Bibliographic citations
Sánchez, D., (2022). Evaluación del tiempo de vigencia del agar P para pseudomona (PSP) y del agar F para pseudomona (PSF) almacenados en frascos [Universidad Peruana Cayetano Heredia]. https://hdl.handle.net/20.500.12866/11236
Sánchez, D., Evaluación del tiempo de vigencia del agar P para pseudomona (PSP) y del agar F para pseudomona (PSF) almacenados en frascos []. PE: Universidad Peruana Cayetano Heredia; 2022. https://hdl.handle.net/20.500.12866/11236
@misc{renati/910151,
title = "Evaluación del tiempo de vigencia del agar P para pseudomona (PSP) y del agar F para pseudomona (PSF) almacenados en frascos",
author = "Sánchez Muñoz, Diego Eduardo",
publisher = "Universidad Peruana Cayetano Heredia",
year = "2022"
}
In the pharmaceutical industry, according to Good Laboratory Practices (GLP), it is mandatory to ensure the quality of prepared culture media, which are used for the microbiological quality control of drugs. Although the commercial bottles of dehydrated media come with their quality certificate, several factors intervene in their preparation that could make the culture media lose their properties, such as autoclaving and storage conditions, which is why the GLP and official works called pharmacopoeias indicate that the validity of the prepared media must be determined, however, the pharmacopoeias describe how to evaluate the quality of the media but do not detail how to determine its validity. In the present work, the validity time of 2 differential solid media was evaluated, P agar for pseudomonas (PSP) and F agar for pseudomonas (PSF), in a period of 30 days; taking into account for the proposed procedure the quality parameters defined in the current United States Pharmacopeia, carrying out 3 repetitions based on what is described in the Good Manufacturing Practices (GMP) for validation processes. The results were that the PSF agar maintains its characteristics up to 30 days, while the PSF agar up to 15 days of observation. In the 3 repetitions for both media, the characteristics of appearance, pH, sterility and percentage of recovery between 50 to 200% were maintained. On the other hand, the indicator property of the PSP medium (Pyocyanin) was observed of very low intensity at 30 days, while the indicator property of the PSF medium (Fluorescein) was maintained until 30 days of observation, in the storage conditions evaluated. (media stored in bottles at 13-15 ° C).
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