PMID: 2485358Oct 1, 1989Paper

A microbial growth study in parenteral nutrition

Nutrición hospitalaria
T Vílchez MedinaM Atienza Fernández

Abstract

Study on the behaviour of five microorganisms in different formulations of parenteral nutrition (PN) different from each other with regard to the presence or absence of lipids and the addition of vitamins or oligoelements. The bacteria investigated were Staphylococcus aureus (ATCC 12600), Bacillus subtilis (ATCC 6051), Pseudomonas aeruginosa (ATCC 9027) and Enterobacter cloacae (ATCC 13047), as well as Candida albicans (LSH 3156 D). It was observed that C. albicans grew well in all types of PN tested, S. aureus and E. cloacae showed growth in the formulations containing lipids, whereas in those lacking lipids, the number of microorganisms remained practically uniform. P. aeruginosa remained essentially constant throughout the study and in all mixtures and B. subtilis was reduced with regard to the number of feasible organisms, due to the formation of spores. Finally, the addition of vitamins or oligoelements did not appear to determine a particular model of evolution in any of the species studied.

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