Seleno-lactobacillus. An organic selenium source - PubMed (original) (raw)

Comparative Study

. 1995 Jan-Mar;47(1-3):379-83.

doi: 10.1007/BF02790140.

Affiliations

• PMID: 7779573
• DOI: 10.1007/BF02790140

Comparative Study

Seleno-lactobacillus. An organic selenium source

M Calomme et al. Biol Trace Elem Res. 1995 Jan-Mar.

Abstract

Lactic acid bacteria are nonpathogenic bacteria commonly used in food processing. An evaluation was made of the capacity to concentrate selenium in species of Lactobacillus. A selenium concentration of 1 microgram/mL in the culture medium yielded in a bacterial content of 400 micrograms/g dry biomass. Dialysis and TCA precipitation experiments of a native intracellular extract proved that at least 80% of the total selenium is associated with organic molecules. Seleno-cysteine was identified as the only seleno-amino acid present in the intracellular selenoproteins. This study shows that species of the lactic acid bacteria are able to concentrate selenium intracellular as seleno-cysteine, which could be applied in supplementation studies.

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