Abstract: The use of a material in the production of a beverage, wherein the material particles are added in the course of the production process to a starting material or an intermediate product of the beverage and are then separated off again prior to finishing of the beverage, wherein the particles of the material are characterized in that they at least partially comprise a silicate, wherein the silicate particles with respect to the total weight of the particles have a proportion of at least one metal ion in the range of between 1.5 and 30% by weight, wherein the at least one metal ion is selected from a metal ion of the elements La, Ce, Cu, Ag, Zn, Sn, Ca, Mg, Fe and Mn.

Abstract: A method of producing yeast mutants and the use thereof. In order to provide yeasts which, at a given sugar content, produce a low ethanol content and a relatively high glycerol content in ethanolic fermentation and which are simultaneously obtainable rapidly, at least one yeast strain is contacted in a first mutagenesis step with a first mutagen and in a second mutagenesis step with a second mutagen. The first and second mutagens are different from one another and are selected from the following groups: nucleotide-alkylating agent, nucleotide-deaminating agent, and UV radiation. The method further includes a first selection step executed between the first and second mutagenesis steps and a second selection step being executed after the second mutagenesis step, in which the mutants that originate from the prior mutagenesis step in each case are exposed to a selection factor selected from the following groups: (a) hypertonic medium and (b) alcohol dehydrogenase inhibitor.