Are yeasts able to grown food with low PH ?
For example , according to the European Union ( EU ) legislation , sorbic acid is limited to 0.03 % ( w / v ) in soft drinks ( pH 2.5 - 3.2 ) ; however " Z. bailii " can grow in soft drinks containing 0.05 % ( w / v ) of this acid ( pKa 4.8 ) .