Biologically inspired fighting germs using HCIO hydrogels with smectites / Jessica Gödeker in SOFW JOURNAL, Vol. 148, N° 12 (12/2022)  

[article]  inSOFW JOURNAL > Vol. 148, N° 12 (12/2022) . - p. 2-7 Titre : Biologically inspired fighting germs using HCIO hydrogels with smectites Type de document : texte imprimé Auteurs : Jessica Gödeker, Auteur ; Anne Drewer, Auteur ; Tom Lamont, Auteur Année de publication : 2022 Article en page(s) : p. 2-7 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acide hypochloreux Argile Chlore Désinfectants Désinfection Détergents Formulation (Génie chimique) Hectorite hydrocolloïdes Hygiène Laponite Rhéologie Smectite Thixotropie Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Hypochlorous acid (HClO) is formed in the white blood cells of all mammals. As part of a mechanism that developed several millions of years ago, it also helps the human body to protect against pathogens that enter it. This makes the weak acid a nature-based option for disinfection. Despite this, a disadvantage of water-thin solutions of hypochlorous acid is that they have significantly limited anti-microbial potential due to the reduced contact time. Hydrogels overcome this limitation and lead to improved and more sustainable use. Due to the high reactivity of hypochlorous acid, common additives such as polymer thickeners and natural clays are not suitable. Synthetic smectite clays – of which the presented PURABYK-R 5500 is one example – are very similar in structure to natural clays. However, due to their subsequent technical development, synthetic smectite clays exhibit better stability and are therefore very well suited to forming these hydrogels. They stabilize the hypochlorous acid in the required pH value range and are free from components that impair the activity of HClO. These unique additives are produced under controlled conditions from naturally occurring inorganic mineral sources. They offer the possibility of using structures from nature, paired with a very high purity and consistent quality. Their great potential is presented here using PURABYK-R 5500 as an example. Note de contenu : - INTRODUCTION : Hypochlorous acid - an effective nature-based weapon for combatting germs - HCIO-based hydrogels - a challenging system - PURABYK-R 5500 - a new, modified phyllosilicate with improved compatibility - MATERIALS AND METHODS : Formulation of the hydrogel with PURABYK-R 5500 - A more in-depth reflection - high-resolution procedure for forming the nanostructures - RESULTS AND DISCUSSION : Micro- and macro-morphology using TEM and AFM - Viscosity behavior of the hydrogel - thixotropy and yield point - Biocide effectiveness - influence of PURABYK-R 5500 - Table 1 : Formulation of the hydrogel En ligne : https://drive.google.com/file/d/1zGfLvdCzX9ayCPFPutQAIz8mnUSThkhg/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38571 [article]

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Disinfection yesterday, today and tomorow - Effective chemistry in the fight against a global viral danger / Mark Squire in SOFW JOURNAL, Vol. 147, N° 1-2 (01-02/2021)  

[article]  inSOFW JOURNAL > Vol. 147, N° 1-2 (01-02/2021) . - p. 18-21 Titre : Disinfection yesterday, today and tomorow - Effective chemistry in the fight against a global viral danger Type de document : texte imprimé Auteurs : Mark Squire, Auteur Année de publication : 2021 Article en page(s) : p. 18-21 Langues : Anglais (eng) Catégories : Désinfectants Désinfection Phénols Tests d'efficacité Virucides Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : The coronavirus (COVID-19) pandemic is an ever-growing source of concern and uncertainty for Governments and all of us. Its drastic impact on lives and economies is of great concern, and is likely to continue until a mass vaccination is carried out. The increasing number of daily cases worldwide highlights the need for better protection and infection control procedures across all UK hospitals, health centres, care homes and now especially schools. So how can we gain improved control against this virulent, highly infectious virus ? Note de contenu : - HISTORICAL VIRUS CONTROL : Phenolic compounds - Quaternary ammonium compounds - Bleach - VIRUCIDAL EFFICACY TESTS - DISINFECTANTS FOR TODAY AND TOMORROW : Efficient and versatile in use En ligne : https://drive.google.com/file/d/17zBbbBVx7-rCLe1Eh1c0Rb8XFEZkrri0/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35143 [article]

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Eco-friendly disinfection with lactic acid / Katja von Nessen in SOFW JOURNAL, Vol. 143, N° 10 (10/2017)  

[article]  inSOFW JOURNAL > Vol. 143, N° 10 (10/2017) . - p. 4-9 Titre : Eco-friendly disinfection with lactic acid Type de document : texte imprimé Auteurs : Katja von Nessen, Auteur ; Felix Weiher, Auteur ; Martin Peter Neubauer, Auteur Année de publication : 2017 Article en page(s) : p. 4-9 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antimicrobiens -- Suppression ou remplacement Désinfectants Désinfection Formulation (Génie chimique) Lactique, Acide L'acide lactique est un acide organique qui joue un rôle dans divers processus biochimiques. Un lactate est un sel de cet acide. Contrairement à ce que peut laisser penser son nom, l'acide lactique n'est pas présent uniquement dans le lait, mais également dans le vin, certains fruits et légumes, et dans les muscles. L'acide lactique est un acide alpha hydroxylé, sa formule chimique est C3H6O3 et sa structure se reflète dans son nom systématique, l'acide 2-hydroxypropanoïque. Surfactants Index. décimale : 668.5 Parfums et cosmétiques Résumé : Efficient bacterial disinfection is easy to realise. Efficient bacterial disinfection with an active substance from natural origin, readily biodegradable and safe in use, is a more challenging target to achieve. Only a few substances available on the market fulfil these criteria. One such substance is L(+)-lactic acid, and previous studies have already substantiated its basic biocidal performance. In this paper we present additional data proving the efficacy of lactic acid even under more demanding conditions such as elevated pH or short contact times. We will show that lactic acid offers a veritable alternative to traditional, synthetic biocides, supporting eco-friendly and sustainability claims in disinfectant formulations. Note de contenu : - REGULATORY BACKGROUND - TEST METHODS - RESULTS : Efficacy screening of various lactic acid/surfactant combinations En ligne : https://drive.google.com/file/d/1q0z3pmNPM08PgUxt9GU8TyZRA3odgpsp/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29271 [article]

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Exuberantly innovative - Innovations and risks in professional cleaning / Horst Lothar Möhle ; Tobias Potstada in SOFW JOURNAL, Vol. 144, N° 12 (12/2018)  

[article]  inSOFW JOURNAL > Vol. 144, N° 12 (12/2018) . - p. 46-49 Titre : Exuberantly innovative - Innovations and risks in professional cleaning : Conference of SEPAWA specialist group profesional cleaning and care (PRP) Type de document : texte imprimé Auteurs : Horst Lothar Möhle, Auteur ; Tobias Potstada, Auteur Année de publication : 2018 Article en page(s) : p. 46-49 Langues : Anglais (eng) Catégories : Congrès et conférences Désinfection Détergents Matériaux -- Détérioration Mousse (chimie) Nettoyage Polyméthacrylate de méthyle Le poly(méthacrylate de méthyle) (souvent abrégé en PMMA, de l'anglais Poly(methyl methacrylate)) est un polymère thermoplastique transparent obtenu par polyaddition dont le monomère est le méthacrylate de méthyle (MMA). Ce polymère est plus connu sous son premier nom commercial de Plexiglas (nom déposé), même si le leader global du PMMA est Altuglas International9 du groupe Arkema, sous le nom commercial Altuglas. Il est également vendu sous les noms commerciaux Lucite, Crystalite, Perspex ou Nudec. Index. décimale : 668.5 Parfums et cosmétiques Résumé : The annual meeting of the SEPAWA Specialist Group "Professional Cleaning and Care (PRP) was held at the Inselhotel, Konstanz, 22nd 23rd March 2018. The event, chaired by Prof. Dr-Ing. Tobias Kimmel, had the theme “Exuberently innovative - innovations and risks in professional cleaning." The event was organised with the support of the Hochschule Niederrhein University of Applied Sciences. Three of the seven lectures formed a themed session on the basics and applications of foams. Starting with the instrumental characterisation of foams (Dr. Willers, Krüss GmbH), examples of the application and use of foams in various areas were shown and typical laboratory measurement methods were presented (Dr. Tropsch, BASF SE). Finally, customer expectations and the influence of formulation on foam formation were discussed based on an example (Ms. Wehler, Zschimmer & Schwarz GmbH & Co. KG) Four further lectures explored current topics and trends. Examples of current research topics (Ms. Ettenberger-Bornberg, OFI Technologie & Innovation GmbH) and current testing methods for cleaning and disinfecting surfaces (Dr. Lorenz, Hohenstein Laboratories GmbH & Co. KG) were presented. The consequences of the unauthorised use of the insecticide fipronil for the cleaning of chicken coops were examined from an official perspective (Dr. Kühl, Federal Office for Consumer Protection and Food Safety). Finally, an experimental lecture examined the risks of applying cleaning agents to plastics, which can lead to material failure due to stress cracking. An example was used to show how this effect can be reduced by adapting the formulation (Mr Göllner, hollu Systemhygiene GmbH). Note de contenu : - Fig. 1 : Foam in cross section, polyhedral bubble, foam lamella and plateau border in detail - Fig. 2 : Test field 1 : contaminated, previously cleaned area ; Fields 2-4 : test areas in which cross-contamination can be tested - Fig. 3 : Comparison of test specimens with centrally impressed pin and different cleaners and real-life example of damage to bathroom fittings En ligne : https://drive.google.com/file/d/1ozDT4zIa8l-WfebC_lhyG_k2TejIf89c/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31522 [article]

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Green bacterial disinfection with lactic acid / Felix Weiher in SOFW JOURNAL, Vol. 142, N° 10 (10/2016)  

[article]  inSOFW JOURNAL > Vol. 142, N° 10 (10/2016) . - p. 10-16 Titre : Green bacterial disinfection with lactic acid Type de document : texte imprimé Auteurs : Felix Weiher, Auteur ; Martin Peter Neubauer, Auteur Année de publication : 2016 Article en page(s) : p. 10-16 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antibactériens Désinfectants Désinfection Lactique, Acide L'acide lactique est un acide organique qui joue un rôle dans divers processus biochimiques. Un lactate est un sel de cet acide. Contrairement à ce que peut laisser penser son nom, l'acide lactique n'est pas présent uniquement dans le lait, mais également dans le vin, certains fruits et légumes, et dans les muscles. L'acide lactique est un acide alpha hydroxylé, sa formule chimique est C3H6O3 et sa structure se reflète dans son nom systématique, l'acide 2-hydroxypropanoïque. Nettoyage industriel Produits chimiques -- Suppression ou remplacement Surfactants Index. décimale : 668.5 Parfums et cosmétiques Résumé : Sustainability and safety continue to be major focuses in the cleaning industry, including the segment for antimicrobial products. This segment operates in a complex regulatory landscape that can exacerbate the challenge to formulate an efficient, economic and environmentally friendly product. The European Biocidal Products Regulation (BPR) sets rigorous standards regarding active substance approval, product authorisation and efficacy testing. These rules and market restrictions create additional hurdles, but also present opportunities. They stimulate the search for and development of green, safe ingredients to replace more traditional, hazardous biocides. Produced by naturel fermentation, L(+)-lactic acid is safe to handle and readily biodegradable. This report shows that lactic acid is also an excellent bactericide. Its biocidal performance in combination with surfactants commonly used in cleaners has been tested in accordance with established EN protocols. Some of these surfactants were found to provide an excellent antibacterial synergy with lactic acid. Thus bacterial reduction levels of log 5 can be achieved even under demanding test conditions and using low concentrations of lactic acid. These data underline the potential of lactic acid to offer an efficient alternative to conventional biocides. Note de contenu : - Regulatory background - Test methods - The role of surfactants - Challenging the performance of lactic acid - TABLES : 1. Performance of susbstances in a modified EN 1040 test (five minutes contact time) ; colour represents pass (green ; log > 5 reduction) or fail (red) of the test - 2. Performance of substances in modified increasingly demanding EN tests (low and high BSA concentration in BN 1276, low concentration of BSA in EN 13697) ; colour represents pass (green ; log > 5 reduction, log > 4 for EN 13697) or fail (red) of the test En ligne : https://drive.google.com/file/d/1YKW4uZC-EjrRRrJL26qhE3hV7L9-0nF6/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27692 [article]

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Hydroalcoholic hand sanitisers in the COVID era / Mauro Bleve in GLOBAL PERSONAL CARE, Vol. 23, N° 3 (03/2022)  

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KOLB colloquium - Biofilm connect industries / Klaus Henning in SOFW JOURNAL, Vol. 142, N° 4 (04/2016)  

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Microbiological requirements for water used in cosmetics production / Ulrich Eigener in SOFW JOURNAL, Vol. 150, N° 7-8 (07-08/2024)  

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La photocatalyse pour l'élimination des polluants / Sylvie Lacombe in L'ACTUALITE CHIMIQUE, N° 308-309 (05-06/2007)  

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Les textiles photocatalytiques / Jean-Marie Hermann in L'ACTUALITE CHIMIQUE, N° 360-361 (02-03/2012)  

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Triameen Y12D High performance, broad spectrum biocide for disinfection and preservation / Renate Borgmann-Strahsen in SOFW JOURNAL, Vol. 145, N° 12 (12/2019)  

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Use of Biomonitors for the Validation of Chemo-thermal Disinfecting Washing Procedures / G. Kagemann in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 45, N° 6/2008 (11-12/2008)

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