JOURNAL ARTICLE

[Types of microbial contaminants in pharmaceutical raw materials]

A Martínez-Bermúdez, J Rodríguez-de Lecea, T Soto-Esteras, C Vázquez-Estévez, C Chena-Cañete
Revista Latinoamericana de Microbiología 1991, 33 (2): 153-7
1670480
In order to analyze the significance of the microbial content of pharmaceutical raw materials contributed to the finished pharmaceutical products, we have carried out a study of contamination taking into account aerobic bacteria, anaerobic bacteria and fungi. None or only low numbers of pathogenic microorganisms was found in most analyzed products but in some materials, specially those of natural origin, we have detected high bacterial and fungal contamination. Microorganisms of the genus Bacillus have been the aerobic bacteria most frequently isolated; Bifidobacterium and Clostridium were the most common anaerobic bacteria and with respect to the fungi, Penicillium and Aspergillus have been found with the highest frequency. These microorganisms can produce problems in pharmaceutical finished products, due to their enzymatic or toxigenic activities.

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