Antimicrobial efficiency boost via chelating agents / Wolfgang Siegert in PERSONAL CARE EUROPE, Vol. 7, N° 3 (04/2014)  

[article]  inPERSONAL CARE EUROPE > Vol. 7, N° 3 (04/2014) . - p. 87-90 Titre : Antimicrobial efficiency boost via chelating agents Type de document : texte imprimé Auteurs : Wolfgang Siegert, Auteur Année de publication : 2014 Article en page(s) : p. 87-90 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antimicrobiens Chélates Conservateurs (chimie) Cosmétiques Cosmétiques -- Tests Formulation (Génie chimique) Tests d'efficacité Tétrasodium glutamate diacétate Index. décimale : 668.5 Parfums et cosmétiques Résumé : The continuing discussion of cosmetic preservatives has limited the number of accepted actives that can be practically used. As a result, a number of different methods and materials are being used to boost the activity of the remaining acceptable substances for microbial stabilisation. Increasing the permeability of microbial cells to biocides by EDTA helps to optimise the stabilisation. To avoid the environmental discussion about chelating agents, readily biodegradable alternatives to EDTA are indispensable. The antimicrobial stabilisation of multifunctional additives in combination with chelating agents were tested in different cosmetic formulations. The readily biodegradable chelating agent tetrasodium glutamate diacetate shows good performance in reducing the use concentration of sensiva SC 10, sensiva PA 20, sensiva PA 30 and sensiva PA 40 to pass antimicrobial effectiveness testing. Note de contenu : - The use of chelating agents in cosmetics - Commonly used chelating agents - Trends in using chelating agents - Boosting preservatives : mode of action - Influence of pH on the preservative boosting effect - Tests with frame formulations - The schülke KoKo Test - The schülke FeuTuKo Test - Formulation 1 : PEG-free emulsion for baby wipes (O/W) - Formulation 2 : Natural O/W cream - Formulation 3 : Cosmetic wipes - Self-preserving En ligne : https://drive.google.com/file/d/19uHgnBC9HnW_vy4kr2ganNfRNKf6U6B8/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21116 [article]

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Boosting efficacy of preservatives / Marion Leschke in PERSONAL CARE EUROPE, Vol. 1, N° 1 (09/2008)  

[article]  inPERSONAL CARE EUROPE > Vol. 1, N° 1 (09/2008) . - p. 32-34 Titre : Boosting efficacy of preservatives Type de document : texte imprimé Auteurs : Marion Leschke, Auteur ; Wolfgang Siegert, Auteur Année de publication : 2008 Article en page(s) : p. 32-34 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Conservateurs (chimie) Cosmétiques -- Aspect sanitaire Ingrédients cosmétiques Index. décimale : 668.5 Parfums et cosmétiques Résumé : he topic of preservation is always of importance to formulators and finished good marketers. Formulators are aware of the necessity to adequately preserve their products in order to ensure product safety and be in compliance with the respective legislations. This task is made much more difficult when marketing requirements are added to the factors influencing the preservative choice. Demands such as global approval, soft preservation, „free of...", etc. have limited the number of acceptable actives. Increasing marketing pressure has resulted in an interest in reducing the amount of traditional preservatives in cosmetic formulations or in finding novel ways to keep cosmetic products microbiologically stable. It is now more important than ever that preservation or microbiological stability is an integral part of new formulation concepts. At an early stage of product development, formulators must consider all possible methods of enhancing the efficacy of traditional preservative actives, e.g. using chelating agents or multifunctional materials. There are some ingredients known in the market which can boost the efficacy of preservative actives without having their own antimicrobial effect. Chelating agents are able to enhance the efficacy of most preservatives. This occurs as the chelator removes metal ions from cell walls of the microbes. The weakened walls then allow the biocide to penetrate and destroy the microorganisms. Although the boosting effect of chelating agents on preservatives is well known, the environmental fate of these material has been debated. To avoid the environmental discussion about chelating agents, readily biodegradable alternatives have been introduced to the market (1). Note de contenu : - Ethylhexyglycerin - a booster for preservatives - Boosting preservative efficacy woth chelating agents En ligne : https://drive.google.com/file/d/1ozt9X0wUyw0-hguHw7an0TJwSKjuOvGf/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22089 [article]

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