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https://doi.org/10.1016/j.aca.2020.06.069
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Campo DC | Valor | Lengua/Idioma |
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dc.contributor.author | García-Nicolás, María | - |
dc.contributor.author | Arroyo-Manzanares, Natalia | - |
dc.contributor.author | Hernández, Juan de Dios | - |
dc.contributor.author | Guillén, Isidro | - |
dc.contributor.author | Vizcaino, Pascuala | - |
dc.contributor.author | Sánchez-Rubio, Marta | - |
dc.contributor.author | López-García, Ignacio | - |
dc.contributor.author | Hernández Córdoba, Manuel | - |
dc.contributor.author | Viñas López-Pelegrín, Pilar | - |
dc.contributor.other | Química Analítica | es |
dc.date.accessioned | 2021-11-03T17:41:28Z | - |
dc.date.available | 2021-11-03T17:41:28Z | - |
dc.date.issued | 2020-07-11 | - |
dc.identifier.citation | Analytica Chimica Acta, 2020, 1128, 52-61. | es |
dc.identifier.issn | 0003-2670 | - |
dc.identifier.uri | http://hdl.handle.net/10201/113664 | - |
dc.description.abstract | The most commonly used technique for monitoring microbial contamination in cosmetic products is plate counting. In this contribution, headspace - gas chromatography (HS-GC) coupled to mass spectrometry (MS) or ion mobility spectrometry (IMS) is proposed as a technique to evaluate rapidly and accurately the state of microbial colonies in cosmetic creams using the volatile organic compounds produced by microorganisms (MVOC). The work focuses on monitoring two of the microorganisms that most frequently occur in such creams, Candida albicans and Staphylococcus aureus. In addition, two different types of ingredient with antimicrobial properties (a chemical preservative and a natural preservative) were added to study the behaviour of these microorganisms under different conditions. The facial creams were elaborated and inoculated with the two above microorganisms, and then sampled weekly for 4 weeks, analysing the evolution of the MVOCs by HS-GC-MS and HS-GC-IMS. In addition, microbial contamination was determined by the classical plate counting method. The pH, colour, viscosity and water activity parameters were also measured. The use of chemometric tools is essential because of the large amount of data generated, and different models based on discriminant analysis with an orthogonal projection on latent structures (OPLS-DA) were constructed. The optimal models obtained by both analytical techniques allowed differentiation between contaminated and non-contaminated creams, with a validation success rate of 94.4%. In addition, MVOC monitoring also allowed assessment of the microbial concentration. | es |
dc.format | application/pdf | es |
dc.format.extent | 26 | es |
dc.language | eng | es |
dc.publisher | Elsevier | es |
dc.relation | Nombre del proyecto: Innovaciones en plataformas analíticas con técnicas cromatográficas y espectrométricas. Código: PGC2018-098363-B-I00. Agencia/entidad financiadora: Ministerio de Ciencia, Innovación y Universidades. Ámbito Nacional. Proyectos de I+D de generación de conocimiento, Programa estatal de generación de conocimiento y fortalecimiento científico y tecnológico del sistema de I+D+i. Convocatoria 2018. | es |
dc.rights | info:eu-repo/semantics/openAccess | es |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | ion mobility spectrometry | es |
dc.subject | mass spectrometry | es |
dc.subject | gas chromatography | es |
dc.subject | cosmetic creams | es |
dc.subject | microbial contamination | es |
dc.subject.other | CDU::5 - Ciencias puras y naturales::54 - Química::543 - Química analítica | es |
dc.title | Ion mobility spectrometry and mass spectrometry coupled to gas chromatography for analysis of microbial contaminated cosmetic creams | es |
dc.type | info:eu-repo/semantics/article | es |
dc.relation.publisherversion | https://reader.elsevier.com/reader/sd/pii/S0003267020307182?token=E3FE0642481C8FF322269A51E15DF9713D8ECDCD1A5E53E4267D0CAD4901F5CB7312C22F0A7E6846F4AC6B36E6713F9A&originRegion=eu-west-1&originCreation=20211103092742 | es |
dc.identifier.doi | https://doi.org/10.1016/j.aca.2020.06.069 | - |
Aparece en las colecciones: | Artículos: Química Analítica |
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