 : pKa values of phytic acid - Figure : Chemical structures of organic acid salts used in this study En ligne : https://drive.google.com/file/d/1s7GD6GENUe6NaQUHLycrulS73GiLiySe/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40545 [article]

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Multifunctionals empowered - Part 2 / Balint Koroskenyi in SOFW JOURNAL, Vol. 150, N° 6 (06/2024)  

[article]  inSOFW JOURNAL > Vol. 150, N° 6 (06/2024) . - p. 40-44 Titre : Multifunctionals empowered - Part 2 Type de document : texte imprimé Auteurs : Balint Koroskenyi, Auteur ; Jasmin Salmen, Auteur ; Maria Teresa Fontan Yanes, Auteur Année de publication : 2024 Article en page(s) : p. 40-44 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antimicrobiens Chélates Cosmétiques -- Aspect sanitaire Eau Emulsions -- Emploi en cosmétologie Ingrédients cosmétiques Matériaux -- Propriétés fonctionnelles Microbiologie Index. décimale : 668.5 Parfums et cosmétiques Résumé : We have begun a series of publications on studies related to the optimization of the antimicrobial product protection effectiveness of multifunctional cosmetic ingredients. Previously, we reported studies on the impact of pH even within a narrow range most relevant to cosmetic products [1]. Powerful combinations with organic acids were also examined as part of our technology platform Symshield®, which explores the concept of barrier technology or hurdle technology in the interest of empowering multifunctionals. In this article, we report studies with two additional parameters, chelating agents and water activity. Note de contenu : - INTRODUCTION : Chelating agents - Water activity - EXPERIMENTAL : Materials - Microbial challenges tests - Emulsion preparation - Water activity measurements - RESULTS : Effect of chelating agent - Fig. 1 : Minimum water activity (Aw) requirement of microorganisms - Fig. 2 : Effect of chelating agents at pH 5.5 on microbial growth - Fig. 3 : Effect of chelating agent on microbial count with 0.5% caprylyl glycol/1,2-hexanediol - Fig. 4 : The effect of reduced water activity due to glycerin on microbial challenge tests in an O/W emulsion containing 5% pentylene glycol at pH 5.5 - Table 1 : O/W anionic emulsion formula - Table 2 : Chelating agents used in this study - Table 3 : Effect of glycerin on the water activity of an emulsion at pH 5.5 - Table 4 : Water activity reductions by 20% glycerin for different multifunctionals in O/W emulsions En ligne : https://drive.google.com/file/d/1qs5CqJaQsUp2pq6XZNBpXECKZ7mJapCk/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41228 [article]

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