[article]
| Titre : |
Combination of lactic acid with 1,2-hexanediol - a new possibility to stabilise rinse-off formulations |
| Type de document : |
texte imprimé |
| Auteurs : |
Katja von Nessen, Auteur ; Felix Weiher, Auteur ; martin Neubauer, Auteur ; Thomas Kerl, Auteur ; Judith Preuschen, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 22-25 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
1,2-hexanediol
Antimicrobiens
Cosmétiques -- Conservation
Dermo-cosmétologie
Formulation (Génie chimique)
Lactique, AcideL'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.
Laureth sulfate de sodium
Peau -- Soins et hygiène
Savon liquide
Stabilisants (chimie)
Tests d'efficacité
|
| Index. décimale : |
668.5 Parfums et cosmétiques |
| Résumé : |
In recent years the demand from consumers for natural preservation systems for personal care products has increased significantly.
Since many preservatives are not sufficiently effective against all microbes when used alone, more and more often a combination with preservation boosters such as 1,2-hexanediol is required. One well-established natural preservative is lactic acid, which is known to reduce bacteria in aqueous systems. In this study, preservation stress tests according to the European Pharmacopeia (Ph. Eur. or EP) were carried out for single ingredients and combinations of lactic acid with 1,2-hexanediol in an aqueous solution of sodium laureth sulfate (SLES) as a basic system. Sufficient preservation of the basic system could not be achieved with the individual substances alone. In contrast, in combination the two showed a synergistic effect and the test was passed. This synergistic effect of the combination of lactic acid and 1,2-hexanediol was verified in a shower gel formulation. |
| Note de contenu : |
- INTRODUCTION : 1,2-hexanediol/WeylCare HexaPB from WeylChel performance products GmbH - L(+)-lactic acid from jungbunzlauer
- RESULTS : Analysis of antimicrobial preservation efficacy - Criteria of acceptance - Antimicrobial preservation efficacy tests for single substances - Antimicrobial preservation efficacy tests in a real formulation
- Table 1 : Criteria of acceptance for Ph. Eur. test
- Table 2 : Shower gel formulation with 2.9 % lactic acid and 1 % 1,2-hexanediol
- Fig. 1 : Aqueous system of 10% SLES without preservation (test result : failed)
- Fig. 2 : Aqueous system of 10% SLES plus 1 % 1,2-hexanediol (test result : failed)
- Fig. 3 : Aqueous system of 10% SLES plus 2.9 % lactic acid (test result : failed)
- Fig. 4 : Aqueous system of 10% SLES plus 2.9 % lactic acid and 1 % 1,2-hexanediol (test result: passed)
- Fig. 5 : Shower gel formulation without preservation (test result : failed)
- Fig. 6 : Shower gel formulation with 2.9 % lactic acid and 1 % 1,2-hexanediol (test result : passed) |
| En ligne : |
https://drive.google.com/file/d/1NC0aUtQaaDsdWpYKEq2OxwFQtZ3f6yL8/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33930 |
in SOFW JOURNAL > Vol. 146, N° 4 (04/2020) . - p. 22-25
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Combination of lactic acid with 1,2-hexanediol - a new possibility to stabilise rinse-off formulations in SOFW JOURNAL, Vol. 146, N° 4 (04/2020)
