Production of sulfur-free nanoparticles by yeast

Details Production of sulfur-free nanoparticles by yeast Production of sulfur-free nanoparticles by yeast

C - Chemistry, Metallurgy

12

P

C12P 3/00 (2006.01) C01B 19/02 (2006.01) C12P 1/02 (2006.01)

Patent

CA 2733951

A method of producing sulfur-free nanoparticles involves growing yeast in a growth medium containing a source of an element in a bio-reducible oxidation state (e.g. Se (VI)), and, precipitating nanoparticles containing the element in a lower oxidation state (e.g. Se(0)) than the oxidation state of the element in the source. The method advantageously can provide substantially spherical nanoparticles at high production efficiencies.

L'invention concerne un procédé de production de nanoparticules exemptes de soufre, qui comprend les étapes consistant à: mettre en culture la levure dans un milieu de croissance contenant une source d'un élément dans un état d'oxydation bioréductible (p. ex. Se (Vl)), et précipiter les nanoparticules contenant l'élément dans un état d'oxydation inférieur (p. ex. Se(O)) à celui de l'élément dans la source. Ce procédé permet avantageusement de produire des nanoparticules sensiblement sphériques à des rendements de production élevés.

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