Fig. 3. Final higher alcohol concentrations in EBC tall-tube fermentations under different amino acid supply. Results are the averages of three independent fermentations. Error bars
indicate ± SD (A). Relative transcription profile by the lager strain TUM 34/70 of genes involved in higher alcohol production. Results are the averages of three independent fermentations
relative to the condition without supplementation of amino acids (*p < 0.05). Error bars indicate ± SD (B). (Grey bars) standard fermentation; (Black bars) proline
addition; (white bars) cysteine addition; (light grey bars) valine addition; (double striped bars) leucine addition; (dark grey bars) isoleucine addition; (striped bars) glutamine
addition.