Seleno-lactobacillus. An organic selenium source.

M Calomme; J Hu; K Van den Branden; D A Vanden Berghe

doi:10.1007/bf02790140

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Seleno-lactobacillus. An organic selenium source.

M Calomme·J Hu·K Van den Branden·D A Vanden Berghe

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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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Autoradiography Bacterial Proteins Bacteriological Techniques Biomass Culture Media Electrophoresis, Polyacrylamide Gel Freeze Drying Lactobacillus Lacticaseibacillus casei Selenium Selenium Radioisotopes Species Specificity Comparative Study Journal Article

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M Calomme, J Hu, K Van den Branden, D A Vanden Berghe. Seleno-lactobacillus. An organic selenium source.. https://doi.org/10.1007/bf02790140

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