Fig. 1. Fermentation profile of EBC tall-tube fermentations with different amino acid
additions. Course of sugar content expressed as Plato (A), alcohol formation (B) and
cell number development (C) throughout the fermentations. Results are the averages
of three independent fermentations. Error bars indicate ± SD. ( ) standard amino acid
concentration; (C) proline addition; (▵) cysteine addition; ( ) valine addition; (◄)
leucine addition; ( ) isoleucine addition; (◊) glutamine addition.