Abstract: This invention relates to a method of monitoring a fermentation process. In particular, the invention relates to a method of monitoring a fermentation process comprising the step of measuring the expression level of one or more zinc regulated nucleic acid molecules from a microorganism, preferably selected from the group consisting of Escherichia Bacillus, Cyanobacter, Streptomyces, Corynebacteria, Zymomonas, Saccharomyces, Zygosaccharomyces, and Schizosaccharomyces cells, present in the fermentation and comparing the expression level to a reference level of expression for the nucleic acid molecules, wherein the expression level is indicative of sub-optimal fermentation. Preferably the fermentation process is a beer brewing process.

Abstract: This invention relates to a method of monitoring a fermentation process. In particular, the invention relates to a method of monitoring a fermentation process comprising the step of measuring the expression level of one or more zinc regulated nucleic acid molecules from a microorganism, preferably selected from the group consisting of Escheridia, Bacillus, Cyanobacter, Streptomyces, Corynebacteria, Zymomonas, Saccharomyces, Zygosaccharomyces, and Schizosaccharomyces cells, present in the fermentation and comparing said expression level to a reference level of expression for said nucleic acid molecules, wherein said expression level is indicative of sub-optimal fermentation. Preferably the fermentation process in a beer brewing process.