High-yield ethanol production from Jerusalem artichoke tubers.

Fermentation conditions were optimized for the production of ethanol from Jerusalem artichoke with a strain of Saccharomyces cerevisiae able to use high-concentration juice and undiluted pulp. Yields (95 to 125 g ethanol/l=85 to 98% of the theoretical value) exceeded those obtained with strain of Kluyveromyces used classically.